Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.)
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UEFS |
Texto Completo: | http://tede2.uefs.br:8080/handle/tede/775 |
Resumo: | Physalis production is little studied in Brazil, especially in the semiarid region, where water deficit is a major constraint for agricultural production, promoting the reduction of yield and plant growth. It's known that exogenous application of nitric oxide (NO) may play an important role in drought-tolerant plants in large crops or underexploited species, such as Physalis angulata. This study aimed at assessing the physiological responses and growth characteristics of P. angulata plants under water deficit, as well as mitigation potential of NO. Water deficit conditions were simulated in two experiments in greenhouse, applying different water availability (100%, 80%, 60%, 40% and 20% of the maximum retention capacity) in the experiment Iand sodium nitroprusside (SNP) concentrations (0, 25, 50, 75 and 100 μM), an exogenous NO donor in the experiment II. For this, water relations, gaseous exchanges, sugar accumulation, foliar activity of nitrate reductase and growth parameters were evaluated. Water relations (water potential and relative water content) were affected mainly in plants under severe water deficit (20%), as well as gas exchanges, with reduction in carbon assimilation, internal carbon, stomatal conductance and transpiration. However, for these plants were observed increases in leaf temperature and water use efficiency. Plants accumulated sugars as a mechanism of acclimatization to severe water deficit, while nitrate reductase activity was reduced. There was maintenance of total dry matter mass accumulation and leaf area under moderate and severe levels of water deficit. Exogenous application of nitric oxide promoted symptoms attenuationon photosynthetic performance, notably carbon assimilation, water use efficiency and chlorophyll content. The NO application promoted a direct relationship between sugar accumulation and leaf water potential. Similarly, NO attenuated symptoms of water scarcity on plant growth, especially plant height, dry matter accumulation and leaf area. P. angulata plants develop important strategies to tolerate water deficit, which may contribute to the establishment of crops under low water availability. Low concentrations of SNP are indicated to mitigate negative effects of water deficit, improving photosynthetic rates, maintenance of leaf water potential and growth |
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Nascimento, Marilza Neves08437113709http://lattes.cnpq.br/707497406584920806033473558http://lattes.cnpq.br/9813586834663479Leite, Romeu da Silva2019-05-28T22:56:01Z2019-02-22LEITE, Romeu da Silva. Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.). 2019. 80f. Dissertação (Mestrado Acadêmico em Recursos Genéticos Vegetais) - Universidade Estadual de Feira de Santana, Feira de Santana, 2019.http://tede2.uefs.br:8080/handle/tede/775Physalis production is little studied in Brazil, especially in the semiarid region, where water deficit is a major constraint for agricultural production, promoting the reduction of yield and plant growth. It's known that exogenous application of nitric oxide (NO) may play an important role in drought-tolerant plants in large crops or underexploited species, such as Physalis angulata. This study aimed at assessing the physiological responses and growth characteristics of P. angulata plants under water deficit, as well as mitigation potential of NO. Water deficit conditions were simulated in two experiments in greenhouse, applying different water availability (100%, 80%, 60%, 40% and 20% of the maximum retention capacity) in the experiment Iand sodium nitroprusside (SNP) concentrations (0, 25, 50, 75 and 100 μM), an exogenous NO donor in the experiment II. For this, water relations, gaseous exchanges, sugar accumulation, foliar activity of nitrate reductase and growth parameters were evaluated. Water relations (water potential and relative water content) were affected mainly in plants under severe water deficit (20%), as well as gas exchanges, with reduction in carbon assimilation, internal carbon, stomatal conductance and transpiration. However, for these plants were observed increases in leaf temperature and water use efficiency. Plants accumulated sugars as a mechanism of acclimatization to severe water deficit, while nitrate reductase activity was reduced. There was maintenance of total dry matter mass accumulation and leaf area under moderate and severe levels of water deficit. Exogenous application of nitric oxide promoted symptoms attenuationon photosynthetic performance, notably carbon assimilation, water use efficiency and chlorophyll content. The NO application promoted a direct relationship between sugar accumulation and leaf water potential. Similarly, NO attenuated symptoms of water scarcity on plant growth, especially plant height, dry matter accumulation and leaf area. P. angulata plants develop important