迈耶-羊茅类麦角菌，新种，与细羊茅草坪草的夏季斑病状病害有关。
Magnaporthiopsis meyeri-festucae, sp. nov., associated with a summer patch-like disease of fine fescue turfgrasses.
作者信息
Luo Jing, Vines Phillip L, Grimshaw Austin, Hoffman Lindsey, Walsh Emily, Bonos Stacy A, Clarke Bruce B, Murphy James A, Meyer William A, Zhang Ning
机构信息
a Department of Plant Biology , 201 Foran Hall, 59 Dudley Road, Rutgers University, New Brunswick , New Jersey 08901.
b Department of Biochemistry and Microbiology , 76 Lipman Drive, Rutgers University, New Brunswick , New Jersey 08901.
出版信息
Mycologia. 2017;109(5):780-789. doi: 10.1080/00275514.2017.1400306. Epub 2018 Jan 2.
Summer patch is a common and destructive root disease of turfgrasses. In this study, a new Magnaporthiopsis species, M. meyeri-festucae, was identified from the roots of fine fescue (Festuca spp.) turfgrasses with summer patch-like symptoms. It is described and illustrated on the basis of phenotypic characteristics and partial sequences of rDNA 18S, internal transcribed spacer (ITS), and 28S regions, and of MCM7, RPB1, and TEF1 genes. A key for all seven described species in the genus Magnaporthiopsis is provided. Distinctions between the new species and related species are discussed. Fulfillment of Koch's postulates confirmed Magnaporthiopsis meyeri-festucae as a pathogen causing summer patch-like symptoms of fine fescue turfgrasses. This work is the basis for future studies on biogeography, host range, and impact of summer patch pathogens on a broader scale.
夏季斑病是草坪草常见且具破坏性的根部病害。在本研究中，从具有夏季斑病样症状的细羊茅（羊茅属）草坪草根部鉴定出一种新的拟稻瘟病菌种，即迈耶氏羊茅拟稻瘟病菌。基于表型特征、rDNA 18S、内转录间隔区（ITS）和28S区域以及MCM7、RPB1和TEF1基因的部分序列对其进行了描述和绘图。提供了拟稻瘟病菌属中所有七个已描述物种的检索表。讨论了新物种与相关物种之间的区别。柯赫氏法则的验证证实了迈耶氏羊茅拟稻瘟病菌是导致细羊茅草坪草出现夏季斑病样症状的病原体。这项工作是未来在更广泛范围内对夏季斑病病原体的生物地理学、寄主范围和影响进行研究的基础。
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