Claire M. M. Gachon

ORCID: 0000-0002-3702-7472
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About
Contact & Profiles
Research Areas
  • Marine and coastal plant biology
  • Microbial Community Ecology and Physiology
  • Protist diversity and phylogeny
  • Plant Pathogens and Resistance
  • Seaweed-derived Bioactive Compounds
  • Plant Pathogens and Fungal Diseases
  • Plant Disease Resistance and Genetics
  • Algal biology and biofuel production
  • Marine Biology and Ecology Research
  • Echinoderm biology and ecology
  • Marine Bivalve and Aquaculture Studies
  • Coral and Marine Ecosystems Studies
  • Genomics and Phylogenetic Studies
  • Plant-Microbe Interactions and Immunity
  • Marine and coastal ecosystems
  • Plant Gene Expression Analysis
  • Plant biochemistry and biosynthesis
  • Environmental DNA in Biodiversity Studies
  • Mycotoxins in Agriculture and Food
  • Coastal wetland ecosystem dynamics
  • Biocrusts and Microbial Ecology
  • Plant pathogens and resistance mechanisms
  • Bryophyte Studies and Records
  • Turfgrass Adaptation and Management
  • Plant and Fungal Interactions Research

Molécules de Communication et Adaptation des Micro-organismes
2020-2025

Centre National de la Recherche Scientifique
2004-2025

Scottish Association For Marine Science
2016-2025

Muséum national d'Histoire naturelle
2022-2025

Marine Institute
2014-2020

Pacific University
2017

Stanford University
2017

University of British Columbia
2017

University of Connecticut
2017

University of New Hampshire
2017

The genome of Ectocarpus, a model organism for brown algae, has been sequenced. Brown algae are complex photosynthetic organisms that have adapted to life in rocky coastal environments. Genome analysis sheds light on this adaptation and reveals an extended set light-harvesting pigment biosynthesis genes novel metabolic processes such as halide metabolism. Comparative genomic analyses highlight the likely importance family receptor kinases related molecules evolution multicellularity plants,...

10.1038/nature09016 article EN cc-by-nc-sa Nature 2010-06-01

Oomycete species occupy many different environments and ecological niches. The genera Phytophthora Pythium for example, contain plant pathogens which cause enormous damage to a wide range of species. Proper identification the level is critical first step in any investigation oomycetes, whether it research driven or compelled by need rapid accurate diagnostics during pathogen outbreak. use DNA oomycete well established, but barcoding with cytochrome c oxidase subunit I (COI) relatively new...

10.1111/j.1755-0998.2011.03041.x article EN Molecular Ecology Resources 2011-06-20

Abstract Background Pythium ultimum is a ubiquitous oomycete plant pathogen responsible for variety of diseases on broad range crop and ornamental species. Results The P. genome (42.8 Mb) encodes 15,290 genes has extensive sequence similarity synteny with related Phytophthora species, including the potato blight infestans . Whole transcriptome sequencing revealed expression 86% genes, detectable differential suites under abiotic stress in presence host. predicted proteome includes large...

10.1186/gb-2010-11-7-r73 article EN cc-by Genome biology 2010-07-13

Red seaweeds are key components of coastal ecosystems and economically important as food a source gelling agents, but their genes genomes have received little attention. Here we report the sequencing 105-Mbp genome florideophyte Chondrus crispus (Irish moss) annotation 9,606 genes. The features an unusual structure characterized by gene-dense regions surrounded repeat-rich dominated transposable elements. Despite its fairly large size, this shows typical compact genomes, e.g., on average...

10.1073/pnas.1221259110 article EN Proceedings of the National Academy of Sciences 2013-03-15

Significance Fossil evidence shows that red algae (Rhodophyta) are one of the most ancient multicellular lineages. Their ecological, evolutionary, and commercial importance notwithstanding, few algal nuclear genomes have been sequenced. Our analyses Porphyra umbilicalis genome provide insights into how this macrophyte thrives in stressful intertidal zone basis for its nutritional value as human food. Many novel traits (e.g., cytoskeletal organization, calcium signaling pathways) we find...

