Exogenous superoxide dismutase alleviates drought stress in cotton genotypes
In drought-tolerant plants, adverse effects caused by water deficit can be mitigated by antioxidant enzymes, which activate the plant’s defense mechanisms. This study aimed to evaluate the mitigating effect of exogenous superoxide dismutase (SOD) supplementation on cotton...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Goiás
2025-07-01
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| Series: | Pesquisa Agropecuária Tropical |
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| Online Access: | https://revistas.ufg.br/pat/article/view/82354/43178 |
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| author | Andrezza Maia de Lima Francisco de Assis da Silva Mirandy dos Santos Dias Rennan Fernandes Pereira Aline Dayanna Alves de Lima Marcelino Daniela Duarte Barbosa Maria de Fátima Caetano da Silva José Jaime Vasconcelos Cavalcanti Roseane Cavalcanti dos Santos Pedro Dantas Fernandes |
| author_facet | Andrezza Maia de Lima Francisco de Assis da Silva Mirandy dos Santos Dias Rennan Fernandes Pereira Aline Dayanna Alves de Lima Marcelino Daniela Duarte Barbosa Maria de Fátima Caetano da Silva José Jaime Vasconcelos Cavalcanti Roseane Cavalcanti dos Santos Pedro Dantas Fernandes |
| author_sort | Andrezza Maia de Lima |
| collection | DOAJ |
| description | In drought-tolerant plants, adverse effects caused by water deficit can be mitigated by antioxidant enzymes, which activate the plant’s defense mechanisms. This study aimed to evaluate the mitigating effect of exogenous superoxide dismutase (SOD) supplementation on cotton plants subjected to drought stress. Four cotton genotypes (BRS Seridó, FM 966, FMT 705 and CNPA 7MH) were grown in a greenhouse and evaluated under the following treatments: control (daily irrigation), drought stress (plants subjected to 6 days without irrigation) and drought stress with exogenous SOD supplementation at concentrations of 11, 22 and 33 μg mL-1. The experimental design was a randomized block arrangement, in a 4 × 5 factorial scheme, with four replications. Plant growth, biomass accumulation and gas exchange parameters were evaluated. Overall, the exogenous SOD supplementation at 33 μg mL-¹effectively mitigated the adverse effects of drought stress on cotton growth and gas exchange, with a more pronounced response observed for the drought-sensitive genotypes. |
| format | Article |
| id | doaj-art-43fbca8a3ef84ea1b2df6e7f7774d8f6 |
| institution | Matheson Library |
| issn | 1983-4063 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Universidade Federal de Goiás |
| record_format | Article |
| series | Pesquisa Agropecuária Tropical |
| spelling | doaj-art-43fbca8a3ef84ea1b2df6e7f7774d8f62025-07-25T19:51:25ZengUniversidade Federal de GoiásPesquisa Agropecuária Tropical1983-40632025-07-0155e8235410.1590/1983-40632025v5582354Exogenous superoxide dismutase alleviates drought stress in cotton genotypesAndrezza Maia de LimaFrancisco de Assis da SilvaMirandy dos Santos DiasRennan Fernandes PereiraAline Dayanna Alves de Lima MarcelinoDaniela Duarte BarbosaMaria de Fátima Caetano da SilvaJosé Jaime Vasconcelos CavalcantiRoseane Cavalcanti dos SantosPedro Dantas FernandesIn drought-tolerant plants, adverse effects caused by water deficit can be mitigated by antioxidant enzymes, which activate the plant’s defense mechanisms. This study aimed to evaluate the mitigating effect of exogenous superoxide dismutase (SOD) supplementation on cotton plants subjected to drought stress. Four cotton genotypes (BRS Seridó, FM 966, FMT 705 and CNPA 7MH) were grown in a greenhouse and evaluated under the following treatments: control (daily irrigation), drought stress (plants subjected to 6 days without irrigation) and drought stress with exogenous SOD supplementation at concentrations of 11, 22 and 33 μg mL-1. The experimental design was a randomized block arrangement, in a 4 × 5 factorial scheme, with four replications. Plant growth, biomass accumulation and gas exchange parameters were evaluated. Overall, the exogenous SOD supplementation at 33 μg mL-¹effectively mitigated the adverse effects of drought stress on cotton growth and gas exchange, with a more pronounced response observed for the drought-sensitive genotypes.https://revistas.ufg.br/pat/article/view/82354/43178gossypium hirsutumwater deficitdrought toleranceantioxidant defense |
| spellingShingle | Andrezza Maia de Lima Francisco de Assis da Silva Mirandy dos Santos Dias Rennan Fernandes Pereira Aline Dayanna Alves de Lima Marcelino Daniela Duarte Barbosa Maria de Fátima Caetano da Silva José Jaime Vasconcelos Cavalcanti Roseane Cavalcanti dos Santos Pedro Dantas Fernandes Exogenous superoxide dismutase alleviates drought stress in cotton genotypes Pesquisa Agropecuária Tropical gossypium hirsutum water deficit drought tolerance antioxidant defense |
| title | Exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| title_full | Exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| title_fullStr | Exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| title_full_unstemmed | Exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| title_short | Exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| title_sort | exogenous superoxide dismutase alleviates drought stress in cotton genotypes |
| topic | gossypium hirsutum water deficit drought tolerance antioxidant defense |
| url | https://revistas.ufg.br/pat/article/view/82354/43178 |
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