A5007318083- Mycorrhizal Fungi and Plant Interactions
- Plant Pathogens and Fungal Diseases
- Forest Ecology and Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Soil Carbon and Nitrogen Dynamics
- Yeasts and Rust Fungi Studies
- Microbial Community Ecology and Physiology
- Fungal Infections and Studies
- Genomics and Phylogenetic Studies
- Plant Diversity and Evolution
- Environmental DNA in Biodiversity Studies
- Lichen and fungal ecology
- Agronomic Practices and Intercropping Systems
- Nail Diseases and Treatments
- Coastal wetland ecosystem dynamics
- Mining and Resource Management
- Plant Disease Resistance and Genetics
- Soil erosion and sediment transport
- Heavy metals in environment
- Soil Management and Crop Yield
- Mollusks and Parasites Studies
- Plant and Fungal Species Descriptions
- Tree Root and Stability Studies
- Forest Insect Ecology and Management
- Plant and fungal interactions
University of New Caledonia
2012-2025
L'Institut Agro
2016-2023
IAC (United States)
2016-2023
BP (United Kingdom)
2023
The University of Sydney
2010-2014
Westmead Hospital
2010-2014
Centre National de la Recherche Scientifique
2005-2010
Laboratoire Evolution et Diversite Biologique
2006-2010
Université Toulouse III - Paul Sabatier
2005-2010
Université de Toulouse
2010
Soil health and One Health are global concerns, necessitating the development of refined indicators for effective monitoring. In response, we present Anaconda R Package, a novel tool designed to enhance analysis eDNA data biomonitoring purposes. Employing combination different approaches, this package allows comprehensive investigation species abundance community composition under diverse conditions. This study applied examine impact two types duration fire-fallow cropping systems, using...
ABSTRACT The emergence of distinct populations Cryptococcus gattii in the temperate North American Pacific Northwest (PNW) was surprising, as this species previously thought to be confined tropical and semitropical regions. Beyond a new habitat niche, dominant emergent population displayed increased virulence caused primary pulmonary disease, opposed predominantly neurologic disease seen elsewhere. Whole-genome sequencing performed on 118 C. isolates, including PNW subtypes global diversity...
PCR fingerprinting and multilocus sequence typing were applied to determine the major molecular types of Cryptococcus neoformans/Cryptococcus gattii species complex in Republic Korea. Of 78 strains isolated from patients diagnosed with cryptococcosis between 1990 2008, 96% C. neoformans serotype A, mating type MATα VNI. The remaining 4% gattii, B, either VGIIb or VGIII. 62 known HIV status, only 14 (22.6%) HIV-positive belonged Remarkably, 93% isolates had identical fingerprint profiles VNIc...
Background Cryptococcus gattii is a basidiomycetous yeast that causes life-threatening disease in humans and animals. Within C. gattii, four molecular types are recognized (VGI to VGIV). The Australian VGII population has been the spotlight since 2005, when it was suggested as possible origin for ongoing outbreak at Vancouver Island (British Columbia, Canada), with same-sex mating being driving force behind emergence of this outbreak, nowadays hypothesized widespread phenomenon gattii....
Soil microorganisms play key roles in ecosystem functioning and are known to be influenced by biotic abiotic factors, such as plant cover or edaphic parameters. New Caledonia, a biodiversity hotspot located the southwest Pacific, is one-third covered ultramafic substrates. These types of soils notably characterised low nutrient content high heavy metal concentrations. Ultramafic outcrops harbour diverse vegetation remarkable diversity. In this study, we aimed assess soil bacterial fungal...
Abstract Population studies have revealed that the fungal ectomycorrhizal morphospecies Tricholoma scalpturatum consists of at least two genetically distinct groups occur sympatrically in several geographical areas. This discovery prompted us to examine species boundaries and relationships between members formerly assigned T. allied taxa using phylogenetic analyses. Sequence data were obtained from three nuclear DNA regions [internal transcribed spacer (ITS), gpd tef ], 101 carpophores...
The biogeography of neotropical fungi remains poorly understood. Here, we reconstruct the origins and diversification lineages in one largest clades ectomycorrhizal globally widespread family Russulaceae. We inferred a supertree 3285 operational taxonomic units, representing worldwide internal transcribed spacer sequences. reconstructed biogeographic history identified Neotropics adjacent Patagonia. Russulaceae have tropical African origin. oldest South America, most with sister groups, date...
Fungi combine sexual reproduction and clonal propagation. The balance between these two reproductive modes affects establishment dynamics, ultimately the evolutionary potential of populations. pattern colonization was studied in species ectomycorrhizal fungi: Tricholoma populinum scalpturatum. former is considered to be a host specialist whereas T. scalpturatum generalist taxon. Fruit bodies both basidiomycete were mapped collected over several years from black poplar (Populus nigra) stand,...
Summary Myrtle rust, caused by the fungus Austropuccinia psidii , infects a wide range of host species within Myrtaceae family worldwide. Since its first report in 2013 from New Caledonia, extent range, geographical distribution and genetic diversity A. this territory have been unknown. This study reports 67 new distributed 13 different genera, including five genera. The pathogen was found various types plant communities, where are dominant or codominant species, as well several nurseries....
Dispersal and establishment are fundamental processes influencing the response of species to environmental changes, long-term persistence populations. A previous study on symbiotic ectomycorrhizal fungus Tricholoma scalpturatum revealed strong genetic differentiations between populations in Western Europe, suggesting restricted dispersal for this wind-dispersed cosmopolitan fungus. Two distinct groups (genetic 1 2), co-occurring some locations, were also identified could correspond cryptic...
Microbial species richness and assemblages across ultramafic ecosystems were investigated to assess the relationship between their distributional patterns environmental traits. The structure of microorganism communities in Koniambo massif, New Caledonia, was using a metagenetic approach correlated with edaphic floristic factors. Vegetation cover soil properties significantly shaped large phylogenetic distribution operational taxonomic unit within microbial populations, mean per habitat 3.477...
Abstract The fungus Pisolithus albus forms ectomycorrhizal (ECM) associations with plants growing on extreme ultramafic soils, which are naturally rich in heavy metals such as nickel. Both nickel‐tolerant and nickel‐sensitive isolates of P. found soils New Caledonia, a biodiversity hotspot the Southwest Pacific. aim this work was to monitor expression genes involved specific molecular response nickel isolate. We used pyrosequencing quantitative polymerase chain reaction (qPCR) approaches...
Due to their central role in ecosystems functioning and ability rapidly respond environmental changes, soil microorganisms could potentially be used for monitoring recovery the context of degraded land restoration. However, these belowground organisms have been, date, largely neglected. Here, we investigated fungal bacterial community diversity, composition, structure from ultramafic soils New Caledonia, an archipelago southwest Pacific recognized as a priority conservation The emerging...
The myrtle rust disease, caused by the fungus Austropuccinia psidii, infects a wide range of host species within Myrtaceae family worldwide. Since its first report in 2013 New Caledonia, it was found on various types native environments where are dominant or codominant species, as well several commercial nurseries. It is now considered significant threat to ecosystems biodiversity and Myrtaceae-related economy. use predictive molecular markers for resistance against currently most...
Mechanisms leading to monodominance in rainforests are still commonly discussed within the framework of forest succession. Here, we focused on comparison two monodominant species, Arillastrum gummiferum (Myrtaceae) and Nothofagus aequilateralis (Nothofagaceae), try better understand underlying ecological mechanisms. Those species known dominate upper canopy some ultramafic substrates New Caledonia. We investigated structure, diversity composition Arillastrum-dominated plots compared them...