10.1073/pnas.1703088114 article EN Proceedings of the National Academy of Sciences 2017-07-17

Males and females often have marked phenotypic differences, the expression of these dissimilarities invariably involves sex differences in gene expression. Sex-biased has been well characterized animal species, where a high proportion genome may be differentially regulated males during development. Male-biased genes tend to evolve more rapidly than female-biased genes, implying strength selective forces acting on two sexes. Analyses sex-biased focused organisms that exhibit separate sexes...

10.1093/molbev/msv049 article EN cc-by Molecular Biology and Evolution 2015-02-27

In this paper, we address several issues related to seaweed domestication from an evolutionary and ecological perspective.We briefly cover the history of human interactions with assess importance pre-domestication processes.The various steps trajectory wild domesticated are discussed for five crop seaweeds (i.e.Saccharina japonica (kombu), Pyropia sp.(nori), Undaria pinnatifida (wakame), Gracilaria chilensis (pellilo) Kappaphycus sp.) evaluate their status.We show that resulted long-term...

10.1127/pip/2017/0066 article EN Perspectives in Phycology 2017-05-01

Host-microbe interactions play crucial roles in marine ecosystems. However, we still have very little understanding of the mechanisms that govern these relationships, evolutionary processes shape them, and their ecological consequences. The holobiont concept is a renewed paradigm biology can help to describe understand complex systems. It posits host its associated microbiota with which it interacts, form holobiont, be studied together as coherent biological functional unit biology, ecology,...

10.7717/peerj.10911 article EN cc-by PeerJ 2021-02-25

Societal Impact Statement Seaweed cultivation is the fastest‐growing aquaculture sector, with a demonstrable potential to drive development in some of poorest coastal populations worldwide. However, sustainable exploitation, fair access and equitable benefits from marine genetic resources, such as seaweeds have yet be fully realised. Patchy fundamental knowledge on diversity metabolic algae limits their exploitation; scant practical skills low investment breeding restricts germplasm...

10.1002/ppp3.10190 article EN cc-by Plants People Planet 2021-03-27

The genome sequencing of Arabidopsis (Arabidopsis thaliana) has revealed that secondary metabolism plant glycosyltransferases (UGTs) are encoded by an unexpectedly large multigenic family 120 members. Very little is known about their actual function in planta, particular during pathogen interactions. Among them, members the group D interest since they related to UGTs involved stress-inducible responses other species. We provide here a detailed analysis expression profiles this following...

10.1104/pp.105.067223 article EN PLANT PHYSIOLOGY 2005-11-24

Filamentous fungi asymptomatically colonise the inner tissues of macroalgae, yet their ecological roles remain largely underexplored. Here, we tested if metabolites produced by fungal endophytes might protect host against a phylogenetically broad spectrum protistan pathogens. Accordingly, cultivable four brown algal species were isolated and identified based on LSU SSU sequencing. The metabolomes for ability to reduce infection pathogens in model Ectocarpus siliculosus. most active effective...

10.3389/fmicb.2018.03161 article EN cc-by Frontiers in Microbiology 2018-12-21

The eucheumatoids Kappaphycus and Eucheuma are cultivated in tropical or subtropical regions for the production of carrageenan, a hydrocolloid widely used food cosmetic industries. alvarezii is highly valued economic crop Coral Triangle, with Philippines, Indonesia Malaysia ranked among largest producers. In absence measures to mitigate climate change, extreme events including heatwaves, typhoons, severe El Niño La Niña, expected increase frequency magnitude. This inadvertently brings...

10.1371/journal.pone.0239097 article EN cc-by PLoS ONE 2020-09-14

Brown algae are an important group of multicellular eukaryotes, phylogenetically distinct from both the animal and land plant lineages. Ectocarpus has emerged as a model organism to study diverse aspects brown algal biology, but this system currently lacks effective reverse genetics methodology analyse functions selected target genes. Here, we report that mutations at specific sites generated following introduction CRISPR-Cas9 ribonucleoproteins into cells, using either biolistics or...

10.1111/nph.17525 article EN New Phytologist 2021-06-02
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