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首页> 外文期刊>Hydrobiologia >Widespread cytonuclear discordance in narrow-leaved cattail (Typha angustifolia) does not explain the dominance of its invasive hybrid (Typha x glauca)
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Widespread cytonuclear discordance in narrow-leaved cattail (Typha angustifolia) does not explain the dominance of its invasive hybrid (Typha x glauca)

机译：在狭窄的叶子（Typha angustifolia）中广泛的核心核心不等调并未解释其侵入性杂交的统治性（Typha x glauca）

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摘要

Cattails (Typha spp.) are common and abundant in wetlands around the world, and can be invasive. Typha latifolia and T. angustifolia are two widely distributed species that in North America produce the invasive hybrid T. x glauca, of which T. angustifolia is the maternal parent. A recent study identified polyphyly in T. angustifolia resulting from core and divergent chloroplast DNA (cpDNA) lineages. We used a combination of chloroplast and nuclear genetic data to test two hypotheses: (1) T. angustifolia with the divergent cpDNA lineage represents a cryptic species and (2) divergent cpDNA T. angustifolia haplotypes predominate in areas where T. x glauca is invasive. Our data reject the hypothesis of a cryptic species, and we suggest that the divergent lineage arose in T. angustifolia following historical hybridization and introgression. Typha x glauca may therefore be a three-way hybrid involving T. latifolia, T. angustifolia, and an introgressed cpDNA lineage from an unidentified congener. The divergent cpDNA T. angustifolia haplotype is widespread across areas where T. x glauca is invasive, but is also found in areas where T. x glauca is maintained at very low frequencies; therefore, cpDNA lineages cannot be the sole explanation for T. x glauca invasiveness.
机译：Cattails（Typha SPP）在世界各地的湿地是常见的，丰富，并且可以是侵入性的。 Typha Latifolia和T.Angustifolia是两个广泛分布的物种，在北美生产侵袭性杂交T. x Glauca，其中T.Angustifolia是母亲父母。最近的一项研究在核心和发散的叶绿体DNA（CPDNA）谱系中鉴定在T.Angustifolia中的研究。我们使用叶绿体和核遗传数据的组合来测试两份假设：（1）与发散的CpdNA谱系代表了肝癌的天使，（2）发散的CpdNA T.Angustifolia haplotypes占主导地位T.X glauca是侵袭性的区域。我们的数据抑制了隐秘物种的假设，我们建议在历史杂交和血液引入后的T.Angustifolia中出现的发散谱系。因此，Typha X Glauca可能是一种涉及T. Latifolia，T.Angustifolia的三元杂种，以及来自身份不明的同志的狭窄的CPDNA谱系。分歧CPDNA T.Angustifolia单倍型在T.X glauca是侵入性的区域，但也发现在T.X glauca保持在非常低的频率的区域中;因此，CPDNA谱系不能成为T. x Glauca侵犯性的唯一解释。

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