Ectopic expression of a Brassica rapa AINTEGUMENTA gene (BrANT-1) increases organ size and stomatal density in Arabidopsis

文献类型： 外文期刊

第一作者： Ding, Qian

作者： Ding, Qian;Cui, Bing;Li, Jingjuan;Li, Huayin;Zhang, Yihui;Lv, Xiaohui;Qiu, Nianwei;Liu, Lifeng;Wang, Fengde;Gao, Jianwei;Ding, Qian;Cui, Bing;Li, Jingjuan;Li, Huayin;Zhang, Yihui;Lv, Xiaohui;Qiu, Nianwei;Liu, Lifeng;Wang, Fengde;Gao, Jianwei;Ding, Qian;Cui, Bing;Li, Jingjuan;Li, Huayin;Zhang, Yihui;Lv, Xiaohui;Qiu, Nianwei;Liu, Lifeng;Wang, Fengde;Gao, Jianwei;Cui, Bing;Qiu, Nianwei

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2018 年 8 卷

页码：

收录情况： SCI

摘要： The AINTEGUMENTA-like (AIL) family plays a central role in regulating the growth and development of organs in many plants. However, little is known about the characteristics and functions of the AIL family in Chinese cabbage (Brassica rapa L. ssp. pekinensis). In this study, a genome-wide analysis was performed to identify the members of the AIL family in Chinese cabbage. We identified three ANT genes and six ANT-like genes of Chinese cabbage, most of which were differentially expressed in different organs or tissues. Furthermore, compared with the wild-type line, the size of different organs in the 35S-BrANT-1 line was significantly increased by promoting cell proliferation. Meanwhile, over-expression of BrANT-1 also increases the stomatal number and delays the leaf senescence. Transcriptome analyses revealed that a set of cell proliferation and stoma development genes were up-regulated, while the senescence-associated genes were down-regulated, suggesting these genes may be involved in BrANT-1 regulated processes for controlling organ size, stomatal density and leaf senescence. In summary, this study offers important insights into the characteristics and functions of the ANT genes in Chinese cabbage, and provides a promising strategy to improve yield or head size in Chinese cabbage breeding programs.

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