Micolino Ricardo, Górski Felipe, Zchonski Felipe Liss, Gonçalves Rhaniel Nicholas Lisowski, da Rosa Juliana, Da-Silva Paulo Roberto
DNA Laboratory, Universidade Estadual do Centro-Oeste, UNICENTRO, Alameda Élio Antonio Dalla Vecchia, 838, Guarapuava, Paraná, 85040-167, Brazil.
AoB Plants. 2024 Sep 13;16(5):plae050. doi: 10.1093/aobpla/plae050. eCollection 2024 Oct.
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 and 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 Spreng., a herb native to South America. To achieve our goals, we compared population genetic data obtained with three molecular markers (microsatellites, 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 populations. 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 6 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 is a species that inhabits open grassland that needs a 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.
人口增长持续需要增加粮食产量以及木材工业产品的产量。为满足这一需求，农业和人工林正在侵占自然区域。鉴于此，有必要了解不同用途（粮食生产、牧场、人工林、水果生产及其他用途）的土地利用对本地物种种群遗传多样性的影响。这些知识有助于土地利用规划以及本地物种保护策略的制定。在本研究中，我们评估了农业用地（主要用于谷物生产）和人工林对南美本土草本植物Spreng.遗传多样性的影响。为实现我们的目标，我们将通过三种分子标记（微卫星、简单序列重复区间和同工酶）获得的种群遗传数据与来自15个不同地点的农业用地和人工林土地利用数据进行了比较。我们的结果表明，无论使用何种分子标记，农业用地和人工林的使用程度越高，种群的遗传多样性就越低。Spreng.是一种半多年生植物，至少需要一年时间才能进入生殖期，而在农业区域，由于土地每6个月就会被翻耕或用除草剂处理，其生殖期受到阻碍。在研究区域内，人工林为桉树和/或松树，这些树种除了是化感物质高产物种外，还会产生强烈的遮荫，而Spreng.是一种栖息于开阔草地、需要充足阳光照射才能生长的物种。我们研究中获得的数据有助于在土地利用决策中协调人类物资生产与自然保护之间的关系。
