Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)

Autores
Fabbri, Liliana Teresa; Ploschuk, Edmundo Leonardo; López, María Virginia; Insausti, Pedro; Rua, Gabriel Hugo
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Morphological and physiological responses to freezing were evaluated in two ecotypes of the perennial turfgrass Paspalum vaginatum. Leaf extension rate, number of active meristems, leaf water potential and net photosynthesis were measured on plants of both a commercial cultivar, ‘Sea Isle 2000’, and a wild ecotype from the Flooding Pampa grasslands of Argentina. Plants were propagated by cloning, cultivated in pots, and examined during 18 consecutive days under two treatments: a non-frozen control treatment (15.5±7 °C) and a frozen treatment with two stages: Stage 1 with four hours of freezing stress for 10 nights (-5°C), and Stage 2 with 12 hours of freezing stress for eight nights (five nights at -5oC and three nights at -8°C). After these treatments, plants were returned to the outside environment to evaluate shoot injury and post-freezing recovery. Leaf water potential, net photosynthesis and leaf extension rate were significantly higher in the wild ecotype than in the commercial cultivar. Meristem density was reduced after freezing in both ecotypes, but was more pronounced in the commercial cultivar (98.5%) than in the wild ecotype (80%). Thus, the two ecotypes coming from different environments, exhibited different morphological and physiological responses to exposure to freezing temperatures.
Fil: Fabbri, Liliana Teresa. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: López, María Virginia. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Insausti, Pedro. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
Fil: Rua, Gabriel Hugo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
Materia
FREEZING TOLERANCE
LEAF WATER POTENTIAL
MERISTEM INJURY
PASPALUM VAGINATUM
PHOTOSYNTHESIS
SEASHORE PASPALUM
TURFGRASS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/118299
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/118299
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)Fabbri, Liliana TeresaPloschuk, Edmundo LeonardoLópez, María VirginiaInsausti, PedroRua, Gabriel HugoFREEZING TOLERANCELEAF WATER POTENTIALMERISTEM INJURYPASPALUM VAGINATUMPHOTOSYNTHESISSEASHORE PASPALUMTURFGRASShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Morphological and physiological responses to freezing were evaluated in two ecotypes of the perennial turfgrass Paspalum vaginatum. Leaf extension rate, number of active meristems, leaf water potential and net photosynthesis were measured on plants of both a commercial cultivar, ‘Sea Isle 2000’, and a wild ecotype from the Flooding Pampa grasslands of Argentina. Plants were propagated by cloning, cultivated in pots, and examined during 18 consecutive days under two treatments: a non-frozen control treatment (15.5±7 °C) and a frozen treatment with two stages: Stage 1 with four hours of freezing stress for 10 nights (-5°C), and Stage 2 with 12 hours of freezing stress for eight nights (five nights at -5oC and three nights at -8°C). After these treatments, plants were returned to the outside environment to evaluate shoot injury and post-freezing recovery. Leaf water potential, net photosynthesis and leaf extension rate were significantly higher in the wild ecotype than in the commercial cultivar. Meristem density was reduced after freezing in both ecotypes, but was more pronounced in the commercial cultivar (98.5%) than in the wild ecotype (80%). Thus, the two ecotypes coming from different environments, exhibited different morphological and physiological responses to exposure to freezing temperatures.Fil: Fabbri, Liliana Teresa. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: López, María Virginia. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Insausti, Pedro. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; ArgentinaFil: Rua, Gabriel Hugo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; ArgentinaSociedade Botanica do Brasil2016-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/118299Fabbri, Liliana Teresa; Ploschuk, Edmundo Leonardo; López, María Virginia; Insausti, Pedro; Rua, Gabriel Hugo; Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae); Sociedade Botanica do Brasil; Acta Botanica Brasilica; 30; 1; 1-2016; 152-1560102-33061677-941XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100152&lng=en&nrm=iso&tlng=eninfo:eu-repo/semantics/altIdentifier/doi/10.1590/0102-33062015abb0233info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:24:01Zoai:ri.conicet.gov.ar:11336/118299instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:24:01.854CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
title Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
spellingShingle Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
Fabbri, Liliana Teresa
FREEZING TOLERANCE
LEAF WATER POTENTIAL
MERISTEM INJURY
PASPALUM VAGINATUM
PHOTOSYNTHESIS
SEASHORE PASPALUM
TURFGRASS
title_short Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
title_full Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
