Evaluation of the diversity and genetic structure of Ceratozamia kuesteriana Regel. (Zamiaceae) in Tamaulipas, Mexico

IF 1.1 4区生物学 Q4 ECOLOGY

Plant Species Biology Pub Date : 2024-04-21 DOI:10.1111/1442-1984.12455

P. Octavio-Aguilar, Cuauhtémoc Alain Rubio‐Tobón, Gerardo Montelongo‐Ruiz, Dulce María Galván-Hernández

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Abstract

Genetic diversity is the most widely used indicator to evaluate the evolutionary potential of a species. In theory, species with limited distribution are more susceptible to diversity loss. However, some species with restricted distribution occasionally present more diversity than expected, as is the case for some cycads. Ceratozamia kuesteriana is a microendemic species in El Cielo Biosphere Reserve in Tamaulipas, Mexico. Several previously reported populations have been eradicated in the last 10 years. The objective of this work was to estimate the levels of diversity and genetic structure in five populations within the reserve. The results show a high structure and differentiation, even when the populations are geographically proximal. However, overall diversity is high, with recent bottlenecks and alleles departing from neutrality, suggesting a broad, well‐adapted genetic base. Unfortunately, this genetic pool has recently become fragmented, posing a high extinction risk if allelic representativeness is absent in collections or botanical gardens.

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评估墨西哥塔毛利帕斯地区 Ceratozamia kuesteriana Regel.(墨西哥塔毛利帕斯州的 Ceratozamia kuesteriana Regel（Zamiaceae）的多样性和遗传结构

遗传多样性是评估物种进化潜力最广泛使用的指标。从理论上讲，分布有限的物种更容易受到多样性丧失的影响。然而，一些分布有限的物种偶尔也会呈现出比预期更多的多样性，一些苏铁类植物就是如此。Ceratozamia kuesteriana 是墨西哥塔毛利帕斯州 El Cielo 生物圈保护区的一个微型特有物种。在过去 10 年中，以前报告的几个种群已被消灭。这项工作的目的是评估保护区内五个种群的多样性水平和遗传结构。结果表明，即使种群地理位置相近，其结构和分化程度也很高。然而，总体多样性很高，最近出现了瓶颈和等位基因偏离中性的情况，这表明有一个广泛的、适应性良好的遗传基础。不幸的是，这个基因库最近变得支离破碎，如果等位基因的代表性在收藏品或植物园中缺失，就会带来很高的灭绝风险。

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

Plant Species Biology 生物-生态学

CiteScore

2.70

自引率

14.30%

发文量

审稿时长

>12 weeks

期刊介绍： Plant Species Biology is published four times a year by The Society for the Study of Species Biology. Plant Species Biology publishes research manuscripts in the fields of population biology, pollination biology, evolutionary ecology, biosystematics, co-evolution, and any other related fields in biology. In addition to full length papers, the journal also includes short research papers as notes and comments. Invited articles may be accepted or occasion at the request of the Editorial Board. Manuscripts should contain new results of empirical and/or theoretical investigations concerning facts, processes, mechanisms or concepts of evolutionary as well as biological phenomena. Papers that are purely descriptive are not suitable for this journal. Notes & comments of the following contents will not be accepted for publication: Development of DNA markers. The journal is introducing ''Life history monographs of Japanese plant species''. The journal is dedicated to minimizing the time between submission, review and publication and to providing a high quality forum for original research in Plant Species Biology.