Abstract
ABSTRACT Vetiver grass is a member of the grass family Poaceae. Its fast development is probably due to the interaction with native microbiota, whose influence has not been studied yet. The objective of this work was to evaluate the colonization and development of the vetiver grass (Chrysopogon zizanioides (L.) Roberty) inoculated with arbuscular mycorrhizal fungi and dark septate endophytic fungi. The experimental design was a completely randomized design with six treatments (control, without mycorrhizal fungi, native inoculants, UFLA05 - Gigaspora albida, UFLA351 - Rhizoglomus clarum, UFLA372 - Claroideoglomus etunicatum, and UFLA401 - Acaulospora morrowiae), with three replicates each. Vetiver grass tillers as well as the native microbial inoculum were obtained from the Lower São Francisco river experimental area, located in Sergipe state, Northeastern Brazil. There was a negative interaction between all tested UFLAs mycorrhizal isolates and the native microbiota (mycorrhizal and endophytic fungi) in the treatments, especially when taking into consideration plant height and volume of roots. The effects of inoculation with UFLA isolates may have been influenced by the presence of the native mycorrhizal fungi and the dark septate endophytic fungi. Vetiver grass was responsive to the native inoculant. The mycorrhizal colonization of the vetiver grass was vesicular, but the formation of the arbuscules can be influenced by the interaction between the fungus, plant, and the environment.
Highlights
Vetiver grass is a member of the grass family Poaceae
The native microbial inoculum was collected from the collected from the soil's rhizosphere of vetiver grass plants grown in the experimental area of a project studying soil bioengineering techniques for erosion control in the slopes of the right bank of the lower São Francisco River, in the municipality of Amparo de São Francisco, in Sergipe state, Northeastern Brazil
The effect of the inoculation of the arbuscular mycorrhizal isolates was influenced by the presence of native mycorrhizal fungi and the dark septate endophytic fungi
Summary
Vetiver grass is a member of the grass family Poaceae. Its fast development is probably due to the interaction with native microbiota, whose influence has not been studied yet. The symbiotic relationship between the arbuscular mycorrhizal fungi and the plants may favor vegetative development in the plants This could be due to the greater area of contact with the soil as a result of the fungal hyphae, allowing more efficient water and nutrient absorption, or by the stimulating action of the fungi on root growth (VAN DER HEIJDEN et al, 2015). These authors state that the symbiotic association with mycorrhizal fungi can increase the phosphorus content in plants by over 90% through the action of the mycelium, which acts as a reserve of this element in the soil, mainly in natural low fertility environment. Arbuscular mycorrhizal fungi may contribute to the formation of fine roots and the release of glomalin, a protein substance responsible for aggregation of soil particles, which reduces soil losses due to erosion (SOUSA et al, 2012)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
