miR172 Regulates Soybean Nodulation

文献类型： 外文期刊

第一作者： Yan, Zhe

作者： Yan, Zhe;Hossein, Md Shakhawat;Wang, Jun;Valdes-Lopez, Osweldo;Liang, Yan;Libault, Marc;Stacey, Gary;Wang, Jun;Qiu, Lijuan

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期刊名称：MOLECULAR PLANT-MICROBE INTERACTIONS （ 影响因子：4.171； 五年影响因子：4.836 ）

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收录情况： SCI

摘要： Micro-RNAs (miRNAs) play a pivotal role in the control of gene expression and regulate plant developmental processes. miRNA 172 (miR172) is a conserved miRNA in plants reported to control the expression of genes involved in developmental phase transition, floral organ identity, and flowering time. However, the specific role of miR172 in legume nodulation is undefined. Ectopic expression of soybean miR 172 resulted in an increase in nodule numbers in transgenic roots and an increase in the expressionof both symbiotic leghemoglobin and nonsymbiotic hemoglobin. These nodules showed higher levels of nitrogenase activity. Further analysis revealed a complex regulatory circuit in which miR 156 regulates miR172 expression and controls the level of an AP2transcription factor. The latter, either directly or indirectly, controls the expression of nonsymbiotic hemoglobin, which is essential for regulating the levels of nodulation.

分类号： Q94

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