期刊
BIOLOGICAL CONTROL
卷 92, 期 -, 页码 7-16出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biocontrol.2015.08.005
关键词
Grapevine trunk disease; Phaeomoniella chlamydospora; Pythium oligandrum; Oomycete; Induction of resistance; Wood necrosis
资金
- French Ministry of Agriculture [V1302]
- Tunisian Ministry of Scientific Research
- Poupelain Foundation
- Biovitis
Biological control of Phaeomoniella chlamydospora, a pathogen involved in Esca, a grapevine trunk wood disease, was performed using the oomycete, Pythium oligandrum. Three 4-month greenhouse assays showed that necrosis of Vitis vinifera L. cv. Cabernet Sauvignon cuttings caused by P. chlamydospora was significantly reduced (40-50%) when P. oligandrum colonized the plant root systems. The expression of a set of 22 grapevine defense genes was then quantified by real-time polymerase chain reaction to determine plant responses in the interaction between P. oligandrum/V. vinifera L./P. chlamydospora. In the trunk, specific grapevine responses to the different treatments (control, P. oligandrum, P. chlamydospora and P. oligandrum + P. chlamydospora treatments) were significantly differentiated. Expression levels of 6 genes associated with P. chlamydospora infection showed higher induction than when plants were pre-treated with P. oligandrum. These genes are involved in various pathways (PR proteins, phenylpropanoid pathways, oxylipin and oxydo-reduction systems). (C) 2015 Elsevier Inc. All rights reserved.
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