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  Increasing carbon availability stimulates growth and secondary metabolites via modulation of phytohormones in winter wheat

Huang, J., Reichelt, M., Chowdhury, S., Hammerbacher, A., & Hartmann, H. (2017). Increasing carbon availability stimulates growth and secondary metabolites via modulation of phytohormones in winter wheat. Journal of Experimental Botany, 68(5), 1251-1263. doi:10.1093/jxb/erx008.

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資料種別: 学術論文

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BGC2599.pdf (出版社版), 6MB
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https://hdl.handle.net/11858/00-001M-0000-002D-0866-3
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BGC2599.pdf
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 作成者:
Huang, Jianbei1, 2, 著者           
Reichelt, Michael3, 著者           
Chowdhury, Somak2, 4, 著者           
Hammerbacher, Almuth3, 著者           
Hartmann, Henrik1, 著者           
所属:
1Tree Mortality Mechanisms, Dr. H. Hartmann, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497781              
2IMPRS International Max Planck Research School for Global Biogeochemical Cycles, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497757              
3Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              
4Molecular Biogeochemistry Group, Dr. G. Gleixner, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497775              

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 要旨: Phytohormones play important roles in plant acclimation to changes in environmental conditions. However, their role in whole-plant regulation of growth and secondary metabolite production under increasing atmospheric CO2 concentrations ([CO2]) is uncertain but crucially important for understanding plant responses to abiotic stresses. We grew winter wheat (Triticum aestivum) under three [CO2] (170, 390, and 680 ppm) over 10 weeks, and measured gas exchange, relative growth rate (RGR), soluble sugars, secondary metabolites, and phytohormones including abscisic acid (ABA), auxin (IAA), jasmonic acid (JA), and salicylic acid (SA) at the whole-plant level. Our results show that, at the whole-plant level, RGR positively correlated with IAA but not ABA, and secondary metabolites positively correlated with JA and JA-Ile but not SA. Moreover, soluble sugars positively correlated with IAA and JA but not ABA and SA. We conclude that increasing carbon availability stimulates growth and production of secondary metabolites via up-regulation of auxin and jasmonate levels, probably in response to sugar-mediated signalling. Future low [CO2] studies should address the role of reactive oxygen species (ROS) in leaf ABA and SA biosynthesis, and at the transcriptional level should focus on biosynthetic and, in particular, on responsive genes involved in [CO2]-induced hormonal signalling pathways.

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 日付: 2017-01-102017-02-172017-04
 出版の状態: 出版
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 識別子(DOI, ISBNなど): その他: BGC2599
DOI: 10.1093/jxb/erx008
 学位: -

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出版物 1

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出版物名: Journal of Experimental Botany
  その他 : J. Exp. Bot
種別: 学術雑誌
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出版社, 出版地: Oxford : Oxford University Press [etc.]
ページ: - 巻号: 68 (5) 通巻号: - 開始・終了ページ: 1251 - 1263 識別子(ISBN, ISSN, DOIなど): ISSN: 0022-0957
CoNE: https://pure.mpg.de/cone/journals/resource/954925413883