News

Period
article

02 April 2025

By: Com

Publications 2024

Liste des publications 2024 de l'ensemble des laboratoires composant la FR AIB (IF 2023). Éléments collectés et consolidés par Solange Cassette, documentaliste à la fédération. Publications list in 2024 of all members of FR AIB laboratories (IF 2023). Items collected and consolidated by Solange Cassette, library ressources manager.
Bandeau appel à projet
article

03 July 2024

By: Com

Call 2024 is now open for young scientists and inter-units

For this 2024 edition, the Research Federation is launching two calls for projects: the first for inter-unit projects and the second for projects by young scientists (PhD students, post-docs and engineers on fixed-term contracts).
Publications année 2023
article

29 April 2024

By: Com

Publications list in 2023

Publications list in 2023 of all members of FR AIB laboratories (IF 2021). Items collected and consolidated by Solange Cassette, library ressources manager.
bandeau K Sohn
event

08 February 2024

11am - Lynn Margulis seminar room (PABS-B)

K. SOHN - Mechanisms by which convergently evolved NLRs recognize pathogen effectors in plants

Keehoon Sohn leads the group « plant immunity » at the Seoul National University. He will present his work on 8th February at 11am in the Lynn Margulis seminar room (PABS-B).
article

07 November 2023

By: Com

Publications 1er semestre 2023

Liste des publications du 1er semestre 2023 de l'ensemble des laboratoires composant la FR AIB (IF 2021). Éléments collectés et consolidés par Solange Cassette, documentaliste à la fédération. <em>Publications list for the first semester of 2023 of all members of FR AIB laboratories (IF 2021). Items collected and consolidated by Solange Cassette, library ressources manager.</em>
event

19 September 2023

Lynn Margulis auditorium - AgroBiosciences building - Auzeville-Tolosane

Forum 2023: LabEx TULIP / FR AIB

The FR AIB and LabEx TULIP jointly organise their annual forum on October 12 and 13 in the brand-new Agrobiosciences building. The first half-day will focus on the FRAIB environment, with an overview of the technological facilities, followed by Young Scientists talks, granted in 2022. During the following afternoon and Friday, TULIP LabEx will present a program combining presentations by its members and international guests.
bandeau appel à projet 2023
article

31 August 2023

By: Com

Call 2023 is now open

Two distinct projects can be submitted. The first call concerns projects led by researchers from at least two different laboratories from the FR AIB. The second call concerns young scientists (PhD students, post-docs, engineers on fixed-term contracts).
Camille Parmesan
article

07 July 2023

By: Solange Cassette

Camille Parmesan: From passion for butterflies to climate change expertise

The current Director of SETE, Camille Parmesan, shares her enthusiasm for science, her passion for butterflies and her commitment to climate. This portrait shows her vitality, clairvoyance and combative spirit that are as many remedies to solastalgia*.
Olives (JP Roger)
article

06 June 2023

By: G Esteve

The complex history of the olive tree

The location and timing of domestication of the olive tree, a key crop in Early Mediterranean societies, remain hotly debated. Here, reseachers unravel the history of wild olives (oleasters), and then infer the primary origins of the domesticated olive.
Nodule
article

06 June 2023

By: GE

Experimental evolution of nodule intracellular infection in legume symbionts

Soil bacteria known as rhizobia are able to establish an endosymbiosis with legumes that takes place in neoformed nodules in which intracellularly hosted bacteria fix nitrogen. Intracellular accommodation that facilitates nutrient exchange between the two partners and protects bacteria from plant defense reactions has been a major evolutionary step towards mutualism. Yet the forces that drove the selection of the late event of intracellular infection during rhizobium evolution are unknown.
vignette debelle
article

06 June 2023

By: GE

Genome of model legume Medicago truncatula sequenced

Dans le cadre d'un consortium international, des chercheurs du LIPM (INRA-CNRS), en collaboration avec le Génoscope (CEA- Institut de Génomique) sont parvenus à séquencer le génome d’une légumineuse modèle proche du pois ou de la luzerne cultivée : Medicago truncatula. Le séquençage de son génome donne accès aux gènes d'intérêt potentiellement utilisables pour d'autres cultures. Cette légumineuse a en effet une capacité intéressante, elle fixe, grâce à une symbiose avec des bactéries, l’azote présent dans l’atmosphère. Elle ne requiert donc pas, contrairement à beaucoup de ses semblables, d’intrants... Une recherche qui, transférée à d’autres espèces, ouvre la voie à une agriculture plus respectueuse de l’environnement.
vignette stevens
article

06 June 2023

By: GE

How is dispersal integrated in life histories: a quantitative analysis using butterflies

As dispersal plays a key role in gene flow among populations, its evolutionary dynamics under environmental changes is particularly important. The inter-dependency of dispersal with other life history traits may constrain dispersal evolution, and lead to the indirect selection of other traits as a by-product of this inter-dependency.
Flies
article

06 June 2023

By: GE

Beyond DNA: integrating inclusive inheritance into an extended theory of evolution

