Can Rumex madaio (Polygonaceae) be threatened by natural hybridization with an invasive species in Japan?
Can Rumex madaio (Polygonaceae) be threatened by natural hybridization with an invasive species in Japan?
复制标题
在日本，酸模（蓼科）会受到与入侵物种自然杂交的威胁吗？
DOI：
10.1111/njb.03543
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发表时间：
2022
影响因子：
0.9
通讯作者：
Maki Masayuki
中科院分区：
文献类型：
--
作者：
Uemura Ryudo;Asakawa Akira;Fujii Shinji;Matsuo Ayumi;Suyama Yoshihisa;Maki Masayuki
日本特有的本土物种 Rumex madaio 与同属入侵物种 R. 之间的自然杂交。 obtusifolius，经常与 R. 同时出现。 madaio，通过分子鉴定进行了检查。在低频率下，使用核糖体 DNA 内部转录间隔区的限制性片段长度多态性分析证实了两个物种之间的种间杂种。虽然这两个物种可以杂交，因为它们的花期有一定程度的重叠，但R.的繁殖力极低。由未知遗传因素引起的马达奥似乎阻止了这些物种之间的广泛杂交。基于单核苷酸多态性的群体遗传分析表明，R具有独特的群体遗传结构。 madaio建议，应该对当地种群进行单独对待，以保护该物种的遗传。
Natural hybridization between the native speciesRumex madaioendemic to Japan and the congeneric invasive speciesR. obtusifolius, which frequently co‐occurs withR. madaio, was examined by molecular identification. At low frequencies, interspecific hybrids between the two species were confirmed using restriction fragment length polymorphism analyses of the internal transcribed spacer region of ribosomal DNA. Whereas these two species can hybridize because their flowering periods overlapped to some extent, the extremely low fertility ofR. madaiocaused by unknown genetic factors seemed to prevent extensive hybridization between these species. Population genetic analyses based on single nucleotide polymorphisms showed that there was a distinct population genetic structure inR. madaio, suggesting that local populations should be treated separately for genetic conservation of the species.