RNA sequencing reveals high resolution expression change of major plant hormone pathway genes after young seedless grape berries treated with gibberellin
文献类型: 外文期刊
第一作者: Chai, Lijuan
作者: Chai, Lijuan;Li, Yanmei;Ma, Huiqin;Chen, Shangwu;Perl, Avihai;Zhao, Fengxia
作者机构:
关键词: Additional berry enlargement;Gibberellin acid treatment;Plant hormone cross talk;Plant hormone gene expression change;RNA sequencing;Seedless grape berry
期刊名称:PLANT SCIENCE ( 影响因子:4.729; 五年影响因子:5.132 )
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收录情况: SCI
摘要: Seedless varieties are of particular importance to the table-grape and raisin industries. Gibberellin (GA) application is widely used in the early stages of seedless berry development to increase berry size and economic value. However, the underlying mechanism of GA induction of berry enlargement is not well understood. Here, RNA-sequencing analysis of 'Centennial Seedless' (Vitis vinifera L.) berries treated with GA(3) 12 days after flowering is reported. Pair-wise comparison of GA(3)-treated and control samples detected 165, 444, 463 genes with an over two-fold change in expression 1, 3, and 7 days after GA(3) treatment, respectively. The number of differentially expressed genes increased with time after GA(3) treatment, and the differential expression was dominated by downregulation. Significantly modulated expression included genes encoding synthesis and catabolism to manage plant hormone homeostasis, hormone transporters, receptors and key components in signaling pathways; exogenous GA(3) induced multipoint cross talk with auxin, cytokinin, brassinosteroid, ABA and ethylene. The temporal gene-expression patterns of cell-wall-modification enzymes, cytoskeleton and membrane components and transporters revealed a pivotal role for cell-wall-relaxation genes in GA(3)-induced berry enlargement. Our results provide the first sequential transcriptomic atlas of exogenous GA(3)-induced berry enlargement and reveal the complexity of GA(3)'s effect on berry sizing. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
分类号: Q94
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