Over-expression of Arabidopsis DnaJ (Hsp40) contributes to NaCl-stress tolerance | Zendy

Zhichang Zhao | Zendy; Wanrong Zhang | Zendy; Jinping Yan | Zendy; Jianjun Zhang | Zendy; Zhen Li Xufeng Liu | Zendy; Yi Yang | Zendy

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Over-expression of Arabidopsis DnaJ (Hsp40) contributes to NaCl-stress tolerance

Author(s) -

Zhichang Zhao,

Wanrong Zhang,

Jinping Yan,

Jianjun Zhang,

Zhen Li Xufeng Liu,

Yi Yang

Publication year - 2010

Publication title -

african journal of biotechnology

Language(s) - English

Resource type - Journals

ISSN - 1684-5315

DOI - 10.5897/ajb09.1450

Subject(s) - arabidopsis , transgene , heat shock protein , sense (electronics) , genetically modified crops , biology , in vitro , microbiology and biotechnology , genetics , chemistry , gene , mutant

DnaJ (Hsp40), a heat shock protein, is a molecular chaperones responsive to various environmental stress. To analyze the protective role of DnaJ, we obtained sense transgenic Arabidopsis plants that constitutively expressed elevated levels of DnaJ. In this study, sense transgenic plants show large thinner, fade color and malformed leaves, as well as less floss of back leaves. Plants with enhanced levels of DnaJ in their transgenic sense lines exhibited tolerance to NaCl stress. Under 120 mM NaCl, root length was higher in transgenic sense plants than wild-type plants. In vitro expression system, DnaJ protein shows tolerance to high NaCl. These results suggest that over-expression of DnaJ can confer NaCl-stress tolerance.

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