@article{fdi:010060542,
  title = {{D}iversity patterns of indigenous arbuscular mycorrhizal fungi associated with rhizosphere of cowpea ({V}igna unguiculata ({L}.) {W}alp.) in {B}enin, {W}est {A}frica},
  author = {{J}ohnson, {J}. {M}. and {H}oungnandan, {P}. and {K}ane, {A}. and {S}anon, {K}. {B}. and {N}eyra, {M}arc},
  editor = {},
  language = {{ENG}},
  abstract = {{A}ssessment of diversity and understanding factors underlying species distribution are fundamental themes in ecology. {H}owever, the diversity of native arbuscular mycorrhizal fungi ({AMF}) species in {A}frican tropical agro-ecosystems remains weakly known. {T}his research was carried out to assess the morphological diversity of indigenous {AMF} species associated with rhizosphere of cowpea ({V}igna unguiculata ({L}) {W}alp.) in different agro-ecological zones ({AEZ}) of {B}enin and to examine the effects of soil chemical properties, climatic factors and agricultural practices on this diversity. {R}esults showed that, in {B}enin, cowpea was grown by farmers in very exhausted soils, where available phosphorus and potassium were deficient. {T}he indigenous {AMF} spore density was on average 202 spores per bog dry soil and there was no difference in the density among the agro-ecological zones ({P} = 0.56). {F}ifteen {AMF} morphospecies belonging to eight genera ({G}igaspora, {S}cutellospora, {R}acocetra, {A}caulospora, {F}unneliformis, {R}hizophagus, {G}lomus and {C}laroideoglomus) were detected. {T}he computed species richness estimators indicated that a limited number of additional undetected morphospecies are probably present in cowpea fields. {A}ccording to analysis of similarity ({ANOSIM}), the arbuscular mycorrhizas community composition of the {S}udanian zone and {G}uinean zone were not significantly different (r = -0.01; {P} = 0.517). {T}he diversity of {AMF} morphospecies in the fields was weak with prevalence of {G}lomeraceae (92%). {F}urthermore, {AMF} diversity and evenness indices were negatively correlated with annual rainfall ({P} < 0.01) and with available phosphorus ({P} < 0.05). {H}owever, no significant correlation was observed between {AMF} diversity indices and soil organic carbon. {U}ltimately, this study tends to confirm that soil management practices (tillage, soil disturbance) have negative effect on {AMF} diversity.},
  keywords = {{A}gro-ecological zones ; {B}enin ; {C}owpea ; {D}iversity ; {S}ymbiosis ; {BENIN}},
  booktitle = {},
  journal = {{P}edobiologia},
  volume = {56},
  numero = {3},
  pages = {121--128},
  ISSN = {0031-4056},
  year = {2013},
  DOI = {10.1016/j.pedobi.2013.03.003},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060542},
}