Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought
The present study aimed to determine if photosynthesis interferes with the modulation of antioxidant compounds in young <i>Euterpe oleracea</i> plants exposed to water deficiencies. A factorial, completely randomised experimental design was employed, and two water conditions (water defic...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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AcademicPres
2014-06-01
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| Series: | Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
| Online Access: | http://www.notulaebotanicae.ro/index.php/nbha/article/view/9336 |
| _version_ | 1818865815790813184 |
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| author | Maria Antonia Machado BARBOSA Allan Klynger da Silva LOBATO Thaís Soares PEREIRA Gélia Dinah Monteiro VIANA José Ricardo Santos BARBOSA Kelly Nayara Nascimento COELHO Leila Sobral SAMPAIO Benedito Gomes dos SANTOS FILHO Joaquim Albenísio Gomes SILVEIRA |
| author_facet | Maria Antonia Machado BARBOSA Allan Klynger da Silva LOBATO Thaís Soares PEREIRA Gélia Dinah Monteiro VIANA José Ricardo Santos BARBOSA Kelly Nayara Nascimento COELHO Leila Sobral SAMPAIO Benedito Gomes dos SANTOS FILHO Joaquim Albenísio Gomes SILVEIRA |
| author_sort | Maria Antonia Machado BARBOSA |
| collection | DOAJ |
| description | The present study aimed to determine if photosynthesis interferes with the modulation of antioxidant compounds in young <i>Euterpe oleracea</i> plants exposed to water deficiencies. A factorial, completely randomised experimental design was employed, and two water conditions (water deficit and control) and four evaluation points (0, 6, 12 and 18 days) were used, resulting in a total of eight measurements. The measured parameters included the water content and temperature of the leaf, gas exchange, electrolyte leakage, and antioxidant content. Compared to the control treatment, the net loss of photosynthesis due to water restriction increased by approximately 100% on the 18th day of drought. The ascorbate levels decreased due to water restriction, presenting significant differences on the 12th and 18th day. In some cases, the water deficit increased the glutathione content; however, significant effects were only observed on the 18th day after irrigation suspension. Water deficits had a negative impact on stomatal conductance, net photosynthesis rate, transpiration rate, and instantaneous carboxylation efficiency. Additionally, increases in the glutathione content, electrolyte leakage, and malondialdehyde content were observed; however, the ascorbate content decreased. Our results confirmed that the rate of photosynthesis interfered with the modulation of ascorbate and glutathione in young <i>Euterpe oleracea</i> plants exposed to drought. |
| first_indexed | 2024-12-19T10:53:33Z |
| format | Article |
| id | doaj.art-e4db5be0acc0435cb378816cda430394 |
| institution | Directory Open Access Journal |
| issn | 0255-965X 1842-4309 |
| language | English |
| last_indexed | 2024-12-19T10:53:33Z |
| publishDate | 2014-06-01 |
| publisher | AcademicPres |
| record_format | Article |
| series | Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
| spelling | doaj.art-e4db5be0acc0435cb378816cda4303942022-12-21T20:24:54ZengAcademicPresNotulae Botanicae Horti Agrobotanici Cluj-Napoca0255-965X1842-43092014-06-0142111912710.15835/nbha42193367949Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to DroughtMaria Antonia Machado BARBOSA0Allan Klynger da Silva LOBATO1Thaís Soares PEREIRA2Gélia Dinah Monteiro VIANA3José Ricardo Santos BARBOSA4Kelly Nayara Nascimento COELHO5Leila Sobral SAMPAIO6Benedito Gomes dos SANTOS FILHO7Joaquim Albenísio Gomes SILVEIRA8Núcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasNúcleo de Pesquisa Vegetal Básica e Aplicada, Universidade Federal Rural da Amazônia, ParagominasLaboratório de Metabolismo de Plantas, Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceara, FortalezaThe present study aimed to determine if photosynthesis interferes with the modulation of antioxidant compounds in young <i>Euterpe oleracea</i> plants exposed to water deficiencies. A factorial, completely randomised experimental design was employed, and two water conditions (water deficit and control) and four evaluation points (0, 6, 12 and 18 days) were used, resulting in a total of eight measurements. The measured parameters included the water content and temperature of the leaf, gas exchange, electrolyte leakage, and antioxidant content. Compared to the control treatment, the net loss of photosynthesis due to water restriction increased by approximately 100% on the 18th day of drought. The ascorbate levels decreased due to water restriction, presenting significant differences on the 12th and 18th day. In some cases, the water deficit increased the glutathione content; however, significant effects were only observed on the 18th day after irrigation suspension. Water deficits had a negative impact on stomatal conductance, net photosynthesis rate, transpiration rate, and instantaneous carboxylation efficiency. Additionally, increases in the glutathione content, electrolyte leakage, and malondialdehyde content were observed; however, the ascorbate content decreased. Our results confirmed that the rate of photosynthesis interfered with the modulation of ascorbate and glutathione in young <i>Euterpe oleracea</i> plants exposed to drought.http://www.notulaebotanicae.ro/index.php/nbha/article/view/9336 |
| spellingShingle | Maria Antonia Machado BARBOSA Allan Klynger da Silva LOBATO Thaís Soares PEREIRA Gélia Dinah Monteiro VIANA José Ricardo Santos BARBOSA Kelly Nayara Nascimento COELHO Leila Sobral SAMPAIO Benedito Gomes dos SANTOS FILHO Joaquim Albenísio Gomes SILVEIRA Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought Notulae Botanicae Horti Agrobotanici Cluj-Napoca |
| title | Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought |
| title_full | Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought |
| title_fullStr | Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought |
| title_full_unstemmed | Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought |
| title_short | Photosynthesis-Involvement in Modulation of Ascorbate and Glutathione in <i> Euterpe oleracea</i> Plants Exposed to Drought |
| title_sort | photosynthesis involvement in modulation of ascorbate and glutathione in i euterpe oleracea i plants exposed to drought |
| url | http://www.notulaebotanicae.ro/index.php/nbha/article/view/9336 |
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