strategies to tolerate water deficit, which may contribute to the establishment of crops under low water availability. Low concentrations of SNP are indicated to mitigate negative effects of water deficit, improving photosynthetic rates, maintenance of leaf water potential and growthA produção de fisális é pouco estudada no Brasil, sobretudo na região semiárida, onde o déficit hídrico é o principal obstáculo para a produção agrícola, promovendo a redução da produtividade e crescimento das plantas. É conhecido que a aplicação de óxido nítrico (NO) pode desempenhar um importante papel em plantas na defesa contra o déficit hídrico, em grandes culturas ou espécies subexploradas, como a Physalis angulata. Dessa forma, objetivou-se avaliar características fisiológicas e de crescimento em plantas de P. angulata sob déficit hídrico, bem como o potencial mitigador do NO.Para isso, as condições de déficit hídrico foram simuladas em dois experimentos em ambiente protegido, aplicando diferentes disponibilidades hídricas (100%, 80%, 60%, 40% e 20%da capacidade máxima de retenção) no experimento I e concentrações de nitroprussiato de sódio (SNP, 0, 25, 50, 75 e 100 μM), um doador exógeno de NOno experimento II. Foram avaliadasas relações hídricas, trocas gasosas, acúmulo de açúcares, atividade foliar da enzima redutase do nitratoe parâmetros de crescimento. As relações hídricas (potencial hídrico e conteúdo relativo de água) foram afetadas principalmente nas plantas sob déficit hídrico severo (20%), bem como as trocas gasosas, com redução na assimilação de carbono, carbono interno, condutância estomática e transpiração. Porém, para essas plantas foram observadosaumentos da temperatura foliar e da eficiência do uso da água.As plantas acumularam açúcares como mecanismo de aclimataçãoao déficit hídrico severo, ao passo que a atividade da redutase do nitrato foi reduzida. Houve manutenção do acúmulo de massa de matéria seca total e área foliar sob níveis moderados e severos de déficit hídrico. A aplicação de óxido nítrico promoveu a atenuação dos efeitos do déficit hídrico sobre a performance fotossintética, notadamente a assimilação de carbono, eficiência no uso da água e teor de clorofila. A aplicação de NO promoveuuma relação direta entre o acúmulo de açúcares e o potencial hídrico foliar. De maneira semelhante, o NO atenuou os sintomas da escassez de água sobre o crescimento das plantas, sobretudo para altura das plantas, acúmulo de massa seca e área foliar. As plantas de Physalis angulata desenvolvem importantes estratégias de tolerância ao déficit hídrico, as quais podem contribuir para o estabelecimento de cultivos sob baixa disponibilidade de água. Baixas concentrações de SNP são indicadas para mitigar os efeitos negativos do déficit hídrico, promovendo a melhoria nas taxas fotossintéticas, minimizando o decréscimodo potencial hídrico foliar e crescimentoSubmitted by Verena Pereira (verenagoncalves@uefs.br) on 2019-05-28T22:56:01Z No. of bitstreams: 1 DISSERTAÇÃO FINAL 25 04 19.pdf: 2165792 bytes, checksum: 2e1e51bdc2bda2f999573f7533487b70 (MD5)Made available in DSpace on 2019-05-28T22:56:01Z (GMT). No. of bitstreams: 1 DISSERTAÇÃO FINAL 25 04 19.pdf: 2165792 bytes, checksum: 2e1e51bdc2bda2f999573f7533487b70 (MD5) Previous issue date: 2019-02-22Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Estadual de Feira de SantanaMestrado Acadêmico em Recursos Genéticos VegetaisUEFSBrasilDEPARTAMENTO DE CIÊNCIAS BIOLÓGICASSolanaceaeEstresse abióticoEspécie subexploradaMitigaçãodo déficit hídricoÓxidonítricoSolanaceaeAbiotic stressUnderexploited speciesWater deficit mitigationNitric oxideGENETICA::GENETICA VEGETALDéficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.)info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis81466464816222418746006006006005026123383450589282-73979202484192807163590462550136975366info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UEFSinstname:Universidade Estadual de Feira de Santana (UEFS)instacron:UEFSORIGINALDISSERTAÇÃO FINAL 25 04 19.pdfDISSERTAÇÃO FINAL 25 04 19.pdfapplication/pdf2165792http://tede2.uefs.br:8080/bitstream/tede/775/2/DISSERTA%C3%87%C3%83O++FINAL+25+04+19.pdf2e1e51bdc2bda2f999573f7533487b70MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-82089http://tede2.uefs.br:8080/bitstream/tede/775/1/license.txt7b5ba3d2445355f386edab96125d42b7MD51tede/7752019-05-28 19:56:01.243oai:tede2.uefs.br:8080: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.uefs.br:8080/PUBhttp://tede2.uefs.br:8080/oai/requestbcuefs@uefs.br|| bcref@uefs.br||bcuefs@uefs.bropendoar:2019-05-28T22:56:01Biblioteca Digital de Teses e Dissertações da UEFS - Universidade Estadual de Feira de Santana (UEFS)false |
dc.title.por.fl_str_mv |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
title |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
spellingShingle |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) Leite, Romeu da Silva Solanaceae Estresse abiótico Espécie subexplorada Mitigaçãodo déficit hídrico Óxidonítrico Solanaceae Abiotic stress Underexploited species Water deficit mitigation Nitric oxide GENETICA::GENETICA VEGETAL |
