Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines

Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines

Four extra early-flowering mutants, named extra early-flowering1 (exe1), exe2, exe3, and exe4, were identified in Triticum monococcum strain KU104-1 following heavy-ion beam mutagenesis. The four exe mutants fell into two groups, namely Type I (moderately extra early-flowering type; exe1 and exe3) a...

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Main Authors: Nishiura, Aiko, Kazama, Yusuke, Abe, Tomoko, Mizuno, Nobuyuki, Nasuda, Shuhei, Murai, Koji
Format: Online
Language:English
Published: Japanese Society of Breeding 2014
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154610/
id pubmed-4154610
recordtype oai_dc
spelling pubmed-41546102014-10-15 Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines Nishiura, Aiko Kazama, Yusuke Abe, Tomoko Mizuno, Nobuyuki Nasuda, Shuhei Murai, Koji Research Papers Four extra early-flowering mutants, named extra early-flowering1 (exe1), exe2, exe3, and exe4, were identified in Triticum monococcum strain KU104-1 following heavy-ion beam mutagenesis. The four exe mutants fell into two groups, namely Type I (moderately extra early-flowering type; exe1 and exe3) and Type II (extremely extra early-flowering type; exe2 and exe4). Analysis of plant development in a growth chamber showed that the speed of leaf emergence was accelerated in exe mutants at the reproductive stage compared to wild-type (WT) plants. The speed of leaf emergence was faster in Type II than Type I plants. Analysis of VERNALIZATION 1 (VRN1), a flowering promoter gene, showed that it was more highly expressed in seedlings at early developmental stages in Type II mutants than Type I mutants. These findings indicate that the difference in earliness between Type I and Type II mutants is associated with the level of VRN1 expression. The original KU104-1 is an einkorn wheat strain that carries a null allele of the VRN2 gene, a repressor of flowering. Thus, our results indicate that the level of VRN1 expression controls earliness in exe mutants independently of VRN2. Japanese Society of Breeding 2014-09 2014-09-01 /pmc/articles/PMC4154610/ /pubmed/25320556 http://dx.doi.org/10.1270/jsbbs.64.213 Text en Copyright © 2014 by JAPANESE SOCIETY OF BREEDING http://creativecommons.org/licenses/by-nc-nd/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Nishiura, Aiko
Kazama, Yusuke
Abe, Tomoko
Mizuno, Nobuyuki
Nasuda, Shuhei
Murai, Koji
spellingShingle Nishiura, Aiko
Kazama, Yusuke
Abe, Tomoko
Mizuno, Nobuyuki
Nasuda, Shuhei
Murai, Koji
Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
author_facet Nishiura, Aiko
Kazama, Yusuke
Abe, Tomoko
Mizuno, Nobuyuki
Nasuda, Shuhei
Murai, Koji
author_sort Nishiura, Aiko
title Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
title_short Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
title_full Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
title_fullStr Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
title_full_unstemmed Level of VERNALIZATION 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
title_sort level of vernalization 1 expression is correlated with earliness in extra early-flowering mutant wheat lines
description Four extra early-flowering mutants, named extra early-flowering1 (exe1), exe2, exe3, and exe4, were identified in Triticum monococcum strain KU104-1 following heavy-ion beam mutagenesis. The four exe mutants fell into two groups, namely Type I (moderately extra early-flowering type; exe1 and exe3) and Type II (extremely extra early-flowering type; exe2 and exe4). Analysis of plant development in a growth chamber showed that the speed of leaf emergence was accelerated in exe mutants at the reproductive stage compared to wild-type (WT) plants. The speed of leaf emergence was faster in Type II than Type I plants. Analysis of VERNALIZATION 1 (VRN1), a flowering promoter gene, showed that it was more highly expressed in seedlings at early developmental stages in Type II mutants than Type I mutants. These findings indicate that the difference in earliness between Type I and Type II mutants is associated with the level of VRN1 expression. The original KU104-1 is an einkorn wheat strain that carries a null allele of the VRN2 gene, a repressor of flowering. Thus, our results indicate that the level of VRN1 expression controls earliness in exe mutants independently of VRN2.
publisher Japanese Society of Breeding
publishDate 2014
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4154610/
_version_ 1613130948538269696

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