Phylogenetic Relationships of the Fern Cyrtomium falcatum (Dryopteridaceae) from Dokdo Island Based on Chloroplast Genome Sequencing.
Phylogenetic Relationships of the Fern Cyrtomium falcatum (Dryopteridaceae) from Dokdo Island Based on Chloroplast Genome Sequencing.
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DOI：
10.3390/genes7120115
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发表时间：
2016-12-02
期刊：
影响因子：
3.5
通讯作者：
Park S
中科院分区：
文献类型：
--
作者：
Raman G;Choi KS;Park S
镰状贯众是一种广受欢迎的观赏蕨类植物。原产于朝鲜半岛、日本和日本海的独岛，是独岛上唯一的蕨类植物。我们分离并鉴定了C. falcatum，并与近缘种进行了比较。trnV-GAC和trnV-GAU基因存在于C. falcatum，而trnP-GGG和rp 121缺乏。此外，贯众和铁线蕨的cp基因组缺乏trnP-GGG和rpl 21，这表明这些在被子植物cp基因组中不保守。在C. falcatum和其它真足蕨类表明这些基因仅限于树蕨、非核心细孢子囊蕨和基生蕨类。梭falcatum cp基因组还编码ndhF和rps 7，其起始密码子GUG仅在多足蕨类中保守，并且与其它蕨类共有两个显著倒位，包括trnD-GUC区域的轻微倒位和trnG-trnT区域的约3 kb倒位。系统发育分析表明，木贼属与裸盖蕨目-瓶舌蕨目是一个姐妹分支，其自展法（BS）值为100%。100%BS也强烈支持蕨科与真多足类的姐妹关系，但贝叶斯分子钟分析表明，C。falcatum在古近纪中期（4515 ± 493万年前）发生了多样化，可能从欧亚大陆迁移到独岛。
Cyrtomium falcatum is a popular ornamental fern cultivated worldwide. Native to the Korean Peninsula, Japan, and Dokdo Island in the Sea of Japan, it is the only fern present on Dokdo Island. We isolated and characterized the chloroplast (cp) genome of C. falcatum, and compared it with those of closely related species. The genes trnV-GAC and trnV-GAU were found to be present within the cp genome of C. falcatum, whereas trnP-GGG and rpl21 were lacking. Moreover, cp genomes of Cyrtomium devexiscapulae and Adiantum capillus-veneris lack trnP-GGG and rpl21, suggesting these are not conserved among angiosperm cp genomes. The deletion of trnR-UCG, trnR-CCG, and trnSeC in the cp genomes of C. falcatum and other eupolypod ferns indicates these genes are restricted to tree ferns, non-core leptosporangiates, and basal ferns. The C. falcatum cp genome also encoded ndhF and rps7, with GUG start codons that were only conserved in polypod ferns, and it shares two significant inversions with other ferns, including a minor inversion of the trnD-GUC region and an approximate 3 kb inversion of the trnG-trnT region. Phylogenetic analyses showed that Equisetum was found to be a sister clade to Psilotales-Ophioglossales with a 100% bootstrap (BS) value. The sister relationship between Pteridaceae and eupolypods was also strongly supported by a 100% BS, but Bayesian molecular clock analyses suggested that C. falcatum diversified in the mid-Paleogene period (45.15 ± 4.93 million years ago) and might have moved from Eurasia to Dokdo Island.
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影响因子：
3.8
作者：
Kim HT;Chung MG;Kim KJ
通讯作者：
Kim KJ
影响因子：
2.5
作者：
Lohse, Marc;Drechsel, Oliver;Bock, Ralph
通讯作者：
Bock, Ralph
海金沙和马西藻的质体序列揭示了从基底蕨类植物到核心细孢子囊藻的基因组组织转变
影响因子：
3.3
作者：
Gao L;Wang B;Wang ZW;Zhou Y;Su YJ;Wang T
通讯作者：
Wang T
DOI：
10.1073/pnas.84.16.5818
发表时间：
1987-08-01
影响因子：
11.1
作者：
JANSEN, RK;PALMER, JD
通讯作者：
PALMER, JD
影响因子：
10.7
作者：
Katoh K;Standley DM
通讯作者：
Standley DM