Multiple Origins of the Japanese Nocturnal Hemerocallis citrina var. vespertina (Asparagales: Hemerocallidaceae): Evidence from Noncoding Chloroplast DNA Sequences and Morphology
Multiple Origins of the Japanese Nocturnal Hemerocallis citrina var. vespertina (Asparagales: Hemerocallidaceae): Evidence from Noncoding Chloroplast DNA Sequences and Morphology
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日本夜生黄花苜蓿的多重起源。
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Hong De
中科院分区：
文献类型：
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作者：
J. Noguchi;Hong De
研究了日本夜行萱草（萱草科）的起源和演化。通过对3个非编码叶绿体区域、rbcL - atpB基因间区、trnL （UAA）内含子、trnL (UAA) 3′外显子与trnF （GAA）之间的间隔区核苷酸序列的分析，对花的寿命和13个外部形态性状进行了测定，并与分子系统发育树进行了比较。我们发现不仅质量性状发生了进化变化，数量性状也发生了进化变化。分子系统发育分析结果表明，黄精未形成单系类群；在分子树的进化枝中包含了这两个物种，这表明日本黄貂鱼有多个起源，并且起源于至少三个不同的谱系，这些谱系分别通过不同的途径入侵日本群岛；而对花朵寿命的进化适应也同时发生。基于形态学、物候学和分子分析，我们认为传粉媒介介导的花性状进化变化伴随着花寿命的适应性进化。
The origin and evolution of the Japanese nocturnal Hemerocallis citrina var. vespertina (Asparagales: Hemerocallidaceae) were studied. Flower longevity and 13 external morphological characters were measured and compared with a molecular phylogenetic tree obtained from the nucleotide sequences of three noncoding chloroplast regions, the rbcL‐atpB intergenic region, the trnL (UAA) intron, and the spacer region between trnL (UAA) 3′ exon and trnF (GAA). We found evolutionary changes not only in qualitative traits but also in quantitative traits. Results from the molecular phylogenetic analyses showed that H. citrina var. vespertina did not form a monophyletic group; that clades in the molecular tree contained both species, indicating that Japanese H. citrina var. vespertina had multiple origins and originated from at least three different lineages that invaded the Japanese Archipelagoes separately through different routes; and that evolutionary adaptation for flower longevity occurred in parallel. Based on morphological, phenological, and molecular analyses, we suggest that pollinator‐mediated evolutionary changes in floral characters were accompanied by adaptive evolution for flower longevity.