Publications by authors named "F D'Eon Marcel"
Article Synopsis
- The study focuses on the predominant hermaphroditic nature of flowering plants and investigates the poorly understood transition to unisexuality, using melons as a model.
- Researchers identify a spontaneous mutant in melons that shifts from bisexual to unisexual male flowers, linking this change to a mutation affecting the Ethylene Insensitive 2 (CmEIN2) gene.
- The findings suggest that environmental factors can trigger the movement of certain genetic elements, which play a role in both sex determination and fruit shape, highlighting implications for plant adaptation and crop development.
Establishment of arbuscular mycorrhiza relies on a plant signaling pathway that can be activated by fungal chitinic signals such as short-chain chitooligosaccharides and lipo-chitooligosaccharides (LCOs). The tomato LysM receptor-like kinase SlLYK10 has high affinity for LCOs and is involved in root colonization by arbuscular mycorrhizal fungi (AMF); however, its role in LCO responses has not yet been studied. Here, we show that SlLYK10 proteins produced by the Sllyk10-1 and Sllyk10-2 mutant alleles, which both cause decreases in AMF colonization and carry mutations in LysM1 and 2, respectively, have similar LCO-binding affinities compared to the WT SlLYK10.
View Article and Find Full Text PDFSex determination evolved to control the development of unisexual flowers. In agriculture, it conditions how plants are cultivated and bred. We investigated how female flowers develop in monoecious cucurbits.
View Article and Find Full Text PDFMale and female unisexual flowers evolved from hermaphroditic ancestors, and control of flower sex is useful for plant breeding. We isolated a female-to-male sex transition mutant in melon and identified the causal gene as the carpel identity gene <i>CRABS CLAW (CRC)</i>. We show that the master regulator of sex determination in cucurbits, the transcription factor <i>WIP1</i> whose expression orchestrates male flower development, recruits the corepressor TOPLESS to the <i>CRC</i> promoter to suppress its expression through histone deacetylation.
View Article and Find Full Text PDFArticle Synopsis
- Fruit maturation and softening significantly affect the shelf-life of climacteric tomatoes, with ethylene being a crucial factor in this process.
- The study identified two related proteins, SlACO1 and SlE8, which are highly expressed during ripening but did not find natural mutations that impair their functions.
- By using TILLING techniques, potential alleles (slaco1-1, slaco1-2, sle8-1, sle8-2) for improving shelf-life and ripening speed in tomatoes were identified, emphasizing the roles of SlACO1 and SlE8 in ethylene production for post-harvest management.