PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05

Detalhes bibliográficos
Autor(a) principal: Tatagiba, Sandro Dan
Data de Publicação: 2014
Outros Autores: Moraes, Gustavo Adolfo Bevitori Kling, Nascimento, Kelly Juliane Telles, Peloso, Anelisa Figueiredo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Engenharia na Agricultura
Texto Completo: https://periodicos.ufv.br/reveng/article/view/444
Resumo: The aim of this study was to evaluate gas exchange, fluorescence parameters of chlorophyll a, photosynthetic pigment concentration, and osmotic potential in tomato plants subjected to increasing salt concentrations. For this purpose tomato plants, cultivar Santa Clara, were grown in 5dm-3 pots containing Hoagland nutrient solution and subjected to treatments of 0, 50, 100 and 150 mM NaCl. The experiment was conducted in a greenhouse of the University Federal de Viçosa in a completely randomized design with four replications. Each experimental unit consisted of one pot containing two plants. The results showed that the osmotic potential in leaves and roots decreased significantly as the NaCl concentration in the nutrient solution increased by detecting the elevation of stress on the plants. The use of energy for the photosynthetic processes and dissipation of excess energy in photosynthetic machinery was compromised by increasing salt concentrations imposed by the treatments, reducing photosynthesis and photochemical efficiency demonstrated by gas exchange and the fluorescence parameters of chlorophyll a, indicating that there was damage to the photosynthetic apparatus in the biochemical phase. The photosynthetic pigments decreased significantly with increasing salt concentration, limiting the absorption of photosynthetically active radiation.
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spelling PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05LIMITAÇÕES FOTOSSINTÉTICAS EM FOLHAS DE PLANTAS DE TOMATEIRO SUBMETIDAS A CRESCENTES CONCENTRAÇÕES SALINAS - DOI: 10.13083/1414-3984.v22n02a05estresse salinofluorescência da clorofila aSolanum lycopersicumpigmentos fotossintéticostrocas gasosasThe aim of this study was to evaluate gas exchange, fluorescence parameters of chlorophyll a, photosynthetic pigment concentration, and osmotic potential in tomato plants subjected to increasing salt concentrations. For this purpose tomato plants, cultivar Santa Clara, were grown in 5dm-3 pots containing Hoagland nutrient solution and subjected to treatments of 0, 50, 100 and 150 mM NaCl. The experiment was conducted in a greenhouse of the University Federal de Viçosa in a completely randomized design with four replications. Each experimental unit consisted of one pot containing two plants. The results showed that the osmotic potential in leaves and roots decreased significantly as the NaCl concentration in the nutrient solution increased by detecting the elevation of stress on the plants. The use of energy for the photosynthetic processes and dissipation of excess energy in photosynthetic machinery was compromised by increasing salt concentrations imposed by the treatments, reducing photosynthesis and photochemical efficiency demonstrated by gas exchange and the fluorescence parameters of chlorophyll a, indicating that there was damage to the photosynthetic apparatus in the biochemical phase. The photosynthetic pigments decreased significantly with increasing salt concentration, limiting the absorption of photosynthetically active radiation.O objetivo deste trabalho foi avaliar as trocas gasosas, os parâmetros de fluorescência da clorofila a, a concentração de pigmentos fotossintéticos e o potencial osmótico em plantas de tomateiro submetidas a crescentes concentrações salinas. Para esta finalidade, plantas de tomateiro do cultivar Santa Clara foram cultivadas em vasos de 5 dm3 contendo solução nutritiva de Hoagland e submetidas aos tratamentos de 0, 50, 100 e 150 mmol L-1 de NaCl. O experimento foi realizado em casa de vegetação no Campus da Universidade Federal de Viçosa, num delineamento inteiramente casualizado com quatro repetições. Cada unidade experimental foi constituída por um vaso contendo duas plantas. Os resultados mostraram que o potencial osmótico nas folhas e nas raízes apresentaram reduções significativas à medida que se aumentava a concentração de NaCl na solução nutritiva, detectando o aumento do estresse sobre as plantas. A utilização da energia para os processos fotossintéticos e a capacidade de dissipação do excesso de energia na maquinaria fotossintética foi comprometida pelas crescentes concentrações salinas impostas pelos tratamentos, reduzindo a fotossíntese e o rendimento fotoquímico, demonstrado pelas trocas gasosas e pelos parâmetros de fluorescência de clorofila a, evidenciando que houve dano ao aparato fotossintético na fase bioquímica. As concentrações de pigmentos fotossintéticos