Armillaria root rot Armillaria spp. Hackberry. The colonies turned dark gray after 5 days (Fig. China Agricultural Press, Beijing, Zhang YH, Wei DS, Xing LJ, Li MC (2008) A modified method for isolating DNA from fungus. Click here, then click on your county either on the map or from the list of counties below it. This is the first report of L. pseudotheobromae causing canker on Chinese hackberry stems in China. There were no obvious conflicts in a single gene phylogeny and the ITS, tef1-α, TUB and rpb2 datasets can be amalgamated. The Diplodia mutila isolate CMW7060 was selected as an out-group (Table 2). It is also susceptible to galls, caused by insects called psyllids, that can disfigure the leaves. Some seedlings showed symptoms of wilting, leaf fall, twig dieback, and tissue discolouration. Jake at TREES BY JAKE is an ISA Certified Arborist and has extensive experience in identifying and diagnosing all types of tree disease, including root rot. Figure 279. Als die Route 66 an Bedeutung zunahm übernahm der General Store zusätzlich die Versorgung der Reisenden mit Benzin und Proviant. They are susceptible to a root fungus (Hypoxylon) that appears around the base of the tree as a black, crusty growth. Root Rot By: Janna Beckerman, jbeckerm@purdue.edu “We never look deeply into the quality of a tree; we never really touch it, feel its solidity, its rough bark, and hear the sound that is part of the tree. This tree is a U.S. native that is widely distributed throughout the east and midwest. In addition, it also can infect Acacia confusa Merr (Dou et al. Although sugar hackberry has been used as a street tree in many cities in the South, its use has been banned by other cities because of problems with trunk rot. After 20 days, eight seedlings inoculated Ls7 isolate showed disease symptoms similar to those that appeared in the field, including local, spindle-shaped necrosis and slightly concave red-brown spots (approximately 25 mm × 5 mm) (Fig. According to the ITS sequence, Ls1 –Ls7 types were identified as Fusarium tricinctum (2%), Diaporthe spp. This study may provide reference value for the prevention of Chinese hackberry canker. If you have problems with hackberry leaf drop, give us a call. 2018). Plant Dis 99(1):155, Maricarmen S, Angel DN, Sandoval-Islas JS, Ortiz DT, Orozco-Santos M, Silva-Rojas HV (2013) Hongos asociados a pudrición del pedúnculo y muerte descendente del mango (Mangifera indica L.). The outbreak period was concentrated in July and August, suggesting that the disease spread during summer months. The occurrence of the disease should be closely monitored and preventative measures put in place to avoid the spread of the disease. 40 to 60 feet tall. Depending on the extent of the rot, the tree may be structurally unsound and at risk of falling. I want to start with some reminders about Linux systemsIf you start on Linux with your fresh new Raspberry Pi, this could help you understand better Ganoderma root and butt rot Ganoderma spp. Microbiology 3:466–469, Zhao JP, Lu Q, Liang J, Decock C, Zhang XY (2010) Lasiodiplodia pseudotheobromae, a new record of pathogenic fungus from some subtropical and tropical trees in southern China. Possible fungal causal agents were isolated from naturally infected canker tissue and discoloured xylem. Seedlings inoculated with sterile PDA showed no symptoms of canker (Fig. 2014). i A condium with partial germ tube (Bars = 10 µm), Fungus isolate Ls7 a unique dark pink colony under incubation at 35 °C. In: Proceedings of annual conference of the Chinese Society of Mycology, 2015, Li GQ, Liu FF, Li JQ, Liu QL, Chen SF (2016) Characterization of Botryosphaeria dothidea and Lasiodiplodia pseudotheobromae from English walnut in China. To root your BlackBerry KEY2 with Kingo Root, it is incredibly basic. Each group was cultured for 7 days at 25 °C in darkness. Gray, unique stucco-like bark. There is no evidence that Texas root rot … e Xylem discoloration (Bars = 500 µm). Persoonia 33:155–168, Tamura K, Peterson D, Peterson N, Stecher G, Nei M, Kumar S (2011) Mega5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. WARNING: Some websites to which these materials provide links for the convenience of users are not managed by the University of Kentucky. Host trees normally decline for a variable period of time and then die. Copyright 2020, University of Kentucky, College of Agriculture, Food and Environment. Fungal conks, a semicircle shelf fungi, can be found from the base of the tree up to 3 feet high on the trunk; Conks are reddish brown and shiny on top, white and porous underneath; a rim of white may be visible on the edge of growing conks; Infected wood at the tree base is white, soft, stringy or spongy 2004). 