文献类型： 外文期刊
作者： Niu, Juan 1 ; Shi, Yingying 2 ; Gao, Zexin 2 ; Sun, Zhimin 2 ; Tian, Shuang 1 ; Chen, Xiaorong 3 ; Luan, Mingbao 2 ;
作者机构： 1.Jingdezhen Univ, Jingdezhen 333032, Peoples R China
2.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Key Lab Stem Fiber Biomass & Engn Microbiol, Minist Agr, Changsha 410205, Peoples R China
3.Yichun Inst Sci, Yichun 336028, Peoples R China
4.Chinese Acad Agr Sci, Natl Nanfan Res Inst Sanya, Sanya 572000, Peoples R China
关键词： Akebia trifoliata; Fruit cracking; AtrBGAL2
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：7.7； 五年影响因子：7.7 ）
ISSN： 0141-8130
年卷期： 2024 年 275 卷
页码：
收录情况： SCI
摘要： Cracking of Akebia trifoliata fruit at maturity is problematic for the cultivation of the horticultural crop, shortening shelf-life quality and compromising commercial value. However, the molecular mechanisms underlying this feature of A. trifoliata are not known. Genes involved in cell wall metabolism were identified by genome and transcriptome sequencing, which may play important roles in fruit cracking. One of the galactose metabolism related genes, beta-galactosidase ( AtrBGAL2 ), was identified in A. trifoliata , and overexpression (OE) of AtrBGAL2 resulted in early fruit cracking, higher water-soluble pectin contents, and lower acid-soluble pectin, cellulose, and hemicellulose content compared to the wild type. Whereas silencing of AtrBGAL2 in trifoliata by virus induced gene silencing showed opposite trends. The levels of AtrBGAL2 transcripts were 24.6 and 66.0-fold higher in OE A. trifoliata and tomato fruits, respectively, and the cell wall-related genes were also gradually greater than in control plants during fruit ripening. Whereas the expression levels of AtrBGAL2 was significantly down-regulated by 54.1 % and 73.7 % in gene silenced A. trifoliata and CRISPR/Cas9 tomato mutant plants, respectively, and cell wall-related genes were also significantly reduced. These results demonstrate that AtrBGAL2 plays important roles in regulating fruit cracking during fruit ripening.
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