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Isolation and characterization of a waterlogging-responsive gene involved in ethylene biosynthesis in chrysanthemum

文献类型： 外文期刊

作者： Zhang, Zhiguo 1 ; Luan, Dongtao 1 ; Chen, Gang 2 ; Xiao, Fang 3 ; Yin, Dongmei 1 ; Ni, Dian 1 ; Li, Xiaorong 5 ; Qi, Liho 1 ;

作者机构： 1.Shanghai Inst Technol, Coll Ecol, Shanghai 201418, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Vegetable Crops, Jiangsu Key Lab Hort Crop Genet Improvement, Nanjing 210014, Jiangsu, Peoples R China

3.Inner Mongolia Meteorol Bur, Res Ctr Ecol & Agr Meteorol, Hohhot 010051, Inner Mongolia, Peoples R China

4.Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA

5.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China

关键词： Waterlogging; Chrysanthemum; CgACO; Ethylene; Gene expression

期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）

ISSN： 0137-5881

年卷期： 2018 年 40 卷 6 期

页码：

收录情况： SCI

摘要： Soil waterlogging significantly affects natural vegetation and agricultural crops. It limits the growth of many plants, in particular those in moist areas. The phytohormone ethylene participates in a variety of signaling processes during abiotic stress responses. To gain a better understanding of the role of ethylene in waterlogging responses, we isolated the full-length cDNA of 1-aminocyclopropane-1-carboxylate oxidase (CgACO) from chrysanthemum. We measured the expression levels of this gene in two Chrysanthemum species, Chrysanthemum zawadskii and C. nankingense, which differ in waterlogging tolerance. In roots of the sensitive species (C. nankingense), CgACO expression increased rapidly and reached its maximum at 12 h after treatment before decreasing. In contrast, in roots of the waterlogging-tolerant species (C. zawadskii), the expression of CgACO increased rapidly to a maximum at 12 h after treatment and maintained a high level up to 24 h after treatment. Higher CgACO expression possibly contributed to higher accumulation of ethylene in the waterlogging-tolerant species C. zawadskii. Taken together, our results support a previous observation reporting that C. zawadskii has a well-developed aerenchyma to adapt to waterlogging.

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