3b), at which stage aerial hyphae were thick and fluffy. Site design : Academic Web Pages. 31, 2571–2580 (2020). Hackberry > Leaves > Leaves wilt and turn yellow or brown. The fungal samples categorized as Ls7 type in this study showed similar features with L. pseudotheobromae and was consistent with these characteristics. Mycosphere 7(7):990–1000, Trakunyingcharoen T, Lombard L, Groenewald JZ, Cheewangkoon R, To-anun C, Crous PW (2015) Caulicolous Botryosphaeriales from Thailand. Rooting Habit- Hackberry is a deep rooting species, ultimately reaching depths between 3 and 6 m (10 and 20 ft) on most sites (8). China Fruits 5:71–74, Yee JK, Latiffah Z, Masratul HM (2019) Lasiodiplodia species associated with Sansevieria trifasciata leaf blight in Malaysia. The bark is grayish and warty, and stems have a zigzag appearance. There were many short conidiophores on the inner walls and conidia on the conidiophores. Colonies of the Ls7 isolate grew rapidly, and after 3 days of culturing at 25 °C, were grayish-white with uneven edges (Fig. The largest tree in North Dakota is 70 feet tall with a canopy spread of 62 feet. Texas root rot, also known as cotton root rot, is common in heavy, alkaline soils of the southwest. Soft Rot – This can be caused by a fungal or bacterial infection. 2001). 4c). 1a), and the top young leaves on twigs were wrinkled and brittle due to dehydration (Fig. 2c). 2008); Bt2a and Bt2b (TUB) (Glass and Donaldson 1995); and, RPB2-LasF and RPB2-LasR (RPB2) (Cruywagen et al. (Alves et al. 2017), papaya stem-end rot (Netto et al. 2015; Coutinho et al. Liang, L., Li, H., Zhou, L. et al. Hackberry's bizarre bark alone makes it worth growing, but there is so much more to these resilient native trees. Annuals usually escape disease since they are in the ground such a short time. For general undergraduate student information, contact Dr. Rick Durham at (859) 257-3249, or rdurham@uky.edu. The diseased portions of the stems were dark brown due to discoloured xylem. 2016), pedicel and peduncle discoloration of grapes (Dissanayake et al. Australas Plant Dis Notes 10(1):21, Dou ZP, He W, Zhang Y (2017) Lasiodiplodia chinensis, a new holomorphic species from China. The Asian native pest is also referred to as the Asian woolly hackberry aphid and it primarily infests the Chinese hackberry. The PCR reaction procedure had the following steps: (1) initial denaturation at 95 °C for 5 min; (2) denaturation at 95 °C for 30 s, (3) annealing at 55 °C for 30 s and extending at 72 °C for 33 cycles; and (4) extending at 72 °C for 10 min. Plant Pathol 66(1):90–104, Cruywagen CW, Brisson GJ, Tremblay GF, Meissner HH (2016) Effect of curd suppression in a milk replacer on physiological parameters in calves. The branches tend to droop, giving They are very tolerant of strong winds, heat, and dry alkaline soils. Among these, more than 50% were classified as Ls7 type and found to be similar to Lasiodiplodia pseudotheobromae. It is a good choice for a natural landscape or habitat garden but also does well in areas with heavy foot traffic. These trees can grow up to the height of 60 feet and have a spread of around the same. Genomic DNA was extracted from mature mycelia according to Zhang et al. Samples were cultured at 25 °C in a dark incubator. The pycnidia were nearly spherical, approximately 220–240 µm diameter, and formed scattered, unilocular, dark-brown to black areas on the stem and host epidermis (Fig. N-318 Ag Sciences Center University of Kentucky Lexington, KY 40546-0091, Fax (Lexington): 859-257-2859       (Princeton): 270-365-2667, For questions about home gardening, landscaping or commercial horticulture production, please contact your county extension agent. and grapevine etc. I would expect to see these diseases on stressed trees, so look for root or trunk injury, evidence