Large contribution of clonal reproduction to the distribution of deciduous liana species (Wisteria floribunda) in an old-growth cool temperate forest: evidence from genetic analysis
Large contribution of clonal reproduction to the distribution of deciduous liana species (Wisteria floribunda) in an old-growth cool temperate forest: evidence from genetic analysis
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克隆繁殖对古老冷温带森林中落叶藤本植物（紫藤）分布的巨大贡献：来自遗传分析的证据
DOI：
10.1093/aob/mcx153
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发表时间：
2017
期刊：
影响因子：
4.2
通讯作者：
Masaki Takashi
中科院分区：
文献类型：
--
作者：
Mori Hideki;Ueno Saneyoshi;Matsumoto Asako;Kamijo Takashi;Tsumura Yoshihiko;Masaki Takashi
广泛的无性繁殖是藤本植物更新和定殖成功的一种常见而重要的生活史策略。然而，很少有研究评估的贡献，克隆繁殖的藤本植物在其自然栖息地的分布，利用遗传工具。本研究的目的是探讨（1）克隆繁殖对花紫藤分布的贡献，（2）克隆斑块的大小，（3）花紫藤的分布格局。结果表明，落叶藤本植物的无性系分布受微地形的影响。floriariawas评估使用遗传分析在6公顷的地块的古老的温带森林在日本和偏好之间的地形克隆分株和非克隆分株assessed.Key ResultsOf的391分株采样，克隆繁殖贡献的71和62%的总丰度和断面积，分别为57和31%时，最大的分株内的基因被排除在外。克隆繁殖对黑松密度和断面积的贡献较大。floriflavone与以前的观察性研究一致。最大的基群包括0.47公顷的斑块大小，范围超过180米。克隆分株和非克隆分株的优势地形在多度和断面积两个指标上存在显著差异。非克隆分株在坡下部的分布比其他地形的克隆分株和树木相比，可能反映了匍匐茎的克隆生长的限制。在它的自然栖息地。结果表明，克隆繁殖不仅在种群形成中起重要作用，而且在决定藤本植物的分布格局中也起重要作用。
Background and AimsExtensive clonal (vegetative) reproduction in lianas is a common and important life history strategy for regeneration and colonization success. However, few studies have evaluated the contribution of clonal reproduction to stand-level distribution of lianas in their natural habitat using genetic tools. The objectives of the present study were to investigate (1) the contribution of clonal reproduction to the distribution ofWisteria floribunda, (2) the size of clonal patches and (3) how the distribution patterns ofW. floribundaclones are affected by micro-topography.MethodsThe contribution of clonal reproduction to the distribution of the deciduous liana speciesW. floribundawas evaluated using genetic analysis across a 6-ha plot of an old-growth temperate forest in Japan and preference in landform between clonal ramets and non-clonal ramets was assessed.Key ResultsOf the 391 ramets sampled, clonal reproduction contributed to 71 and 62 % of the total abundance and basal area, respectively, or 57 and 31 % when the largest ramet within a genet was excluded. The large contribution of clonal reproduction to the density and basal area ofW. floribundawas consistent with previous observational studies. The largest genet included a patch size of 0.47 ha and ranged over 180 m. Preferred landforms of clonal and non-clonal ramets were significantly different when evaluated by both abundance and basal area. Non-clonal ramets distributed more on lower part of the slope than other landforms in comparison with clonal ramets and trees, possibly reflecting the limitation of clonal growth by stolons.ConclusionsUsing genetic analysis, the present study found evidence of a large contribution of clonal reproduction on the distribution ofW. floribundain its natural habitat. The results indicate that clonal reproduction plays an important role not only in the formation of populations but also in determining the distribution patterns of liana species.