Identification of rice seed infection routes of Fusarium fujikuroi inciting bakanae disease of rice
Identification of rice seed infection routes of Fusarium fujikuroi inciting bakanae disease of rice
复制标题
引起水稻恶苗病的藤黑镰孢菌种子侵染途径的鉴定
DOI：
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发表时间：
2019
影响因子：
2.2
通讯作者：
R. Aggarwal
中科院分区：
文献类型：
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作者：
S. Sunani;B. Bashyal;B. Kharayat;G. Prakash;S. G. Krishnan;R. Aggarwal
由赤霉病菌引起的水稻恶苗病在印度是一种严重的水稻病害。对侵染过程中植物组织的组织学研究可为了解病原菌的致病机理和抗病机制提供有价值的信息。对F.利用光学显微镜和扫描电子显微镜（SEM）对水稻中的藤仓病进行了微观观察。在种子中，病原菌在壳、胚和胚乳中观察到，其中壳区域的定殖最大。结果表明，该菌具有不同的侵染结构，如顶端膨大菌丝、侵染菌丝、附着胞和侵染垫等。藤黑稻-水稻互作接种物（种子-种子、幼苗-种子和小花-种子）的传播百分比（%）估计显示，F.藤仓通过小花继之以幼苗和种子。本研究证实了稻瘟病菌对水稻的侵染作用。藤枯病可以通过三种途径发生，即种子、幼苗（土壤）和小花（空气）。本研究所获得的信息将有助于了解水稻恶苗病的发病机理，并有助于设计有效的防治策略。
Bakanae disease caused by Gibberella fujikuroi, Sawada, Wollenworth (teleomorph) (anamorph: Fusarium fujikuroi Nirenberg), is emerging as a serious disease of rice in India. Histopathological study of plant tissue during infection can provide valuable insight for understanding the pathogenesis and the mechanism of resistance. The early infection process of F. fujikuroi in rice was observed at microscopic level using light microscopes and scanning electron microscope (SEM). In seed, the pathogen was observed in the husk, embryo and endosperm with maximum colonization in the husk region. Different infectious structures such as swollen tip hyphae, infectious hyphae, appressorium and infection cushion were observed in F. fujikuroi-rice interactions. The estimates of per cent (%) transmission of inoculum (seed-seed; seedlings-seed and florets-seed) revealed maximum transmission of F. fujikuroi through florets followed by seedlings and seed. The present study established that the infection of rice plants by F. fujikuroi can occur through three routes namely seed, seedlings (soil) and florets (air). The information generated in the present study will be valuable for providing an understanding on the pathogenesis and help to device effective strategies for management of bakanae disease of rice.
影响因子：
6.7
作者：
Wiemann P;Sieber CM;von Bargen KW;Studt L;Niehaus EM;Espino JJ;Huß K;Michielse CB;Albermann S;Wagner D;Bergner SV;Connolly LR;Fischer A;Reuter G;Kleigrewe K;Bald T;Wingfield BD;Ophir R;Freeman S;Hippler M;Smith KM;Brown DW;Proctor RH;Münsterkötter M;Freitag M;Humpf HU;Güldener U;Tudzynski B
通讯作者：
Tudzynski B