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园艺学报 ›› 2012, Vol. 39 ›› Issue (9): 1665-1672.

• 综述 • 上一篇    下一篇

苹果果实成熟过程中ACC 合成酶基因作用机理研究进展

李 通, 张志宏, 王爱德   

  1. (沈阳农业大学园艺学院,沈阳 110866)
  • 出版日期:2012-09-25 发布日期:2012-09-25

The Role of 1-aminocyclopropane-1-carboxylate Synthase Genes in Apple Fruit Ripening

 LI   Tong, ZHANG  Zhi-Hong, WANG  Ai-De   

  1. (College of Horticulture,Shenyang Agricultural University,Shenyang 110866,China)
  • Online:2012-09-25 Published:2012-09-25

摘要: 苹果(Malus × domestica Borkh.)果实贮藏期的长短直接决定着其采后的经济价值,其与果实在室温下的软化率有直接的关系。乙烯能够调控苹果成熟和软化过程,因此,苹果果实软化和乙烯之间的关系得到了广泛的研究。ACC合成酶(1–氨基环丙烷–1–羧酸合成酶,ACS)是植物乙烯合成中的关键酶,通过检索苹果全基因组序列,共发现20个ACC合成酶(ACS)基因,其中MdACS1MdACS3已经被证明与苹果果实成熟有着直接关系,并在不同的时空点调控果实成熟过程。对ACS基因调控苹果果实成熟过程的最新研究进展进行了综述,并提出了ACS基因调控苹果果实成熟和乙烯合成的分子模型,同时也对本领域今后的研究方向作了展望。

关键词: 苹果, 果实成熟, 乙烯, 贮藏性, ACC 合成酶

Abstract: The postharvest economic quality of mature apple(Malus? × domestica Borkh.)is determined by the fruit shelf-life,which is associated with the fruit softening rate at room temperature. Ethylene is the factor that has been most studied in relation to the regulation of fruit softening. ACS(1-aminocyclopropane-1-carboxylate synthase)is one of the key enzymes in ethylene biosynthesis and pathway. Twenty ACS genes have been found by retrieving apple genome,two of which,MdACS1 and MdACS3,have been studied extensively due to their specific expression in fruit tissue. Recent characterization of these genes has provided insight into the molecular basis of ACS gene involvement in fruit ripening. This paper reviews the advances in our understanding of the role of ACS gene in apple fruit ripening and a model by which ACS regulating fruit ripening and ethylene production is proposed. In addition,we prospectively overview promising research avenues that could lead to further clarification of the regulatory events involved in ripening.

Key words: apple, fruit ripening, ethylene, shelf life, ACS

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