Publications by authors named "Francine Paraiso"
Article Synopsis
- Specific combinations of natural alleles in the LFY and WAPO1 genes enhance spikelet number per spike (SNS) in wheat, which is key for grain yield.
- A significant amino acid change in WAPO1 (C47F) and a polymorphism in LFY (R80S) were linked to increased SNS, revealing LFY-B as a potential causal gene.
- The study suggests that the allele combination WAPO-A1-47F with LFY-B 34L and 80S can be strategically used in wheat breeding to boost SNS and overall grain yield.
In wheat, the transition of the inflorescence meristem to a terminal spikelet (IM→TS) determines the spikelet number per spike (SNS), an important yield component. In this study, we demonstrate that the plant-specific transcription factor LEAFY (LFY) physically and genetically interacts with WHEAT ORTHOLOG OF APO1 (WAPO1) to regulate SNS and floret development. Loss-of-function mutations in either or both genes result in significant and similar reductions in SNS, as a result of a reduction in the rate of spikelet meristem formation per day.
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- Many polyploid crops lack comprehensive reverse genetic resources, unlike diploid model organisms, making it hard to study gene function.
- Wheat, being a young polyploid species with high sequence identity among its subgenomes, can tolerate a large number of mutations, allowing researchers to catalog over 10 million mutations in nearly 3,000 mutant lines.
- This extensive mutation dataset helps identify hidden genetic variations and offers a framework for studying other polyploid crops in plant evolution.
Background: Wheat (Triticum ssp.) is an important food source for humans in many regions around the world. However, the ability to understand and modify gene function for crop improvement is hindered by the lack of available genomic resources.
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