Mitigation of Water Deficit in Two Cultivars of Panicum maximum by the Application of Silicon

Detalhes bibliográficos
Autor(a) principal: Rocha, Juan Ricardo [UNESP]
Data de Publicação: 2022
Outros Autores: de Mello Prado, Renato [UNESP], de Cassia Piccolo, Marisa
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.
id UNSP_a582ee42b6ba8be39051c72a958d8773
oai_identifier_str oai:repositorio.unesp.br:11449/230400
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling 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