The Jatropha FT ortholog is a systemic signal regulating growth and flowering time
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  • 作者:Jian Ye (14) (15)
    Yunfeng Geng (14)
    Bipei Zhang (14)
    Huizhu Mao (14)
    Jing Qu (14)
    Nam-Hai Chua (16)

    14. Temasek Life Sciences Laboratory
    ; National University of Singapore ; 1 Research Link ; Singapore ; 117604 ; Singapore
    15. State Key Laboratory of Plant Genomics
    ; Institute of Microbiology ; Chinese Academy of Sciences ; Beijing ; 100101 ; China
    16. Laboratory of Plant Molecular Biology
    ; Rockefeller University ; 1230 York Avenue ; New York ; NY ; 10021 ; USA
  • 关键词:Biodiesel ; Flowering locus T ; Jatropha ; Transgenic ; Grafting
  • 刊名:Biotechnology for Biofuels
  • 出版年:2014
  • 出版时间:December 2014
  • 年:2014
  • 卷:7
  • 期:1
  • 全文大小:5,044 KB
  • 参考文献:Approaches for optimising the greenhouse gas balance of biodiesel produced from rapeseed. Leipzig, Germany
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  • 刊物类别:Chemistry and Materials Science
  • 刊物主题:Biotechnology
    Plant Breeding/Biotechnology
    Renewable and Green Energy
    Environmental Engineering/Biotechnology
  • 出版者:BioMed Central
  • ISSN:1754-6834
文摘
Background Jatropha curcas is being promoted as a new bioenergy crop in tropical and subtropical regions due to its high amount of seed oil and its potential capacity to grow on marginal land for biofuel production. However, the productivity of the plant is constrained by the unfavorable flowering time and inflorescence architecture, which render harvesting of seeds time-consuming and labor-intensive. These flowering-related traits have limited further widespread cultivation of Jatropha. Results We identified a Jatropha curcas homolog of Flowering locus T (JcFT) and demonstrated its function by genetic complementation of the Arabidopsis ft mutant. The JcFT expression level was found to be remarkably correlated with leaf age. Overexpression of JcFT in Jatropha reduced flowering time and altered plant architecture by producing more branches. Grafting experiments suggested that the earlyflowering and alteration of plant architecture traits were graft-transmissible. We also showed that the FT-overexpressing transgenic Jatropha can be used as a root stock for grafting of scions derived from other Jatropha. Conclusion We generated early flowering transgenic Jatropha plants that accumulate higher levels of the florigen FT. Not only early flowering but also plant growth was affected in JcFT overexpression lines. More seeds can be produced in a shorter time frame by shortening the flowering time in Jatropha, suggesting the possibility to increase seed yield by manipulating the flowering time.

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