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he Linkages between Plant Species Composition and Soil Microbial Communities: What about Symbiotic Microorganisms within Man- Made Tree Plantations

Man-made forest systems are usually focused upon the trees and are defined mainly in relation to their capacity to produce timber and prevent catastrophic events such as damage by wind. In recent years, however, there has been a growing awareness amongst plant ecologists and soil microbial ecologists that understanding the connectivity between their study organisms is of utmost importance. The interactions between plants and soil microorganisms are particularly important because plants represent the main pathway through which carbon, the element that severely limits microbial growth, enters into soil. From a reciprocal viewpoint, microbial associations have been pointed as an important strategy to guarantee plant survival under semiarid conditions. However, there are several recent studies that have been carried out on the devastating ecological impact resulting from anthropogenic dispersal of exotic plants. Given the growing body of empirical evidence of the importance of these perennial plants, it is becoming increasingly important to understand the impacts of such dispersal of man-made forestry on soil biological properties. In the first part of this review paper, the focus is on soil symbiotic microorganisms as means of improving nutrient uptakes in trees. We exposed the role of these microbial communities in both stimulating plant productivity and facilitating the resilience of ecosystems when faced with environmental disturbance. In the second part of the review, we will expose and discuss some of the relevant research works that have been implemented in Sub-saharian ecosystems with special emphasis on studies that have dealt with tree plantation impacts on soil microbial communities. Particularly, we discussed here the influences of tree-herb interactions on the soil rhizobial and mycorrhizal fungal communities.


Auteur(s) : SENE G., THIAO M., MBAYE M.S., NDIR M.S, SAMBA-MBAYE R., SOW T.D, KANE A. AND SYLLA S.N
Année de publication : 2014
Revue : J Biodivers Manage Forestry
N° de volume : 3:4
Type : Article
Mise en ligne par : MBAYE Mame Samba