Chitosan application in the induction of water deficit tolerance in maize plants
The present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of differen...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Eduem (Editora da Universidade Estadual de Maringá)
2019-11-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42463 |
| _version_ | 1818403527162068992 |
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| author | Lorena Gabriela Almeida Paulo César Magalhães Décio Karam Eder Marcos da Silva Amauri Alves Alvarenga |
| author_facet | Lorena Gabriela Almeida Paulo César Magalhães Décio Karam Eder Marcos da Silva Amauri Alves Alvarenga |
| author_sort | Lorena Gabriela Almeida |
| collection | DOAJ |
| description | The present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress. |
| first_indexed | 2024-12-14T08:25:40Z |
| format | Article |
| id | doaj.art-32bc145941f74362aa65993a22900847 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-12-14T08:25:40Z |
| publishDate | 2019-11-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-32bc145941f74362aa65993a229008472022-12-21T23:09:39ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212019-11-0142e42463e4246310.4025/actasciagron.v42i1.4246342463Chitosan application in the induction of water deficit tolerance in maize plantsLorena Gabriela Almeida0Paulo César Magalhães1Décio Karam2Eder Marcos da Silva3Amauri Alves Alvarenga4Universidade Federal de LavrasEmpresa Brasileira de Pesquisa AgropecuariaEmpresa Brasileira de Pesquisa AgropecuáriaUniversidade Federal de LavrasUniversidade Federal de LavrasThe present research seeks to elucidate the feasibility of chitosan (CHT) in the induction of water deficit tolerance in different maize hybrids, contrasting tolerance to water restriction, tolerance and sensitivity. The maize plants were subjected to water deficit and foliar application of different chitosan doses (60, 100, 140, and 180 mg L-1) at the pre-flowering growth stage and evaluated during the stress period of fifteen days. To understand the induction behaviour of the tolerance to water restriction, biophysical parameters, such as water potential, relative water content and chlorophyll content, gas exchange, and biochemical assays, were quantified based on the activity of SOD, CAT, APX, and PAL antioxidant enzymes, lipid peroxidation activity and hydrogen peroxide content. Among the treatments, maize plants subjected to chitosan foliar application at a dose of 140 mg L-1 presented similar behavioural responses to plants under favourable irrigation conditions. Such positive responses are related to the high degree of activity of antioxidant enzymes, gas exchange and low levels of lipid peroxidation and hydrogen peroxide. The results support the potential use of CHT to increase tolerance to water stress.http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42463antiperspirant; antioxidant enzymes; water stress; gas exchange. |
| spellingShingle | Lorena Gabriela Almeida Paulo César Magalhães Décio Karam Eder Marcos da Silva Amauri Alves Alvarenga Chitosan application in the induction of water deficit tolerance in maize plants Acta Scientiarum: Agronomy antiperspirant; antioxidant enzymes; water stress; gas exchange. |
| title | Chitosan application in the induction of water deficit tolerance in maize plants |
| title_full | Chitosan application in the induction of water deficit tolerance in maize plants |
| title_fullStr | Chitosan application in the induction of water deficit tolerance in maize plants |
| title_full_unstemmed | Chitosan application in the induction of water deficit tolerance in maize plants |
| title_short | Chitosan application in the induction of water deficit tolerance in maize plants |
| title_sort | chitosan application in the induction of water deficit tolerance in maize plants |
| topic | antiperspirant; antioxidant enzymes; water stress; gas exchange. |
| url | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42463 |
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