中文摘要：玉米茎腐病（MSR）是一种主要由镰刀菌属引起的严重的复杂病害。为了评估镰刀菌属对玉米植株的致病性，本研究对我国东北部玉米种植区进行了实地调查，收集感染了MSR的茎组织。研究发现，串珠镰刀菌在我国东北MSR的复杂过程中起到了关键作用。
外文摘要：Maize Stalk Rot (MSR) is a serious complex disease and principally caused by Fusarium species. In order to assess pathogenicity of the Fusarium species on maize plants, a field survey was made in maize cultivation zones in North-East China to collect the infected stem tissues from MSR. The Transmission Electron Microscopic (TEM) observation revealed thin cell wall, increased number of endoplasmic reticulum (ER), appearance of plastoglobule (PG) and presence of fungal hyphae in the MSR infected stem tissues. Further, a total of nine Fusarium strains were isolated in stems of MSR including five from Liaoning Province and four from Jilin Province. It was demonstrated that the combination of dominant strains such as Fusarium verticillioides and Fusarium graminearum displayed higher virulence than the individuals on the detached stems of seedlings. In vivo experiment showed that the MSR was obvious in maize genotype of Huangzao 4 when inoculated with the two Fusarium strains by the toothpick method. Then, the dynamic infection process observed by using eGFP-Tag strain and paraffin section revealed that F. verticillioides hyphae extended out from the cutting site to the neighboring plant cells inside the host. Thus F. verticillioides was proved to play a vital role in contribution of the MSR complex process in North-East of China.
外文关键词：Maize stalk rot；F. verticillioides；F. graminearum；North-East China；Transmission electron microscopy；Virulence
作者：Yu, Chuanjin；Saravanakumar, Kandasamy；Xia, Hai；等
作者单位：Shanghai Jiao Tong University
期刊名称：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
期刊影响因子：1.371
出版年份：2017
出版刊次：-
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