Chinese Bulletin of Botany ›› 2019, Vol. 54 ›› Issue (5): 569-581.DOI: 10.11983/CBB19038

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Advances in Light and Hormones in Regulating Seed Dormancy and Germination

Liwen Yang,Shuangrong Liu,Rongcheng Lin()   

  1. Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2019-02-26 Accepted:2019-07-09 Online:2019-09-01 Published:2020-03-10
  • Contact: Rongcheng Lin

Abstract: Plants have evolved to maintain the dormancy of freshly harvested seeds, which ensures that seeds do not germinate until environmental conditions are optimal. Therefore, dormancy helps seeds spread over long distances to ensure the survival of species. The transition from dormancy to germination is crucial to plant survival and for promoting yield and quality in agricultural production. Seed dormancy and germination are precisely regulated by diverse endogenous hormones and light signals. Light cues regulate seed dormancy and germination by affecting abscisic acid/gibberellic acid biosynthesis and signals. In this review, we summarize the key roles of the hormone pathway and light signal transduction pathways in regulating seed dormancy and germination. We also discuss the interactions (crosstalk) between phytohormone signals and light signals in seed dormancy and germination, in order to apply reference for regulating seed dormancy and germination by using light and hormones in agricultural production.

Key words: seed dormancy, seed germination, light signal, hormones, crosstalk