Deconstructing the evolutionary complexity between rust fungi (Pucciniales) and their plant hosts

IF 14.1 1区生物学 Q1 MYCOLOGY Studies in Mycology Pub Date : 2018-03-01 DOI:10.1016/j.simyco.2018.02.002

M.C. Aime , C.D. Bell , A.W. Wilson

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引用次数: 74

Abstract

The rust fungi (Pucciniales) are the most speciose natural group of plant pathogens, members of which possess the most complex lifecycles in Fungi. How natural selection works on the Pucciniales has been the subject of several hypotheses in mycology. This study uses molecular age estimation using sequence data from multiple loci, and cophylogeny reconciliation analyses to test hypotheses regarding how the aecial and telial stages in the lifecycle of rust fungi may have differentially impacted their diversification. Molecular age estimates show that the timing of diversification in the Pucciniales correlates with the diversification of their gymnosperm and angiosperm hosts. Host reconciliation analyses suggest that systematic relationships of hosts from the aecial stage of the Pucciniales lifecycle better reflect the systematic relationships among the Pucciniales. The results demonstrate the relative importance of this stage on the overall evolution of the Pucciniales and supports hypotheses made by Leppik over half a century ago. This study represents the first evaluation of how different life stages in the Pucciniales shape the evolution of these fungi.

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解构锈菌及其宿主植物之间的进化复杂性

锈菌是种类最多的天然植物病原体类群，其成员在真菌中具有最复杂的生命周期。在真菌学中，自然选择是如何作用于puccininiales的一直是几个假设的主题。本研究利用来自多个位点的序列数据进行分子年龄估算，并通过共生系调节分析来验证关于铁锈真菌生命周期中的非特殊和晚期阶段可能对其多样性产生差异影响的假设。分子年龄估计表明，puccininiales的多样化时间与其裸子植物和被子植物宿主的多样化有关。寄主调和分析表明，特殊阶段寄主的系统关系较好地反映了寄主之间的系统关系。研究结果证明了这一阶段对普契尼亚人整体进化的相对重要性，并支持了Leppik在半个多世纪前提出的假设。这项研究首次评估了puccininiales的不同生命阶段如何影响这些真菌的进化。

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来源期刊

Studies in Mycology 生物-真菌学

CiteScore

35.60

自引率

3.00%

发文量

期刊介绍： The international journal Studies in Mycology focuses on advancing the understanding of filamentous fungi, yeasts, and various aspects of mycology. It publishes comprehensive systematic monographs as well as topical issues covering a wide range of subjects including biotechnology, ecology, molecular biology, pathology, and systematics. This Open-Access journal offers unrestricted access to its content. Each issue of Studies in Mycology consists of around 5 to 6 papers, either in the form of monographs or special focused topics. Unlike traditional length restrictions, the journal encourages submissions of manuscripts with a minimum of 50 A4 pages in print. This ensures a thorough exploration and presentation of the research findings, maximizing the depth of the published work.