| 一种新发生的油桐叶枯病病原真菌 |
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| 引用本文： | 袁志林,陈益存,汪阳东.一种新发生的油桐叶枯病病原真菌[J].菌物学报,2011,30(4):658-662. |
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| 作者姓名： | 袁志林 陈益存 汪阳东 |
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| 作者单位： | 中国林业科学研究院亚热带林业研究所,富阳,311400 |
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| 基金项目： | 林业公益性行业科研专项“油桐抗病高产良种选育技术研究”（No. 200904042） |
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| 摘 要： | 报道了中国广西田林县油桐主产区一种新的叶片真菌病害,定名为油桐叶枯病.该病主要为害叶片,病菌侵染后叶片呈现灰褐色病斑,后期扩至整个叶片,引起过早脱落,影响油桐产量.从采集的带病标本中分离到16个纯培养物,隶属5个分类单元.依据柯赫法则和致病性测定,证明只有菌株VT-04为油桐叶枯病的病原物.在病斑组织中观察不到有性或无...
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| 关 键 词： | 小新壳梭孢 葡萄座腔菌科 致病性 |
A new leaf blight pathogen of Vernicia fordii |
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| Authors: | YUAN Zhi-Lin CHEN Yi-Cun and WANG Yang-Dong |
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| Institution: | Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China;Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China;Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, China |
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| Abstract: | A new leaf blight pathogen of Vernicia fordii was recorded in Guangxi,China.The diseased leaves show dark brown spots which then spread over the whole leaves.The premature defoliation may significantly reduce the production of tung seeds.Sixteen pure fungal cultures belonging to five taxa were obtained from diseased leaf tissues.Strain VT-04 was identified as the pathogen based on Koch’s postulates and pathogenicity test.Fruiting structures had not been observed on clinic specimens,but induction of sporulation was successfully achieved when the pathogen was cultured on water agar medium containing sterile pine needles under UV light.An integrated analysis of cultural characteristics and phylogeny of two molecular markers including the ribosomal DNA internal transcribed spacer (ITS) and RNA polymerase II second largest subunit (RPB2) revealed that the pathogen was conspecific with Neofusicoccum parvum.This is the first report that N.parvum can cause leaf disease of V.fordii. |
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| Keywords: | Neofusicoccum parvum Botryosphaeriaceae pathogenicity |
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