Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat

doi:10.1111/nph.15650

	Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat
	Mower, Jeffrey P.1,2; Ma, Peng-Fei 1,3; Grewe, Felix 4; Taylor, Alex 5; Michael, Todd P.6; VanBuren, Robert 7; Qiu, Yin-Long 5
通讯作者	Mower, Jeffrey P.(jpmower@unl.edu)
	2019-04-01
发表期刊	NEW PHYTOLOGIST
ISSN	0028-646X
卷号	222 期号:2 页码:1061-1075
摘要	Lycophytes are a key group for understanding vascular plant evolution. Lycophyte plastomes are highly distinct, indicating a dynamic evolutionary history, but detailed evaluation is hindered by the limited availability of sequences. Eight diverse plastomes were sequenced to assess variation in structure and functional content across lycophytes. Lycopodiaceae plastomes have remained largely unchanged compared with the common ancestor of land plants, whereas plastome evolution in Isoetes and especially Selaginella is highly dynamic. Selaginella plastomes have the highest GC content and fewest genes and introns of any photosynthetic land plant. Uniquely, the canonical inverted repeat was converted into a direct repeat (DR) via large-scale inversion in some Selaginella species. Ancestral reconstruction identified additional putative transitions between an inverted and DR orientation in Selaginella and Isoetes plastomes. A DR orientation does not disrupt the activity of copy-dependent repair to suppress substitution rates within repeats. Lycophyte plastomes include the most archaic examples among vascular plants and the most reconfigured among land plants. These evolutionary trends correlate with the mitochondrial genome, suggesting shared underlying mechanisms. Copy-dependent repair for DR-localized genes indicates that recombination and gene conversion are not inhibited by the DR orientation. Gene relocation in lycophyte plastomes occurs via overlapping inversions rather than transposase/recombinase-mediated processes.
关键词	evolutionary stasis gene loss inversion Isoetes (quillworts) Lycopodiaceae (clubmosses) Lycopodiophyta (lycophytes) plastid genome (plastome) Selaginella (spikemosses)
DOI	10.1111/nph.15650
收录类别	SCI
语种	英语
WOS记录号	WOS:000465446300037
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/66782
专题	中国西南野生生物种质资源库
通讯作者	Mower, Jeffrey P.
作者单位	1.Univ Nebraska, Ctr Plant Sci Innovat, Lincoln, NE 68588 USA 2.Univ Nebraska, Dept Agron & Hort, Lincoln, NE 68583 USA 3.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Yunnan, Peoples R China 4.Field Museum Nat Hist, Grainger Bioinformat Ctr, Sci & Educ, Chicago, IL 60605 USA 5.Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 USA 6.J Craig Venter Inst, La Jolla, CA 92037 USA 7.Michigan State Univ, Dept Hort, E Lansing, MI 48824 USA
推荐引用方式 GB/T 7714	Mower, Jeffrey P.,Ma, Peng-Fei,Grewe, Felix,et al. Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat[J]. NEW PHYTOLOGIST,2019,222(2):1061-1075.
APA	Mower, Jeffrey P..,Ma, Peng-Fei.,Grewe, Felix.,Taylor, Alex.,Michael, Todd P..,...&Qiu, Yin-Long.(2019).Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat.NEW PHYTOLOGIST,222(2),1061-1075.
MLA	Mower, Jeffrey P.,et al."Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat".NEW PHYTOLOGIST 222.2(2019):1061-1075.

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