Chiba de Castro Wagner Antonio, Vaz Giselle Cristina de Oliveira, Silva Matos Dalva Maria da, Vale Alvaro Herrera, Bueno Any Caroline Pantaleão, Fagundes Luiz Fernando Grandi, Costa Letícia da, Bonugli Santos Rafaella Costa
Neotropical Biodiversity Graduate Program, Federal University of Latin American Integration, Foz do Iguaçu 85866-000, PR, Brazil.
Latin American Institute of Life and Nature Sciences, Federal University of Latin American Integration, Foz do Iguaçu 85866-000, PR, Brazil.
Plants (Basel). 2023 May 30;12(11):2162. doi: 10.3390/plants12112162.
Invasive plants affect ecosystems across various scales. In particular, they affect the quality and quantity of litter, which influences the composition of decomposing (lignocellulolytic) fungal communities. However, the relationship among the quality of invasive litter, lignocellulolytic cultivated fungal community composition, and litter decomposition rates under invasive conditions is still unknown. We evaluated whether the invasive herbaceous affects the litter decomposition in the Atlantic Forest and the lignocellulolytic cultivated fungal community composition. We placed litter bags with litter from the invader and native plants in invaded and non-invaded areas, as well as under controlled conditions. We evaluated the lignocellulolytic fungal communities by culture method and molecular identification. Litter from decomposed faster than litter from native species. However, the invasion of did not alter decomposition rates of either litter type. Although the lignocellulolytic fungal community composition changed over decomposition time, neither the invasion of nor litter type influenced lignocellulolytic fungal communities. We believe that the high plant richness in the Atlantic Forest enables a highly diversified and stable decomposing biota formed in conditions of high plant diversity. This diversified fungal community is capable of interacting with different litter types under different environmental conditions.
入侵植物会在不同尺度上影响生态系统。特别是，它们会影响凋落物的质量和数量，而这又会影响分解（木质纤维素分解）真菌群落的组成。然而，在入侵条件下，入侵凋落物的质量、木质纤维素分解培养真菌群落组成和凋落物分解速率之间的关系仍然未知。我们评估了这种入侵草本植物是否会影响大西洋森林中的凋落物分解以及木质纤维素分解培养真菌群落组成。我们在入侵和未入侵区域以及受控条件下放置了装有来自入侵植物和本地植物凋落物的垃圾袋。我们通过培养方法和分子鉴定来评估木质纤维素分解真菌群落。来自[入侵植物名称]的凋落物比本地物种的凋落物分解得更快。然而，[入侵植物名称]的入侵并没有改变任何一种凋落物类型的分解速率。尽管木质纤维素分解真菌群落组成在分解过程中发生了变化，但[入侵植物名称]的入侵和凋落物类型都没有影响木质纤维素分解真菌群落。我们认为，大西洋森林中丰富的植物种类使得在高植物多样性条件下形成了高度多样化且稳定的分解生物群。这种多样化的真菌群落能够在不同环境条件下与不同的凋落物类型相互作用。
