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- Tabata Ryo
- Division of Biological Science, Graduate School of Science, Nagoya University
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- Ohkubo Yuri
- Division of Biological Science, Graduate School of Science, Nagoya University
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- Matsubayashi Yoshikatsu
- Division of Biological Science, Graduate School of Science, Nagoya University
Bibliographic Information
- Other Title
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- 根の窒素吸収を制御する長距離移行ペプチド群
- ネ ノ チッソ キュウシュウ オ セイギョ スル チョウキョリ イコウ ペプチドグン
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Abstract
<p>Nitrogen (N) is a critical nutrient for plants but is often distributed unevenly in the soil. Plants therefore have evolved a systemic mechanism by which N starvation on one side of the root system leads to a compensatory upregulation of nitrate uptake on the other side. However, the molecular components underlying this long-distance signaling, called systemic N-demand signaling, have long remained elusive. We identified that N starvation-induced small 15-amino-acid secreted peptide, CEP (C-terminally encoded peptide), acts as a root-derived ascending N-demand signal to the shoot via xylem. CEP is recognized in the shoot by specific LRR-receptor kinase, CEPR (CEP receptor), that leads to the production of non-secreted polypeptide, CEPD (CEP downstream), as a secondary signal. CEPD acts as a shoot-derived descending signal to the root via phloem and ultimately upregulates nitrate transporter NRT2.1 gene in the roots. Thus, CEP family peptides induced on one side of the roots by local N starvation is able to mediate upregulation of NRT2.1 in the distant part of the roots. Our findings provide new insights into the molecular basis of plant adaptation to a dynamically fluctuating N environment.</p>
Journal
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- Regulation of Plant Growth & Development
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Regulation of Plant Growth & Development 53 (2), 93-97, 2018
The Japanese Society for Chemical Regulation of Plants
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Details 詳細情報について
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- CRID
- 1390282763081809280
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- NII Article ID
- 130007553692
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- NII Book ID
- AA11550064
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- ISSN
- 21896305
- 13465406
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- NDL BIB ID
- 029426203
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed