Genome Size Diversity and Its Impact on the Evolution of Land Plants.

Genome Size Diversity and Its Impact on the Evolution of Land Plants.
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DOI:
10.3390/genes9020088
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发表时间:
2018-02-14
期刊:
影响因子:
3.5
通讯作者:
Leitch IJ
Leitch IJ
中科院分区:
生物学3区
文献类型:
--
作者:
Pellicer J;Hidalgo O;Dodsworth S;Leitch IJ

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基因组大小是一种生物多样性特征,在真核生物中表现出惊人的多样性,差异超过 64,000 倍。在所有主要分类群中,陆地植物因其惊人的基因组大小多样性而脱颖而出,范围约为。 2400倍。随着我们对陆地植物这种显着的基因组大小多样性的影响和重要性的认识不断加深,越来越明显的是,这种性状不仅在塑造植物基因组的进化方面发挥着重要作用,而且在影响生态系统水平上的植物群落组合方面也发挥着重要作用。新型测序技术以及分析工具的最新进展和改进使得人们有可能获得对支撑基因组大小变化的基因组和表观遗传机制的重要见解。在这篇综述中,我们概述了我们目前对不同陆地植物类群基因组大小多样性的理解、其对基因组生物学的影响以及需要解决哪些未来方向来填补关键知识空白。
Genome size is a biodiversity trait that shows staggering diversity across eukaryotes, varying over 64,000-fold. Of all major taxonomic groups, land plants stand out due to their staggering genome size diversity, ranging ca. 2400-fold. As our understanding of the implications and significance of this remarkable genome size diversity in land plants grows, it is becoming increasingly evident that this trait plays not only an important role in shaping the evolution of plant genomes, but also in influencing plant community assemblages at the ecosystem level. Recent advances and improvements in novel sequencing technologies, as well as analytical tools, make it possible to gain critical insights into the genomic and epigenetic mechanisms underpinning genome size changes. In this review we provide an overview of our current understanding of genome size diversity across the different land plant groups, its implications on the biology of the genome and what future directions need to be addressed to fill key knowledge gaps.
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