Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F-1 hybrid variation

doi:10.1186/s12870-018-1562-4

	Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F-1 hybrid variation
	Liu, Jing ; Li, Chao-Qun ; Dong, Yang; Yang, Xia ; Wang, Yin-Zheng
	2018
发表期刊	BMC PLANT BIOLOGY
ISSN	1471-2229
卷号	18
摘要	BackgroundGreat advances have been achieved in our understanding of flower development and evolution since the establishment of the ABC model. However, it remains a challenge to define the exact context of organ identity in the component interactions of the ABC model.ResultsThrough hybridization, we detected a homeotic mutant in Petrocosmea (Gesneriaceae) uniquely displayed by the petaloid-stamen' in the third whorl with petal identity. Comparative Real-time PCR analyses demonstrate that both two B-class genes DEF2 and GLO are excessively expressed while the transcripts of the C-class gene PLE are reduced in the third floral whorl in the mutant compared to that in the wild-type F-1 hybrids. Further allele-specific expression (ASE) analyses indicate that an allele-specific change in PgPLE might be responsible for up-regulation of both B-class genes and down-regulation of the C-class gene in the petaloid-stamen mutants.ConclusionsOur findings suggest that the petaloid-stamen is consequent upon an evident dosage imbalance between B- and C-class products that is probably triggered by a cis-regulatory change. In addition, the genetic pathway for the floral organ identity might be in parallel with that for the floral symmetry. The extreme variation in hybrids further suggests that interspecific hybridization may represent a major factor for evolutionary innovation and diversification in plants.
关键词	ASE analyses B-class genes Dosage imbalance Floral symmetry Organ identity Parallel pathways Petaloid-stamen Petrocosmea
学科领域	Plant Sciences
DOI	10.1186/s12870-018-1562-4
收录类别	SCI
语种	英语
WOS关键词	FLORAL HOMEOTIC GENES ; MADS-BOX ; ORGAN IDENTITY ; TRANSGRESSIVE SEGREGATION ; ARABIDOPSIS-THALIANA ; ANTIRRHINUM-MAJUS ; MERISTEM IDENTITY ; DNA-BINDING ; ABC MODEL ; FLOWER
WOS记录号	WOS:000452750200001
出版者	BMC
文献子类	Article
出版地	LONDON
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31170198, 31530003]
作者邮箱	wangyz@ibcas.ac.cn
作品OA属性	gold, Green Published
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/20329
专题	系统与进化植物学国家重点实验室
作者单位	1.[Liu, Jing 2.Li, Chao-Qun 3.Dong, Yang 4.Yang, Xia 5.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, 20 Nanxincun, Beijing 100093, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jing,Li, Chao-Qun,Dong, Yang,et al. Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F-1 hybrid variation[J]. BMC PLANT BIOLOGY,2018,18.
APA	Liu, Jing,Li, Chao-Qun,Dong, Yang,Yang, Xia,&Wang, Yin-Zheng.(2018).Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F-1 hybrid variation.BMC PLANT BIOLOGY,18.
MLA	Liu, Jing,et al."Dosage imbalance of B- and C-class genes causes petaloid-stamen relating to F-1 hybrid variation".BMC PLANT BIOLOGY 18(2018).

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