@article{fdi:010064669,
  title = {{I}nfluence of tropical leaf litter on nitrogen mineralization and community structure of ammonia-oxidizing bacteria},
  author = {{D}iallo, {M}. {D}. and {G}uisse, {A}. and {S}all, {S}. {N}. and {D}ick, {R}. {P}. and {A}ssigbets{\'e}, {K}omi and {D}ieng, {A}. {L}. and {C}hotte, {J}ean-{L}uc},
  editor = {},
  language = {{ENG}},
  abstract = {{D}escription of the subject: {T}he present study concerns the relationships among leaf litter decomposition, substrate quality, ammonia-oxidizing bacteria ({AOB}) community composition and nitrogen ({N}) availability. {D}ecomposition of organic matter affects the biogeochemical cycling of carbon ({C}) and {N}. {S}ince the composition of the soil microbial community can alter the physiological capacity of the community, it is timely to study the litter quality effect on {N} dynamic in ecosystems. {O}bjectives. {T}he aim of this study was to determine the influence of leaf litter decomposition on {N} mineralization. {T}he specific objectives of this study were to evaluate the influence of the litter biochemistry of five plants species ({F}aidherbia albida {A}.{C}hev., {A}zadirachta indica {A}.{J}uss., {C}asuarina equisetifolia {L}., {A}ndropogon gayanus {K}unth and {E}ragrostis tremula {H}ochst. ex {S}teud.) on {N} mineralization in a tropical ferrous soil ({L}ixisol), nitrification, and genetic diversity of ammonia-oxidizing bacteria. {D}enaturing gradient gel electrophoresis ({DGGE}) of amplified fragments of genes coding for 16{S} r{RNA} was used to study the development of bacterial communities during decomposition of leaf litter in soils. {M}ethod. {C}ommunity structure of {AOB} was determined at two time periods: day 0 and day 140. {T}en strains were tested and each of these strains produced a single band. {T}hus, {DGGE} {DNA} band patterns were used to estimate bacterial diversity. {P}lant secondary compounds such as polyphenols are purported to influence nutrient cycling by affecting organic matter degradation, mineralization rates, {N} availability and humus formation. {I}n a laboratory study, we investigated the influence of six phenolic acids (ferulic, gallic, vanillic, syringic, p-coumaric and p-{HBA} acids) commonly found in the plant residues on {N} mineralization and {NH}4+ and {NO}3- production in soils. {R}esults. {T}he results showed that litter type did affect soil nitrification. {F}aidherbia albida litter was associated with increased inorganic {N} in soil after 140 days of incubation while {A}. gayanus and {C}. equisetifolia litter immobilized {N}. {A}zadirachta indica and {E}. tremula amendments had no significant effects in {N} mineralization. {T}he results show that the addition of six phenolic acids significantly reduced {NH}4+ and {NO}3- compared to the control soil but had no significant effect on {N} mineralization. {F}or the community of ammonium-oxidizing bacteria, a litter quality effect was noted, but the incubation time effect was more pronounced, except for {C}. equisetifolia litter. {C}onclusions. {R}esults confirmed that the {N} mineralization changed with litter type under controlled conditions and the genetic structure of {AOB} is highly dependent on litter quality.},
  keywords = {{A}llelopathy ; phenolic acids ; inhibition ; plant litter ; nitrification ; {PCR} ; gel electrophoresis ; {SENEGAL}},
  booktitle = {},
  journal = {{B}iotechnologie {A}gronomie {S}oci{\'e}t{\'e} et {E}nvironnement},
  volume = {19},
  numero = {2},
  pages = {173--183},
  ISSN = {1370-6233},
  year = {2015},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064669},
}