of a grade change or construction nearby, or some change since symptoms appeared. For. J Gen Plant Pathol 85:66–71, Zhang L (2012) Global forest pest health profile: a case study under the global forest resources assessment 2005. Although sugar hackberry has been used as a street tree in many cities in the South, its use has been banned by other cities because of problems with trunk rot. Bootstrap support values from 1000 bootstrap replications are showed. Wildlife, particularly birds and squirrels, enjoy and seek out hackberry's nutritious fruits. Outgroup: Diplodia mutila. Agrociencia 47(1):61–73, Marques MW, Lima NB, Morais Júnior MAD, Barbosa MAG, Souza BO, Michereff SJ, Phillips AJL, Câmara MPS (2013) Species of Lasiodiplodia associated with mango in Brazil. I digestibility of nutrients and body mass-gain. 6). Persoonia 40:63–95, Luongo L, Haegi A, Galli M, Berti S, Vitale S, Belisario A (2015) First report of Phytophthora megasperma causing decline and death on Celtis australis in Italy. Persoonia 25(1):1–10, CAS  2019). Conidiogenous cells were hyaline, cylindrical and holoblastic (Fig. d, e Conidiophore (red star). Plant Dis 96(12):1826, CAS  Ganoderma Spp: Sign of Root Rot & Trunk Rot. The twigs and stems of all infected seedlings became cankerous and turned black, which was devastating to Chinese hackberry plantations. Ph.D. dissertation, Chinese Academy of Forestry, pp 1–101, Correia K, Silva MA, De Morais MA, Armengol J, Phillips AJL, Camara MPS, Michereff SJ (2016) Phylogeny, distribution and pathogenicity of Lasiodiplodia species associated with dieback of table grape in the main Brazilian exporting region. 2a) and resembled the Ls1–Ls6 isolates. Common diseases of Chinese hackberry are powdery mildew, stem and root rot, twig blight and leaf spot. However, by mid-July 2017, the incidence of Chinese hackberry canker was high with symptoms of the disease in over 21% of the 6000 m2 of plantations of the species. Fungal Divers 41:53–69, Phillips AJL, Alves A, Pennycook SR, Johnston PR, Ramaley A, Akulov A, Crous PW (2008) Resolving the phylogenetic and taxonomic status of dark-spored teleomorph genera in the Botryosphaeriaceae. Part of Springer Nature. Symptoms/signs: Infected trees often break or fall before death, however, a fruiting body or conk can be found at the base of most infected trees. Mycologia 96(3):598–613, PubMed  Lasiodiplodia species causing disease of Chinese hackberry have not been found in China. Sequences downloaded from NCBI (National Center for Biotechnology Information) were then used to carry out cluster analysis (Dou et al. In the summer of 2016, a small amount of Chinese hackberry canker disease occurred but did not attract attention in Suqian City. Based on morphological features and phylogenetic information, the pathogen was identified as Lasiodiplodia pseudotheobromae. In addition, the Ls7 isolate grew at 10 °C and produced dark pink colonies at 35 °C (Fig. Plant Dis 103(6):1429–1429, Li X, Li WY (2015) Biodiversity of Lasiodiplodia species in China. Fungal Divers 28(2):1–13, Begoude BAD, Slippers B, Wingfield MJ, Roux J (2010) Botryosphaeriaceae associated with Terminalia catappa in Cameroon, South Africa and Madagascar. Root and butt rot is one of the most common forms of tree disease affecting hardwoods. Chin J Trop Crops 39(5):940–947, Xu CN, Chi FM, Ji ZR, Dong QL, Zhang HJ, Cao KQ, Zhou ZS (2014) Research progress of Botryosphaeriaceae with dieback of blueberry. It is also used as industrial materials and various furniture. The polymerase chain reaction amplification system (PCR; 50 µL) contains 25 µL Etaq pre-Mix, 4 µL DNA template (approximately 200 ng), 2 µL forward primer, 2 µL reverse primer, and 17 µL ddH2O. Colony and spore morphologies were recorded every 24 h using a Nikon DS-Ri1 camera, Stereo Discovery, V20, Zeiss. Abdollahzadeh J, Javadi A, Mohammadi Goltapeh E, Zare R, Phillips AJL (2010) Phylogeny and morphology of four new species of Lasiodiplodia from Iran. Its rhizome fibers are strong and used in paper making, making ropes, artificial cotton and artificial fiber. Invertebrates. On clay prairie soil in North Dakota, however, the roots reached only to a depth of 1.4 m (4.5 ft); lateral extension was 12.6 m (41.5 ft). Potential problems with sugar hackberry include trunk rot and root rot. c, d Conidiogenous cell. Although they are closely related, the size and shape of L. pseudotheobromae conidia differ from those of L. theobromae which are larger and have orbicular ends (Alves et al 2008). The tough semicircular conk is usually found near ground level. Insects, Diseases, or Other Plant Problems: Witches’ broom (creating dwarfed, dense, contorted twig clusters at the branch ends) is somewhat common; while it does little harm to the tree, but can be quite unsightly. 