Latest publications

Canteloupe melon

Cantaloupe melon genome reveals 3D chromatin features and structural relationship with the ancestral Cucurbitaceae karyotype.

Clement Pichot, Anis Djari, Joseph Tran, Marion Verdenaud, William Marande, Cecile Huneau, Veronique Gautier, David Latrasse, Sandrine Arribat, Vivien Sommard, Christelle Troadec, Charles Poncet, Mohammed Bendahmane, Judit Szecsi, Catherine Dogimont, Jerome Salse, Moussa Benhamed, Mohamed Zouine, Adnane Boualem, Abdelhafid Bendahmane.

Added on : 04 January 2022

Read more

Journal: IScience

https://doi.org/10.1016/j.isci.2021.1036

 

Abstract

Cucumis melo displays a large diversity of horticultural groups with Cantaloupe melon the most cultivated type. Using a combination of single-molecule sequencing, 10X Genomics link-reads, high-density optical and genetic maps and chromosome conformation capture (Hi-C) we assembled a chromosome scale C.melo var. cantalupensis Charentais mono genome. Integration of RNA-seq, MeDip-seq, ChIP-seq and Hi-C data revealed a widespread compartmentalization of the melon genome, segregating constitutive heterochromatin and euchromatin. Genome-wide comparative and evolutionary analysis between melon botanical groups identified Charentais mono genome increasingly more divergent from Harukei-3 (reticulatus), Payzawat (inodorus), and HS (ssp. agrestis) genomes. To assess the paleohistory of the Cucurbitaceae, we reconstructed the ancestral Cucurbitaceae karyotype and compared it to sequenced cucurbit genomes. In contrast to other species that experienced massive chromosome shuffling, melon has retained the ancestral genome structure. We provide comprehensive genomic resources and new insights in the diversity of melon horticultural groups and evolution of cucurbits.

cyrille syntenac publication

A wheat cysteine-rich receptor-like kinase confers broad-spectrum resistance against Septoria tritici blotch

Cyrille Saintenac, Florence Cambon, Lamia Aouini, Els Verstappen, Seyed Mahmoud Tabib Ghaffary, Théo Poucet, William Marande, Hélène Berges, Steven Xu, Maëlle Jaouannet, Bruno Favery, Julien Alassimone, Andrea Sánchez-Vallet, Justin Faris, Gert Kema, Oliver Robert & Thierry Langin

Nature Communications volume 12, Article number: 433 (2021)

Added on : 20 January 2021

Read more

The poverty of disease resistance gene reservoirs limits the breeding of crops for durable resistance against evolutionary dynamic pathogens. Zymoseptoria tritici which causes Septoria tritici blotch (STB), represents one of the most genetically diverse and devastating wheat pathogens worldwide. No fully virulent Z. tritici isolates against synthetic wheats carrying the major resistant gene Stb16q have been identified. Here, we use comparative genomics, mutagenesis and complementation to identify Stb16q, which confers broad-spectrum resistance against Z. tritici. The Stb16q gene encodes a plasma membrane cysteine-rich receptor-like kinase that was recently introduced into cultivated wheat and which considerably slows penetration and intercellular growth of the pathogen.

INRAE press release