Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Theoretical and Experimental Plant Physiology |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2197-00252013000100006 |
Resumo: | Rock field plant species present several adaptations to the climatic characteristics and seasonality of this habitat. In this study, we evaluate under field conditions the seasonal changes in non-structural carbohydrate accumulation in tuberous organs of Gomphrena marginata. Tuber fragments of plants of G. marginata were sampled monthly for a year (August 2010 to July 2011) in a rock-field area in southeastern Brazil. Quantitative analyses of total fructose, fructo-oligosaccharides, fructo-polysaccharides, reducing sugars and free proline were carried out. Qualitative analyses of carbohydrates were also performed by thin layer chromatography (TLC) and high performance anion exchange chromatography (HPAEC/PAD). Soil moisture was evaluated by gravimetry and plant water status was evaluated by measuring the relative water content (RWC) and water potential (Ψw) of underground organs. Throughout the analyzed period, a well-marked seasonality of fructan accumulation was observed in tuberous roots of G. marginata correlating significantly with seasonal changes in soil water availability. In the rainy period (October to February), the content of fructo-polysaccharides decrease while during the dry and quiescent growth period (April to September) a high accumulation of fructo-polysaccharides was observed without changes in the RWC of tuberous roots, suggesting that cell osmoregulation contributed to water status maintenance in G. marginata. Our study presents a second species of Amaranthaceae that accumulates fructans as its main reserve carbohydrate, which can be an important strategy for survival in an environment characterized by a long dry period. |
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Theoretical and Experimental Plant Physiology |
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Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditionsfructansosmoregulationseasonalityRock field plant species present several adaptations to the climatic characteristics and seasonality of this habitat. In this study, we evaluate under field conditions the seasonal changes in non-structural carbohydrate accumulation in tuberous organs of Gomphrena marginata. Tuber fragments of plants of G. marginata were sampled monthly for a year (August 2010 to July 2011) in a rock-field area in southeastern Brazil. Quantitative analyses of total fructose, fructo-oligosaccharides, fructo-polysaccharides, reducing sugars and free proline were carried out. Qualitative analyses of carbohydrates were also performed by thin layer chromatography (TLC) and high performance anion exchange chromatography (HPAEC/PAD). Soil moisture was evaluated by gravimetry and plant water status was evaluated by measuring the relative water content (RWC) and water potential (Ψw) of underground organs. Throughout the analyzed period, a well-marked seasonality of fructan accumulation was observed in tuberous roots of G. marginata correlating significantly with seasonal changes in soil water availability. In the rainy period (October to February), the content of fructo-polysaccharides decrease while during the dry and quiescent growth period (April to September) a high accumulation of fructo-polysaccharides was observed without changes in the RWC of tuberous roots, suggesting that cell osmoregulation contributed to water status maintenance in G. marginata. Our study presents a second species of Amaranthaceae that accumulates fructans as its main reserve carbohydrate, which can be an important strategy for survival in an environment characterized by a long dry period.Sociedade Brasileira de Fisiologia Vegetal2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2197-00252013000100006Theoretical and Experimental Plant Physiology v.25 n.1 2013reponame:Theoretical and Experimental Plant Physiologyinstname:Sociedade Brasileira de Fisiologia Vegetal (SBFV)instacron:SBFV10.1590/S2197-00252013000100006info:eu-repo/semantics/openAccessSilva,Fernanda Gomes daCangussu,Lílian Mendes BorburemaPaula,Sandro Lânio Abreu deMelo,Geraldo AclécioSilva,Emerson Alveseng2015-06-23T00:00:00Zoai:scielo:S2197-00252013000100006Revistahttps://www.springer.com/journal/40626ONGhttps://old.scielo.br/oai/scielo-oai.php||bjpp.sbfv@gmail.com2197-00252197-0025opendoar:2015-06-23T00:00Theoretical and Experimental Plant Physiology - Sociedade Brasileira de Fisiologia Vegetal (SBFV)false |
dc.title.none.fl_str_mv |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
title |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
spellingShingle |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions Silva,Fernanda Gomes da fructans osmoregulation seasonality |
title_short |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
title_full |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
title_fullStr |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
title_full_unstemmed |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
title_sort |
Seasonal changes in fructan accumulation in the underground organs of Gomphrena marginata Seub. (Amaranthaceae) under rock-field conditions |
author |
Silva,Fernanda Gomes da |
author_facet |
Silva,Fernanda Gomes da Cangussu,Lílian Mendes Borburema Paula,Sandro Lânio Abreu de Melo,Geraldo Aclécio Silva,Emerson Alves |
author_role |
author |
author2 |
Cangussu,Lílian Mendes Borburema Paula,Sandro Lânio Abreu de Melo,Geraldo Aclécio Silva,Emerson Alves |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Silva,Fernanda Gomes da Cangussu,Lílian Mendes Borburema Paula,Sandro Lânio Abreu de Melo,Geraldo Aclécio Silva,Emerson Alves |
dc.subject.por.fl_str_mv |
fructans osmoregulation seasonality |
topic |
fructans osmoregulation seasonality |
description |
Rock field plant species present several adaptations to the climatic characteristics and seasonality of this habitat. In this study, we evaluate under field conditions the seasonal changes in non-structural carbohydrate accumulation in tuberous organs of Gomphrena marginata. Tuber fragments of plants of G. marginata were sampled monthly for a year (August 2010 to July 2011) in a rock-field area in southeastern Brazil. Quantitative analyses of total fructose, fructo-oligosaccharides, fructo-polysaccharides, reducing sugars and free proline were carried out. Qualitative analyses of carbohydrates were also performed by thin layer chromatography (TLC) and high performance anion exchange chromatography (HPAEC/PAD). Soil moisture was evaluated by gravimetry and plant water status was evaluated by measuring the relative water content (RWC) and water potential (Ψw) of underground organs. Throughout the analyzed period, a well-marked seasonality of fructan accumulation was observed in tuberous roots of G. marginata correlating significantly with seasonal changes in soil water availability. In the rainy period (October to February), the content of fructo-polysaccharides decrease while during the dry and quiescent growth period (April to September) a high accumulation of fructo-polysaccharides was observed without changes in the RWC of tuberous roots, suggesting that cell osmoregulation contributed to water status maintenance in G. marginata. Our study presents a second species of Amaranthaceae that accumulates fructans as its main reserve carbohydrate, which can be an important strategy for survival in an environment characterized by a long dry period. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 |
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=S2197-00252013000100006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2197-00252013000100006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S2197-00252013000100006 |
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 |
Sociedade Brasileira de Fisiologia Vegetal |
publisher.none.fl_str_mv |
Sociedade Brasileira de Fisiologia Vegetal |
dc.source.none.fl_str_mv |
Theoretical and Experimental Plant Physiology v.25 n.1 2013 reponame:Theoretical and Experimental Plant Physiology instname:Sociedade Brasileira de Fisiologia Vegetal (SBFV) instacron:SBFV |
instname_str |
Sociedade Brasileira de Fisiologia Vegetal (SBFV) |
instacron_str |
SBFV |
institution |
SBFV |
reponame_str |
Theoretical and Experimental Plant Physiology |
collection |
Theoretical and Experimental Plant Physiology |
repository.name.fl_str_mv |
Theoretical and Experimental Plant Physiology - Sociedade Brasileira de Fisiologia Vegetal (SBFV) |
repository.mail.fl_str_mv |
||bjpp.sbfv@gmail.com |
_version_ |
1754824595224920064 |