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Identification of xyloglucan endotransglucosylase/hydrolase genes (XTHs) and their expression in persimmon fruit as influenced by 1-methylcyclopropene and gibberellic acid during storage at ambient temperature

文献类型： 外文期刊

作者： Zhu, Qinggang 1 ; Zhang, Zhengke 1 ; Rao, Jingping 1 ; Huber, Donald J. 3 ; Lv, Jingyi 1 ; Hou, Yali 1 ; Song, Kanghua 1 ;

作者机构： 1.NW A&F Univ, Coll Hort, Yangling 712100, Shaanxi, Peoples R China

2.Chinese Acad Trop Agr Sci, Enviroment & Plant Protect Inst, Haikou 571101, Peoples R China

3.Univ Florida, IFAS, Dept Hort Sci, Gainesville, FL 32611 USA

关键词： Persimmon;Softening;Xyloglucan endotransglucosylase/hydrolase;XTH;Gibberellic acid

期刊名称：FOOD CHEMISTRY （ 影响因子：7.514； 五年影响因子：7.516 ）

ISSN： 0308-8146

年卷期： 2013 年 138 卷 1 期

页码：

收录情况： SCI

摘要： Xyloglucan endotransglucosylase/hydrolase (XTH) is thought to contribute to fruit softening by degrading xyloglucan that is a predominant hemicellulose in the cell wall. In this study, two full-length XTH genes (DKXTH1 and DKXTH2) were identified from 'Fupingjianshi' persimmon fruit, and the expression level of both XTH genes was investigated during softening for 18-24 d using RT-qPCR. Sequence analysis showed that DKXTH1 and DKXTH2 contained a putative open reading frame of 861 and 876 bp encoding polypeptides of 287 and 292 amino acid residues, respectively, which contained the conserved DEI-DFEFLG motif of XTH, a potential N-linked glycosylation signal site. RT-qPCR analysis showed that DKXTH1 and DKXTH2 in untreated fruit had different expression patterns during fruit softening, in which maximum expression occurred on days 3 and 12 of ripening, respectively. 1-Methylcyclopropene (1-MCP) and gibberellic acid (GA(3)) treatments delayed the softening and ethylene peak of persimmon fruit, as well as suppressed the expression of both XTH genes, especially DKXTH1. These results indicated that the expression of both XTH genes might be ethylene dependent action, and closely related to softening of persimmon in the early (DKXTH1) and later (DKXTH2) ripening stages. (C) 2012 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Expression of Expansin Gene (CDK-Exp3) and Its Modulation by Exogenous Gibberellic Acid During Ripening and Softening of Persimmon Fruit. Zhang, Zhengke,Fu, Runshan,Rao, Jingping,Chang, Xiaoxiao,Zhang, Yu,Jiang, Nina,Zhang, Zhengke,Hu, Meijiao,Huber, Donald J.. 2012

[2]Genome-wide transcriptome analysis of Chinese pollination-constant nonastringent persimmon fruit treated with ethanol. Luo, Chun,Zhang, Qinglin,Luo, Zhengrong,Luo, Chun. 2014

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