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https://hdl.handle.net/20.500.14094/0100476950
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2024-05-06
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0100476950 (fulltext)
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4.45 MB
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メタデータID
0100476950
アクセス権
open access
出版タイプ
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タイトル
Novel insights into host specificity of Pyricularia oryzae and Pyricularia grisea in the infection of gramineous plant roots
著者
Xiang, Zikai ; Okada, Daiki ; Asuke, Soichiro ; Nakayashiki, Hitoshi ; Ikeda, Kenichi
著者名
Xiang, Zikai
著者名
Okada, Daiki
著者ID
A2669
ORCID
0000-0001-5725-9062
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=159557c7df0741fd520e17560c007669
著者名
Asuke, Soichiro
足助, 聡一郎
アスケ, ソウイチロウ
所属機関名
農学研究科
著者ID
A1194
研究者ID
1000050252804
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=c81f1ca0606888bf520e17560c007669
著者名
Nakayashiki, Hitoshi
中屋敷, 均
ナカヤシキ, ヒトシ
所属機関名
農学研究科
著者ID
A1286
研究者ID
1000040437504
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=854d2f7a8e909830520e17560c007669
著者名
Ikeda, Kenichi
池田, 健一
イケダ, ケンイチ
所属機関名
農学研究科
収録物名
Molecular Plant Pathology
巻(号)
23(11)
ページ
1658-1670
出版者
John Wiley & Sons
刊行日
2022-11-01
公開日
2022-10-17
抄録
Pyricularia oryzae and Pyricularia grisea are pathogens that cause blast disease in various monocots. It has been reported that P. oryzae infects the leaves and roots of rice via different mechanisms. However, it is unclear to what extent the tissue types affect the host specificities of P. oryzae and P. grisea. Here, we evaluated the tissue-specific infection strategies of P. oryzae and P. grisea in various gramineous plants. Generally, mycelial plug inoculation caused root browning but the degree of browning did not simply follow the disease index on leaves. Interestingly, the Triticum and Digitaria pathotypes caused strong root growth inhibition in rice, wheat, and barley. Moreover, the Digitaria pathotype inhibited root branching only in rice. Culture filtrate reproduced these inhibitory effects on root, suggesting that some secreted molecules are responsible for the inhibitions. Observation of root sections revealed that most of the infection hyphae penetrated intercellular spaces and further extended into root cells, regardless of pathotype and host plant. The infection hyphae of Digitaria and Triticum pathotypes tended to localize in the outer layer of rice roots, but not in those of wheat and barley roots. The infection hyphae of the Oryza pathotype were distributed in both the intercellular and intracellular spaces of rice root cells. Pathogenesis-related genes and reactive oxygen species accumulation were induced after root inoculation with all combinations. These results suggest that resistance reactions were induced in the roots of gramineous plants against the infection with Pyricularia isolates but failed to prevent fungal invasion.
キーワード
defence response
pathogenesis-related (PR) genes
pathogenicity
pathotype
tissue specificity
カテゴリ
農学研究科
学術雑誌論文
権利
© 2022 The Authors. Molecular Plant Pathology published by British Society for Plant Pathology and John Wiley & Sons Ltd.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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資源タイプ
journal article
言語
English (英語)
ISSN
1464-6722
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eISSN
1364-3703
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関連情報
DOI
https://doi.org/10.1111/mpp.13259
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