Acessibilidade / Reportar erro

Role of autoctone community of arbuscular mycorrhizal fungi (AMF) on the development of native plant species in revegetated restinga dunes from coastal region of Paraíba State

Association of arbuscular mycorrhizal fungi (AMF) and plant roots constituted one of the most important ways to mitigate the impact of disturbed area. The aim of this work was to characterize the AMF community in the soil from revegetated dune area and to analyze its influence on the native plant development. Soils were collected in rainfall season in the revegetated area. Glomalin-related soil protein production (GRSP), glomerospores density and diversity were evaluated. The influence of AMF autoctone community was determined for two native plants: Tabebuia roseo-alba (Ridl.) Sandw. (peroba) and Tocoyena selloana Schum. (jenipapo-bravo). Experimental design for each species was completely randomized with 10 replicates, two treatment - native soil (SN) and disinfested native soil (SND) - were tested. Parameters evaluated were: height, shoot diameter, leaf number and area, shoot and root dry mass, nutrient contents, glomerospore density, mycorrhizal colonization and glomalin-related soil protein production (GRSP). In dune revegetated soil was found 1 glomerospore g-1 soil and 1.20 ± 0.04 mg GRSP g-1 soil, and six AMF species were identified. Native soil promoted more development to plant and fungi. Mycorrhizal colonization in peroba was 80% and in jenipapo-bravo 60%. Then, AMF are present in revegetated area after mining contributing to growth of native plant species studied in greenhouse conditions, suggesting that their performance is affected by arbuscular mycorrhiza symbiosis.

arbuscular mycorrhiza; native plant species; restinga


Sociedade Botânica de São Paulo Caixa Postal 57088, 04089-972 São Paulo SP - Brasil, Tel.: (55 11) 5584-6300 - ext. 225, Fax: (55 11) 577.3678 - São Paulo - SP - Brazil
E-mail: brazbot@gmail.com