Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa

Most major crops are polyploid species and the production of genetically engineered cultivars normally requires the introgression of transgenic or gene-edited traits into elite germplasm. Thus, a main goal of plant research is the search of systems to identify dominant mutations. In this article, we...

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Main Authors: Cintia Jozefkowicz, Cristina Gómez, Ariel Odorizzi, Anelia Iantcheva, Pascal Ratet, Nicolás Ayub, Gabriela Soto
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-12-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2021.805032/full
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author Cintia Jozefkowicz
Cintia Jozefkowicz
Cristina Gómez
Cristina Gómez
Ariel Odorizzi
Anelia Iantcheva
Pascal Ratet
Pascal Ratet
Nicolás Ayub
Nicolás Ayub
Gabriela Soto
Gabriela Soto
author_facet Cintia Jozefkowicz
Cintia Jozefkowicz
Cristina Gómez
Cristina Gómez
Ariel Odorizzi
Anelia Iantcheva
Pascal Ratet
Pascal Ratet
Nicolás Ayub
Nicolás Ayub
Gabriela Soto
Gabriela Soto
author_sort Cintia Jozefkowicz
collection DOAJ
description Most major crops are polyploid species and the production of genetically engineered cultivars normally requires the introgression of transgenic or gene-edited traits into elite germplasm. Thus, a main goal of plant research is the search of systems to identify dominant mutations. In this article, we show that the Tnt1 element can be used to identify dominant mutations in allogamous tetraploid cultivated alfalfa. Specifically, we show that a single allelic mutation in the MsNAC39 gene produces multifoliate leaves (mfl) alfalfa plants, a pivot trait of breeding programs of this forage species. Finally, we discuss the potential application of a combination of preliminary screening of beneficial dominant mutants using Tnt1 mutant libraries and genome editing via the CRISPR/Cas9 system to identify target genes and to rapidly improve both autogamous and allogamous polyploid crops.
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spelling doaj.art-c55205abb84340d281accf481c78979f2022-12-21T21:28:33ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-12-011210.3389/fpls.2021.805032805032Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated AlfalfaCintia Jozefkowicz0Cintia Jozefkowicz1Cristina Gómez2Cristina Gómez3Ariel Odorizzi4Anelia Iantcheva5Pascal Ratet6Pascal Ratet7Nicolás Ayub8Nicolás Ayub9Gabriela Soto10Gabriela Soto11Instituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Buenos Aires, ArgentinaInstituto de Genética (IGEAF), Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, ArgentinaInstituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Buenos Aires, ArgentinaInstituto de Genética (IGEAF), Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, ArgentinaEstación Experimental Agropecuaria Manfredi, Instituto Nacional de Tecnología Agropecuaria (INTA), Córdoba, ArgentinaAgroBioInstitute, Agricultural Academy, Sofia, BulgariaUniversité Paris-Saclay, INRAE, CNRS, Université d’Évry, Institute of Plant Sciences Paris-Saclay (IPS2), Orsay, FranceUniversité de Paris, CNRS, INRAE, Institute of Plant Sciences Paris Saclay (IPS2), Orsay, FranceInstituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Buenos Aires, ArgentinaInstituto de Genética (IGEAF), Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, ArgentinaInstituto de Agrobiotecnología y Biología Molecular (INTA-CONICET), Buenos Aires, ArgentinaInstituto de Genética (IGEAF), Instituto Nacional de Tecnología Agropecuaria (INTA), Buenos Aires, ArgentinaMost major crops are polyploid species and the production of genetically engineered cultivars normally requires the introgression of transgenic or gene-edited traits into elite germplasm. Thus, a main goal of plant research is the search of systems to identify dominant mutations. In this article, we show that the Tnt1 element can be used to identify dominant mutations in allogamous tetraploid cultivated alfalfa. Specifically, we show that a single allelic mutation in the MsNAC39 gene produces multifoliate leaves (mfl) alfalfa plants, a pivot trait of breeding programs of this forage species. Finally, we discuss the potential application of a combination of preliminary screening of beneficial dominant mutants using Tnt1 mutant libraries and genome editing via the CRISPR/Cas9 system to identify target genes and to rapidly improve both autogamous and allogamous polyploid crops.https://www.frontiersin.org/articles/10.3389/fpls.2021.805032/fulltransformationTnt1dominant mutationpolyploidyalfalfa
spellingShingle Cintia Jozefkowicz
Cintia Jozefkowicz
Cristina Gómez
Cristina Gómez
Ariel Odorizzi
Anelia Iantcheva
Pascal Ratet
Pascal Ratet
Nicolás Ayub
Nicolás Ayub
Gabriela Soto
Gabriela Soto
Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
Frontiers in Plant Science
transformation
Tnt1
dominant mutation
polyploidy
alfalfa
title Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
title_full Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
title_fullStr Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
title_full_unstemmed Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
title_short Expanding the Benefits of Tnt1 for the Identification of Dominant Mutations in Polyploid Crops: A Single Allelic Mutation in the MsNAC39 Gene Produces Multifoliated Alfalfa
title_sort expanding the benefits of tnt1 for the identification of dominant mutations in polyploid crops a single allelic mutation in the msnac39 gene produces multifoliated alfalfa
topic transformation
Tnt1
dominant mutation
polyploidy
alfalfa
url https://www.frontiersin.org/articles/10.3389/fpls.2021.805032/full
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