AtCPK6, a functionally redundant and positive regulator involved in salt/drought stress tolerance in Arabidopsis

被引：173

作者：

Xu, Jing ^{[1
,2
]}

Tian, Yong-Sheng ^{[1
]}

Peng, Ri-He ^{[1
]}

Xiong, Ai-Sheng ^{[1
]}

Zhu, Bo ^{[1
]}

Jin, Xiao-Fen ^{[1
]}

Gao, Feng ^{[1
]}

Fu, Xiao-Yan ^{[1
]}

Hou, Xi-Lin ^{[2
]}

Yao, Quan-Hong ^{[1
]}

机构：

[1] Shanghai Acad Agr Sci, Agrobiotechnol Res Inst, Shanghai 201106, Peoples R China

[2] Nanjing Agr Univ, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China

来源：

PLANTA | 2010年 / 231卷 / 06期

关键词：

Arabidopsis; Drought; Functionally redundant; Salt; Stress tolerance; DEPENDENT PROTEIN-KINASE; ABSCISIC-ACID; GENE-EXPRESSION; SIGNAL-TRANSDUCTION; PROLINE ACCUMULATION; NICOTIANA-TABACUM; LOW-TEMPERATURE; DROUGHT; SALT; COLD;

D O I：

10.1007/s00425-010-1122-0

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The calcium-dependent protein kinase (CDPK) family is needed in plant signaling during various physiological pathways. The Arabidopsis AtCPK6 gene belongs to the subclass of stress-inducible CDPKs, which is stimulated by salt and osmotic stress. To elucidate the physiological function of AtCPK6, transgenic Arabidopsis plants under the control of double CaMV 35S promoter were obtained. AtCPK6 over-expressing plants showed enhanced tolerance to salt/drought stresses. The elevated tolerance of the AtCPK6 over-expressing plants was confirmed by the change of proline and malondialdehyde (MDA). Real-time PCR analyses revealed that the expression levels of several stress-regulated genes were altered in AtCPK6 over-expressing plants. However, cpk6 mutant displayed no obvious difference with control. These results are likely to indicate that AtCPK6 is functionally redundant and a positive regulator involved in the tolerance to salt/drought stress in Arabidopsis.

引用

页码：1251 / 1260

页数：10

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