Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bragantia |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052002000200004 |
Resumo: | Effects of higher temperatures on respiration and activity of alternative oxidase (AOX) were studied in mature leaves of Ajuga reptans L. and Rhodiola rosea L. Total respiration in both A. reptans and R. rosea increased exponentially with the increasing temperature of 10 °C to 35 °C. Respiration in the presence of benzhydroxamic acid (BHAM) also increased exponentially in accordance with the increasing temperature in the leaves of both A. reptans and R. rosea. Relative activity of the alternative pathway decreased significantly in the leaves of A. reptans with increasing temperatures. However, an increase in the relative activity of the alternative pathway was detected in the leaves of R. rosea. Thermoresistance of the alternative respiratory pathway was considered to be higher in R. rosea compared to A. reptans. We suppose that A. reptans and R. rosea have different mechanisms regulating partitioning of electrons to the alternative respiratory pathway. |
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Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathwayalternative respiratory pathwayrespirationalternative oxidaseleavestemperatureEffects of higher temperatures on respiration and activity of alternative oxidase (AOX) were studied in mature leaves of Ajuga reptans L. and Rhodiola rosea L. Total respiration in both A. reptans and R. rosea increased exponentially with the increasing temperature of 10 °C to 35 °C. Respiration in the presence of benzhydroxamic acid (BHAM) also increased exponentially in accordance with the increasing temperature in the leaves of both A. reptans and R. rosea. Relative activity of the alternative pathway decreased significantly in the leaves of A. reptans with increasing temperatures. However, an increase in the relative activity of the alternative pathway was detected in the leaves of R. rosea. Thermoresistance of the alternative respiratory pathway was considered to be higher in R. rosea compared to A. reptans. We suppose that A. reptans and R. rosea have different mechanisms regulating partitioning of electrons to the alternative respiratory pathway.Instituto Agronômico de Campinas2002-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052002000200004Bragantia v.61 n.2 2002reponame:Bragantiainstname:Instituto Agronômico de Campinas (IAC)instacron:IAC10.1590/S0006-87052002000200004info:eu-repo/semantics/openAccessPystina,Natalia V.Danilov,Roman A.eng2004-02-16T00:00:00Zoai:scielo:S0006-87052002000200004Revistahttps://www.scielo.br/j/brag/https://old.scielo.br/oai/scielo-oai.phpbragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br1678-44990006-8705opendoar:2004-02-16T00:00Bragantia - Instituto Agronômico de Campinas (IAC)false |
dc.title.none.fl_str_mv |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
title |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
spellingShingle |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway Pystina,Natalia V. alternative respiratory pathway respiration alternative oxidase leaves temperature |
title_short |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
title_full |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
title_fullStr |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
title_full_unstemmed |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
title_sort |
Temperature-dependent alterations of respiration in leaves of two selected vascular plant species: the role of the alternative oxidase pathway |
author |
Pystina,Natalia V. |
author_facet |
Pystina,Natalia V. Danilov,Roman A. |
author_role |
author |
author2 |
Danilov,Roman A. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Pystina,Natalia V. Danilov,Roman A. |
dc.subject.por.fl_str_mv |
alternative respiratory pathway respiration alternative oxidase leaves temperature |
topic |
alternative respiratory pathway respiration alternative oxidase leaves temperature |
description |
Effects of higher temperatures on respiration and activity of alternative oxidase (AOX) were studied in mature leaves of Ajuga reptans L. and Rhodiola rosea L. Total respiration in both A. reptans and R. rosea increased exponentially with the increasing temperature of 10 °C to 35 °C. Respiration in the presence of benzhydroxamic acid (BHAM) also increased exponentially in accordance with the increasing temperature in the leaves of both A. reptans and R. rosea. Relative activity of the alternative pathway decreased significantly in the leaves of A. reptans with increasing temperatures. However, an increase in the relative activity of the alternative pathway was detected in the leaves of R. rosea. Thermoresistance of the alternative respiratory pathway was considered to be higher in R. rosea compared to A. reptans. We suppose that A. reptans and R. rosea have different mechanisms regulating partitioning of electrons to the alternative respiratory pathway. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002-08-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052002000200004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052002000200004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0006-87052002000200004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
publisher.none.fl_str_mv |
Instituto Agronômico de Campinas |
dc.source.none.fl_str_mv |
Bragantia v.61 n.2 2002 reponame:Bragantia instname:Instituto Agronômico de Campinas (IAC) instacron:IAC |
instname_str |
Instituto Agronômico de Campinas (IAC) |
instacron_str |
IAC |
institution |
IAC |
reponame_str |
Bragantia |
collection |
Bragantia |
repository.name.fl_str_mv |
Bragantia - Instituto Agronômico de Campinas (IAC) |
repository.mail.fl_str_mv |
bragantia@iac.sp.gov.br||bragantia@iac.sp.gov.br |
_version_ |
1754193297856790528 |