Land use to agriculture and planted forests strongly affect the genetic diversity of Baccharis crispa Spreng., a native herb of South America

IF 2.6 3区 生物学 Q2 ECOLOGY
AoB Plants Pub Date : 2024-09-14 DOI:10.1093/aobpla/plae050
Ricardo Micolino, Felipe Górski, Felipe Liss Zchonski, Rhaniel Nicholas Lisowski Gonçalves, Juliana da Rosa, Paulo Roberto Da-Silva
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Abstract

Human population growth constantly requires an increase in the production of food and products from the timber industry. To meet this demand, agriculture and planted forests are advancing over natural areas. In view of this, it is necessary to know the effects of land use for different purposes (grain production, pastures, planted forests, fruit production, among other uses) on the genetic diversity of populations of native species. This knowledge can assist in land use planning as well as in the development of conservation strategies for native species. In this study, we evaluated the effect of land use for agriculture (mainly for cereal production) and planted forests on the genetic diversity of Baccharis crispa Spreng., a herb native to South America. To achieve our goals, we compared population genetic data obtained with three molecular markers (microsatellites, ISSR [inter-simple sequence repeat] and isoenzymes) with data on land use for agriculture and planted forests from 15 different locations. Our results showed that regardless of the molecular marker used, the greater the use of land for agriculture and planted forests, the lower was the genetic diversity of B. crispa populations. Baccharis crispa is a semi-perennial species that needs at least one year to reach its reproductive period, which is prevented in agricultural areas due to the land being turned over or dissected with herbicides every six months. In the studied regions, the planted forests are of eucalypt and/or pine, which besides being species with a high production of allelopathic substances, produce strong shading and B. crispa is a species that inhabits open grassland that needs high incidence of sunlight for development. The data obtained in our study can assist in the decision-making to use land in order to reconcile the production of supplies for humanity and for the conservation of nature.
农业用地和人工林对南美洲原生草本植物 Baccharis crispa Spreng.
人类人口的不断增长要求增加粮食和木材工业产品的产量。为了满足这一需求,农业和人工林的发展速度超过了自然区域。有鉴于此,有必要了解不同用途的土地(粮食生产、牧场、人工林、水果生产等)对本地物种种群遗传多样性的影响。这方面的知识有助于土地利用规划以及本土物种保护战略的制定。在这项研究中,我们评估了农业用地(主要用于谷物生产)和人工林对原产于南美洲的草本植物 Baccharis crispa Spreng.为了实现研究目标,我们将利用三种分子标记(微卫星、ISSR(简单序列间重复)和同工酶)获得的种群遗传数据与 15 个不同地点的农业用地和人工林数据进行了比较。我们的研究结果表明,无论使用哪种分子标记,农业用地和人工林面积越大,酥树蛙种群的遗传多样性就越低。酥树蛙是半多年生物种,至少需要一年的时间才能进入繁殖期,而在农业地区,由于每隔六个月就要翻耕土地或用除草剂除草,因此无法进入繁殖期。在所研究的地区,人工林都是桉树和/或松树,这些树种除了能产生大量的等位物质外,还能产生很强的遮阳效果,而 B. crispa 是一种栖息在开阔草地上的树种,需要大量的阳光才能生长。我们在研究中获得的数据有助于土地使用决策,从而协调人类生产和自然保护之间的关系。
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
AoB Plants
AoB Plants PLANT SCIENCES-
CiteScore
4.80
自引率
0.00%
发文量
54
审稿时长
20 weeks
期刊介绍: AoB PLANTS is an open-access, online journal that has been publishing peer-reviewed articles since 2010, with an emphasis on all aspects of environmental and evolutionary plant biology. Published by Oxford University Press, this journal is dedicated to rapid publication of research articles, reviews, commentaries and short communications. The taxonomic scope of the journal spans the full gamut of vascular and non-vascular plants, as well as other taxa that impact these organisms. AoB PLANTS provides a fast-track pathway for publishing high-quality research in an open-access environment, where papers are available online to anyone, anywhere free of charge.
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