2016), blueberry dieback (Wang et al. One hundred µL TE was added to completely dissolve the DNA; and, (4) 100 µL of RNase A (10 mg/mL) was attached to each tube and dried at 65 °C for 30 min. The fungus was recovered from the symptomatic inoculated tissues and the culture’s characteristics and morphology were similar to the Ls7 isolate. These trees can live 150 to 200 years. 2017). 5). An additional ten seedlings were inoculated with sterilized PDA agar blocks as controls. J Phytopathol 164(5):348–353, Li GQ, Liu FF, Li JQ, Liu QL, Chen SF (2018) Botryosphaeriaceae from eucalyptus plantations and adjacent plants in China. b 7-day-old dark gray colonies, fluffy aerial mycelium. 2010; Dissanayake et al. The sequence accession numbers in GenBank were registered as MH454038.1, MH746713, MK041547 and MK069598, respectively. Sixty fungal samples were divided into seven types numbered Ls1 to Ls7 type according to colony morphology. The entire infected 4-year-old seedlings were brought to the laboratory for isolation of the pathogen. After PCR amplification, the Ls7 isolate with primers ITS1/ITS4, EF1-1251r/EF1-688f, BT2a/BT2b and rpb2-LasR/rpb2-LasF, segment sizes of 544, 315, 462 and 532 bp were acquired, respectively. The effect is cosmetic only and does not warrant control. The pathogen overwinters in the soil, and in the summer of the following year, conidia and conidiomata are spread by wind and rain (Yee et al. The species has significant value in medicine and industry (Cao 2017). Based on available knowledge, this is the first report of Chinese hackberry stem canker disease caused by L. pseudotheobromae in China. 1d). c Pycnidia produced under an ultraviolet lamp. The procedure was: (1) mycelium grown for 3–4 days was placed in 2 mL test tubes with 500 µL of 2 × CTAB (containing 1% β-mercaptoethanol), rapidly cooled for 30 s in liquid nitrogen, and then heated immediately to 65 °C for 30 s. This was repeated three times; (2) a 1/2 volume of glass beads was added to each test tube before placing on a vortex shaker for 4–5 min, followed by heating to 65 °C for 20 min and shaking once every 10 min. 2008; Abdollahzadeh et al. Plant Dis 84(4):492, Cao WJ (2017) Based on the analysis of Chinese hackberry maintenance technology in winter. Mol Biol Evol 4:406–425, Sakalidis ML, Hardy GESJ, Burgess TI (2011) Endophytes as potential pathogens of the baobab species Adansonia gregorii: a focus on the Botryosphaeriaceae. [A condium accompany with partial germ tube (Fig. Common hackberry (C. occidentalis) tolerates most difficult sites and is native from Canada to Georgia including Kentucky. 2010; Perez et al. © 2020 Springer Nature Switzerland AG. Kingo SuperBattery is for rooted Android that Closes background apps and services to optimize your phone. Once you have gained the root access, you can choice the apps that only work for rooted phones which can enhance the battery of the BlackBerry Priv. This is the first report of hackberry canker in China and Chinese hackberry (C. sinensis) is a new host of L. pseudotheobromae. The maximum temperature tolerated by L. pseudotheobromae was 54 °C this resistance to high temperatures enables it to survive during the summer months. All inoculated seedlings were kept in a greenhouse at 25 °C under ambient conditions of 70–80% humidity, with 24 h light every day. In severe cases, they may even lead to plant death (Alves et al. Cryptogam Mycol 31(4):431–439, Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, 210037, Jiangsu, People’s Republic of China, Lu Liang, Huan Li, Lifeng Zhou & Fengmao Chen, You can also search for this author in In addition, L. pseudotheobromae can also grow at 10 °C and form deep-pink colonies at 35 °C but L. theobromae does not (Marques et al. One suspect is root rot. All monocots, such as palms, yuccas, agaves and grasses are immune and are good choices to plant anywhere that Texas root rot has been observed. It is also known as the nettletree, sugarberry, beaverwood, northern hackberry, and American hackberry. If left untreated it will cause rapid decline and death. 