This study aimed to inventory fungal populations associated with the rhizosphere of Avicennia germinans in different salinity levels in a semi-arid mangrove in the Colombian tropics. Targeting the ITS1 and ITS2 regions provided complementary information, allowing a better approach to inventorying the fungal biodiversity. Amorosia and Aspergillus were the most abundant ascomycete genera, while Cystobasidium was the most abundant basidiomycete genus. Only five genera showed significant differences in abundance among the three salinity levels. Nevertheless, 65.4% of the genera were classified as exclusive for a specific salt content. Saprotrophs were the most abundant functional group and symbiotrophs were detected as mycorrhizas, fungi with biocontrol activity and entomopathogenic activity. These ecological groups play an important role in the cycling of organic matter and the availability of nutrients for mangrove plants and their tolerance to environmental and biotic stresses. This study highlights soil salinity as a determining factor in the composition of the fungal community in mangroves.

这项研究的目的是盘点哥伦比亚热带地区半干旱红树林中不同盐度水平下与青蒿素根际相关的真菌种群。以ITS1和ITS2为目标区域可提供补充信息，从而为盘点真菌生物多样性提供了更好的方法。Amorosia和Aspergillus是最丰富的子囊菌属，而Cystobasidium是最丰富的担子菌属。在三个盐度水平之间，只有五个属显示出丰度的显着差异。不过，对于特定的盐含量，有65.4％的属被归类为排他性的。腐生菌是最丰富的功能基团，共生菌为菌根，具有生防活性和昆虫病原活性的真菌。这些生态群体在红树林植物的有机物循环和营养供应以及它们对环境和生物胁迫的耐受性中起着重要作用。这项研究强调了土壤盐分是决定红树林真菌群落组成的因素。