气候变化领域集成服务门户(CCPortal): Polyploidy: its consequences and enabling role in plant diversification and evolution

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DOI	10.1093/aob/mcac132
	Polyploidy: its consequences and enabling role in plant diversification and evolution
	Heslop-Harrison, J. S. (Pat); Schwarzacher, Trude; Liu, Qing
发表日期	2023
ISSN	0305-7364
EISSN	1095-8290
起始页码	1
结束页码	10
卷号	131 期号:1
英文摘要	Background Most, if not all, green plant (Virdiplantae) species including angiosperms and ferns are polyploids themselves or have ancient polyploid or whole genome duplication signatures in their genomes. Polyploids are not only restricted to our major crop species such as wheat, maize, potato and the brassicas, but also occur frequently in wild species and natural habitats. Polyploidy has thus been viewed as a major driver in evolution, and its influence on genome and chromosome evolution has been at the centre of many investigations. Mechanistic models of the newly structured genomes are being developed that incorporate aspects of sequence evolution or turnover (low-copy genes and regulatory sequences, as well as repetitive DNAs), modification of gene functions, the re-establishment of control of genes with multiple copies, and often meiotic chromosome pairing, recombination and restoration of fertility. Scope World-wide interest in how green plants have evolved under different conditions - whether in small, isolated populations, or globally - suggests that gaining further insight into the contribution of polyploidy to plant speciation and adaptation to environmental changes is greatly needed. Forward-looking research and modelling, based on cytogenetics, expression studies, and genomics or genome sequencing analyses, discussed in this Special Issue of the Annals of Botany, consider how new polyploids behave and the pathways available for genome evolution. They address fundamental questions about the advantages and disadvantages of polyploidy, the consequences for evolution and speciation, and applied questions regarding the spread of polyploids in the environment and challenges in breeding and exploitation of wild relatives through introgression or resynthesis of polyploids. Conclusion Chromosome number, genome size, repetitive DNA sequences, genes and regulatory sequences and their expression evolve following polyploidy - generating diversity and possible novel traits and enabling species diversification. There is the potential for ever more polyploids in natural, managed and disturbed environments under changing climates and new stresses.
英文关键词	Polyploidy; whole genome duplications; structural variation; genome size; chromosome number; DNA and RNA sequencing; fluorescence in situ hybridization; flow cytometry; repetitive DNA; meiosis; ecology; speciation
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000932402200001
来源期刊	ANNALS OF BOTANY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281477
作者单位	Chinese Academy of Sciences; South China Botanical Garden, CAS; University of Leicester; Chinese Academy of Sciences; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Heslop-Harrison, J. S. ,Schwarzacher, Trude,Liu, Qing. Polyploidy: its consequences and enabling role in plant diversification and evolution[J],2023,131(1).
APA	Heslop-Harrison, J. S. ,Schwarzacher, Trude,&Liu, Qing.(2023).Polyploidy: its consequences and enabling role in plant diversification and evolution.ANNALS OF BOTANY,131(1).
MLA	Heslop-Harrison, J. S. ,et al."Polyploidy: its consequences and enabling role in plant diversification and evolution".ANNALS OF BOTANY 131.1(2023).