Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11270-022-05539-3 http://hdl.handle.net/11449/230400 |
Resumo: | Silicon (Si) is known as an attenuator for water deficit through increasing water status. The mechanisms involved in Si to mitigate this stress may be linked to decreasing oxidative stress and increasing phenolic compounds, associated with stoichiometric homeostasis of carbon (C), nitrogen (N), and Si, although there is a lack of research especially in forage crops. This research aimed to evaluate whether the supply of Si via fertigation improves the antioxidant defense system and modifies the C/N/Si stoichiometry and the growth of two cultivars of Panicum maximum cultivated under two soil water regimes (70 and 40% water retention capacity). Two experiments were developed, and the same treatments were applied using a 2 × 2 factorial arrangement, with Si applied via fertigation (2.5 mmol L−1) to the soil, while the control (without Si) was combined with two levels of soil moisture (70 and 40% of the soil water retention capacity). The two cultivars showed high accumulation of silicon in the shoot, low C content, low C/Si and C/N ratios, and high nutritional efficiency for the use of C in both water conditions. This is related to the potential of the Si to provide the greater antioxidant defense owing to higher production of phenolic compounds and decreased electrolyte leakage index. There was an increase in relative water content, leaf water potential, total chlorophyll content, and quantum efficiency of photosystem II, as shown by greater growth and dry mass production. Si application is a promising strategy to mitigate water deficit, ensuring new physiological and nutritional homeostasis, contributing to a more sustainable agriculture by means of feeding the herds that depend on pasturelands. |
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Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of SiliconAbiotic stressFertirrigationForagePlant nutritionWater restrictionSilicon (Si) is known as an attenuator for water deficit through increasing water status. The mechanisms involved in Si to mitigate this stress may be linked to decreasing oxidative stress and increasing phenolic compounds, associated with stoichiometric homeostasis of carbon (C), nitrogen (N), and Si, although there is a lack of research especially in forage crops. This research aimed to evaluate whether the supply of Si via fertigation improves the antioxidant defense system and modifies the C/N/Si stoichiometry and the growth of two cultivars of Panicum maximum cultivated under two soil water regimes (70 and 40% water retention capacity). Two experiments were developed, and the same treatments were applied using a 2 × 2 factorial arrangement, with Si applied via fertigation (2.5 mmol L−1) to the soil, while the control (without Si) was combined with two levels of soil moisture (70 and 40% of the soil water retention capacity). The two cultivars showed high accumulation of silicon in the shoot, low C content, low C/Si and C/N ratios, and high nutritional efficiency for the use of C in both water conditions. This is related to the potential of the Si to provide the greater antioxidant defense owing to higher production of phenolic compounds and decreased electrolyte leakage index. There was an increase in relative water content, leaf water potential, total chlorophyll content, and quantum efficiency of photosystem II, as shown by greater growth and dry mass production. Si application is a promising strategy to mitigate water deficit, ensuring new physiological and nutritional homeostasis, contributing to a more sustainable agriculture by means of feeding the herds that depend on pasturelands.Laboratory of Plant Nutrition Department of Agricultural Production Sciences - Soil and Fertilizer Sector School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Prof. Paulo Donato Castellane Avenue s/n, São Paulo, P. C. 14884900Laboratory of Nutrient Cycling Center of Nuclear Energy in Agriculture University of São Paulo (USP), Centenário Avenue 303, São Paulo, P. C. 13400970Laboratory of Plant Nutrition Department of Agricultural Production Sciences - Soil and Fertilizer Sector School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Prof. Paulo Donato Castellane Avenue s/n, São Paulo, P. C. 14884900Universidade Estadual Paulista (UNESP)Universidade de São Paulo (USP)Rocha, Juan Ricardo [UNESP]de Mello Prado, Renato [UNESP]de Cassia Piccolo, Marisa2022-04-29T08:39:37Z2022-04-29T08:39:37Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s11270-022-05539-3Water, Air, and Soil Pollution, v. 233, n. 2, 2022.1573-29320049-6979http://hdl.handle.net/11449/23040010.1007/s11270-022-05539-32-s2.0-85124735147Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengWater, Air, and Soil Pollutioninfo:eu-repo/semantics/openAccess2024-06-07T14:22:52Zoai:repositorio.unesp.br:11449/230400Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:42:01.058702Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
title |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
spellingShingle |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon Rocha, Juan Ricardo [UNESP] Abiotic stress Fertirrigation Forage Plant nutrition Water restriction |
title_short |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
title_full |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
title_fullStr |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
title_full_unstemmed |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
title_sort |
Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon |
author |
Rocha, Juan Ricardo [UNESP] |
author_facet |
Rocha, Juan Ricardo [UNESP] de Mello Prado, Renato [UNESP] de Cassia Piccolo, Marisa |
author_role |
author |
author2 |
de Mello Prado, Renato [UNESP] de Cassia Piccolo, Marisa |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Rocha, Juan Ricardo [UNESP] de Mello Prado, Renato [UNESP] de Cassia Piccolo, Marisa |
dc.subject.por.fl_str_mv |
Abiotic stress Fertirrigation Forage Plant nutrition Water restriction |
topic |
Abiotic stress Fertirrigation Forage Plant nutrition Water restriction |
description |
Silicon (Si) is known as an attenuator for water deficit through increasing water status. The mechanisms involved in Si to mitigate this stress may be linked to decreasing oxidative stress and increasing phenolic compounds, associated with stoichiometric homeostasis of carbon (C), nitrogen (N), and Si, although there is a lack of research especially in forage crops. This research aimed to evaluate whether the supply of Si via fertigation improves the antioxidant defense system and modifies the C/N/Si stoichiometry and the growth of two cultivars of Panicum maximum cultivated under two soil water regimes (70 and 40% water retention capacity). Two experiments were developed, and the same treatments were applied using a 2 × 2 factorial arrangement, with Si applied via fertigation (2.5 mmol L−1) to the soil, while the control (without Si) was combined with two levels of soil moisture (70 and 40% of the soil water retention capacity). The two cultivars showed high accumulation of silicon in the shoot, low C content, low C/Si and C/N ratios, and high nutritional efficiency for the use of C in both water conditions. This is related to the potential of the Si to provide the greater antioxidant defense owing to higher production of phenolic compounds and decreased electrolyte leakage index. There was an increase in relative water content, leaf water potential, total chlorophyll content, and quantum efficiency of photosystem II, as shown by greater growth and dry mass production. Si application is a promising strategy to mitigate water deficit, ensuring new physiological and nutritional homeostasis, contributing to a more sustainable agriculture by means of feeding the herds that depend on pasturelands. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-29T08:39:37Z 2022-04-29T08:39:37Z 2022-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s11270-022-05539-3 Water, Air, and Soil Pollution, v. 233, n. 2, 2022. 1573-2932 0049-6979 http://hdl.handle.net/11449/230400 10.1007/s11270-022-05539-3 2-s2.0-85124735147 |
url |
http://dx.doi.org/10.1007/s11270-022-05539-3 http://hdl.handle.net/11449/230400 |
identifier_str_mv |
Water, Air, and Soil Pollution, v. 233, n. 2, 2022. 1573-2932 0049-6979 10.1007/s11270-022-05539-3 2-s2.0-85124735147 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Water, Air, and Soil Pollution |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128267813650432 |