Taxonomic revision of the southern hemisphere pygmy forget-me-not group (Myosotis; Boraginaceae) based on morphological, population genetic and climate-edaphic niche modelling data

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-05-05 DOI:10.1071/SB21031

Jessica M. Prebble, V. V. Symonds, J. Tate, Heidi M. Meudt

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引用次数: 1

Abstract

ABSTRACT A taxonomic revision of the southern hemisphere pygmy forget-me-not group (Myosotis L.; Boraginaceae) is presented here. Climate-edaphic niches are modelled and compared for five species in the pygmy group, namely, M. antarctica Hook.f., M. brevis de Lange & Barkla, M. drucei (L.B.Moore) de Lange & Barkla, M. pygmaea Colenso and M. glauca (G.Simpson & J.S.Thomson) de Lange & Barkla, and one unnamed putative taxon, M. “Volcanic Plateau”. In this case, niche-modelling data mostly do not aid species delimitation, but morphological and genetic data provide evidence for recognising the following three species within the group: M. brevis and M. glauca (both endemic to New Zealand), and an enlarged M. antarctica (native to New Zealand, Campbell Island and Chile). Myosotis antarctica is here circumscribed to include M. antarctica sens. strict., M. drucei and M. pygmaea. The following two allopatric subspecies of M. antarctica are recognised on the basis of minor morphological differences: subsp. antarctica (formerly M. antarctica from Campbell Island and Chile, M. drucei and M. “Volcanic Plateau”) and subsp. traillii Kirk (formerly known by New Zealand botanists as M. pygmaea Colenso, an illegitimate name). For all three species, which are considered Threatened or At Risk, most of their genetic variation is partitioned between rather than within populations, meaning that conserving as many populations as possible should be the priority to minimise risk of extinction.

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南半球侏儒健忘群(Myosotis;基于形态学、种群遗传和气候地理生态位建模数据

摘要南半球侏儒健忘群(Myosotis L.;Boraginaceae)在这里呈现。气候-地理生态位被模拟并比较了侏儒类群中的五个物种，即M. antarctica Hook.f。， M. brevis de Lange & Barkla, M. drucei (l.b.m omoore) de Lange & Barkla, M. pygmaea Colenso和M. glauca (G.Simpson & j.s.汤姆逊)de Lange & Barkla，以及一个未命名的推定分类单元M.“火山高原”。在这种情况下，生态位建模数据大多不能帮助物种划分，但形态和遗传数据为识别该群体中的以下三个物种提供了证据:M. brevis和M. glauca(都是新西兰特有的)，以及一个扩大的M. antarctica(原产于新西兰、坎贝尔岛和智利)。南极肌炎在此限定包括南极肌炎。，杜氏杆菌和pygmaea。根据微小的形态差异，可以识别出南极南极支原体的以下两个异域亚种:亚种;南极洲(原产于坎贝尔岛和智利的M. antarctica, M. drucei和M.“火山高原”)和亚sp。traillii Kirk(以前被新西兰植物学家称为M. pygmaea Colenso，一个非法的名字)。对于这三个被认为是受威胁或处于危险中的物种来说，它们的大部分遗传变异都是在种群之间而不是在种群内部划分的，这意味着保护尽可能多的种群应该是将灭绝风险降到最低的首要任务。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.