期刊
EUROPEAN JOURNAL OF PLANT PATHOLOGY
卷 118, 期 1, 页码 43-57出版社
SPRINGER
DOI: 10.1007/s10658-007-9111-2
关键词
biocontrol; grey mould; induced resistance; rhizobacteria; Vitis vinifera
In this study, the biocontrol ability of seven grapevine-associated bacteria, previously reported as efficient against Botrytis cinerea under in vitro conditions, was evaluated in two vineyard orchards with the susceptible cv. Chardonnay during four consecutive years (2002-2005). It was shown that the severity of disease on grapevine leaves and berries was reduced to different levels, depending on the bacterial strain and inoculation method. Drenching the plant soil with these bacteria revealed a systemic resistance to B. cinerea, even without renewal of treatment. Accordingly, this resistance was associated with a stimulation of some plant defense responses such as chitinase and beta-1,3-glucanase activities in both leaves and berries. In leaves, chitinase activity increased before veraison (end-July) while beta-1, 3-glucanase reached its maximum activity at ripening (September). Reverse patterns were observed in berries, with beta-1,3-glucanase peaking at full veraison (end-August) and chitinase at a later development stage. Highest activities were observed with Acinetobacter lwoffii PTA-113 and Pseudomonas fluorescens PTA-CT2 in leaves, and with A. lwoffii PTA-113 and Pantoea agglomerans PTA-AF1 in berries. These results have demonstrated an induced protection of grapevine against B. cinerea by selected bacteria under field conditions, and suggest that induced resistance could be related to a stimulation of plant defense reactions in a successive manner.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据