Sex and the Catasetinae (Darwin's favourite orchids).

Sex and the Catasetinae (Darwin's favourite orchids).
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性与 Catasetinae(达尔文最喜欢的兰花)

DOI:
10.1016/j.ympev.2015.11.019
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发表时间:
2016
影响因子:
4.1
通讯作者:
G Gerlach
G Gerlach
中科院分区:
生物学1区
文献类型:
--
作者:
Pérez-Escobar Oa;M Gottschling;Wm Whitten;G Salazar ;G Gerlach

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两个性别系统在Catasetinae(兰科)中占主导地位,即雄性先熟(这在其他兰科谱系中也有进化)和环境性别决定(ESD)是兰科中唯一的性状。然而,缺乏一个强大的系统发育框架Catasetinae阻碍了更深入的了解起源和性系统的进化。为了研究Catasetinae中雄性先熟和ESD的起源,我们对77个物种的核和叶绿体位点进行了测序,提供了迄今为止Catasetinae最广泛的数据矩阵,其中所有主要的谱系都有代表。我们使用最大简约法,最大似然法和贝叶斯方法来推断系统发育关系和性系统的进化。无论使用的方法,Catasetinae是单系的分子系统发育,所有已建立的属谱系和它们的关系解决和高度支持。根据比较重建方法,Catasetinae的最后共同祖先被推断为具有两性花(即,缺乏雄性先熟和ESD),雄性先熟起源于核心Catasetinae(Catasetum,Clowcrophe,Cycnoches,Dressleria和Mormodes)。此外,三个独立的收益ESD可靠地推断,与相应的损失的核心Catasetinae内的雄性先熟。因此,先获得雄性先熟似乎是兰花获得ESD的必要前提。我们的研究结果有助于一个全面的进化方案的性系统Catasetinae和更普遍的兰花以及。
Two sexual systems are predominant in Catasetinae (Orchidaceae), namely protandry (which has evolved in other orchid lineages as well) and environmental sex determination (ESD) being a unique trait among Orchidaceae. Yet, the lack of a robust phylogenetic framework for Catasetinae has hampered deeper insights in origin and evolution of sexual systems. To investigate the origins of protandry and ESD in Catasetinae, we sequenced nuclear and chloroplast loci from 77 species, providing the most extensive data matrix of Catasetinae available so far with all major lineages represented. We used Maximum Parsimony, Maximum Likelihood and Bayesian methods to infer phylogenetic relationships and evolution of sexual systems. Irrespectively of the methods used, Catasetinae were monophyletic in molecular phylogenies, with all established generic lineages and their relationships resolved and highly supported. According to comparative reconstruction approaches, the last common ancestor of Catasetinae was inferred as having bisexual flowers (i.e., lacking protandry and ESD as well), and protandry originated once in core Catasetinae (comprisingCatasetum,Clowesia,Cycnoches,DressleriaandMormodes). In addition, three independent gains of ESD are reliably inferred, linked to corresponding loss of protandry within core Catasetinae. Thus, prior gain of protandry appears as the necessary prerequisite for gain of ESD in orchids. Our results contribute to a comprehensive evolutionary scenario for sexual systems in Catasetinae and more generally in orchids as well.
DOI: 10.1371/journal.pone.0061048
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
Balbuena JA;Míguez-Lozano R;Blasco-Costa I
通讯作者: Blasco-Costa I
DOI: 10.15517/lank.v13i3.14425
发表时间: 2014
期刊: Lankesteriana International Journal on Orchidology
影响因子: --
作者:
W. M. Whitten;Kurt M. Neubig;N. Williams
通讯作者: N. Williams
DOI: 10.1086/337412
发表时间: 1983-01-01
期刊: BOTANICAL GAZETTE
影响因子: --
作者:
GREGG, KB
通讯作者: GREGG, KB
DOI: 10.11646/phytotaxa.156.5.1
发表时间: 2014-01-28
期刊: PHYTOTAXA
影响因子: 1.1
作者:
Batista, Joao A. N.;Mota, Ana Carolina M.;Salazar, Gerardo A.
通讯作者: Salazar, Gerardo A.
DOI: 10.1046/j.1365-2435.2000.00413.x
发表时间: 2000-04-01
期刊: FUNCTIONAL ECOLOGY
影响因子: 5.2
作者:
Krupnick, GA;Avila, G;Stephenson, AG
通讯作者: Stephenson, AG