{"id":11635,"date":"2022-06-01T16:15:44","date_gmt":"2022-06-01T16:15:44","guid":{"rendered":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=11635"},"modified":"2024-02-21T08:54:00","modified_gmt":"2024-02-21T08:54:00","slug":"evolutionary-and-functional-studies-of-reproductive-mode-polymorphism-in-the-poplar-rust-fungus-melampsora-larici-populina-thesis-offer","status":"publish","type":"post","link":"https:\/\/mycor.iam.inrae.fr\/IAM\/?p=11635","title":{"rendered":"PhD position in evolutionary biology of asexual reproduction in poplar rust"},"content":{"rendered":"

This position has been filled!<\/strong><\/em><\/span><\/p>\n

Version fran\u00e7aise : voir plus bas.<\/p>\n

Thesis title<\/strong><\/p>\n

Evolutionary and functional studies of reproductive mode polymorphism in the poplar rust fungus, Melampsora larici-populina<\/em><\/p>\n

Advisors:<\/strong><\/p>\n

Pascal FREY (Senior scientist), main supervisor
\nFabien HALKETT (Senior scientist), co-supervisor
\nS\u00e9bastien DUPLESSIS (Senior scientist), co-supervisor<\/p>\n

Host laboratory<\/strong><\/p>\n

Tree – Microbe Interactions Department
\nINRAE \/ Universit\u00e9 de Lorraine
\nINRAE Grand Est Nancy research centre
\n54280 Champenoux<\/p>\n

https:\/\/mycor.iam.inrae.fr\/IAM\/<\/a><\/p>\n

Funding :<\/strong> University doctoral contract. Duration 3 years. Monthly net salary about \u20ac1600.<\/p>\n

Thesis summary<\/strong><\/p>\n

The variability of reproductive modes is a long-standing conundrum in evolutionary biology. Yet, it conditions the evolutionary trajectories of populations and the morphological or physiological characteristics of the individuals that compose them. The phytopathogenic fungus Melampsora larici-populina<\/em>, causing poplar rust, is particularly interesting for the study of the polymorphism of reproduction modes. Indeed, like most Pucciniales, this species presents a life cycle that alternates between an asexual multiplication phase and a sexual reproduction phase. Besides, we have demonstrated that lineages of the fungus do survive strictly asexually over decades. The thesis proposes to address the issue of variability in reproductive modes along three complementary axes:<\/p>\n

    \n
  1. An evolutionary ecology approach that will allow us to determine the geographical distribution of the asexual lineages of M. larici-populina<\/em> using population genetics.<\/li>\n
  2. A phenotypic approach that will aim to experimentally demonstrate the level of investment of asexual lineages in sexual reproduction.<\/li>\n
  3. A genomic and evolutionary transcriptomic approach that will aim to elucidate the functional basis of the cycle and to find the determinants of the variation of the sexual and asexual reproduction modes.<\/li>\n<\/ol>\n

    Application<\/strong><\/p>\n

    Send CV, cover letter and contact details of two referees to Pascal Frey (pascal.frey@inra.fr<\/a>) and Fabien Halkett (fabien.halkett@inrae.fr<\/a>) before June 28, 2022.<\/p>\n

    Required skills<\/strong><\/p>\n

    The candidate should have a Master degree in ecology, evolutionary biology and\/or population biology. He\/she should have skills in population genetics and\/or genomics and an interest in plant-microorganism interactions. A strong taste for teamwork is essential. Knowledge of French will be an asset but is not mandatory.<\/p>\n

    —————————————————————————————————<\/p>\n

    Titre du sujet de th\u00e8se\u00a0:<\/strong><\/p>\n

    \u00c9tudes \u00e9volutives et fonctionnelles de la variabilit\u00e9 des modes de reproduction chez le champignon responsable de la rouille du peuplier, Melampsora larici-populina<\/em>.<\/p>\n

    Encadrants :<\/strong><\/p>\n

    Pascal FREY (DR2, HDR), directeur de la th\u00e8se<\/p>\n

    Fabien HALKETT (CRCN), co-encadrant de la th\u00e8se<\/p>\n

    S\u00e9bastien Duplessis (DR2, HDR), co-encadrant de la th\u00e8se<\/p>\n

    Laboratoire d\u2019accueil :<\/strong><\/p>\n

    UMR Interactions Arbres \u2013 Microorganismes<\/p>\n

    INRAE\/Universit\u00e9 de Lorraine<\/p>\n

    Centre INRAE Grand Est Nancy<\/p>\n

    54280 Champenoux<\/p>\n

    https:\/\/mycor.iam.inrae.fr\/IAM\/<\/a><\/p>\n

    Universit\u00e9 d\u2019inscription de l\u2019\u00e9tudiant en th\u00e8se<\/strong>\u00a0: Universit\u00e9 de Lorraine<\/p>\n

