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  1. B300 農学部/生命農学研究科
  2. B300a 雑誌掲載論文
  3. 学術雑誌

Shoot nitrate underlies a perception of nitrogen satiety to trigger local and systemic signaling cascades in Arabidopsis thaliana

http://hdl.handle.net/2237/00030408
http://hdl.handle.net/2237/00030408
a519010d-8175-423b-b3b0-d570092cd3d1
名前 / ファイル ライセンス アクション
Okamoto_2019_SSPN_compressed.pdf Okamoto_2019_SSPN_compressed (280.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-06-11
タイトル
タイトル Shoot nitrate underlies a perception of nitrogen satiety to trigger local and systemic signaling cascades in Arabidopsis thaliana
言語 en
著者 Okamoto, Yuki

× Okamoto, Yuki

WEKO 91848

en Okamoto, Yuki

Search repository
Suzuki, Takamasa

× Suzuki, Takamasa

WEKO 91849

en Suzuki, Takamasa

Search repository
Sugiura, Daisuke

× Sugiura, Daisuke

WEKO 91850

en Sugiura, Daisuke

Search repository
Kiba, Takatoshi

× Kiba, Takatoshi

WEKO 91851

en Kiba, Takatoshi

Search repository
Sakakibara, Hitoshi

× Sakakibara, Hitoshi

WEKO 91852

en Sakakibara, Hitoshi

Search repository
Hachiya, Takushi

× Hachiya, Takushi

WEKO 91853

en Hachiya, Takushi

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 This is an Accepted Manuscript of an article published by Taylor & Francis Group in Soil Science and Plant Nutrition on 27/10/2018, available online: http://www.tandfonline.com/10.1080/00380768.2018.1537643.
キーワード
主題Scheme Other
主題 Internal nitrate
キーワード
主題Scheme Other
主題 nitrate signaling
キーワード
主題Scheme Other
主題 nitrogen transport
キーワード
主題Scheme Other
主題 RNA sequencing
キーワード
主題Scheme Other
主題 systemic regulation
抄録
内容記述 Nitrate is an important ion for plant growth and development. It serves not only as a building block for amino acid synthesis but also as a signaling molecule. Changes in the exogenous nitrate concentrations affect the expression of nitrate-responsive genes within minutes. Following these rapid transcriptional events, nitrate and its downstream organic nitrogen (N) compounds accumulate in the plant body, inducing secondary responses to the internal N level. Nevertheless, the respective roles of nitrate and organic N in triggering plant responses to internal N remain to be clarified. Several studies have implied that internal nitrate levels regulate root N uptake independent of the levels of N assimilation products. However, little is known about the specific effects of internal nitrate levels on plant growth and gene expression. To manipulate the internal nitrate levels independently of internal organic N, we grew wild-type Arabidopsis and a nitrate reductase (NR)-null mutant under a series of modified N conditions. Using their shoots and roots, we performed analyses of plant growth and RNA sequencing. The results showed that elevated shoot nitrate accumulation in the NR-null mutant was accompanied by increased expression of nitrate assimilatory genes in the shoots, decreased gene expression of high-affinity nitrate and ammonium uptake transporters in the roots, and decreased lateral root growth. Furthermore, the genes normally induced by N deficiency were significantly downregulated both in the shoots and roots of the NR-null mutant, compared with the wild-type. Our transcriptional profiling suggests that the transcription factors NLP7 and NIGT mediate a wide range of these transcriptional responses. Taken together, we conclude that shoot nitrate acts as a N satiety signal to trigger local and systemic signaling cascades in A. thaliana. The present study illustrates an adaptive strategy of plants to survive in N-limited environments, depending on the residual nitrate storage.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 Published online: 27 Oct 2018. ファイル公開:2019/10/27
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Taylor & Francis
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1080/00380768.2018.1537643
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0038-0768
ISSN(Online)
収録物識別子タイプ EISSN
収録物識別子 1747-0765
書誌情報 en : Soil Science and Plant Nutrition

巻 65, 号 1, p. 56-64, 発行日 2019
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