title_fullStr Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
title_full_unstemmed Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
title_sort Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae)
dc.creator.none.fl_str_mv Fabbri, Liliana Teresa
Ploschuk, Edmundo Leonardo
López, María Virginia
Insausti, Pedro
Rua, Gabriel Hugo
author Fabbri, Liliana Teresa
author_facet Fabbri, Liliana Teresa
Ploschuk, Edmundo Leonardo
López, María Virginia
Insausti, Pedro
Rua, Gabriel Hugo
author_role author
author2 Ploschuk, Edmundo Leonardo
López, María Virginia
Insausti, Pedro
Rua, Gabriel Hugo
author2_role author
author
author
author
dc.subject.none.fl_str_mv FREEZING TOLERANCE
LEAF WATER POTENTIAL
MERISTEM INJURY
PASPALUM VAGINATUM
PHOTOSYNTHESIS
SEASHORE PASPALUM
TURFGRASS
topic FREEZING TOLERANCE
LEAF WATER POTENTIAL
MERISTEM INJURY
PASPALUM VAGINATUM
PHOTOSYNTHESIS
SEASHORE PASPALUM
TURFGRASS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Morphological and physiological responses to freezing were evaluated in two ecotypes of the perennial turfgrass Paspalum vaginatum. Leaf extension rate, number of active meristems, leaf water potential and net photosynthesis were measured on plants of both a commercial cultivar, ‘Sea Isle 2000’, and a wild ecotype from the Flooding Pampa grasslands of Argentina. Plants were propagated by cloning, cultivated in pots, and examined during 18 consecutive days under two treatments: a non-frozen control treatment (15.5±7 °C) and a frozen treatment with two stages: Stage 1 with four hours of freezing stress for 10 nights (-5°C), and Stage 2 with 12 hours of freezing stress for eight nights (five nights at -5oC and three nights at -8°C). After these treatments, plants were returned to the outside environment to evaluate shoot injury and post-freezing recovery. Leaf water potential, net photosynthesis and leaf extension rate were significantly higher in the wild ecotype than in the commercial cultivar. Meristem density was reduced after freezing in both ecotypes, but was more pronounced in the commercial cultivar (98.5%) than in the wild ecotype (80%). Thus, the two ecotypes coming from different environments, exhibited different morphological and physiological responses to exposure to freezing temperatures.
Fil: Fabbri, Liliana Teresa. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Ploschuk, Edmundo Leonardo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: López, María Virginia. Universidad de Buenos Aires. Facultad de Agronomía; Argentina
Fil: Insausti, Pedro. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
Fil: Rua, Gabriel Hugo. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario; Argentina
description Morphological and physiological responses to freezing were evaluated in two ecotypes of the perennial turfgrass Paspalum vaginatum. Leaf extension rate, number of active meristems, leaf water potential and net photosynthesis were measured on plants of both a commercial cultivar, ‘Sea Isle 2000’, and a wild ecotype from the Flooding Pampa grasslands of Argentina. Plants were propagated by cloning, cultivated in pots, and examined during 18 consecutive days under two treatments: a non-frozen control treatment (15.5±7 °C) and a frozen treatment with two stages: Stage 1 with four hours of freezing stress for 10 nights (-5°C), and Stage 2 with 12 hours of freezing stress for eight nights (five nights at -5oC and three nights at -8°C). After these treatments, plants were returned to the outside environment to evaluate shoot injury and post-freezing recovery. Leaf water potential, net photosynthesis and leaf extension rate were significantly higher in the wild ecotype than in the commercial cultivar. Meristem density was reduced after freezing in both ecotypes, but was more pronounced in the commercial cultivar (98.5%) than in the wild ecotype (80%). Thus, the two ecotypes coming from different environments, exhibited different morphological and physiological responses to exposure to freezing temperatures.
publishDate 2016
dc.date.none.fl_str_mv 2016-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/118299
Fabbri, Liliana Teresa; Ploschuk, Edmundo Leonardo; López, María Virginia; Insausti, Pedro; Rua, Gabriel Hugo; Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae); Sociedade Botanica do Brasil; Acta Botanica Brasilica; 30; 1; 1-2016; 152-156
0102-3306
1677-941X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/118299
identifier_str_mv Fabbri, Liliana Teresa; Ploschuk, Edmundo Leonardo; López, María Virginia; Insausti, Pedro; Rua, Gabriel Hugo; Freeze tolerance differs between two ecotypes of Paspalum vaginatum (Poaceae); Sociedade Botanica do Brasil; Acta Botanica Brasilica; 30; 1; 1-2016; 152-156
0102-3306
1677-941X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000100152&lng=en&nrm=iso&tlng=en
info:eu-repo/semantics/altIdentifier/doi/10.1590/0102-33062015abb0233
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Sociedade Botanica do Brasil
publisher.none.fl_str_mv Sociedade Botanica do Brasil
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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