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Different responses of banana classical AGP genes and cell wall AGP components to low-temperature between chilling sensitive and tolerant cultivars

文献类型： 外文期刊

作者： Liu, Jing 1 ; Meng, Jian 1 ; Chen, Houbin 1 ; Li, Xiaoquan 2 ; Su, Zuxiang 2 ; Chen, Chengjie 1 ; Ning, Tong 1 ; He, Zhenting 1 ; Dai, Longyu 1 ; Xu, Chunxiang 1 ;

作者机构： 1.South China Agr Univ, Coll Hort, Guangzhou 510642, Peoples R China

2.Guangxi Acad Agr Sci, Inst Biotechnol, Nanning 530007, Peoples R China

关键词： Banana (Musa spp; ); Classical arabinogalactan proteins; Genome-wide identification; Immunofluorescence labeling; Low temperature; Plant cell wall

期刊名称：PLANT CELL REPORTS （ 影响因子：4.964； 五年影响因子：5.004 ）

ISSN： 0721-7714

年卷期： 2022 年 41 卷 8 期

页码：

收录情况： SCI

摘要： Key message Seventeen classical MaAGPs and 9 MbAGPs were identified and analyzed. MaAGP1/2/6/9/16/17, the antigens of JIM13 and LM2 antibodies are likely to be involved in banana chilling tolerance. Classical arabinogalactan proteins (AGPs) belong to glycosylphosphatidylinositol-anchored proteins, which are proved to be involved in signaling and cell wall metabolism upon stresses. However, rare information is available on the roles of classical AGPs in low temperature (LT) tolerance. Cultivation of banana in tropical and subtropical region is seriously threatened by LT stress. In the present study, 17 classical MaAGPs and nine MbAGPs in banana A and B genome were identified and characterized, respectively. Great diversity was present among different classical MaAGP/MbAGP members while five members (AGP3/6/11/13/14) showed 100% identity between these two gene families. We further investigated different responses of classical AGPs to LT between a chilling sensitive (CS) and tolerant (CT) banana cultivars. In addition, different changes in the temporal and spatial distribution of cell wall AGP components under LTs between these two cultivars were compared using immunofluorescence labeling. Seven classical MbAGPs were upregulated by LT(s) in the CT cultivar. Classical MaAGP4/6 was induced by LT(s) in both cultivars while MaAGP1/2/9/16/17 only in the CT cultivar. Moreover, these genes showed significantly higher transcription abundance in the CT cultivar than the CS one under LT(s) except classical MaAGP4. Similar results were observed with the epitopes of JIM13 and LM2 antibodies. The antigens of these antibodies and classical MaAGP1/2/6/9/16/17 might be related to LT tolerance of banana. These results provide additional information about plant classical AGPs and their involvement in LT tolerance, as well as their potential as candidate genes to be targeted when breeding CT banana.

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