Microhabitat heterogeneity associated with Vanilla spp. and its influences on the microbial community of leaf litter and
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https://doi.org/10.1007/s42832-020-0041-7
RESEARCH ARTICLE
Microhabitat heterogeneity associated with Vanilla spp. and its influences on the microbial community of leaf litter and soil Gabriela Montes de Oca-Vásquez1, Frank Solano-Campos2 ,*, Bernal Azofeifa-Bolaños2,3, Amelia Paniagua-Vasquez4, José Vega-Baudrit1,5, Antonio Ruiz-Navarro6, Rubén López-Mondéjar7, Felipe Bastida6 1 2 3 4 5
National Nanotechnology Laboratory, National Center for High Technology, 10109 Pavas, San José, Costa Rica School of Biological Sciences, Universidad Nacional, Campus Omar Dengo, 86-3000 Heredia, Costa Rica Asociación Nacional de Vainilleros Unidos, San José, Costa Rica Instituto de Investigación y Servicios Forestales, Universidad Nacional, 86-3000 Heredia, Costa Rica Laboratory of Polymer Science and Technology, School of Chemistry, Universidad Nacional, Campus Omar Dengo, 86-3000 Heredia, Costa Rica 6 CEBAS-CSIC, Department of Soil and Water Conservation, Campus Universitario de Espinardo, 30100, Murcia, Spain 7 Laboratory of Environmental Microbiology, Institute of Microbiology of the CAS, Vídeňská 1083, Praha 4 14220, Czech Republic
ARTICLE INFO
ABSTRACT
Article history: Received November 16, 2019
The impact of forest microhabitats on physiochemical properties of the soil and that of
Revised March 11, 2020
tropical forest stand on leaf litter and soil microbial communities, we studied enzyme activities,
Accepted May 11, 2020
microbial biomass, and diversity in three distinct microhabitats in terms of plant richness, diameter at breast height (DBH), and physiochemical properties of soil and litter, each
Keywords:
associated with a different Vanilla sp. In the soil, positive correlations were found between
Tropical rainforest
electrical conductivity (EC) and total organic carbon (TOC) with phosphatase activity, and
Enzyme activity
between nitrogen (N) and water-soluble carbon (WSC) content with urease activity (UA). In the
Microbial community composition
litter, the water content was positively correlated with bacterial and fungal biomass, and N and
Microbial biomass
WSC contents were positively correlated with fungal biomass. Positive correlations were found
Plant richness
between plant richness and UA in the soil, plant richness and fungal biomass in the soil and
microbial communities on tropical soils remain poorly understood. To elucidate the effect of
litter, and DBH and fungal biomass in the litter. Amplicon sequencing revealed differences between microhabitats in the relative abundance of some fungal and bacterial taxa and in the bacterial community composition of both litter and soil. Bacterial richness and diversity were different between microhabitats, and, in litter samples, they were negatively correlated with DBH and plant richness, respectively. By contrast, none of the soil and litter physiochemical properties were significantly correlated with microbial diversity. Our results show that significant shifts in enzyme activity, microbial biomass, and diversity in the microhabitats were driven by
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