3a). The objectives of this study were to: (1) discover the epidemiology of canker occurring on Chinese hackberry; (2) prove the pathogenicity of the fungal pathogen using Koch’s Postulates Test; and (3) identify the causal agent using morphological and molecular techniques. The university does not review, control or take responsibility for the contents of those sites. It is a moderately long-lived hardwood with a light-colored wood, yellowish gray to light brown with yellow streaks.. Many fungi are capable of causing root rots and some cause considerable decay of the butts of trees as well. Root rots are more common on older trees or trees which have sustained root or basal injury. a Stem blotch and canker in the beginning. Worldwide, this species has a wide range. An Equal Opportunity University. Send mail to cgcass0@uky.edu with questions about this site. It typically lives to be 150 to 200 years old and exhibits its greatest annual growth between 20 and 40 years of age. Hackberry is a tree with an elm-like form and is, in fact, related to the elm.The wood of hackberry has never been used for lumber, primarily because of the tree's softness and an almost immediate propensity to rot when in contact with the elements. 1b). The initial sites of infection appeared as watery reddish brown spots (Fig. This fungus invades through tree wounds causing extensive decay of roots and trunk. Hackberries are currently suffering from two major afflictions. The tender leaf, roots and bark of hackberry can reduce swelling, relieve pain, clearing away heat and toxic materials. Appl Environ Microbiol 61:1323–1330, Ismail AM, Cirvilleri G, Polizzi G, Crous PW, Groenewald JZ, Lombard L (2012) Lasiodiplodia species associated with dieback disease of mango (Mangifera indica) in Egypt. Mycosystema 35:657–665, White TJ, Bruns T, Lee S, Taylor J (1994) Amplification and direct sequencing of fungal ribosomal RNA Genes for phylogenetics. Conidia were oval, both ends round and blunt, wider in the middle, initially transparent and aseptate or not partitioned (Fig. Google Scholar, Alves A, Correia ACM, Luque J, Phillips AJL (2004) Botryosphaeria corticola, sp. 2010; Sakalidis et al. were clearly divided into several clades or groups with a common ancestor representing different species within Lasiodiplodia. The supernatant was poured out and 200 µL of 70% alcohol was added to wash the DNA pellet, which was then dried at room temperature. LUCIDUS ROOT AND BUTT ROT, caused by Ganoderma lucidus Importance. The ITS sequence of the test pathogen revealed 100% homology with L. pseudotheobromae in GenBank of BLAST search. PCR Protoc 38:315–322, Wu XQ, He YQ, Liu ZH (2001) Occurrence and progress on tree cankers caused by Botryosphaeria spp. Fungal Ecol 4:1–14, Slippers B, Roux J, Wingfield MJ, van der Walt FJJ, Jami F, Mehl JWM, Marais GJ (2014) Confronting the constraints of morphological taxonomy in the Botryosphaeriales. Der Hackberry General Store wurde 1934 errichtet als der nahegelegene Ort Hackberry jenseits des Schienenstrangs mehr und mehr wuchs. Phylogenetic tree based on combined rDNA-ITS, tef1-α, TUB and RPB2 gene sequences of Chinese hackberry Lasiodiplodia stem canker pathogen and related fungi. 1 of 5. 4d, e). d Liquid secretions may mark the open position of the conidia, Conidial morphological characteristics for L. pseudotheobromae isolate Ls7 seen under the light microscope. Common diseases of Chinese hackberry are powdery mildew, stem and root rot, twig blight and leaf spot. Brown Rot – This is the most serious version. 