Regulation of abscisic acid on plant resistance to water stress

23 1 2011 1 Chinese Bulletin of Life Sciences Vol. 23, No. 1 Jan., 2011 (1 / 475004 2 450000) (abscisic acid, ABA) A BA (hydrogen peroxide, H 2 O 2 ) (nitric oxide, NO) Ca 2+ ABA Q946.885.6; Q945.17 A Regulation of abscisic acid on plant resistance to water stress ZHAO Xiang 1, LI Na 1,2, WANG Peng-Tao 1, ZHANG Xiao 1 * (1 Henan Key Laboratory of Plant Stress Biology/School of Life Sciences Henan University, Kaifeng 475004, China; 2 Zhengzhou Shuqing Medical College, Faculty of Basic Medicine, Zhengzhou 450000, China) Abstract: Drought, salinity, low temperature could lead to water stress in plant growth. Plant perceives water stress and induces the synthesis of abscisic acid (ABA). ABA could induce stomatal closure or inhibit stomatal opening to reduce transpiration. This paper focuses on the function of plant hormone ABA and its downstream signal intermediating (H 2 O 2, NO and Ca 2+ ) in stomotal movement of plant to establish the basic model of regulation of ABA on stomotal movement under water stress. Key words: abscisic acid; stomotal movement; water stress 20 30 20 60 (abscisic acid, ABA) ABA [1-3] ABA [4] ABA ABA ABA 2010-06-28 2010-07-26 [5-7] (30871300) (2009YBZR039) H E-mail: xzhang@henu.edu.cn. 2 O 2 NO Ca 2+ ABA

116 ABA ABA (abscisic aldehyde oxidase, AAO3) ABA [21] ABA [8-10] ABA [11,12] ABA ABA ABA ABA [13] ABA ABA Ikegami [14] ABA ABA CHLH Mg 2+ (Mg- chelatase)h ABA ABA 4 h [22] CHLH ABA ABA CHLH ABA [23] ABA ABA CHLH [ 13 C] ABA ABA Liu [24] ABA GCR2 G α GPA1 Ch ri stm an n [15] A B A (hydraulic signal) GCR2 ABA GCR2 ABA GCR2 ABA Nambara Marion-Poll [16] [25] GCR2 ABA ABA GCR2 [26] C 15 Pandey [27] (farnesyl pyrophosphate, FPP) FPP GTG1 GTG2(GPCR G ) 15 ABA ABA (mevalonic acid, MVA) C 40 GTP GDP C 15 GTGs ABA ABA (xanthoxin, XAN) GTGs ABA ABA C 40 ABA ABA PYR1/RCAR1 [28] ABA PYR1 ( ) α/β ABA ABA ABA ABA [16] gcr2 ABA ABA PP2C(ABI1) ABA [17] PP2C SnRK2s(OST1) (zeaxanthin epoxidase, ZEP) ABA SnRK2s(OST1) [28-31] DNA ABA ABA2 [18] 9- (9-cis- ABA epoxycarotenoid dioxygenase, NCED) 9-9- H 2 O 2 K + [19] NCED ABA ph ABA [6,7,32] [20] ABA H + -ATPase ABA

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