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vol.15 issue1Floristic and phenological study of zoochoric species of Semideciduous Seasonal Forest remnants in the mid-west region of Parana State, BrazilFormation of reserve substances during the development of annatto, Bixa orellana L. - Bixaceae, seeds author indexsubject indexarticles search
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Acta Botanica Brasilica

Print version ISSN 0102-3306On-line version ISSN 1677-941X


CARRENHO, Rosilaine; TRUFEM, Sandra F. B.  and  BONONI, Vera L. R.. Arbuscular mycorrhizal fungi in rhizospheres of three phytobionts established in a revegetated riparian area. Acta bot. bras. [online]. 2001, vol.15, n.1, pp.115-124. ISSN 1677-941X.

To evaluate the specific composition of arbuscular mycorrhizal fungi (AMF) established in recomposed areas of gallery forest, samples of rhizospheric soil were collected from Croton urucurana Baill., Inga striata Willd. and Genipa americana L. These plants are indigenous in gallery forests, being the first considered as pioneer, the second as early secondary and G. americana as climax, according to the successional stages. Twenty-two species of AMF were identified. The highest richness was observed in rhizospheres of C. urucurana and I. striata (15 species), while the highest number of spores occurred in G. americana rhizospheres (511 spores/100g dry soil). Glomus showed the highest number of species (10), followed by Acaulospora (6), Scutellospora (4), Gigaspora and Entrophospora (each with one species). The most frequent species in Croton was G. macrocarpum Tul. & Tul.; in Inga, E. kentinensis Wu & Liu, G. etunicatum Becker & Gerd. and G. macrocarpum; and in Genipa, G. claroideum Schenck & Smith, G. etunicatum, G. macrocarpum and G. occultum Walker. We concluded that the number of spores increases with the successional stages; conversely, the indices of diversity, richness and equability diminish in the rhizosphere of climax plants.

Keywords : Glomales; gallery forest; revegetation; seral stage.

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