نتایج جستجو برای: gymnosperms

تعداد نتایج: 875  

2017
Amanda R. De La Torre Zhen Li Yves Van de Peer Pär K. Ingvarsson

The majority of variation in rates of molecular evolution among seed plants remains both unexplored and unexplained. Although some attention has been given to flowering plants, reports of molecular evolutionary rates for their sister plant clade (gymnosperms) are scarce, and to our knowledge differences in molecular evolution among seed plant clades have never been tested in a phylogenetic fram...

Journal: :Botanical Gazette 1908

2017
Fei Chen Xingtan Zhang Xing Liu Liangsheng Zhang

MIKCc-type MADS-box genes encode transcription factors that control floral organ morphogenesis and flowering time in flowering plants. Here, in order to determine when the subfamilies of MIKCc originated and their early evolutionary trajectory, we sampled and analyzed the genomes and large-scale transcriptomes representing all the orders of gymnosperms and basal angiosperms. Through phylogeneti...

2015
Zheng Li Anthony E Baniaga Emily B Sessa Moira Scascitelli Sean W Graham Loren H Rieseberg Michael S Barker

Polyploidy is a common mode of speciation and evolution in angiosperms (flowering plants). In contrast, there is little evidence to date that whole genome duplication (WGD) has played a significant role in the evolution of their putative extant sister lineage, the gymnosperms. Recent analyses of the spruce genome, the first published conifer genome, failed to detect evidence of WGDs in gene age...

2014
Ying Lu Jin-Hua Ran Dong-Mei Guo Zu-Yu Yang Xiao-Quan Wang

Phylogenetic reconstruction is fundamental to study evolutionary biology and historical biogeography. However, there was not a molecular phylogeny of gymnosperms represented by extensive sampling at the genus level, and most published phylogenies of this group were constructed based on cytoplasmic DNA markers and/or the multi-copy nuclear ribosomal DNA. In this study, we use LFY and NLY, two si...

Journal: :Molecular phylogenetics and evolution 2014
Xiao-Quan Wang Jin-Hua Ran

Living gymnosperms comprise only a little more than 1000 species, but represent four of the five main lineages of seed plants, including cycads, ginkgos, gnetophytes and conifers. This group has huge ecological and economic value, and has drawn great interest from the scientific community. Here we review recent advances in our understanding of gymnosperm evolution and biogeography, including ph...

Journal: :Silvae Genetica 2019

Journal: :Scientific Reports 2018

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