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芋头杂交后的叶绿体捕获与范围扩展（）。

Chloroplast capture and range extension after hybridization in taro ().

作者信息

Matthews P J, Hossain M A, Sookchaloem D, Nguyen V D, Wong S Y, Joling J, Schranz M E, Bakker F T, Tabuchi E, Ahmed I, Hay A

机构信息

Department of Cross-Field Research National Museum of Ethnology Suita Japan.

Department of Genetics and Plant Breeding Bangladesh Agricultural University Mymensingh Bangladesh.

出版信息

Ecol Evol. 2024 Aug 27;14(8):e70082. doi: 10.1002/ece3.70082. eCollection 2024 Aug.

DOI:10.1002/ece3.70082
PMID:39206463
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11349486/
Abstract

Complete chloroplast genomes of 17 samples from six species of (Araceae) were sequenced, assembled, and aligned together with two previously reported complete genome sequences from taro (). Analysis provides a well-supported phylogenetic tree for taro and closely-related wild species in Southeast Asia. Two chloroplast lineages (CI and CII) form a well-defined haplotype group and are found in cultivated taros known as var. esculenta (dasheen, CI), var. (eddoe, CII), and in a widespread, commensal wild form known as var. (CI). A third lineage (CIII) is also found in wild taros known as var. and in the wild species , , and . We suggest three different scenarios to explain the grouping of CIII wild taros () with other wild species. Chloroplast lineages CI and CIII in and an unknown parent species may be involved in an as yet undated history of hybridization, chloroplast capture, and range extension. Substantial taxonomic revision may be needed for after further studies of morphological and genetic diversity within the crop, in wild populations, and in closely related wild species. The results also point to the Bengal delta as a region of key interest for future research on the origins of tropical wetland taros.

摘要

对天南星科6个物种的17个样本的完整叶绿体基因组进行了测序、组装，并与之前报道的两个芋头完整基因组序列进行了比对。分析为芋头和东南亚密切相关的野生天南星物种提供了一个有充分支持的系统发育树。两个叶绿体谱系（CI和CII）形成了一个明确的单倍型组，存在于名为var. esculenta（大薯，CI）、var. （小薯，CII）的栽培芋头中，以及一种广泛分布的共生野生类型var. （CI）中。第三个谱系（CIII）也存在于名为var. 的野生芋头以及野生物种 、 和 中。我们提出了三种不同的情况来解释CIII野生芋头（ ）与其他野生天南星物种的分组。芋头和一个未知亲本物种中的叶绿体谱系CI和CIII可能参与了一段尚未确定时间的杂交、叶绿体捕获和范围扩展的历史。在对该作物、野生种群和密切相关的野生物种的形态和遗传多样性进行进一步研究后，可能需要对天南星进行大量的分类修订。研究结果还表明，孟加拉三角洲是未来热带湿地芋头起源研究的一个关键关注区域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/a5b8e142ddcc/ECE3-14-e70082-g020.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/49208c70ee6d/ECE3-14-e70082-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/5f6ae266829c/ECE3-14-e70082-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/a303c83e68f1/ECE3-14-e70082-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/7d9da9413fe3/ECE3-14-e70082-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/203129e67e91/ECE3-14-e70082-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/021d801aada3/ECE3-14-e70082-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/340e64a90c9c/ECE3-14-e70082-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b57d/11349486/10140c18956e/ECE3-14-e70082-g008.jpg
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