Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)

27 pag., 3 fig., 2 suppl. fig., 1 tabl. Available online 14 December 2013. The definitive version is available at: http://www.sciencedirect.com/science/journal/00988472

Bibliographic Details
Authors: Julián Lagunas, Carmen, Herrero Romero, María, Rodrigo García, Javier
Format: article
Publication Date:2014
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/90348
Online Access:http://hdl.handle.net/10261/90348
Access Level:Open access
Keyword:Anther development
Chilling temperatures
Endodormancy
Meiosis
Pollen
Prunus armeniaca
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spelling Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)Julián Lagunas, CarmenHerrero Romero, MaríaRodrigo García, JavierAnther developmentChilling temperaturesEndodormancyMeiosisPollenPrunus armeniaca27 pag., 3 fig., 2 suppl. fig., 1 tabl. Available online 14 December 2013. The definitive version is available at: http://www.sciencedirect.com/science/journal/00988472In temperate woody plants, flowering time is adjusted to the environmental temperature, and survival to cold winter temperatures is achieved through dormancy. But also chilling temperatures during dormancy are required for proper flower bud development and flowering. The time the flower bud remains dormant is both genetically and environmentally controlled, and is a major factor determining the adaptation of species and cultivars to particular ecological conditions because chilling requirements vary greatly among genotypes. Recently this adaptation is jeopardised with climate changing conditions. However, little is known on the biological milestones underpinning these events, and when differences in flowering time are established. In this work we evaluate the hypothesis that anther meiosis time is related to winter cold temperatures, and that differences in flowering time are set up by differences in the time when pollen meiosis occurs. For this purpose, anther development has been characterised in five apricot cultivars with different chilling requirements. The work was done over two years with different weather conditions, a cold and a mild winter. The sporogenous tissues differentiated prior to dormancy and remained in this apparently quiescent stage during the winter. Once chilling requirements were fulfilled, meiosis closely followed and was highly correlated to breaking of endodormancy. Meiosis was completed within one week and was followed by a change in the colour of the anthers from green to yellowish, which could be a useful visual indicator to know that breaking of endodormancy had already occurred. The fact that this sequence of events was consistent in all the cultivars, and different climatic years analysed, supports the hypothesis that winter cold temperatures are related to the time of pollen meiosis, which in turn reflects in different flowering times.Financial support for this research was provided by Ministerio de Economía y Competitividad - European Regional Development Fund, European Union (AGL2009-12621-C02, AGL2012-40239) and 24 Gobierno de Aragón - European Social Fund, European Union (Grupo de Investigación de Aragón A-43). C. J. was supported by a fellowship of INIA (Instituto Nacional de Investigación y Tecnología Agroalimentaria)Peer reviewedElsevier201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/90348reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.envexpbot.2013.12.002info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/903482026-05-22T06:33:51Z
dc.title.none.fl_str_mv Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
title Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
spellingShingle Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
Julián Lagunas, Carmen
Anther development
Chilling temperatures
Endodormancy
Meiosis
Pollen
Prunus armeniaca
title_short Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
title_full Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
title_fullStr Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
title_full_unstemmed Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
title_sort Anther meiosis time is related to winter cold temperatures in apricot (Prunus armeniaca L.)
dc.creator.none.fl_str_mv Julián Lagunas, Carmen
Herrero Romero, María
Rodrigo García, Javier
author Julián Lagunas, Carmen
author_facet Julián Lagunas, Carmen
Herrero Romero, María
Rodrigo García, Javier
author_role author
author2 Herrero Romero, María
Rodrigo García, Javier
author2_role author
author
dc.subject.none.fl_str_mv Anther development
Chilling temperatures
Endodormancy
Meiosis
Pollen
Prunus armeniaca
topic Anther development
Chilling temperatures
Endodormancy
Meiosis
Pollen
Prunus armeniaca
description 27 pag., 3 fig., 2 suppl. fig., 1 tabl. Available online 14 December 2013. The definitive version is available at: http://www.sciencedirect.com/science/journal/00988472
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/90348
url http://hdl.handle.net/10261/90348
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.envexpbot.2013.12.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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