The wheat VRN2 gene is a flowering repressor down-regulated by vernalization

Authors
Yan, Liuling; Loukoianov, Artem; Blechl, Ann; Tranquilli, Gabriela Edith; Ramakrishna, Wusirika; San Miguel, Phillip; Bennetzen, Jeffrey L.; Echenique, Carmen Viviana; Dubcovsky, Jorge
Publication Year
2004
Language
English
Format
article
Status
Published version
Description
Plants with a winter growth habit flower earlier when exposed for several weeks to cold temperatures, a process called vernalization. We report here the positional cloning of the wheat vernalization gene VRN2, a dominant repressor of flowering that is down-regulated by vernalization. Loss of function of VRN2, whether by natural mutations or deletions, resulted in spring lines, which do not require vernalization to flower. Reduction of the RNA level of VRN2 by RNA interference accelerated the flowering time of transgenic winter-wheat plants by more than a month.
Fil: Yan, Liuling. University of California; Estados Unidos
Fil: Loukoianov, Artem. University of California; Estados Unidos
Fil: Blechl, Ann. United States Department of Agriculture; Estados Unidos
Fil: Tranquilli, Gabriela Edith. University of California; Estados Unidos
Fil: Ramakrishna, Wusirika. Michigan Technological University; Estados Unidos
Fil: San Miguel, Phillip. Purdue University; Estados Unidos
Fil: Bennetzen, Jeffrey L.. University of Georgia; Estados Unidos
Fil: Echenique, Carmen Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
Fil: Dubcovsky, Jorge. University of California; Estados Unidos
Subject
cloning
wheat
vernalization
transgenic
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/30272