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 | Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
21/10/2021 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
RIBOLDI, L. B.; DIAS, R. Z.; CASTRO, P. R. de C e; FREITAS, S. T. de. |
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Afiliação: |
LUCAS BAIOCHI RIBOLDI, ESALQ; RAFAELLA ZANETTI DIAS, ESALQ; PAULO ROBERTO DE CAMARGO E CASTRO, ESALQ; SERGIO TONETTO DE FREITAS, CPATSA. |
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Título: |
2,4-Epibrassinolide mechanisms regulating water use efciency and fruit production in tomato plants. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Brazilian Journal of Botany, v. 44, p. 617-627, 2021. |
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DOI: |
https://doi.org/10.1007/s40415-021-00745-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Tomato (Solanum lycopersicum L.) plants are able to adapt to restrictive environmental conditions mainly due to hormones such as brassinosteroids (BRs) that play important roles in determining stomata conductance and leaf transpiration. However, BRs efects on morphological traits like stomata and trichome position, size, and density, as well as on physiological traits resulting in better plant water use efciency (WUE) and productivity, remain poorly understood. The objective of this study was to better understand the 2,4-epibrassinolide (EBL) mechanisms regulating leaf transpiration and WUE that can afect fruit production in tomato plants. According to results, treating tomato plants with exogenous EBL resulted in lower leaf transpiration, mainly from 9 to 16 h during the day, as well as lower stomata conductance and aperture, higher leaf water potential, higher net CO2 assimilation rate, higher number of stomata and trichome on leaf abaxial and adaxial surfaces, and higher plant dry mass accumulation, which improved plant WUE, compared to non-treated plants. EBL treatment also increased fruit size, fruit production per plant, and fruit quality traits such as higher dry mass and soluble solids content. In conclusion, BRs can improve plant adaptation to water stress conditions by regulating important physiological and morphological mechanisms, controlling plant WUE, and leading to higher fruit production. |
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Palavras-Chave: |
Área de abertura estomática; Assimilação de carbono; Densidade estomática; Tamanho do fruto; Turgor da folha; Uso da agua. |
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Thesagro: |
Carbono; Tomate. |
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Thesaurus NAL: |
Brassinosteroids; Solanum lycopersicum; Tomatoes. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02350naa a2200301 a 4500
001 2135474
005 2024-02-06
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s40415-021-00745-5$2DOI
100 1 $aRIBOLDI, L. B.
245 $a2,4-Epibrassinolide mechanisms regulating water use efciency and fruit production in tomato plants.$h[electronic resource]
260 $c2021
520 $aTomato (Solanum lycopersicum L.) plants are able to adapt to restrictive environmental conditions mainly due to hormones such as brassinosteroids (BRs) that play important roles in determining stomata conductance and leaf transpiration. However, BRs efects on morphological traits like stomata and trichome position, size, and density, as well as on physiological traits resulting in better plant water use efciency (WUE) and productivity, remain poorly understood. The objective of this study was to better understand the 2,4-epibrassinolide (EBL) mechanisms regulating leaf transpiration and WUE that can afect fruit production in tomato plants. According to results, treating tomato plants with exogenous EBL resulted in lower leaf transpiration, mainly from 9 to 16 h during the day, as well as lower stomata conductance and aperture, higher leaf water potential, higher net CO2 assimilation rate, higher number of stomata and trichome on leaf abaxial and adaxial surfaces, and higher plant dry mass accumulation, which improved plant WUE, compared to non-treated plants. EBL treatment also increased fruit size, fruit production per plant, and fruit quality traits such as higher dry mass and soluble solids content. In conclusion, BRs can improve plant adaptation to water stress conditions by regulating important physiological and morphological mechanisms, controlling plant WUE, and leading to higher fruit production.
650 $aBrassinosteroids
650 $aSolanum lycopersicum
650 $aTomatoes
650 $aCarbono
650 $aTomate
653 $aÁrea de abertura estomática
653 $aAssimilação de carbono
653 $aDensidade estomática
653 $aTamanho do fruto
653 $aTurgor da folha
653 $aUso da agua
700 1 $aDIAS, R. Z.
700 1 $aCASTRO, P. R. de C e
700 1 $aFREITAS, S. T. de
773 $tBrazilian Journal of Botany$gv. 44, p. 617-627, 2021.
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