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A Novel Banana Mutant "RF 1" (Musa spp. ABB, Pisang Awak Subgroup) for Improved Agronomic Traits and Enhanced Cold Tolerance and Disease Resistance

文献类型： 外文期刊

作者： Wang, Xiaoyi 1 ; Wang, Anbang 1 ; Li, Yujia 1 ; Xu, Yi 1 ; Wei, Qing 1 ; Wang, Jiashui 1 ; Lin, Fei 1 ; Gong, Deyong 2 ; Liu 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Haikou Expt Stn, Hainan Banana Hlth Seedling Propagat Engn Res Ctr, Haikou, Hainan, Peoples R China

2.Guizhou Acad Agr Sci, Inst Subtrop Crops, Fruit Tree Res Ctr, Xinyi, Peoples R China

3.Huazhong Agr Univ, Coll Plant Sci & Technol, Biomass & Bioenergy Res Ctr, Wuhan, Peoples R China

关键词： "ReFen 1" mutant; Pisang Awak (ABB); ethyl methanesulfonate (EMS)-mutagenesis; semi-dwarfing; agronomic traits; cold tolerance; sigatoka disease resistance; banana breeding

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： Banana is a major fruit crop grown in tropical and subtropical regions worldwide. Among cultivars, "FenJiao, FJ" (Musa spp. ABB, Pisang Awak subgroup) is a popular variety of bananas, due to its better sugar-acid blend and relatively small fruit shape. However, because the traditional FJ variety grows relatively high in height, it is vulnerable to lodging and unsuitable for harvesting. In this study, we sought desirable banana mutants by carrying out ethyl methanesulfonate (EMS) mutagenesis with the FJ cultivar. After the FJ shoot tips had been treated with 0.8% (v/v) EMS for 4 h, we obtained a stably inherited mutant, here called "ReFen 1" (RF1), and also observed a semi-dwarfing phenotype. Compared with the wild type (FJ), this RF1 mutant featured consistently improved agronomic traits during 5-year field experiments conducted in three distinct locations in China. Notably, the RF1 plants showed significantly enhanced cold tolerance and Sigatoka disease resistance, mainly due to a substantially increased soluble content of sugar and greater starch accumulation along with reduced cellulose deposition. Therefore, this study not only demonstrated how a powerful genetic strategy can be used in fruit crop breeding but also provided insight into the identification of novel genes for agronomic trait improvement in bananas and beyond.

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