Phylogeny and expression pattern of starch branching enzyme family genes in cassava (Manihot esculenta Crantz) under diverse environments
文献类型: 外文期刊
作者: Pei, Jinli 1 ; Wang, Huijun 2 ; Xia, Zhiqiang 3 ; Liu, Chen 3 ; Chen, Xin 3 ; Ma, Pingan 3 ; Lu, Cheng 3 ; Wang, Wenquan 4 ;
作者机构: 1.Hainan Univ, Coll Agr, Haikou 570228, Peoples R China
2.Qiongzhou Univ, Sanyan 572022, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Minist Agr, Haikou 571101, Peoples R China
4.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biote
关键词: Cassava;Starch branching enzyme;Differential expression analysis;Phylogenetic analysis;Promoter analysis;Abiotic stress treatment
期刊名称:MOLECULAR AND CELLULAR BIOCHEMISTRY ( 影响因子:3.396; 五年影响因子:3.282 )
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收录情况: SCI
摘要: Starch branching enzyme (SBE) is one of the key enzymes involved in starch biosynthetic metabolism. In this study, six SBE family genes were identified from the cassava genome. Phylogenetic analysis divided the MeSBE family genes into dicot family A, B, C, and the new group. Tissue-specific analysis showed that MeSBE2.2 was strongly expressed in leaves, stems cortex, and root stele, and MeSBE3 had high expression levels in stem cortex and root stele of plants in the rapid growth stage under field condition, whereas the expression levels of MeSBE2.1, MeSBE4, and MeSBE5 were low except for in stems cortex. The transcriptional activity of MeSBE2.2 and MeSBE3 was higher compared with other members and gradually increased in the storage roots during root growth process, while the other MeSBE members normally remained low expression levels. Expression of MeSBE2.2 could be induced by salt, drought, exogenous abscisic acid, jasmonic acid, and salicylic acid signals, while MeSBE3 had positive response to drought, salt, exogenous abscisic acid, and salicylic acid in leaves but not in storage root, indicating that they might be more important in starch biosynthesis pathway under diverse environments.
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