Root nodulation is controlled by sensing the R/ FR ratio through phytochrome signaling
Project/Area Number |
21657017
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Single-year Grants |
Research Field |
Plant molecular biology/Plant physiology
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Research Institution | Saga University |
Principal Investigator |
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Project Period (FY) |
2009 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥3,410,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2009: ¥1,600,000 (Direct Cost: ¥1,600,000)
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Keywords | 根粒 / 共生 / フィトクロム / 光形態形成 / 植物微生物相互作用 / ジャスモン酸 / ミヤコグサ / 光質 / 変異体 / 赤色光 / シグナル伝達 / スクリーニング |
Research Abstract |
Light is critical for supplying carbon to the energetically expensive, nitrogen-fixing symbiosis between legumes and rhizobia. In this study, I show that Phytochrome B(phyB) is part of the monitoring system to detect suboptimal light conditions, which normally suppress Lotus japonicus nodule development following Mesorhizobium loti inoculation. I found that the number of nodules produced by L. japonicus phyB mutants is significantly reduced compared to that of wild-type MG20. To explore causes other than photoassimilate production, the possibility that local control by the root genotype occurred was investigated by grafting experiments. The results showed that the shoot and not the root genotype is responsible for root nodule formation. To explore systemic control mechanisms exclusive of photoassimilation, we moved wild-type MG20 plants from white light to conditions that differed in their ratios of low or high red(R)/ far-red(FR) light. In low R/ FR light, the number of MG20 root nodules dramatically decreased compared to plants grown in high R/ FR even though photoassimilate content was higher for plants grown under low R/ FR. Also, the expression of jasmonic acid(JA)-responsive genes decreased in both low R/ FR light-grown wild-type and in white light-grown phyB mutant plants, and correlated with decreased JA-Ile content in the phyB mutant. Moreover, both infection thread formation and root nodule formation were positively influenced by JA treatment of wild-type plants grown in low
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] Lotus japonicus nodulation is photomorphogenetically controlled by sensing the R/ FR ratio through JA signaling2011
Author(s)
Akihiro Suzuki, Lalith Suriyagoda, Tamaki Shigeyama, Akiyoshi Tominaga, Masayo Sasaki, Yoshimi Hiratsuka, Aya Yoshinaga, Susumu Arima, Sakae Agarie, Tatsuya Sakai, Sayaka Inada, Yusuke Jikumaru, Yuji Kamiya, Toshiki Uchiumi, Mikiko Abe, Masatsugu Hashiguc
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Journal Title
Proceedings of the National Academy of Sciences
Volume: vol.108
Pages: 16837-16842
Related Report
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[Journal Article] Lotus japonicus nodulation is photomorphogenetically controlled by sensing the red/far red (R/FR) ratio through jasmonic acid (JA) signaling2011
Author(s)
Suzuki A, Suriyagoda L, Shigeyama T, Tominaga A, Sasaki M, Hiratsuka Y, Yoshinaga A, Arima S, Agarie S, Sakai T, Inada S, Jikumaru Y, Kamiya Y, Uchiumi T, Abe M, Hashiguchi M, Akashi R, Sato S, Kaneko T, Tabata S, Hirsch AM
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Journal Title
Proceedings of the National Academy of Sciences of the United States of America
Volume: 108
Issue: 40
Pages: 16837-16842
DOI
Related Report
Peer Reviewed
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[Journal Article] Effect of abscisic acid on symbiotic nitrogen fixation activity in the root nodules of Lotus japonicus.2010
Author(s)
A.Tominaga, M.Nagata, K.Futsuki, H.Abe, T.Uchiumi, M.Abe, K.Kucho, M.Hashiguchi, R.Akashi, A.Hirsch, S.Arima, A.Suzuki
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Journal Title
Plant Signaling & Behavior
Volume: 5
Pages: 440-443
Related Report
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[Journal Article] Additional cause for reduced JA-Ile in the root of a Lotus japonicus phyB mutant
Author(s)
Tamaki Shigeyama, Akiyoshi Tominaga, Susumu Arima, Tatsuya Sakai, Sayaka Inada, Yusuke Jikumaru, Yuji Kamiya, Toshiki Uchiumi, Mikiko Abe, Masatsugu Hashiguchi, Ryo Akashi, Ann M. Hirsch and Akihiro Suzuki
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Journal Title
Plant Signaling and Behavior
Volume: (in press)
Related Report
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[Presentation] Lotus japonicus nodulates when it sees red2011
Author(s)
Akihiro Suzuki, Lalith Suriyagoda, Tamaki Shigeyama, Akiyoshi Tominaga, Masayo Sasaki, Yoshimi Hiratsuka, Aya Yoshinaga, Susumu Arima, Sakae Agarie, Tatsuya Sakai, Sayaka Inada, Yusuke Jikumaru, Yuji Kamiya, Toshiki Uchiumi, Mikiko Abe, Masatsugu Hashiguc
Organizer
第17回世界窒素固定会議
Place of Presentation
フリーマントル(オーストラリア)
Related Report
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[Presentation] 根粒形成はJAシグナリングを介したR/ FR比受容反応である2011
Author(s)
重山珠紀, Lalith Suriyagoda, 富永晃好, 佐々木雅代, 平塚芳美, 吉永綾, 有馬進, 東江栄, 酒井達也, 稲田さやか, 軸丸祐介, 神谷勇治, 内海俊樹, 阿部美紀子, 橋口正嗣, 明石良, 佐藤修正, 金子貴一, 田畑哲之, Ann M. Hirsch, 鈴木章弘
Organizer
植物微生物研究会第21回研究交流会
Place of Presentation
岡山市
Related Report
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