2004), resulting in considerable economic losses. Disease symptoms observed on Chinese hackberry in Shuyang, Jiangsu. Plant Pathol 60(4):739–751, CAS  Mol Biol Evol 28:2731–2739, Tennakoon DS, Phillips AJL, Phookamsak R, Ariyawansa HA, Bahkali AH, Hyde KD (2016) Sexual morph of Lasiodiplodia pseudotheobromae (Botryosphaeriaceae, Botryosphaeriales, Dothideomycetes) from China. In mid-June 2018, each of the seven types of fungi was inoculated to 4-year-old seedlings with 10 replicates. This tree has weak wood that breaks under the stresses of snow, ice and wind. Mycol Prog 9(1):101–123, Berbegal M, Pérez-Sierra A, Armengol J (2012) First report of Sirosporium celtidis causing a foliar disease of European hackberry in Spain. (Fig. The branches can tend to droop. 1c). All the isolate groups were tested for pathogenicity on the seedling stems. The sizes of conidia were 22.2–28.6 × 12.1–17.4 μm (95% confidence limits = 25.2 ± 2.6 × 14.4 ± 2.4) and the average conidia length–width ratio was approximately 1.7 (Table 1). A phylogenetic tree of the isolate was developed using the internal transcribed spacer, elongation factor-1α (tef1-α), β-tubulin gene (TUB) and RNA polymerase II subunit primer genes (RPB2). Several cultivars of common hackberry are available with either a single leader or more resistance to witches-broom These include ‘Chicagoland,' ‘Delta' and ‘Prairie Pride.'. PDF file. Celtis occidentalis, the common Hackberry is a large tree native to North America. The lesions were approximately 98 mm × 6 mm (Fig. However, the annealing temperature of TUB and RPB2 was 52 °C (Alves et al. Disease and pests: None, noticeably resistant to oak root rot fungus. It differs from sugar hackberry in that the leaves are toothed and not smooth. The common hackberry tree is known by several names including sugarberry, nettletree, beaverwood, American hackberry, and northern hackberry. For graduate student information, contact Dr. Doug Archbold at 859-257-3352, or darchbol@uky.edu, Sugar Hackberry - Celtis laevigataElm Family (Ulmaceae). 2011), which was validated using bootstrap analyses with 1000 repetitions (Saitou and Nei 1987). 4a). Eventually, the twigs wilted. Res. Chinese hackberry (Celtis sinensis Pers.) This tree has weak wood that breaks under the stresses of snow, ice and wind. a Colony on white background. Armillaria Root Rot: Also known as Oak root fungus, is a disease caused by the fungi of the genus Armillaria. 2b). In mid-July 2017, symptoms of stem canker were found in commercial nurseries located in Shuyang County, Suqian City, Jiangsu Province (118°36′48′′E; 34°15′25′′N). 2e). Pathogens commonly enter the plant through wounds left by pruning of twigs and this may be the main reason for the spread of the disease. Trees grow best in areas with full sun or partial shade and require moderate amounts of water. The tissues were cut into 4 × 4 mm pieces between symptomatic and healthy tissues and cultured on fresh potato dextrose agar (PDA) medium containing 100 μg mL−1 ampicillin (Dai et al. a Pycnidia. It is not particular where it grows, it prefers moist soil, but will grow on gravelly or rocky hillsides. Fengmao Chen. It causes stem-end rot or dieback in branches of mango (Kwon et al. is an important and widely planted ornamental tree species in China, Japan and Korea (Lee et al. Therefore, the Ls7 isolate was determined to be the pathogen, although the seedlings infected with Ls7 isolate did not die. d Mature conidiomata on the disease site in this disease. In the instance that all goes good, the Kingo Root app is going to root your BlackBerry KEY2. Results of the pathogenicity trial. Conidia exist all year-round but are rarely detected in winter (Xu et al. PubMed Google Scholar. 2c, d). PubMed  Persoonia 21:29–55, Phillips AJL, Alves A, Abdollahzadeh J, Slippers B, Wingfield MJ, Groenewald JZ, Crous PW (2013) The Botryosphaeriaceae: genera and species known from culture. 2013). 2016). - 172.104.142.154. Persoonia 34:87–99, Wang XY (2016) The identification of pathogens for 17 fungal diseases of 14 ornamental plants. Netleaf hackberry is an excellent choice for areas subjected to desert heat, drought, high winds, and dry alkaline soil. J. The symptoms of canker began to develop 20 days after inoculation with Ls7 isolate and by day 35, there were dark, enlarged longitudinal lesions. 2013; Netto et al. They are broad crowned and often have an erratic shape. 