期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 71, 期 15, 页码 4405-4414出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erz536
关键词
Lateral root; local signaling; long-distance communication; nitrate signaling; root foraging; root hair; systemic signaling
资金
- National Key RAMP
- D Program of China [2016YFD0100701]
- National Natural Science Foundation of China [31570183, 31529001, 31370215]
- China Postdoctoral Science Foundation [2018M632476]
Nitrogen (N) is one of the most important macronutrients for plant growth and development. However, the concentration and distribution of N varies in soil due to a variety of environmental factors. In response, higher plants have evolved a developmentally flexible root system to efficiently take up N under N-limited conditions. Over the past decade, significant progress has been made in understanding this form of plant 'root-foraging' behavior, which is controlled by both a local and a long-distance systemic nitrate signaling pathway. In this review, we focus on the key components of nitrate perception, signaling, and transduction and its role in lateral root development. We also highlight recent findings on the molecular mechanisms of the nitrate systemic signaling pathway, including small signaling peptides involved in long-distance shoot-root communication. Furthermore, we summarize the transcription factor networks responsible for nitrate-dependent lateral root and root hair development.
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