title_short |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
title_full |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
title_fullStr |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
title_full_unstemmed |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
title_sort |
Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.) |
author |
Leite, Romeu da Silva |
author_facet |
Leite, Romeu da Silva |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Nascimento, Marilza Neves |
dc.contributor.advisor1ID.fl_str_mv |
08437113709 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7074974065849208 |
dc.contributor.authorID.fl_str_mv |
06033473558 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9813586834663479 |
dc.contributor.author.fl_str_mv |
Leite, Romeu da Silva |
contributor_str_mv |
Nascimento, Marilza Neves |
dc.subject.por.fl_str_mv |
Solanaceae Estresse abiótico Espécie subexplorada Mitigaçãodo déficit hídrico Óxidonítrico |
topic |
Solanaceae Estresse abiótico Espécie subexplorada Mitigaçãodo déficit hídrico Óxidonítrico Solanaceae Abiotic stress Underexploited species Water deficit mitigation Nitric oxide GENETICA::GENETICA VEGETAL |
dc.subject.eng.fl_str_mv |
Solanaceae Abiotic stress Underexploited species Water deficit mitigation Nitric oxide |
dc.subject.cnpq.fl_str_mv |
GENETICA::GENETICA VEGETAL |
description |
Physalis production is little studied in Brazil, especially in the semiarid region, where water deficit is a major constraint for agricultural production, promoting the reduction of yield and plant growth. It's known that exogenous application of nitric oxide (NO) may play an important role in drought-tolerant plants in large crops or underexploited species, such as Physalis angulata. This study aimed at assessing the physiological responses and growth characteristics of P. angulata plants under water deficit, as well as mitigation potential of NO. Water deficit conditions were simulated in two experiments in greenhouse, applying different water availability (100%, 80%, 60%, 40% and 20% of the maximum retention capacity) in the experiment Iand sodium nitroprusside (SNP) concentrations (0, 25, 50, 75 and 100 μM), an exogenous NO donor in the experiment II. For this, water relations, gaseous exchanges, sugar accumulation, foliar activity of nitrate reductase and growth parameters were evaluated. Water relations (water potential and relative water content) were affected mainly in plants under severe water deficit (20%), as well as gas exchanges, with reduction in carbon assimilation, internal carbon, stomatal conductance and transpiration. However, for these plants were observed increases in leaf temperature and water use efficiency. Plants accumulated sugars as a mechanism of acclimatization to severe water deficit, while nitrate reductase activity was reduced. There was maintenance of total dry matter mass accumulation and leaf area under moderate and severe levels of water deficit. Exogenous application of nitric oxide promoted symptoms attenuationon photosynthetic performance, notably carbon assimilation, water use efficiency and chlorophyll content. The NO application promoted a direct relationship between sugar accumulation and leaf water potential. Similarly, NO attenuated symptoms of water scarcity on plant growth, especially plant height, dry matter accumulation and leaf area. P. angulata plants develop important strategies to tolerate water deficit, which may contribute to the establishment of crops under low water availability. Low concentrations of SNP are indicated to mitigate negative effects of water deficit, improving photosynthetic rates, maintenance of leaf water potential and growth |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-05-28T22:56:01Z |
dc.date.issued.fl_str_mv |
2019-02-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
LEITE, Romeu da Silva. Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.). 2019. 80f. Dissertação (Mestrado Acadêmico em Recursos Genéticos Vegetais) - Universidade Estadual de Feira de Santana, Feira de Santana, 2019. |
dc.identifier.uri.fl_str_mv |
http://tede2.uefs.br:8080/handle/tede/775 |
identifier_str_mv |
LEITE, Romeu da Silva. Déficit hídrico e sua atenuação em plantas de fisális (Physalis angulata L.). 2019. 80f. Dissertação (Mestrado Acadêmico em Recursos Genéticos Vegetais) - Universidade Estadual de Feira de Santana, Feira de Santana, 2019. |
url |
http://tede2.uefs.br:8080/handle/tede/775 |
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por |
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Universidade Estadual de Feira de Santana |
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UEFS |
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Brasil |
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DEPARTAMENTO DE CIÊNCIAS BIOLÓGICAS |
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Universidade Estadual de Feira de Santana |
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