@article{fdi:010091606,
  title = {{A}bsence of {G}igasporales and rarity of spores in a hot desert revealed by a multimethod approach},
  author = {{R}obin-{S}oriano, {A}. and {M}aurice, {K}. and {B}oivin, {S}. and {B}ourceret, {A}. and {L}aurent-{W}ebb, {L}. and {Y}oussef, {S}. and {N}espoulous, {J}. and {B}oussi{\`e}re, {I}. and {B}erder, {J}. and {D}amasio, {C}. and {V}incent, {B}. and {B}oukcim, {H}. and {D}ucousso, {M}. and {G}ros-{B}althazard, {M}uriel},
  editor = {},
  language = {{ENG}},
  abstract = {{H}ot deserts impose extreme conditions on plants growing in arid soils. {D}eserts are expanding due to climate change, thereby increasing the vulnerability of ecosystems and the need to preserve them. {A}rbuscular mycorrhizal fungi ({AMF})

improve plant fitness by enhancing plant water/nutrient uptake and stress tolerance. {H}owever, few studies have focused on {AMF} diversity and community composition in deserts, and the soil and land use parameters affecting them. {T}his study

aimed to comprehensively describe {AMF} ecological features in a 5,000 km2 arid hyperalkaline region in {A}l{U}la, {S}audi {A}rabia. {W}e used a multimethod approach to analyse over 1,000 soil and 300 plant root samples of various species encom-

passing agricultural, old agricultural, urban and natural ecosystems. {O}ur method involved metabarcoding using 18{S} and {ITS}2 markers, histological techniques for direct {AMF} colonization observation and soil spore extraction and observation.

{O}ur findings revealed a predominance of {AMF} taxa assigned to {G}lomeraceae, regardless of the local conditions, and an almost complete absence of {G}igasporales taxa. {L}and use had little effect on the {AMF} richness, diversity and community

composition, while soil texture, p{H} and substantial unexplained stochastic variance drove these compositions in {A}l{U}la soils. {M}ycorrhization was frequently observed in the studied plant species, even in usually non-mycorrhizal plant taxa (e.g.

{A}maranthaceae, {U}rticaceae). {D}ate palms and {C}itrus trees, representing two major crops in the region, however, displayed a very low mycorrhizal frequency and intensity. {A}l{U}la soils had a very low concentration of spores, which were mostly

small. {T}his study generated new insight on {AMF} and specific behavioral features of these fungi in arid environments.},
  keywords = {{ARABIE} {SAOUDITE} ; {ZONE} {ARIDE} ; {AL} {ULA}},
  booktitle = {},
  journal = {{M}ycorrhiza},
  volume = {34},
  numero = {4},
  pages = {251--270},
  ISSN = {0940-6360},
  year = {2024},
  DOI = {10.1007/s00572-024-01160-w},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091606},
}