Characterization of 1-aminocyclopropane-1-carboxylic acid synthase (ACS) genes during nectarine fruit development and ripening

文献类型： 外文期刊

第一作者： Zeng, Wenfang

作者： Zeng, Wenfang;Pan, Lei;Liu, Hui;Niu, Liang;Lu, Zhenhua;Cui, Guochao;Wang, Zhiqiang

作者机构：

关键词： Nectarine;Fruit;Ethylene;ACS

期刊名称：TREE GENETICS & GENOMES （ 影响因子：2.297； 五年影响因子：2.547 ）

ISSN： 1614-2942

年卷期： 2015 年 11 卷 2 期

页码：

收录情况： SCI

摘要： 1-Aminocyclopropane-1-carboxylic acid synthases (ACS) are key regulatory enzymes involved in ethylene biosynthesis. In plants, ACS enzymes are encoded by a multigene family. In our study, six Pp-ACS genes were identified in nectarine (Prunus persica var. nectarina) based on the recently released peach genome sequence. To gain a better understanding of the nectarine ACS genes in fruit ethylene biosynthesis networks, ethylene evolution and the accumulation patterns of six Pp-ACS transcripts during fruit development and ripening in nectarine 'CN13' (melting type) and 'CN16' (stony hard type) cultivars were examined. Of the six Pp-ACS cDNAs isolated, two genes (Pp-ACS1 and Pp-ACS4) showed ripening-related increased expression during fruit development and ripening in nectarine 'CN13'. Lack of Pp-ACS1 expression was solely responsible for low levels of ethylene production in nectarine 'CN16'. The expression of Pp-ACS5 decreased during fruit development. The effects of phytohormones (auxin and ethylene) and low temperature (4 degrees C) on the levels of different Pp-ACS mRNAs were investigated. Finally, a model is proposed describing the critical regulation of Pp-ACS genes and their relationships to ethylene biosynthesis during nectarine fruit development and ripening.

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