Comparative transcriptome analyses under individual and combined nutrient starvations provide insights into N/P/K interactions in rice

文献类型： 外文期刊

第一作者： Dai, Senhuan

作者： Dai, Senhuan;Wu, Haicheng;Chen, Huiying;Qin, Cheng;Zeng, Houqing;Wang, Zihui;Yu, Xin;Zhu, Yiyong;Wang, Long;Jia, Xianqing;Yi, Keke

作者机构：

关键词： Nitrogen; Phosphorus; Potassium; Nutrient starvation response; Nutrient interaction; Nutrient stress combination; Regulatory network; Transcriptomics

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.5； 五年影响因子：6.4 ）

ISSN： 0981-9428

年卷期： 2023 年 197 卷

页码：

收录情况： SCI

摘要： Crops often suffer from simultaneous limitations of multiple nutrients in soils, including nitrogen (N), phos-phorus (P) and potassium (K), which are three major macronutrients essential for ensuring growth and yield. Although plant responses to individual N, P, and K deficiency have been well documented, our understanding of the responses to combined nutrient deficiencies and the crosstalk between nutrient starvation responses is still limited. Here, we compared the physiological responses in rice under seven kinds of single and multiple low nutrient stress of N, P and K, and used RNA sequencing approaches to compare their transcriptome changes. A total of 13,000 genes were found to be differentially expressed under all these single and multiple low N/P/K stresses, and 66 and 174 of them were shared by all these stresses in roots and shoots, respectively. Functional enrichment analyses of the DEGs showed that a group of biological and metabolic processes were shared by these low N/P/K stresses. Comparative analyses indicated that DEGs under multiple low nutrient stress was not the simple summation of single nutrient stress. N was found to be the predominant factor affecting the transcriptome under combined nutrient stress. N, P, or K availability exhibited massive influences on the transcriptomic re-sponses to starvation of other nutrients. Many genes involved in nutrient transport, hormone signaling, and transcriptional regulation were commonly responsive to low N/P/K stresses. Some transcription factors were predicted to regulate the expression of genes that are commonly responsive to N, P, and K starvations. These results revealed the interactions between N, P, and K starvation responses, and will be helpful for further elucidation of the molecular mechanisms underlying nutrient interactions.

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