Confirmation of clonal reproduction of Fagus crenata Blume from Sado Island, Niigata Prefecture
Confirmation of clonal reproduction of Fagus crenata Blume from Sado Island, Niigata Prefecture
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新泻县佐渡岛水青冈克隆繁殖的确认
DOI：
10.1111/1442-1984.12336
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发表时间：
2021
影响因子：
1.4
通讯作者：
Kitamura Keiko
中科院分区：
文献类型：
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作者：
Worth James R. P.;Mori Hideki;Kitamura Keiko
虽然克隆生长在东亚的水青冈亚属Engleriana和北美的水青冈（水青冈亚属）是重要的，但对于其他水青冈亚属物种，绝大多数的再生涉及有性生殖，很少观察到克隆生长。在这里，我们的目的是确认是否克隆生长发生在日本特有种毛茛（山毛榉亚属）的核微卫星标记，通过调查发现的多茎丛的起源在高海拔的矮山毛榉林新泻县佐渡岛。我们发现，从三个单独的丛中收集的所有茎都属于相同的丛特异性多位点基因型。无性系的最大直径为3-4 m，与主要无性再生的日本种Fagusjaponica（英语：FagusEngleriana）的直径相当。物种的克隆生长能力可能是其在其生态范围极限的高海拔暴露地点持续存在的能力的基础。
While clonal growth is important in the East AsianFagussubgenusEnglerianaand the North AmericanFagus grandifolia(subgenusFagus), for other subgenusFagusspecies the vast majority of regeneration involves sexual reproduction with clonal growth only rarely observed. Here we aim to confirm using nuclear microsatellite markers whether clonal growth occurs in the Japanese endemic speciesFagus crenata(subgenusFagus) by investigating the origin of multi‐stemmed clumps found within a high‐elevation dwarf beech forest on Sado Island, Niigata Prefecture. We found that all stems collected from three separate clumps belonged to the same clump‐specific multi‐locus genotypes. The maximum size of clones was 3–4 m in diameter, comparable in size to those seen in the predominantly asexually regenerating Japanese speciesFagus japonica(subgenusEngleriana). The species capacity for clonal growth is likely to underlie its ability to persist at high‐elevation exposed sites at the limits of its ecological range.