Journal
PLANT SCIENCE
Volume 303, Issue -, Pages -Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2020.110771
Keywords
Auxin; Lateral root; Nitrate; NLP7; TAR2
Categories
Funding
- National Key Research and Development Program of China [2019YFD1000100]
- Natural Science Foundation of China [31972378]
- Agricultural Variety Improvement Project of Shandong Province [2019LZGC007]
- Shandong Province Program [2018CXGC0211, TSCY20190126]
- Ministry of Agriculture of China [CARS-27]
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The study revealed that NLP7 activates TAR2 expression by binding to its promoter, thereby regulating lateral root development in response to nitrate levels in the soil.
Nitrate is essential for plant growth and development. When nitrate availability is low, plants produce more lateral roots (LRs) to seek nitrate from the soil. In this study, by DNA electrophoretic mobility shift and luciferase assays, it was showed that NIN-like protein 7 (NLP7) transcription factor activated expression of TAR2 by directly binding to its promoter. Finally, through genetic analysis, it was speculated that NLP7 regulated LR development through TAR2. In conclusion, NLP7 binds to the TAR2 promoter and activates TAR2 expression, thereby promoting nitrate-dependent LR development.
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