Molecular evidence for natural hybridization between wild loquat (Eriobotrya japonica) and its relative E. prinoides.
Molecular evidence for natural hybridization between wild loquat (Eriobotrya japonica) and its relative E. prinoides.
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野生枇杷（Eriobotrya japonica）与其近缘枇杷自然杂交的分子证据
DOI：
10.1186/s12870-014-0275-6
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发表时间：
2014-10-10
影响因子：
5.3
通讯作者：
Liao W
中科院分区：
文献类型：
--
作者：
Fan Q;Chen S;Li M;Guo W;Jing H;Wu W;Zhou R;Liao W
背景：种间杂交一直被认为是植物进化和物种形成的关键过程。它在Pyrinae亚部落的属中相当普遍。在梨科的一个小乔木属Eriobotrya中，E. prinoides var. daduheensis要么被认为是E. prinoides的变种，要么是E. prinoides与E. japonica的自然杂交，要么是E. japonica的变种。然而，到目前为止，还没有令人信服的证据证明它的地位。结果：对3个枇杷属植物群的89个个体进行了4个核基因和2个叶绿体区测序。在粳稻和拟南芥的细胞核和叶绿体位点上都发现了一些固定的核苷酸替换或间隙。在35个大河蟹种个体中，33个个体至少在一个核基因上与粳稻和大河蟹具有核苷酸可加性，10个个体在4个核基因上均具有核苷酸可加性。大河豚变种的大部分单倍型与粳稻和河豚变种的单倍型相同。在两个叶绿体区域中，分别有28个和7个个体与粳稻和花楸相同。结论：本研究为大河狸拟南蛙的杂交地位提供了有力证据。大多数杂交个体都是后代杂交。粳稻和稻花均可作为母本。差异适应可能在杂交和潜在的基因渗入中维持了稻稻和粳稻的种界。
Background:Interspecific hybridization has long been recognized as a pivotal process in plant evolution and speciation. It occurs fairly common in the genera of the subtribe Pyrinae. In Eriobotrya, a small tree genus of Pyrinae, E. prinoides var. daduheensis has been recognized as either a variety of E. prinoides, a natural hybrid between E. prinoides and E. japonica, or a variety of E. japonica. However, to date, there has been no convincing evidence on its status.Results:Four nuclear genes and two chloroplast regions were sequenced in 89 individuals of these three Eriobotrya taxa from two locations where they coexist. A few fixed nucleotide substitutions or gaps were found in each of the investigated nuclear and chloroplast loci between E. japonica and E. prinoides. Of the 35 individuals of E. prinoides var. daduheensis, 33 showed nucleotide additivity of E. japonica and E. prinoides in at least one nuclear gene, and 10 of them harboured nucleotide additivity at all the four nuclear genes. Most haplotypes of E. prinoides var. daduheensis were also shared with those of E. japonica and E. prinoides. In the two chloroplast regions, 28 and 7 individuals were identical with E. japonica and E. prinoides, respectively.Conclusions:Our study provides compelling evidence for a hybrid status for E. prinoides var. daduheensis. Most hybrid individuals are later-generation hybrids. Both E. japonica and E. prinoides can serve as female parent. Differential adaptation might maintain the species boundary of E. prinoides and E. japonica in the face of hybridization and potential introgression.
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影响因子：
4.2
作者：
Fang, Qiang;Chen, Ying-Zhuo;Huang, Shuang-Quan
通讯作者：
Huang, Shuang-Quan
枫香和Altingia之间自然属间杂交的分子证据
影响因子：
2.8
作者：
Wu, Wei;Zhou, Renchao;Shi, Suhua
通讯作者：
Shi, Suhua
影响因子：
4.2
作者：
Zha, Hong-Guang;Milne, Richard I.;Sun, Hang
通讯作者：
Sun, Hang
影响因子：
4.9
作者：
Robertson, Ashley;Rich, Timothy C. G.;Hiscock, Simon J.
通讯作者：
Hiscock, Simon J.
DOI：
10.1007/bf02815379
发表时间：
1996-01-01
期刊：
FOLIA GEOBOTANICA & PHYTOTAXONOMICA
影响因子：
--
作者：
Campbell, CS;Wright, WA
通讯作者：
Wright, WA