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Allele mining in diverse accessions of tropical grasses to improve forage quality and reduce environmental impact

The C4Urochloa species (syn. Brachiaria) and Megathyrsus maximus (syn. Panicum maximum) are used as pasture for cattle across vast areas in tropical agriculture systems in Africa and South America. A key target for variety improvement is forage quality: enhanced digestibility could decrease the amou...

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Main Authors: Hanley, Steve J, Pellny, Till K., Vega, Jose J. de, Castiblanco, Valheria, Arango, Jacobo, Eastmond, Peter J., Heslop-Harrison, J.S., Mitchell, Rowan A. C.
Format: Journal Article
Language:Inglés
Published: Oxford University Press 2021
Subjects:
cells
digestibility
genetics
energy
forage
células
digestibilidad
genética
energía
forrajes
urochloa
Online Access:https://hdl.handle.net/10568/115325
Summary:The C4Urochloa species (syn. Brachiaria) and Megathyrsus maximus (syn. Panicum maximum) are used as pasture for cattle across vast areas in tropical agriculture systems in Africa and South America. A key target for variety improvement is forage quality: enhanced digestibility could decrease the amount of land required per unit production, and enhanced lipid content could decrease methane emissions from cattle. For these traits, loss-of-function (LOF) alleles in known gene targets are predicted to improve them, making a reverse genetics approach of allele mining feasible. We therefore set out to look for such alleles in diverse accessions of Urochloa species and Megathyrsus maximus from the genebank collection held at the CIAT.

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