Current evolutionary approaches reduce heredity to the sole genes. However, evidence is accruing that various forms of non-genetic information are transmitted across generations and thus participate to evolution. In a paper published in Nature Reviews Genetics, an international team encompassing three members of the federation de Recherche 3450 (EDB, UMR 5174 CNRS-Université Paul Sabatier-ENFA and “SEEM, USR 2936 CNRS) call for a more inclusive paradigm integrating all forms of non-genetic heredity into a single theory of evolution. It is the party taken by the TULIP Labex project to which three of the authors take part.
Vignette medicago
article

06 June 2023

By: GE

A switch in Ca2+ spiking signature is concomitant with endosymbiotic microbe entry into cortical root cells of Medicago truncatula

During the initial stages of root colonization by either nitrogen-fixing rhizobia or arbuscular mycorrhizal (AM) fungi, the microsymbionts traverse outer root tissues within specialized intracellular compartments of plant origin, thus avoiding direct contact with the host cytoplasm and the activation of defence responses. In order to study the mechanisms underlying this unique form of transcellular infection we have developed in vivo experimental approaches based on confocal microscopy for the model legume Medicago truncatula with the objective of monitoring host cellular dynamics and associated intracellular signaling.
vignette feve cacao
article

06 June 2023

By: GE

The genome of Theobroma cacao

The bioinformatics team of LIPM led by J. Gouzy has contributed the annotation of the genome of Theobroma cacao, an economically important tropical-fruit tree crop that is the source of chocolate.
vignette medicago
article

06 June 2023

By: GE

CML9, an Arabidopsis calmodulin-like protein, contributes to plant innate immunity through a flagellin-dependent signalling pathway

Comment les plantes perçoivent-elles leur environnement ? Certes, elles n’ont pas d’yeux ou de système nerveux mais n’en sont pas moins dénuées de systèmes de perception… Grâce à des senseurs, elles parviennent à s’informer mais aussi à répondre aux contraintes auxquelles elles sont confrontées, qu’il s’agisse d’une sècheresse comme de l’agression par des bactéries. Une équipe du LRSV (UPS / CNRS) dans laquelle travaille Didier Aldon vient d’identifier un nouvel acteur permettant aux plantes de mieux se défendre vis-à-vis d’agents pathogènes.
vignette bacteria
article

06 June 2023

By: GE

Nucleo-cytoplasmic basal resistance regulator EDS1 connects pathogen effector recognition to cell compartment-specific immune responses

Bacterial typeIII effectors are recognized by plant intracellular nucleotide binding–leucine-rich repeat (NB-LRR) receptors. So far, processes linking activation of these receptors to downstream defense responses remain elusive.
Vignette bird
article

06 June 2023

By: GE

Hybridization and barriers to gene flow in an island bird radiation

While reinforcement may play a role in all major modes of speciation, relatively little is known about the timescale over which species hybridize without evolving complete reproductive isolation. Birds have high potential for hybridization, and islands provide simple settings for uncovering speciation and hybridization patterns. Here we develop a phylogenetic hypothesis for a phenotypically diverse radiation of finch-like weaver-birds (Foudia) endemic to the western Indian Ocean islands.
vignette racine nodosité Infection épidermique
article

06 June 2023

By: GE

Plant-activated Bacterial Receptor Adenylate Cyclases Modulate Epidermal Infection in the Sinorhizobium meliloti-Medicago Symbiosis

Legumes and soil bacteria called rhizobia have co-evolved a facultative nitrogen-fixing symbiosis. Establishment of the symbiosis requires bacterial entry via root hair infection threads (ITs) and, in parallel, organogenesis of nodules that are subsequently invaded by bacteria. Tight control of nodulation and infection is required to maintain the mutualistic character of the interaction. Available evidence supports a passive bacterial role in nodulation and infection, after the microsymbiont has triggered the symbiotic plant developmental program.
Hirondelle à front blanc
article

06 June 2023

By: G Esteve

Avoiding pitfalls in estimating heritability with the common options approach

Heritability (i.e. the heredity of differences) is a central parameter of evolutionary sciences, as evolution by natural selection or drift can only occur in traits that are heritable. However, in many circumstances, heritability estimates are subject to two potentially interacting pitfalls: the spatial and the regression to the mean (RTM) fallacies. The spatial fallacy occurs when the set of potential movement options differs among individuals according to where individuals depart.
article

06 June 2023

By: G. Esteve

An integrated analysis of plant and bacterial gene expression in symbiotic root nodules using laser-capture microdissection coupled to RNA sequencing

Rhizobium-induced root nodules are specialized organs for symbiotic nitrogen fixation. Indeterminate-type nodules are formed from an apical meristem and exhibit a spatial zonation which corresponds to successive developmental stages. To get a dynamic and integrated view of plant and bacterial gene expression associated with nodule development, we used a sensitive and comprehensive approach based upon oriented high-depth RNA sequencing coupled to laser microdissection of nodule regions.
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