Morgane Roth

Morgane Roth
French National Institute for Agriculture, Food, and Environment (INRAE) | INRAE · Génétique et Amélioration des Fruits et Légumes (GAFL)

PhD
Fruit Tree Genetics

About

31
Publications
4,217
Reads
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112
Citations
Education
April 2014 - October 2017
ETH Zurich
Field of study
  • Evolutionary Biology
September 2009 - September 2013
Agrocampus Ouest
Field of study
  • Plant Breeding

Publications

Publications (31)
Article
Full-text available
Background: Diseases caused by Pseudomonas syringae (Ps) are recognized as the most damaging factors in fruit trees with a significant economic and sanitary impact on crops. Among them, bacterial canker of apricot is exceedingly difficult to control due to a lack of efficient prophylactic measures. Several sources of partial resistance have been id...
Article
Full-text available
Parental imbalances in the endosperm leading to impaired development and eventual hybrid seed failure are common causes of postzygotic isolation in flowering plants. Endosperm sensitivity to parental dosage is reflected by canonical phenotypes of 'parental excess' in reciprocal interploid crosses. Moreover, parental-excess traits are also evident i...
Article
Full-text available
Texture is a complex trait and a major component of fruit quality in apple. While the major effect of MdPG1, a gene controlling firmness, has already been exploited in elite cultivars, the genetic basis of crispness remains poorly understood. To further improve fruit texture, harnessing loci with minor effects via genomic selection is therefore nec...
Article
Full-text available
Breeding of apple is a long-term and costly process due to the time and space requirements for screening selection candidates. Genomics-assisted breeding utilizes genomic and phenotypic information to increase the selection efficiency in breeding programs, and measurements of phenotypes in different environments can facilitate the application of th...
Article
Full-text available
Interest in understanding hybrid seed failure (HSF) has mushroomed, both in terms of identifying underlying molecular processes and their evolutionary drivers. We review phenotypic and molecular advances with a focus on the ‘effective ploidy’ concept, witnessing a recent revival after long obscurity. Endosperm misdevelopment has now been shown to u...
Article
Full-text available
Implementation of genomic tools is desirable to increase the efficiency of apple breeding. Recently, the multi-environment apple reference population (apple REFPOP) proved useful for rediscovering loci, estimating genomic predictive ability, and studying genotype by environment interactions (G × E). So far, only two phenological traits were investi...
Article
Genetic admixture, resulting from the recombination between structural groups, is frequently encountered in breeding populations. In hybrid breeding, crossing admixed lines can generate substantial non-additive genetic variance and contrasted levels of inbreeding which can impact trait variation. This study aimed at testing recent methodological de...
Preprint
Full-text available
Implementation of genomic tools is desirable to increase the efficiency of apple breeding. The apple reference population (apple REFPOP) proved useful for rediscovering loci, estimating genomic prediction accuracy, and studying genotype by environment interactions (GxE). Here we show contrasting genetic architecture and genomic prediction accuracie...
Article
Full-text available
Given their diverse mating systems and recent divergence, wild tomatoes ( Solanum section Lycopersicon ) have become an attractive model system to study ecological divergence, the build-up of reproductive barriers, and the causes and consequences of the breakdown of self-incompatibility. Here we report on a lesser-studied group of species known as...
Preprint
Full-text available
Crosses between the wild tomato species Solanum peruvianum and S. chilense result in hybrid seed failure (HSF), characterized by endosperm misdevelopment and embryo arrest. We previously showed that genomic imprinting, the parent of origin dependent expression of alleles, is perturbed in hybrid endosperm, with many of the normally paternally expres...
Article
Full-text available
Crosses between the wild tomato species Solanum peruvianum and S. chilense result in hybrid seed failure (HSF), characterized by endosperm misdevelopment and embryo arrest. We previously showed that genomic imprinting, the parent-of-origin–dependent expression of alleles, is perturbed in hybrid endosperm, with many of the normally paternally expres...
Preprint
Full-text available
Endosperm misdevelopment leading to hybrid seed failure is a common cause of postzygotic isolation in angiosperms and is observed in both interploidy and homoploid crosses between closely related lineages. Moreover, parental dosage is critical for successful endosperm and seed development, typically requiring a ratio of two maternal to one paternal...
Article
Genomic imprinting is a conspicuous feature of the endosperm, a triploid tissue nurturing the embryo and synchronizing angiosperm seed development. An unknown subset of imprinted genes (IGs) is critical for successful seed development and should have highly conserved functions. Recent genome‐wide studies have found limited conservation of IGs among...
Article
Background and aims: Defective hybrid seed development in angiosperms might mediate the rapid establishment of intrinsic post-zygotic isolation between closely related species. Extensive crosses within and among three lineages of wild tomatoes (Solanum section Lycopersicon) were performed to address the incidence, developmental timing and histolog...
Book
Full-text available
Future demand in agricultural output is supposed to match the needs of 9 billion people with less input of resources. Can we transform our agricultural practices and move behind existing paradigms to develop innovative and sustainable agriculture production systems? A transformation of the regime is needed: a change in the socio-economic system thr...
Conference Paper
Hybrid seed failure is a common reproductive barrier between plant species. For plant breeders, it represents a major obstacle to introgression of desirable traits from wild to domesticated species. Postzygotic barriers to hybridization have been well-documented among wild tomato species, and histological work showed that endosperm failure is the m...
Poster
Hybrid seed failure, a common postzygotic barrier in angiosperms, is likely mediated by abnormal endosperm development, highlighting the pivotal role of the endosperm for proper seed development. Epigenetic processes modulate the parent-of-origin specific expression of so-called “imprinted” genes in the endosperm, some of which may be important for...

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Projects

Projects (4)
Project
As for all perennials, using genomic selection is expected to result in a high genetic gain per unit of time in apple. We aim at testing and applying genomic predictions for multiple traits and multiple environments in apple using genomic resources made available through several European programs.
Project
How to provide efficient and sustainable solutions to the economic impact of bacterial canker in apricot orchards? To answer this question, the Resibac project (2013-2016) financed by the French Ministry in charge of Agriculture has been conducted between GAFL and Plant Pathology research units. The project aimed to characterize the risk factors favoring disease development and to screen genetic backgrounds for their susceptibility. Both are then expected to achieve the deployment of resistant cultivars in the orchard.