Suppression of Lesion Enlargement of Bacterial Brown Stripe of Rice by Living Cells or Cell Extracts of Acidovorax spp.
スポンサーリンク
概要
- 論文の詳細を見る
Pathogenicity of 13 strains belonging to two species, including three subspecies, of phytopathogenic bacteria in the genus Acidovorax was tested on five plant species including rice. The pathogenicity of an individual strain to rice was compared with its ability to suppress lesion enlargement of bacterial brown stripe on rice sheath after inoculation with living cells or cell extracts (CEs) of each strain. On the basis of the pathogenicity tests, the two species and the three subspecies were clearly distinguishable on the plants. Three strains isolated from rice and strain MAFF 302183 from corn were pathogenic to rice and nine strains were not. Inoculation with A. avenae MAFF 301505 (a virulent strain on rice) mixed with living cells of an avirulent strain or the virulent strain MAFF 302183 which produced an anti-bacterial substance against MAFF 301505 suppressed lesion enlargement in comparison to a single inoculation with the virulent strain. Inoculation mixed with CEs, however, failed to suppress lesion enlargement unless the CEs contained the anti-bacterial substance. Pre-inoculation with living cells of each avirulent strain suppressed the enlargement of the lesion caused by a challenge inoculation with the virulent strain MAFF 301505 6 hours after pre-inoculation. On the other hand, pre-inoculation with CEs derived from all strains suppressed lesion enlargement, but the degree of suppression by nine avirulent strains was stronger than that of four virulent strains. The CEs of all strains failed to elicit the hypersensitive reaction (HR) in tobacco but living cells of all strains except for MAFF 301576 elicited the HR. These results suggest that the CEs may contain substances which induce the suppression of lesion enlargement on rice with no activity to elicit tobacco HR. The difference in the ability of the CEs from virulent and avirulent strains to induce suppression may be related to the virulence of the bacteria.
- 日本植物病理学会の論文
日本植物病理学会 | 論文
- 育苗圃におけるイチゴ炭疽病の潜在感染率の推移と発病との関係(関東部会講演要旨,平成18年度地域部会講演要旨)
- (171)北海道の田畑輪換圃場を利用したイチゴリレー苗生産におけるColletotrichum gloeosporioidesの潜在感染とその病原性(平成14年度 日本植物病理学会大会講演要旨)
- (170)北海道の田畑輪換圃場を利用したイチゴリレー苗生産による炭疽病・萎凋病の防除(平成14年度 日本植物病理学会大会講演要旨)
- (47) Alternaria alternataの形質転換体における外来遺伝子の増幅 (平成2年度大会講演要旨)
- (8) 相同的組み換えによるAlternaria alternataの形質転換と形質転換体における外来遺伝子の安定性 (関西部会講演要旨)