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《Journal of Shanghai Normal University(Natural Sciences)》 2018-06
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Identification and expression analysis of ascorbate peroxidase gene family in spinach

YU Zhengyu;GE Chenhui;WANG Xiaoli;XU Chenxi;WANG Quanhua;CAI Xiaofeng;Development Center of Plant Germplasm Resources,College of Life Sciences,Shanghai Normal University;  
Using bioinformatic methods,we obtained 7 possible ascorbate peroxidase( APX) genes through the whole genome of spinach. Systematic analysis focused on physicochemical properties,gene structure,conserved motifs and phylogenetic analysis were performed. These 7 genes were divided into 4 groups by constructing a Neighbor-Joining tree. The gene structure analysis showed that So APXs were composed of 5 ~ 9 exons. Subcellular localization prediction indicated that most of the APX proteins were located in the cytoplasm. Real-time quantitative polymerase chain reaction( qRT-PCR) was used to analyze the expression pattern of So APXs in 8 different tissues of spinach. The results showed that So APXs were constitutive expressed in various tissues and organs of spinach. The So APX1 and So APX3,and So APX4 and So APX5 showed the similar expression patterns. The So APX2 displayed the high expression level in young leaves and So APX7 was high expressed in male flowers. Furthermore,the transcription levels of So APXs were induced responding to low temperature and oxidative stress. Salt stress and drought stress also stimulated the expression of most So APXs. These results showed that So APXs may play a role in salt resistance,cold resistance,drought resistance and oxidation resistance processes of spinach.
【Fund】: 国家自然科学基金青年基金(31501754);; 上海市科研创新行动计划(16391901000);; 上海植物种质资源工程技术研究中心项目(17DZ2252700);; 上海市协同创新中心项目(ZF1205)
【CateGory Index】: S636.1
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