Transgenic tobacco plants overexpressing chitinases of fungal origin show enhanced resistance to biotic and abiotic stress agents

被引：173

作者：

de las Mercedes Dana, Maria ^{[1
]}

Pintor-Toro, Jose A. ^{[1
]}

Cubero, Beatriz ^{[1
]}

机构：

[1] CSIC, Inst Recursos Nat & Agrobiol Sevilla, Seville 41012, Spain

来源：

PLANT PHYSIOLOGY | 2006年 / 142卷 / 02期

关键词：

DISEASE RESISTANCE; HYDROGEN-PEROXIDE; SALICYLIC-ACID; OSMOTIC-STRESS; OXIDATIVE BURST; GENE-EXPRESSION; PROTEIN-KINASE; SALT TOLERANCE; RICE; RESPONSES;

D O I：

10.1104/pp.106.086140

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Genes encoding defense-related proteins have been used to alter the resistance of plants to pathogens and other environmental challenges, but no single fungal gene overexpression has produced broad-spectrum stress resistance in transgenic lines. We have generated transgenic tobacco (Nicotiana tabacum) lines that overexpress the endochitinases CHIT33 and CHIT42 from the mycoparasitic fungus Trichoderma harzianum and have evaluated their tolerance to biotic and abiotic stress. Both CHIT33 and CHIT42, individually, conferred broad resistance to fungal and bacterial pathogens, salinity, and heavy metals. Such broad-range protective effects came off with no obvious detrimental effect on the growth of tobacco plants.

引用

页码：722 / 730

页数：9

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