Abstract

VARGAS-VAZQUEZ, Víctor Abraham; SANCHEZ-RANGEL, Ninfa Isabel; HERNANDEZ-CUEVAS, Laura Verónica  and  GUEVARA-GUERRERO, Gonzalo. Species richness of mycorrhizal fungi associated with plants from the Euphorbiaceae family in the Altas Cumbres Protected Area, Tamaulipas, Mexico. CienciaUAT [online]. 2021, vol.16, n.1, pp.6-19.  Epub Dec 13, 2021. ISSN 2007-7858.  https://doi.org/10.29059/cienciauat.v16i1.1527.

The arbuscular mycorrhizal fungi (AMF) are important for the development and survival of plants. This has motivated the analysis of the use of some AMF species with commercial use as crop biofertilizers at the national level. In Tamaulipas, knowledge of AMF diversity is scarce. The objective of this work was to determine the presence and taxonomic identity of AMF associated with the Euphorbiaceae family (sensu lato) in the Altas Cumbres Protected Area. The spores were obtained through propagules extracted from trap plants of different species grown in the soil and roots of the area under study. The mycorrhizal status was determined by the Phillips and Hayman staining technique and the identification of AMF through the extraction of spores by the wet sieving method with sucrose centrifugation and their morphological characterization. All the roots showed typical AMF structures, evidencing the presence of this association in the 74 euphorbiaceae taxa. A richness of 9 AMF species located within 6 genera, 4 families and 3 orders were recorded, with Glomus (Glomeraceae famiy) being the genus with the highest specific richness. The presence of the genera Entrophospora, Funneliformis and Rhizophagus was detected for the first time in Tamaulipas. The results denote how widely distributed AMF are found in plants of the Euphorbiaceae family in the Altas Cumbres Protected Area, highlighting the need to continue with investigations on arbuscular mycorrhizae.

Keywords : endomycorrhizal; species richness; Glomeromycota; Euphorbiaceae.