Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/29131 |
Resumo: | Climate change will increase the frequency of drought, heat waves, and wildfires. We intended to analyse how fire recurrence and/or induced water stress can affect seed germination and root cell division in Pinus pinaster Aiton. Seeds from stands with no prior fire history and from post-fire regeneration (in areas burnt once, twice, and thrice) in northern Portugal were germinated in distilled water (control) and polyethylene glycol (PEG) to simulate water stress for four weeks, followed by a recovery period. Roots were analysed cytogenetically. The germination index of the Pinus pinaster seeds was not statistically influenced by the induction of osmotic stress, nor by the fire recurrence of the stands. The mean germination time (MGT) was 10–29 days and 1–36 days for the stress and recovery periods, respectively, and increased with PEG concentration. The 20% PEG treatment inhibited root growth after germination. The 10% PEG treatment induced a high frequency of cytogenetic anomalies, mostly in the sites which experienced fire exposure. While fire recurrence did not affect the germination rate, it seemed to reduce the water stress response, negatively impacting cell division and impair root growth |
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Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aitoncytogeneticsdroughtgerminationmitosispolyethylene glycolmaritime pineClimate change will increase the frequency of drought, heat waves, and wildfires. We intended to analyse how fire recurrence and/or induced water stress can affect seed germination and root cell division in Pinus pinaster Aiton. Seeds from stands with no prior fire history and from post-fire regeneration (in areas burnt once, twice, and thrice) in northern Portugal were germinated in distilled water (control) and polyethylene glycol (PEG) to simulate water stress for four weeks, followed by a recovery period. Roots were analysed cytogenetically. The germination index of the Pinus pinaster seeds was not statistically influenced by the induction of osmotic stress, nor by the fire recurrence of the stands. The mean germination time (MGT) was 10–29 days and 1–36 days for the stress and recovery periods, respectively, and increased with PEG concentration. The 20% PEG treatment inhibited root growth after germination. The 10% PEG treatment induced a high frequency of cytogenetic anomalies, mostly in the sites which experienced fire exposure. While fire recurrence did not affect the germination rate, it seemed to reduce the water stress response, negatively impacting cell division and impair root growthMDPIRepositório da Universidade de LisboaRibeiro, StéphanieGaspar, Maria JoãoLima-Brito, JoséFonseca, TeresaSoares, PaulaCerveira, AdelaideFernandes, Paulo M.2023-10-26T10:55:57Z2023-012023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/29131engRibeiro, S.; Gaspar, M.J.; Lima-Brito, J.; Fonseca, T.; Soares, P.; Cerveira, A.; Fernandes, P.M.; Louzada, J.; Carvalho, A. Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton. Forests 2023, 14, 7810.3390/f14010078info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-29T01:30:54Zoai:www.repository.utl.pt:10400.5/29131Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:26:05.792982Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
title |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
spellingShingle |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton Ribeiro, Stéphanie cytogenetics drought germination mitosis polyethylene glycol maritime pine |
title_short |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
title_full |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
title_fullStr |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
title_full_unstemmed |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
title_sort |
Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton |
author |
Ribeiro, Stéphanie |
author_facet |
Ribeiro, Stéphanie Gaspar, Maria João Lima-Brito, José Fonseca, Teresa Soares, Paula Cerveira, Adelaide Fernandes, Paulo M. |
author_role |
author |
author2 |
Gaspar, Maria João Lima-Brito, José Fonseca, Teresa Soares, Paula Cerveira, Adelaide Fernandes, Paulo M. |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Ribeiro, Stéphanie Gaspar, Maria João Lima-Brito, José Fonseca, Teresa Soares, Paula Cerveira, Adelaide Fernandes, Paulo M. |
dc.subject.por.fl_str_mv |
cytogenetics drought germination mitosis polyethylene glycol maritime pine |
topic |
cytogenetics drought germination mitosis polyethylene glycol maritime pine |
description |
Climate change will increase the frequency of drought, heat waves, and wildfires. We intended to analyse how fire recurrence and/or induced water stress can affect seed germination and root cell division in Pinus pinaster Aiton. Seeds from stands with no prior fire history and from post-fire regeneration (in areas burnt once, twice, and thrice) in northern Portugal were germinated in distilled water (control) and polyethylene glycol (PEG) to simulate water stress for four weeks, followed by a recovery period. Roots were analysed cytogenetically. The germination index of the Pinus pinaster seeds was not statistically influenced by the induction of osmotic stress, nor by the fire recurrence of the stands. The mean germination time (MGT) was 10–29 days and 1–36 days for the stress and recovery periods, respectively, and increased with PEG concentration. The 20% PEG treatment inhibited root growth after germination. The 10% PEG treatment induced a high frequency of cytogenetic anomalies, mostly in the sites which experienced fire exposure. While fire recurrence did not affect the germination rate, it seemed to reduce the water stress response, negatively impacting cell division and impair root growth |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-26T10:55:57Z 2023-01 2023-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/29131 |
url |
http://hdl.handle.net/10400.5/29131 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ribeiro, S.; Gaspar, M.J.; Lima-Brito, J.; Fonseca, T.; Soares, P.; Cerveira, A.; Fernandes, P.M.; Louzada, J.; Carvalho, A. Impact of fire recurrence and induced water stress on seed germination and root mitotic cell cycle of Pinus pinaster aiton. Forests 2023, 14, 78 10.3390/f14010078 |
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 |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134142577770496 |