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. 2015 Sep;34(9):1561-8.
doi: 10.1007/s00299-015-1808-7. Epub 2015 May 19.

Functional characterization of PhGR and PhGRL1 during flower senescence in the petunia

Weiyuan Yang  1 , Juanxu Liu, Yinyan Tan, Shan Zhong, Na Tang, Guoju Chen, Yixun Yu
Affiliations

Functional characterization of PhGR and PhGRL1 during flower senescence in the petunia

Weiyuan Yang et al. Plant Cell Rep. 2015 Sep.

Abstract

Petunia PhGRL1 suppression accelerated flower senescence and increased the expression of the genes downstream of ethylene signaling, whereas PhGR suppression did not. Ethylene plays an important role in flowers senescence. Homologous proteins Green-Ripe and Reversion to Ethylene sensitivity1 are positive regulators of ethylene responses in tomato and Arabidopsis, respectively. The petunia flower has served as a model for the study of ethylene response during senescence. In this study, petunia PhGR and PhGRL1 expression was analyzed in different organs, throughout floral senescence, and after exogenous ethylene treatment; and the roles of PhGR and PhGRL1 during petunia flower senescence were investigated. PhGRL1 suppression mediated by virus-induced gene silencing accelerated flower senescence and increased ethylene production; however, the suppression of PhGR did not. Taken together, these data suggest that PhGRL1 is involved in negative regulation of flower senescence, possibly via ethylene production inhibition and consequently reduced ethylene signaling activation.

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References

    1. Cell. 1998 Jul 24;94(2):261-71 - PubMed
    1. Nat Biotechnol. 1997 May;15(5):444-7 - PubMed
    1. J Exp Bot. 2012 Jun;63(11):4151-64 - PubMed
    1. Proc Natl Acad Sci U S A. 2006 May 16;103(20):7923-8 - PubMed
    1. Plant Biol (Stuttg). 2011 Sep;13(5):719-24 - PubMed

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