Complete plastome sequences of Equisetum arvense and Isoetes flaccida: implications for phylogeny and plastid genome evolution of early land plant lineages.
Complete plastome sequences of Equisetum arvense and Isoetes flaccida: implications for phylogeny and plastid genome evolution of early land plant lineages.
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DOI：
10.1186/1471-2148-10-321
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发表时间：
2010-10-23
影响因子：
3.4
通讯作者：
Wolf PG
中科院分区：
文献类型：
--
作者：
Karol KG;Arumuganathan K;Boore JL;Duffy AM;Everett KD;Hall JD;Hansen SK;Kuehl JV;Mandoli DF;Mishler BD;Olmstead RG;Renzaglia KS;Wolf PG
尽管我们对陆地植物的进化有了相当大的了解，但绿色生命之树上的几个节点仍然没有得到很好的解决。此外，大部分目前可用的数据来自主要的陆地植物分支的一个子集。在这里，我们研究早期陆地植物进化使用完整的质体序列，包括两个以前未经审查和遗传学的关键谱系。为了更好地了解陆地植物及其质体的进化，我们检查了对齐的核苷酸序列，插入缺失，基因和核苷酸组成，倒位，以及反向重复序列边界处的基因顺序。我们目前的质体序列的问荆，马尾，和Isopropylflaccida，异孢子石松。来自43个分类群的49个质体基因的比对核苷酸的系统发育分析支持以下分支的单系性：胚胎植物（陆地植物），石松植物，念珠藻（leposporangiate蕨类植物+观音座莲+裸盖蕨+问荆），和种子植物。四个念珠藻谱系之间的分辨率仍然适中，虽然核苷酸分析表明，裸藻和E。arvense形成A. evecta + leptosporangiate蕨类。核苷酸系统发育分析的结果与质体基因重排的分布和插入和缺失（indels）导致的序列缺口分析一致。我们发现了一个新的插入缺失和一个将念珠藻结合在一起的基因块的倒位。单系性的念珠藻一直有争议的基础上形态和化石证据。在陆地植物数据的广泛采样的背景下，我们发现了几个新的证据，念珠藻单系性。从这项研究的结果表明，分辨率之间的四个念珠藻谱系，虽然有适度的支持，我们将一个分支组成的木贼科和裸盖蕨科，是姐妹的“真正的蕨类植物”，包括Marattiaceae。
Despite considerable progress in our understanding of land plant phylogeny, several nodes in the green tree of life remain poorly resolved. Furthermore, the bulk of currently available data come from only a subset of major land plant clades. Here we examine early land plant evolution using complete plastome sequences including two previously unexamined and phylogenetically critical lineages. To better understand the evolution of land plants and their plastomes, we examined aligned nucleotide sequences, indels, gene and nucleotide composition, inversions, and gene order at the boundaries of the inverted repeats. We present the plastome sequences of Equisetum arvense, a horsetail, and of Isoetes flaccida, a heterosporous lycophyte. Phylogenetic analysis of aligned nucleotides from 49 plastome genes from 43 taxa supported monophyly for the following clades: embryophytes (land plants), lycophytes, monilophytes (leptosporangiate ferns + Angiopteris evecta + Psilotum nudum + Equisetum arvense), and seed plants. Resolution among the four monilophyte lineages remained moderate, although nucleotide analyses suggested that P. nudum and E. arvense form a clade sister to A. evecta + leptosporangiate ferns. Results from phylogenetic analyses of nucleotides were consistent with the distribution of plastome gene rearrangements and with analysis of sequence gaps resulting from insertions and deletions (indels). We found one new indel and an inversion of a block of genes that unites the monilophytes. Monophyly of monilophytes has been disputed on the basis of morphological and fossil evidence. In the context of a broad sampling of land plant data we find several new pieces of evidence for monilophyte monophyly. Results from this study demonstrate resolution among the four monilophytes lineages, albeit with moderate support; we posit a clade consisting of Equisetaceae and Psilotaceae that is sister to the "true ferns," including Marattiaceae.
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影响因子：
3.4
作者：
Cai Z;Penaflor C;Kuehl JV;Leebens-Mack J;Carlson JE;dePamphilis CW;Boore JL;Jansen RK
通讯作者：
Jansen RK
影响因子：
5.3
作者：
Hirao T;Watanabe A;Kurita M;Kondo T;Takata K
通讯作者：
Takata K
DOI：
10.1007/bf02497656
发表时间：
1992-09-01
期刊：
BOTANICAL MAGAZINE-TOKYO
影响因子：
--
作者：
HASEBE, M;IWATSUKI, K
通讯作者：
IWATSUKI, K
影响因子：
14.9
作者：
Kugita, M;Kaneko, A;Yoshinaga, K
通讯作者：
Yoshinaga, K
影响因子：
10.7
作者：
Goremykin, VV;Holland, B;Hellwig, FH
通讯作者：
Hellwig, FH