The chromosome-level genome of Gypsophila paniculata reveals the molecular mechanism of floral development and ethylene insensitivity
文献类型： 外文期刊
作者： Li, Fan 1 ; Gao, Yuan 3 ; Jin, Chunlian 1 ; Wen, Xiaohui 2 ; Geng, Huaiting 1 ; Cheng, Ying 1 ; Qu, Haoyue 5 ; Liu, Xing 5 ; Feng, Shan 6 ; Zhang, Fan 6 ; Ruan, Jiwei 1 ; Yang, Chunmei 1 ; Zhang, Liangsheng 2 ; Wang, Jihua 1 ;
作者机构： 1.Yunnan Acad Agr Sci, Natl Engn Res Ctr Ornamental Hort, Floriculture Res Inst, Key Lab Flower Breeding Yunnan Prov, Kunming 650200, Yunnan, Peoples R China
2.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310030, Peoples R China
3.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Minist Agr & Rural Affairs,Genom Anal Lab, Shenzhen Branch,Guangdong Lab Lingnan Modern Agr, Shenzhen 518120, Peoples R China
4.Yunnan Univ, Sch Agr, Kunming 650504, Yunnan, Peoples R China
5.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Fuzhou 350002, Peoples R China
6.Huazhong Agr Univ, Coll Hort & Forestry Sci, Key Lab Hort Plant Biol, Minist Educ, Wuhan 430070, Hubei, Peoples R China
7.Huazhong Agr Univ, Coll Hort & Forestry Sci, Natl R&D Ctr Citrus Postharvest Technol, Wuhan 430070, Hubei, Peoples R China
8.Hubei Hongshan Lab, Wuhan 430070, Peoples R China
期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）
ISSN： 2662-6810
年卷期： 2022 年 9 卷
页码：
收录情况： SCI
摘要： Gypsophila paniculata, belonging to the Caryophyllaceae of the Caryophyllales, is one of the most famous worldwide cut flowers. It is commonly used as dried f lowers, whereas the underlying mechanism of flower senescence has not yet been addressed. Here, we present a chromosome-scale genome assembly for G. paniculata with a total size of 749.58 Mb. Whole-genome duplication signatures unveil two major duplication events in its evolutionary history: an ancient one occurring before the divergence of Caryophyllaceae and a more recent one shared with Dianthus caryophyllus. The integrative analyses combining genomic and transcriptomic data reveal the mechanisms regulating f loral development and ethylene response of G. paniculata. The reduction of AGAMOUS expression probably caused by sequence polymorphism and the mutation in miR172 binding site of PETALOSA are associated with the double flower formation in G. paniculata. The low expression of ETHYLENE RESPONSE SENSOR (ERS) and the reduction of downstream ETHYLENE RESPONSE FACTOR (ERF) gene copy number collectively lead to the ethylene insensitivity of G. paniculata, affecting f lower senescence and making it capable of making dried f lowers. This study provides a cornerstone for understanding the underlying principles governing f loral development and flower senescence, which could accelerate the molecular breeding of the Caryophyllaceae species.
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