    Financement\u00a0: <\/strong>Contrat doctoral universitaire, dur\u00e9e 3 ans, salaire net mensuel environ 1600\u20ac.<\/p>\n

    R\u00e9sum\u00e9 de la th\u00e8se<\/strong><\/p>\n

    La variabilit\u00e9 des modes de reproduction est une \u00e9nigme de longue date en biologie de l\u2019\u00e9volution. Or elle conditionne les trajectoires \u00e9volutives des populations et les caract\u00e9ristiques morphologiques ou physiologiques des individus qui la composent. Le champignon phytopathog\u00e8ne Melampsora larici-populina<\/em>, agent de la rouille du peuplier, est une esp\u00e8ce particuli\u00e8rement int\u00e9ressante pour l\u2019\u00e9tude du polymorphisme de des modes de reproduction. En effet, comme la plupart des Pucciniales, cette esp\u00e8ce pr\u00e9sente un cycle de vie qui alterne entre une phase de multiplication asexu\u00e9e et une phase de reproduction sexu\u00e9e. De plus, nous avons mis en \u00e9vidence l\u2019existence de lign\u00e9es strictement asexu\u00e9es du champignon. La th\u00e8se propose d\u2019aborder la question de la variabilit\u00e9 des modes de reproduction selon trois axes compl\u00e9mentaires\u00a0:<\/p>\n

      \n
    1. Une approche d\u2019\u00e9cologie \u00e9volutive qui permettra de d\u00e9terminer \u00e0 l\u2019aide des outils de la g\u00e9n\u00e9tique des populations la distribution g\u00e9ographique des lign\u00e9es asexu\u00e9es de M. larici-populina<\/em>.<\/li>\n
    2. Une approche ph\u00e9notypique qui visera \u00e0 d\u00e9montrer exp\u00e9rimentalement le niveau d\u2019investissement des lign\u00e9es asexu\u00e9es dans la reproduction sexu\u00e9e.<\/li>\n
    3. Une approche de g\u00e9nomique et de transcriptomique \u00e9volutive qui visera \u00e0 \u00e9lucider les bases fonctionnelles de la r\u00e9alisation du cycle et de trouver les d\u00e9terminants de la variation des modes de reproduction sexu\u00e9e et asexu\u00e9e.<\/li>\n<\/ol>\n

      Candidature :<\/strong><\/p>\n

      Envoyer un CV, une lettre de motivation et les coordonn\u00e9es de 2 personnes de r\u00e9f\u00e9rence \u00e0 Pascal Frey (pascal.frey@inra.fr<\/a>) et Fabien Halkett (fabien.halkett@inrae.fr<\/a>) avant le 28 juin 2022.<\/p>\n

      Comp\u00e9tences recherch\u00e9es<\/strong><\/p>\n

      Le(la) candidat(e) devra avoir une formation (Master) en \u00e9cologie, biologie \u00e9volutive et\/ou biologie des populations. Il(elle) devra avoir des comp\u00e9tences en g\u00e9n\u00e9tique des populations et\/ou en g\u00e9nomique et un int\u00e9r\u00eat pour les interactions plantes – microorganismes. Un go\u00fbt prononc\u00e9 pour le travail en \u00e9quipe est indispensable.<\/p>\n","protected":false},"excerpt":{"rendered":"

      This position has been filled! Version fran\u00e7aise : voir plus bas. Thesis title Evolutionary and functional studies of reproductive mode polymorphism in the poplar rust fungus, Melampsora larici-populina Advisors: Pascal FREY (Senior scientist), main supervisor Fabien HALKETT (Senior scientist), co-supervisor … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,1],"tags":[],"class_list":["post-11635","post","type-post","status-publish","format-standard","hentry","category-job","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts\/11635","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11635"}],"version-history":[{"count":0,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=\/wp\/v2\/posts\/11635\/revisions"}],"wp:attachment":[{"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mycor.iam.inrae.fr\/IAM\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}