The mitogen-activated protein kinase kinase 9 (MKK9) modulates nitrogen acquisition and anthocyanin accumulation under nitrogen-limiting condition in Arabidopsis
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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其它資訊
摘要Nitrogen (N) plays important roles as both a macronutrient and signal in plant growth and development. However, our understanding of N signaling and/or response mechanisms in plants is still limited. Here, we show that the mitogen-activated protein kinase kinase 9 (MKK9) is involved in plant N responses in Arabidopsis by regulating production of anthocyanins and the ability of N acquisition under low N conditions. Transgenic plants that express a constitutively active version of MKK9 (MKK9DD) showed decreased accumulation of anthocyanins and reduced expression of key anthocyanin biosynthetic genes under low N condition compared to the plants expressing the inactive form of MKK9 (MKK9KR). The decreased anthocyanin accumulation could be due to the increased N level in the MKK9DD plants as these plants were shown to accumulate more N and have higher expression of N acquisition-related genes under low N condition as compared with the MKK9KR plants. Taken together, our results suggest that MKK9 plays a role in plant adaptation to low N stress by modulating both anthocyanin accumulation and N status.
出版社接受日期12.04.2017
著者Juan Luo, Xu Wang, Lei Feng, Yan Li, Jun-Xian He
期刊名稱Biochemical and Biophysical Research Communications
出版年份2017
月份6
日期3
卷號487
期次3
出版社Elsevier
頁次539 - 544
國際標準期刊號0006-291X
電子國際標準期刊號1090-2104
語言美式英語
關鍵詞MKK9,Low nitrogen stress, Anthocyanin accumulation, Nitrogen acquisition, Arabidopsis thaliana

上次更新時間 2020-17-10 於 01:33