Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (12): 37-44.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0506

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Research Progress on Mechanism of ARF and Aux/IAA Regulating Fruit Development and Ripening

HU Xiao1, HOU Xu2, YUAN Xue2, GUAN Dan1, LIU Yue-ping2, 3   

  1. 1.Plant Science and Technology College,Beijing University of Agriculture,Beijing 102206;
    2. College of Biological Science and Engineering,Beijing University of Agriculture,Beijing 102206;
    3. Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees,Beijing 102206
  • Received:2017-06-16 Online:2017-12-25 Published:2017-12-21

Abstract: The auxin is one of key essential plant hormones regulating fruit development and ripening. Aux/IAAs and auxin response factors(ARFs)play central roles in auxin-mediated signal transduction mechanism. ARF proteins combine with the auxin-responsive elements in the promoters of auxin-responding genes to promote or inhibit gene expression. Aux/IAA proteins,through specific binding of their common domains III and IV with ARF,regulate the transcriptional activity of early response genes of auxin. The researches indicate that ARF participates in the regulation of fruit morphology development,hardness,sugar accumulation,etc.;Aux/IAA plays a significant role in pollination and fruit morphology etc. In addition,the interactions of Aux/IAA and ARF or themselves regulate downstream gene expressions,which is the main mechanism of plant response to auxin regulation. In this review,we summarized the structures of ARF and Aux/IAA,the distribution characteristics in varied plants,and the regulating function in fruit ripening development and signal transduction. The research status on the interaction of ARFs and Aux/IAA was also discussed, which will provide knowledge for reveal the mechanism of auxin control of fruit development and ripening.

Key words: ARF, Aux/IAA, fruit, development and ripening, regulating mechanism