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Arbuscular mycorrhizal soil infectivity and spores distribution across plantations of tropical, subtropical and exotic tree species: a case study from the forest reserve of B andia, S enegal
Author(s) -
Sene Godar,
Thiao Mansour,
Manga Anicet,
Kane Aboubacry,
SambaMbaye Ramatoulaye,
Mbaye Mame Samba,
Khasa Damase,
Sylla Samba Ndao
Publication year - 2012
Publication title -
african journal of ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.499
H-Index - 54
eISSN - 1365-2028
pISSN - 0141-6707
DOI - 10.1111/j.1365-2028.2011.01315.x
Subject(s) - biology , herbaceous plant , colonization , mycorrhiza , vegetation (pathology) , species richness , subtropics , spore , soil water , botany , glomus , symbiosis , agronomy , ecology , medicine , genetics , pathology , bacteria
Several fast‐growing and multipurpose trees such as exotic and valuable native species have been widely used in W est A frica to reverse the tendency of massive degradation of plant cover and restore soil productivity. Although benefic effects have been reported on soil stabilization, a lack of information about their impact on soil symbiotic microorganisms still remains. This investigation has been carried out in field trees of 28 years old in a forest reserve at B andia. To determine the mycorrhizal inoculum potential ( MIP ) of soils, a mycorrhizal bioassay was conducted using seedlings of Z ea mays L . Spores concentration, arbuscular mycorrhizal ( AM ) fungi morphotypes and mycorrhizal colonization of field plants were examined. Results showed that fungal communities were dominated in all samples by the genus G lomus . Nevertheless, the others genera G igaspora and S cutellospora occurred preferentially out of the plantations. The number and richness of spores as well as the MIP of soils were decreased in the tree plantations. Accordingly, the amount of annual herbaceous plants kept out of the tree plantations was much greater than those under the tree plantations. The colonization was higher in field root systems of herb plants in comparison with that of the tree plants. Comparisons allowed us to conclude that vegetation type modifies the AM fungal communities, and the results suggest further adoption of management practices that could improve or sustain the development of herbaceous layers and thus promote the AM fungal communities.