Titre :

PT-Flax (phenotyping and TILLinG of flax): development of a flax (Linum usitatissimum L.) mutant population and TILLinG platform for forward and reverse genetics

Auteur(s) :

Chantreau, Maxime [Auteur]
Stress Abiotiques et Différenciation des Végétaux Cultivés [SADV]
Université de Lille, Sciences et Technologies
Grec, Sebastien [Auteur]
Stress Abiotiques et Différenciation des Végétaux Cultivés [SADV]
Université de Lille, Sciences et Technologies
Gutierrez, Laurent [Auteur]
Université de Picardie Jules Verne [UPJV]
Dalmais, Marion [Auteur]
Unité de recherche en génomique végétale [URGV]
Pineau, Christophe [Auteur]
Demailly, Hervé [Auteur]
Université de Picardie Jules Verne [UPJV]
Paysant-Leroux, Christine [Auteur]
Tavernier, Reynald [Auteur]
Trouvé, Jean-Paul [Auteur]
Chatterjee, Manash [Auteur]
National University of Ireland [Galway] [NUI Galway]
Guillot, Xavier [Auteur]
Brunaud, Véronique [Auteur]
Unité de recherche en génomique végétale [URGV]
Chabbert, Brigitte [Auteur]
Fractionnement des AgroRessources et Environnement [FARE]
Van Wuytswinkel, Olivier [Auteur]
Université de Picardie Jules Verne [UPJV]
Bendahmane, Abdelhafid [Auteur]
Unité de recherche en génomique végétale [URGV]
Thomasset, Brigitte [Auteur]
Génie Enzymatique et Cellulaire [GEC]
Hawkins, Simon [Auteur]
Stress Abiotiques et Différenciation des Végétaux Cultivés [SADV]
Université de Lille, Sciences et Technologies

Titre de la revue :

BMC Plant Biology

Numéro :

13

Pagination :

159

Éditeur :

BioMed Central

Date de publication :

2013-10-15

ISSN :

1471-2229

Mot(s)-clé(s) en anglais :

Flax
TILLinG
Mutants
Fiber
Lignin
Lignan
Oil
Fatty acids

Discipline(s) HAL :

Sciences du Vivant [q-bio]
Chimie/Chimie théorique et/ou physique

Résumé en anglais : [en]

Background : Flax (Linum usitatissimum L.) is an economically important fiber and oil crop that has been grown for thousands of years. The genome has been recently sequenced and transcriptomics are providing information ...
Lire la suite >Background : Flax (Linum usitatissimum L.) is an economically important fiber and oil crop that has been grown for thousands of years. The genome has been recently sequenced and transcriptomics are providing information on candidate genes potentially related to agronomically-important traits. In order to accelerate functional characterization of these genes we have generated a flax EMS mutant population that can be used as a TILLinG (Targeting Induced Local Lesions in Genomes) platform for forward and reverse genetics. Results : A population of 4,894 M2 mutant seed families was generated using 3 different EMS concentrations (0.3%, 0.6% and 0.75%) and used to produce M2 plants for subsequent phenotyping and DNA extraction. 10,839 viable M2 plants (4,033 families) were obtained and 1,552 families (38.5%) showed a visual developmental phenotype (stem size and diameter, plant architecture, flower-related). The majority of these families showed more than one phenotype. Mutant phenotype data are organised in a database and can be accessed and searched at UTILLdb (http://urgv.evry.inra.fr/UTILLdb). Preliminary screens were also performed for atypical fiber and seed phenotypes. Genomic DNA was extracted from 3,515 M2 families and eight-fold pooled for subsequent mutant detection by ENDO1 nuclease mis-match cleavage. In order to validate the collection for reverse genetics, DNA pools were screened for two genes coding enzymes of the lignin biosynthesis pathway: Coumarate-3-Hydroxylase (C3H) and Cinnamyl Alcohol Dehydrogenase (CAD). We identified 79 and 76 mutations in the C3H and CAD genes, respectively. The average mutation rate was calculated as 1/41 Kb giving rise to approximately 9,000 mutations per genome. Thirty-five out of the 52 flax cad mutant families containing missense or codon stop mutations showed the typical orange-brown xylem phenotype observed in CAD down-regulated/mutant plants in other species. Conclusions : We have developed a flax mutant population that can be used as an efficient forward and reverse genetics tool. The collection has an extremely high mutation rate that enables the detection of large numbers of independant mutant families by screening a comparatively low number of M2 families. The population will prove to be a valuable resource for both fundamental research and the identification of agronomically-important genes for crop improvement in flax.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS

Collections :

• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Équipe(s) de recherche :

Fibres végétales

Date de dépôt :

2020-12-14T14:59:27Z
2020-12-17T15:36:30Z
2020-12-17T15:50:00Z
2021-05-21T11:43:20Z
2022-08-26T12:17:21Z