Genetic Dissimilarity in Conyza sumatrensis Revealed by Simple Sequence Repeat (SSR) Markers

IF 0.8 Q3 Agricultural and Biological Sciences Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100018

T. Schneider, M. A. Rizzardi, S. Brammer, S. Scheffer-Basso, A. L. Nunes

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引用次数: 1

Abstract

ABSTRACT: In view of the rapid evolution of Conyza sumatrensis populations resistant to glyphosate, it is necessary to understand the genetic diversity aimed to improve strategies for managing this weed. We investigated the genetic dissimilarity among 15 biotypes of C. sumatrensis from different geographic regions using microsatellite loci. The biotypes, were cultivated in a greenhouse to obtain vegetal material for DNA extraction. Nineteen microsatellite markers (SSR), were developed for C. sumatrensis biotypes. The genetic dissimilarity was estimated by the Jaccard coefficient (JC) and the biotypes grouped by the UPGMA method. The results demonstrated a high dissimilarity (JC = 7.14 to 82.62) of the analyzed material, with the biotypes forming five groups, being one group formed just by the susceptible biotype and in the others grouped by biotypes from distinct locations in the same group The high genetic diversity of C. sumatrensis indicates that the biotypes may show different responses to different management strategies, and that the mechanisms of resistance to herbicides and characteristics of evolution of populations due to adaptability may be some of the factors involved in the genetic variability of the species.

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简单序列重复(SSR)标记揭示苏门答腊鱼的遗传差异

摘要/ ABSTRACT摘要:鉴于苏门答腊岛甘草膦抗性种群的快速进化，了解其遗传多样性对改善该杂草的管理策略是必要的。利用微卫星基因座对不同地理区域苏门答腊猴15个生物型的遗传差异性进行了研究。这些生物型在温室中培养，以获得用于DNA提取的植物材料。建立了19个微卫星标记(SSR)。利用Jaccard系数(JC)估计遗传差异，并采用UPGMA方法进行生物型分类。结果表明，各生物型具有较高的差异性(JC = 7.14 ~ 82.62)，分为5个类群，其中一个类群仅由敏感生物型组成，另一个类群由同一类群中不同位置的生物型组成。苏门答竹具有较高的遗传多样性，表明不同生物型对不同的管理策略有不同的反应。对除草剂的抗性机制和种群的适应性进化特征可能是导致该物种遗传变异的一些因素。

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来源期刊

Planta Daninha Agricultural and Biological Sciences-Plant Science

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0.00%

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审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.