サツマイモネコブセンチュウとの混合感染におけるFusarium spp.の寄生性の転換   :   Changes in the Parasitism of Fusarium spp. in Plants Exposed to Root-knot Nematode and Fusarium Complex 

作成者 平野, 和弥, 河村, 貞之助
作成者 (ヨミ) ヒラノ, カズヤ
作成者の別表記 HIRANO, Kazuya, KAWAMURA, Teinosuke
日本十進分類法 (NDC) 620
内容 1)サツマイモネコブセンチュウ(M. incognita)の感染植物におけるFusarium菌の寄生性の変動について検討した.2)供試した3菌種, F. oxysporum f. sp. cucumerinum, F. oxysporum f. sp. lycopersici, F. oxysporum f. sp. niveumは, 5種類の植物に対してM. incognitaと混合接種した場合, いずれもその寄生性が変化し, 各菌種に特定の寄主植物以外のものにも萎ちょう症状をおこさせた.3)Fusarium菌とM. incognitaとによる混合感染の症状は, 植物の種類によってその程度が異なり, とくにキウリとトマトで顕著であった.4)混合感染をおこした植物の根部に現われたnecrosisの症状は, gall組織だけでなく, そのほかの部位にわたって拡大する慢延型のものが多かった.5)混合感染によってnecrosisを呈する根の組織からは, いずれも接種源のFusarium菌が再分離された.6)混合感染したgall組織切片の観察によって, 本来その植物には寄生しないFusarium菌が, gall部分の巨大細胞, 導管組織, 線虫体周囲の組織内に高密度で増殖しているのが確認された.
Changes in the Parasitism of Fusarium spp. in Plants Exposed to Root-knot Nematode and Fusarium Complex. K. HIRANO and T. KAWAMURA, Facutly of Horticutlure, Chiba University, Matsudo, Japan, Tech, Bull. Fac. Hort. Chiba Univ., No19:, 29〜38 1971. The authors demonstrated the confusion of parasitism of three Fusarium form species in plants infected with root-knot nematode. The material plants are as follows; Cucumis sativus L., Cucumis melo var. mdkuwa MAKING, Cuburbita ficifolia BOUCHE, Lycopersicon esculentum MILL, and Citrullus vulgaris SCHRAD. Fusarium oxysporum f. sp. cucumerinum brought wilt development not only to cucumber but to other nonhost plants under the condition which inoculated itself and root-knot nematode. Also in F. oxysporum f. sp. lycopersici and F. oxysporum f. sp. niveum, the similar phenomena occurred in their host or nonhost plants inoculated with one of Fusarium form species and root-knot nematode. Wilt developments caused with each Fusarium form species and root-knot nematode infection varied from the different plants in their appearance, and they were observed remarkably in cucumber and tomato. Necroses of roots in infected plant were recognized extensively upon the galled and nongalled tissues. The fungi of each inoculums were able to recovered from infected root tissues in all inoculated plants. Histological observations of necrotic galled tissue in cucumber plant which inoculated with F. oxysporum f. sp. lycopersici and root-knot nematode, indicated that the fungal invasion occurred clearly into root tissue despite of the nonhost plant and the mycelium were colonized abundantly into giant cells, vascular bundle and surrounding tissue of the female body. As thus, the parasitism in Fusarium spp. was changed in some case in plants exposed to root-knot nematode and Fusarium complex.

公開者 千葉大学園芸学部
コンテンツの種類 紀要論文 Departmental Bulletin Paper
DCMI資源タイプ text
ファイル形式 application/pdf
ISSN 0069-3227
NCID AN00142658
掲載誌情報 千葉大学園芸学部学術報告 Vol.19 page.29-38 (19711231)
情報源 The technical bulletin of Faculty of Horticulture, Chiba University
言語 日本語
著者版フラグ publisher

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