To Be a Flower or Fruiting Branch: Insights Revealed by mRNA and Small RNA Transcriptomes from Different Cotton Developmental Stages

文献类型： 外文期刊

第一作者： Quan Sun;;Xiongming Du;;Chaowei Cai

作者： Quan Sun;Xiongming Du;Chaowei Cai;Lu Long;Sai Zhang;Peng Qiao;Weina Wang;Kexue Zhou;Guanghao Wang;Xin Liu;Hui Zhang;Shuaipeng Geng;Can Yang;Wei Gao;Jianchuan Mo;Chen Miao;Chunpeng Song;Yingfan Cai

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： 2016 年 6 卷

页码：

收录情况： SCI

摘要： The architecture of the cotton plant, including fruit branch formation and flowering pattern, is the most important characteristic that directly influences light exploitation, yield and cost of planting. Nulliplex branch is a useful phenotype to study cotton architecture. We used RNA sequencing to obtain mRNA and miRNA profiles from nulliplex- and normal-branch cotton at three developmental stages. The differentially expressed genes (DEGs) and miRNAs were identified that preferentially/specifically expressed in the pre-squaring stage, which is a key stage controlling the transition from vegetative to reproductive growth. The DEGs identified were primarily enriched in RNA, protein, and signalling categories in Gossypium barbadense and Gossypium hirsutum. Interestingly, during the pre-squaring stage, the DEGs were predominantly enriched in transcription factors in both G. barbadense and G. hirsutum, and these transcription factors were mainly involved in branching and flowering. Related miRNAs were also identified. The results showed that fruit branching in cotton is controlled by molecular pathways similar to those in Arabidopsis and that multiple regulated pathways may affect the development of floral buds. Our study showed that the development of fruit branches is closely related to flowering induction and provides insight into the molecular mechanisms of branch and flower development in cotton.

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