Molecular responses of Coffea spp. tolerance to low non-freezing temperatures

Bibliographic Details
Main Author: Santos, Paula Cristina Bento Batista dos
Publication Date: 2010
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.5/3864
Summary: Doutoramento em Biologia - Instituto Superior de Agronomia
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spelling Molecular responses of Coffea spp. tolerance to low non-freezing temperaturesCoffeaantioxidative moleculescoldphotosynthesischloroplast membrane lipidsgene expressionDoutoramento em Biologia - Instituto Superior de AgronomiaLow positive temperatures are of up most importance in tropical plant species, namely in Coffea spp., disturbing plant growth and metabolism, with impact on photosynthesis and yield. An integrated biochemical and molecular approach was used to analyze the cold impact and tolerance ability on photosynthesis of coffee plants, linked to modifications of the status of the antioxidative system, and chloroplast membrane lipids. Five coffee genotypes with contrasting cold sensitivity were used: Coffea canephora cv. Apoatã, C. arabica cv. Catuaí, C. dewevrei, Icatu (C. arabica x C. canephora) and Piatã (C. dewevrei x C. arabica). Determinations were performed along a slow cold imposition (to allow acclimation) from 25/20 ºC (day/night) down to 13/8 ºC, after exposure to 4o C (chilling) and in the rewarming period thereafter. Cold exposure strongly affected net photosynthesis in all genotypes, although stomatal limitations were not detected. Icatu revealed the lowest leaf loss, higher reinforcement of the antioxidative system, qualitative changes in chloroplast membrane lipids and regulation of some key genes. Altogether these responses indicate a better ability of this genotype to cope with low positive temperaturesISA/UTLRibeiro, Ana Isabel FariaChaves, Maria ManuelaRepositório da Universidade de LisboaSantos, Paula Cristina Bento Batista dos2012-02-23T16:28:24Z20102010-01-01T00:00:00Zdoctoral thesisinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10400.5/3864engSantos, Paula Cristina Bento Batista dos - Molecular responses of Coffea spp. tolerance to low non-freezing temperatures. Lisboa: ISA, 2010info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T16:09:56Zoai:repositorio.ulisboa.pt:10400.5/3864Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T04:04:41.451147Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
title Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
spellingShingle Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
Santos, Paula Cristina Bento Batista dos
Coffea
antioxidative molecules
cold
photosynthesis
chloroplast membrane lipids
gene expression
title_short Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
title_full Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
title_fullStr Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
title_full_unstemmed Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
title_sort Molecular responses of Coffea spp. tolerance to low non-freezing temperatures
author Santos, Paula Cristina Bento Batista dos
author_facet Santos, Paula Cristina Bento Batista dos
author_role author
dc.contributor.none.fl_str_mv Ribeiro, Ana Isabel Faria
Chaves, Maria Manuela
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Santos, Paula Cristina Bento Batista dos
dc.subject.por.fl_str_mv Coffea
antioxidative molecules
cold
photosynthesis
chloroplast membrane lipids
gene expression
topic Coffea
antioxidative molecules
cold
photosynthesis
chloroplast membrane lipids
gene expression
description Doutoramento em Biologia - Instituto Superior de Agronomia
publishDate 2010
dc.date.none.fl_str_mv 2010
2010-01-01T00:00:00Z
2012-02-23T16:28:24Z
dc.type.driver.fl_str_mv doctoral thesis
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/3864
url http://hdl.handle.net/10400.5/3864
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Santos, Paula Cristina Bento Batista dos - Molecular responses of Coffea spp. tolerance to low non-freezing temperatures. Lisboa: ISA, 2010
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ISA/UTL
publisher.none.fl_str_mv ISA/UTL
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833601933445693440

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