イネいもち病菌の宿主選択的感染機構に関する研究(1) : 病害決定因子検索の検定植物としてのイネ品種関口朝日の有用性

島根大学農学部研究報告 Volume 22 Page 176-183 published_at 1988-12-21
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Title
イネいもち病菌の宿主選択的感染機構に関する研究(1) : 病害決定因子検索の検定植物としてのイネ品種関口朝日の有用性
Title
Studies on Host-Selective Infection Mechanism of Pyricularia oryzae Cavara(1) : Usefulness of Rice cv. Sekiguchi-asahi as a Test Plant for Detection of Disease Determinant(s)
Title Transcription
イネ イモチビョウキン ノ シュクシュ センタクテキ カンセン キコウ ニ カンスル ケンキュウ 1 ビョウガイ ケッテイ インシ ケンサク ノ ケンテイ ショクブツ トシテノ イネ ヒンシュ セキグチ アサヒ ノ ユウヨウセイ
Creator
Kano Mikio
Kondo Kazumi
Nozu Mikio
Tanaka Emiko
Nishimura Syoyo
Source Title
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
Volume 22
Start Page 176
End Page 183
Journal Identifire
ISSN 0370940X
Descriptions
When rice cvs. Sekiguchi-asahi and Shin 2 were inoculated with P. oryzae, orange to orange brown lesions ("Sekiguchi" lesion) were formed only on cv. Sekiguchi-asahi. On cv. Shin 2, typical necrotic blast lesion was only formed. Size of the "Sekiguchi" lesions was larger than that of commonly visible blast lesions. The "Sekiguchi" lesions rapidly enlarged, gradually merged and finally occupied the entire plant. Significant difference in lesion formation was also observed among isolates of P. oryzae used. Typical "Sekiguchi" and blast lesions were formed on the leaves by inoculation of isolates Hoku 1, Ken 54-04, 0528-2 and Naga 69-150 of P. oryzae. In cases of isolates Ina 168 and SH 85-125, only "Sekiguchi" lesions were induced. Such difference in lesion formation was already recognized at cytological observation of fungal behaviors in detached rice sheath cells. Hyphal growth of P. oryzae isolates that produced two typical lesions on cv. Sekiguchi-asahi was very good into the rice sheath cells. However, that of isolates Ina 168 and SH 85-125 that produced only "Sekiguchi" lesions was very poor. When spores of isolate SH 85-125 ("Sekiguchi" lesion inducer) were mixed with those of isolate Hoku 1("Sekiguchi" and blast lesions inducer), and the spore mixed-pastes of two isolates were punch-inoculated onto the leaves of cv. Sekiguchi-asahi, there was difference in the numbers of typical "Sekiguchi" lesions between mixed- and single-inoculation of isolates Hoku 1 and SH 85-125.
Language
eng
Resource Type departmental bulletin paper
Publisher
島根大学農学部
Shimane University, Faculty of Agriculture
Date of Issued 1988-12-21
Access Rights open access
Relation
[NCID] AN00108015