Affiliation:
1. Universidade Federal de Sergipe, Brazil
Abstract
ABSTRACT Paspalum millegrana grass is a member of the family Poaceae native to the Americas, whose interaction with native symbiotic fungi has not yet been reported. The objective of this study was to evaluate the interactions between the native microorganisms and arbuscular mycorrhizal fungi in the development of P. millegrana Schrad. The experimental design was completely randomized with seven treatments (control, without AMF; native microbial inoculant; native + UFLA05 Gigaspora albida; native + UFLA351 Rhizoglomus clarum; native + UFLA372 Claroideoglomus etunicatum; native + UFLA401 Acaulospora morrowiae, and a mix of all treatments). The substrate was autoclaved sand and coconut powder at 2:1, with eight repetitions. The variables analyzed were: mycorrhizal colonization, dark septate endophytic fungi colonization, number of mycorrhizal spores, dry shoot mass, dry root mass, root length and volume, number of tiller and mycorrhizal dependence. Mycorrhizal arbuscular fungi and dark septate endophytic fungi colonized P. millegrana. The sporulation of arbuscular mycorrhizal fungi associated with P. millegrana was influenced by mycorrhizal colonization, depending on the fungus-plant interaction. P. millegrana was responsive to native + UFLA05 and native + UFLA351. No correlation between tiller emergence and mycorrhizal colonization of P. millegrana was observed.
Subject
General Agricultural and Biological Sciences
Reference27 articles.
1. Water relations, drought and vesicular-arbuscular mycorrhizal symbiosis;AUGÉ R. M;Mycorrhiza,2001
2. Ecologia Microbiana;AZEVEDO J. L,1998
3. Phosphorus solubilization and uptake by dark septate fungi in fourwing saltbush, Atriplex canescens (Pursh) Nutt;BARROW J. R.;Journal of Arid Environments,2002
4. The superior re-sprouting perfomance of exotic grass species under different environmental conditions: the study case of Paspalum atratum (Swallen) and Urochloa brizantha (Hochst. Ex. A. Rich-Stapf.).;CARAMASCHI G. M. C. L.;Theoretical and Experimental Plant Physiology,2016
5. Fungos micorrízicos arbusculares como indicadores da recuperação de áreas degradadas no Nordeste do Brasil;CARNEIRO R. F. V.;Revista Ciência Agronômica,2012