@article{fdi:010062449, title = {{R}ole of allophanes in the accumulation of glomalin-related soil protein in tropical soils ({M}artinique, {F}rench {W}est {I}ndies)}, author = {{W}oignier, {T}hierry and {E}tcheverria, {P}. and {B}orie, {F}. and {Q}uiquampoix, {H}. and {S}taunton, {S}.}, editor = {}, language = {{ENG}}, abstract = {{T}hermo-stable, operationally defined soil protein, known as glomalin, may make an important contribution to carbon storage in soils. {T}he term glomalin is used because this putative protein, or group of proteins, was originally thought to be produced only by {G}lomus fungi. {T}here is currently little information on the glomalin-related soil protein ({GRSP}) content of tropical soils, particularly allophanic soils that are known to have different carbon dynamics to temperate climate soils. {W}e have measured the {B}radford-reactive {GRSP} content of soils sampled from forests and grasslands on the tropical island of {M}artinique and compared the observations with soil composition. {T}wo operationally defined fractions of {GRSP} were measured, namely easily-extractable and total {GRSP}. {T}he contents of {GRSP} in moist soils were in the range of 2-36 g kg(-1), accounting for about 8% of soil organic carbon, and were greater in topsoils than in corresponding subsoils. {B}oth the {GRSP} contents and the fraction of soil organic carbon attributed to {GRSP} were greater than those reported for temperate climate soils. {B}oth total and easily extractable {GRSP} contents were positively correlated to soil organic carbon content. {T}he fraction of soil organic carbon that could be attributed to soil protein decreased with increasing allophane content for allophanic soils. {N}o other trends of {GRSP} content with soil properties or land use were found. {GRSP} extraction was decreased about seven-fold by air-drying of soils, confirming the irreversible change in the soil microstructure of allophanic soils. {T}otal and easily extractable {GRSP} were correlated and we conclude that both are good probes of thermo-stable soil protein content for these soils. {N}o attempt was made to verify the fungal origin of the protein detected.}, keywords = {{MARTINIQUE}}, booktitle = {}, journal = {{E}uropean {J}ournal of {S}oil {S}cience}, volume = {65}, numero = {4}, pages = {531--538}, ISSN = {1351-0754}, year = {2014}, DOI = {10.1111/ejss.12151}, URL = {https://www.documentation.ird.fr/hor/fdi:010062449}, }