Ethephon elicits protection against Erysiphe necator in grapevine

被引：56

作者：

Belhadj, Assia ^{[1
]}

Telef, Nadege ^{[1
]}

Cluzet, Stephanie ^{[1
]}

Bouscaut, Jerome ^{[2
]}

Corio-Costet, Marie-France ^{[2
]}

Merillon, Jean-Michel ^{[1
]}

机构：

[1] Univ Bordeaux 2, Inst Sci Vigne & Vin, Lab Sci Vegetales Mycol & Biotechnol, EA 3675,UFR Sci Pharmaceut, F-33076 Bordeaux, France

[2] INRA, ENITAB, UMR Sante Vegetale, F-33883 Villenave Dornon, France

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2008年 / 56卷 / 14期

关键词：

elicitor; powdery mildew; phytoalexins; PR proteins; Vitis vinifera;

D O I：

10.1021/jf800578c

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

The grapevine (Vitis vinifera) is susceptible to many pathogens such as Botrytis cinerea, Plasmopara viticola, Erysiphe necator, and Eutypa lata. Phytochemicals are used extensively in vineyards to reduce pathogen infections, but the appearance of pesticide-resistant pathogen strains and the need for environmental protection require the use of alternative strategies. The phytohormone ethylene is assumed to play a role in the development of disease resistance. In the present study, we have treated grapevine foliar cuttings (Cabernet Sauvignon) with ethylene-releasing ethephon. This resulted in an increase in the number of pathogenesis-related protein (CHIT4c, PIN, PGIP, and GLU) gene copies and in an enhancement of phytoalexin biosynthesis by inducing the PAL and STS genes that correlated with the accumulation of stilbenes (antimicrobial compounds). Moreover, ethephon treatment triggered the protection of grapevine detached leaves and grapevine foliar cuttings against Etysiphe necator, the causal agent of powdery mildew (64% and 70%, respectively). These studies emphasize the major role of ethylene in grapevine defense.

引用

页码：5781 / 5787

页数：7

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[51] Development and validation of real-time quantitative reverse transcriptase-polymerase chain reaction for monitoring gene expression in cardiac myocytes in vitro [J].