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QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis

Numerous climate change threats will necessitate a shift toward more sustainable agricultural practices during the 21st century. Conversion of annual crops to perennials that are capable of regrowing over multiple yearly growth cycles could help to facilitate this transition. Perennials can capture...

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Autores principales: Swentowsky, Kyle W., Bell, Harrison S., Wills, David M., Dawe, R. Kelly
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8421791/
https://www.ncbi.nlm.nih.gov/pubmed/34504508
http://dx.doi.org/10.3389/fpls.2021.707839
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author Swentowsky, Kyle W.
Bell, Harrison S.
Wills, David M.
Dawe, R. Kelly
author_facet Swentowsky, Kyle W.
Bell, Harrison S.
Wills, David M.
Dawe, R. Kelly
author_sort Swentowsky, Kyle W.
collection PubMed
description Numerous climate change threats will necessitate a shift toward more sustainable agricultural practices during the 21st century. Conversion of annual crops to perennials that are capable of regrowing over multiple yearly growth cycles could help to facilitate this transition. Perennials can capture greater amounts of carbon and access more water and soil nutrients compared to annuals. In principle it should be possible to identify genes that confer perenniality from wild relatives and transfer them into existing breeding lines to create novel perennial crops. Two major loci controlling perennial regrowth in the maize relative Zea diploperennis were previously mapped to chromosome 2 (reg1) and chromosome 7 (reg2). Here we extend this work by mapping perennial regrowth in segregating populations involving Z. diploperennis and the maize inbreds P39 and Hp301 using QTL-seq and traditional QTL mapping approaches. The results confirmed the existence of a major perennial regrowth QTL on chromosome 2 (reg1). Although we did not observe the reg2 QTL in these populations, we discovered a third QTL on chromosome 8 which we named regrowth3 (reg3). The reg3 locus exerts its strongest effect late in the regrowth cycle. Neither reg1 nor reg3 overlapped with tiller number QTL scored in the same population, suggesting specific roles in the perennial phenotype. Our data, along with prior work, indicate that perennial regrowth in maize is conferred by relatively few major QTL.
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spelling pubmed-84217912021-09-08 QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis Swentowsky, Kyle W. Bell, Harrison S. Wills, David M. Dawe, R. Kelly Front Plant Sci Plant Science Numerous climate change threats will necessitate a shift toward more sustainable agricultural practices during the 21st century. Conversion of annual crops to perennials that are capable of regrowing over multiple yearly growth cycles could help to facilitate this transition. Perennials can capture greater amounts of carbon and access more water and soil nutrients compared to annuals. In principle it should be possible to identify genes that confer perenniality from wild relatives and transfer them into existing breeding lines to create novel perennial crops. Two major loci controlling perennial regrowth in the maize relative Zea diploperennis were previously mapped to chromosome 2 (reg1) and chromosome 7 (reg2). Here we extend this work by mapping perennial regrowth in segregating populations involving Z. diploperennis and the maize inbreds P39 and Hp301 using QTL-seq and traditional QTL mapping approaches. The results confirmed the existence of a major perennial regrowth QTL on chromosome 2 (reg1). Although we did not observe the reg2 QTL in these populations, we discovered a third QTL on chromosome 8 which we named regrowth3 (reg3). The reg3 locus exerts its strongest effect late in the regrowth cycle. Neither reg1 nor reg3 overlapped with tiller number QTL scored in the same population, suggesting specific roles in the perennial phenotype. Our data, along with prior work, indicate that perennial regrowth in maize is conferred by relatively few major QTL. Frontiers Media S.A. 2021-08-24 /pmc/articles/PMC8421791/ /pubmed/34504508 http://dx.doi.org/10.3389/fpls.2021.707839 Text en Copyright © 2021 Swentowsky, Bell, Wills and Dawe. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Swentowsky, Kyle W.
Bell, Harrison S.
Wills, David M.
Dawe, R. Kelly
QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title_full QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title_fullStr QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title_full_unstemmed QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title_short QTL Map of Early- and Late-Stage Perennial Regrowth in Zea diploperennis
title_sort qtl map of early- and late-stage perennial regrowth in zea diploperennis
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8421791/
https://www.ncbi.nlm.nih.gov/pubmed/34504508
http://dx.doi.org/10.3389/fpls.2021.707839
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