diminuíram significativamente com o aumento na concentração salina, limitando a absorção da radiação fotossinteticamente ativa.Universidade Federal de Viçosa - UFV2014-04-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/reveng/article/view/44410.13083/reveng.v22i2.488Engineering in Agriculture; Vol. 22 No. 2 (2014); 138-149Revista Engenharia na Agricultura - REVENG; v. 22 n. 2 (2014); 138-1492175-68131414-398410.13083/reveng.v22i2reponame:Engenharia na Agriculturainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/reveng/article/view/444/314Tatagiba, Sandro DanMoraes, Gustavo Adolfo Bevitori KlingNascimento, Kelly Juliane TellesPeloso, Anelisa Figueiredoinfo:eu-repo/semantics/openAccess2023-01-19T13:21:40Zoai:ojs.periodicos.ufv.br:article/444Revistahttps://periodicos.ufv.br/revengPUBhttps://periodicos.ufv.br/reveng/oairevistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br2175-68131414-3984opendoar:2023-01-19T13:21:40Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
LIMITAÇÕES FOTOSSINTÉTICAS EM FOLHAS DE PLANTAS DE TOMATEIRO SUBMETIDAS A CRESCENTES CONCENTRAÇÕES SALINAS - DOI: 10.13083/1414-3984.v22n02a05
title PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
spellingShingle PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
Tatagiba, Sandro Dan
estresse salino
fluorescência da clorofila a
Solanum lycopersicum
pigmentos fotossintéticos
trocas gasosas
title_short PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
title_full PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
title_fullStr PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
title_full_unstemmed PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
title_sort PHOTOSYNTHETIC LIMITATIONS IN LEAVES OF TOMATO PLANTS SUBJECTED TO INCREASING SALT CONCENTRATIONS - DOI: 10.13083/1414-3984.v22n02a05
author Tatagiba, Sandro Dan
author_facet Tatagiba, Sandro Dan
Moraes, Gustavo Adolfo Bevitori Kling
Nascimento, Kelly Juliane Telles
Peloso, Anelisa Figueiredo
author_role author
author2 Moraes, Gustavo Adolfo Bevitori Kling
Nascimento, Kelly Juliane Telles
Peloso, Anelisa Figueiredo
author2_role author
author
author
dc.contributor.author.fl_str_mv Tatagiba, Sandro Dan
Moraes, Gustavo Adolfo Bevitori Kling
Nascimento, Kelly Juliane Telles
Peloso, Anelisa Figueiredo
dc.subject.por.fl_str_mv estresse salino
fluorescência da clorofila a
Solanum lycopersicum
pigmentos fotossintéticos
trocas gasosas
topic estresse salino
fluorescência da clorofila a
Solanum lycopersicum
pigmentos fotossintéticos
trocas gasosas
description The aim of this study was to evaluate gas exchange, fluorescence parameters of chlorophyll a, photosynthetic pigment concentration, and osmotic potential in tomato plants subjected to increasing salt concentrations. For this purpose tomato plants, cultivar Santa Clara, were grown in 5dm-3 pots containing Hoagland nutrient solution and subjected to treatments of 0, 50, 100 and 150 mM NaCl. The experiment was conducted in a greenhouse of the University Federal de Viçosa in a completely randomized design with four replications. Each experimental unit consisted of one pot containing two plants. The results showed that the osmotic potential in leaves and roots decreased significantly as the NaCl concentration in the nutrient solution increased by detecting the elevation of stress on the plants. The use of energy for the photosynthetic processes and dissipation of excess energy in photosynthetic machinery was compromised by increasing salt concentrations imposed by the treatments, reducing photosynthesis and photochemical efficiency demonstrated by gas exchange and the fluorescence parameters of chlorophyll a, indicating that there was damage to the photosynthetic apparatus in the biochemical phase. The photosynthetic pigments decreased significantly with increasing salt concentration, limiting the absorption of photosynthetically active radiation.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/reveng/article/view/444
10.13083/reveng.v22i2.488
url https://periodicos.ufv.br/reveng/article/view/444
identifier_str_mv 10.13083/reveng.v22i2.488
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufv.br/reveng/article/view/444/314
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 Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv Engineering in Agriculture; Vol. 22 No. 2 (2014); 138-149
Revista Engenharia na Agricultura - REVENG; v. 22 n. 2 (2014); 138-149
2175-6813
1414-3984
10.13083/reveng.v22i2
reponame:Engenharia na Agricultura
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str Engenharia na Agricultura
collection Engenharia na Agricultura
repository.name.fl_str_mv Engenharia na Agricultura - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv revistaengenharianagricultura@gmail.com||andrerosa@ufv.br||tramitacao.reveng@gmail.com|| reveng@ufv.br
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