2007; Correia et al. 2010; Sakalidis et al. The trees produce a quality hardwood, are commonly scattered throughout the Northeast, the bark and berries are striking, and they make excellent shade and street specimens. In the summer of 2017 in Shuyang, Jiangsu Province, a severe outbreak of Chinese hackberry disease appeared. The samples were sterilized in 75% alcohol for 3 min, dried quickly under a flame and rinsed three times with aseptic water for 30 s. Aseptic filter paper was used to absorb the water on the surface. 2012; Maricarmen et al. b The leaves of the diseased plant showed dieback. Based on the phylogenetic relationship of β-tubulin, Cheng (2012) concluded that the sexual stage of L. pseudotheobromae may be Botryosphaeria rhodina. Pat. With the development of the disease, slightly concave canker spots extended and gradually turned black–brown (Fig. Fungal isolates were cultured in PDA medium for 5 days at 25 °C. d Lesions in the inner stem of a diseased plant. 2016). Strong taproots develop only occasionally. 2014; Trakunyingcharoen et al. b Colony on black background. The experiment was carried out during the summer of 2018. The PCR products were sequenced by GenScript Biotechnology in Nanjing, China. c Canker spots extended longitudinally in the later stages of the canker disease. In the genus Lasiodiplodia, L. pseudotheobromae is phylogenetically close to L. theobromae (Li et al. 2008; Zhao et al. a Control stem (not inoculated with L. pseudothebromae). 2011) in China. White Rot – This is still severe as it too causes tree decay, but the wood will feel moist and spongy instead. hackberry, jojoba, and cacti are very tolerant. Ganoderma applanatum conks are often found at the base of infected trees. The morphological characteristics of the Ls7 isolate fit those of L. pseudotheobromae (Alves et al. Hackberry foliage and fruit. At the same time, it has a wide range of hosts. nov. on Quercus species, with notes and description of Botryosphaeria stevensii and its anamorph, Diplodia mutila. 2014). Two seedlings inoculated with Ls7 isolate developed canker spots on days 23 and 27 after inoculation, respectively. Trunk diameter ranges from 1-3’ (less frequently to 4’). dissertation, University of Pretoria, Pretoria, pp 1–130, Perez CA, Wingfield MJ, Slippers B, Altier NA, Blanchette RA (2010) Endophytic and canker-associated Botryosphaeriaceae occurring on non-native Eucalyptus and native Myrtaceae trees in Uruguay. 2011; Slippers et al. The online version is available at http://www.springerlink.com. Correspondence to 2016), Albizia falcataria (L.), Paulownia spp., Mangifera sylvatica, Eucalyptus spp. Using phylogenetic analyses based on ITS and tef1-α sequence data, they authenticated the sexual-asexual connection in L. pseudotheobromae. L. pseudotheobromae is an aggressive species in Australia, Cameroon, Egypt, Brazil, Mexico, China and other countries (Begoude et al. Hackberry trees are susceptible to infestation from the hackberry woolly aphid. Mycosphere 8(4):521–532, Glass NL, Donaldson GC (1995) Development of primer sets designed for use with the PCR to amplify conserved genes from filamentous ascomycetes. 2008) and therefore confirmed as L. pseudotheobromae causing Chinese hackberry canker. Hackberry trees are often planted as street or lawn trees and can even be planted near buildings or sidewalks. Growth & leaves size, shape, appearance similar to American elm. 2013; Coutinho et al. Root rots thrive on poor soil conditions. In the instance that you face any kind of complications, install Kingo Root on your pc, connect your BlackBerry KEY2 and go along with the recommendations. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. This tree is also well suited to urban conditions and can be used in yards and patios as well as along street and boulevards. is an adaptable species widely growing in southern China. This study focused on a Chinese hackberry canker disease outbreak between July and August. The symptoms of canker on stems of seedlings were discovered mid-July 2017 in Shuyang, Jiangsu Province. Two ends of the cankers with spots in the middle were cut to form a small segment of 50 mm, and treated under aseptic conditions. It was the first evidence in molecular genetics of a sexual morph for this species. Lasiodiplodia pseudotheobromae is important in agriculture and forestry as it causes cankers, stem-end rot, dieback and fruit rot (Sakalidis et al.
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