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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
25/09/2020 |
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Actualizado : |
12/08/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
VANDEGEER, R.K.; ZHAO, C.; CIBILS-STEWART, X.; WUHRER, R.; HALL, C.R.; HARTLEY, S.E.; TISSUE, D.T.; JOHNSON, S.N. |
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Afiliación : |
REBECCA K. VANDEGEERA, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; CHENCHEN ZHAO, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; XIMENA CIBILS-STEWART, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RICHARD WUHRER, Advanced Materials Characterisation Facility (AMCF), Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; CASEY R. HALL, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; SUSAN E. HARTLEY, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK.; DAVID T. TISSUE, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia.; SCOTT N. JOHNSON, Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW 2751, Australia. |
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Título : |
Silicon deposition on guard cells increases stomatal sensitivity as mediated by K+ efflux and consequently reduces stomatal conductance. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Physiologia Plantarum, Volume 171, Issue 3, Pages 358-370, March 2021. Doi: https://doi.org/10.1111/ppl.13202 |
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DOI : |
doi.org/10.1111/ppl.13202 |
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Idioma : |
Inglés |
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Notas : |
Article history: First published: 03 September 2020/Version of Record online:16 September 2020/Accepted manuscript online:
03 September 2020/Manuscript accepted:01 September 2020/Manuscript revised:27 August 2020/Manuscript received:30 June 2020/First published: 03 September 2020. Corresponding author: e-mail: R.Vandegeer@westernsydney.edu.au |
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Contenido : |
Abstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency.
Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promotes greater stomatal sensitivity as mediated by guard cell K+ efflux. MenosAbstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency.
Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promote... Presentar Todo |
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Palabras claves : |
LEAF WATER POTENTIAL; PHOTOSYNTHESIS; RELATIVE WATER CONTENT; SCANNNG ELECTON MICROSCOPY. |
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Thesagro : |
FESTUCA ARUNDINACEA. |
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Asunto categoría : |
H01 Protección de plantas - Aspectos generales |
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Marc : |
LEADER 02859naa a2200289 a 4500
001 1061345
005 2021-08-12
008 2021 bl uuuu u00u1 u #d
024 7 $adoi.org/10.1111/ppl.13202$2DOI
100 1 $aVANDEGEER, R.K.
245 $aSilicon deposition on guard cells increases stomatal sensitivity as mediated by K+ efflux and consequently reduces stomatal conductance.$h[electronic resource]
260 $c2021
500 $aArticle history: First published: 03 September 2020/Version of Record online:16 September 2020/Accepted manuscript online: 03 September 2020/Manuscript accepted:01 September 2020/Manuscript revised:27 August 2020/Manuscript received:30 June 2020/First published: 03 September 2020. Corresponding author: e-mail: R.Vandegeer@westernsydney.edu.au
520 $aAbstract: Silicon (Si) has been widely reported to improve plant resistance to water stress via various mechanisms including cuticular Si deposition to reduce leaf transpiration. However, there is limited understanding of the effects of Si on stomatal physiology, including the underlying mechanisms and implications for resistance to water stress. We grew tall fescue (Festuca arundinacea Schreb. cv. Fortuna) hydroponically, with or without Si, and treated half of the plants with 20% polyethylene glycol (PEG) to impose physiological drought (osmotic stress). Scanning electron microscopy (SEM) in conjunction with X-ray mapping (XRM) found that Si was deposited on stomatal guard cells and as a sub-cuticular layer in Si-treated plants. Plants grown in Si had a 28% reduction in stomatal conductance and a 23% reduction in cuticular conductance. When abscisic acid was applied exogenously to epidermal leaf peels to promote stomatal closure, Si plants had 19% lower stomatal aperture compared to control plants (i.e.increased stomatal sensitivity) and an increased efflux of guard cell K+ ions. However, the changes in stomatal physiology with Si were not substantial enough to improve water stress resistance, as shown by a lack of significant effect of Si on water potential, growth, photosynthesis and water-use efficiency. Our findings suggest a novel underlying mechanism for reduced stomatal conductance with Si application; specifically, that Si deposition on stomatal guard cells promotes greater stomatal sensitivity as mediated by guard cell K+ efflux.
650 $aFESTUCA ARUNDINACEA
653 $aLEAF WATER POTENTIAL
653 $aPHOTOSYNTHESIS
653 $aRELATIVE WATER CONTENT
653 $aSCANNNG ELECTON MICROSCOPY
700 1 $aZHAO, C.
700 1 $aCIBILS-STEWART, X.
700 1 $aWUHRER, R.
700 1 $aHALL, C.R.
700 1 $aHARTLEY, S.E.
700 1 $aTISSUE, D.T.
700 1 $aJOHNSON, S.N.
773 $tPhysiologia Plantarum, Volume 171, Issue 3, Pages 358-370, March 2021. Doi: https://doi.org/10.1111/ppl.13202
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Registro original : |
INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
16/04/2024 |
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Actualizado : |
16/04/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
SOUSA, A.L.V.; SOUSA, D.E.R.; CERQUEIRA, L.A.; QUEIROZ-MACHADO, C.R.R.; GIARETTA, P.R.; RIET-CORREA, F.; CASTRO, M.B.; MACHADO, M. |
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Afiliación : |
ANA LÍVIA V. SOUSA, Laboratório de Patologia Veterinária (LPV), Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Via L4 Norte, Asa Norte, Brasília, DF, 70636-200, Brazil; DAVI E.R. SOUSA, Laboratório de Patologia Veterinária (LPV), Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Brasília, Brazil; Graduate Program in Animal Science, Faculdade Agronomia e Medicina Veterinária (FAV), Universidade de Brazil; LIZ A. CERQUEIRA, Laboratório de Patologia Veterinária (LPV), Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Brasília, Brazil; Graduate Program in Animal Science, Faculdade Agronomia e Medicina Veterinária (FAV), Universidade de Brazil; CINTIA R.R. QUEIROZ-MACHADO, CENUR Noreste, Universidad de la República (UdelaR), Ruta 5 Km 386, Tacuarembó, 45000, Uruguay; PAULA R. GIARETTA, Gastrointestinal Laboratory, Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States; FRANKLIN RIET-CORREA AMARAL, Graduate Program in Animal Science in the Tropics (PPGCAT), Faculdade de Medicina Veterinária e Zootecnia, Universidade Federal da Bahia (UFBA), Av. Adhemar de Barros 500, Ondina, BA, Salvador, 40170-110, Brazil; MÁRCIO B. CASTRO, Laboratório de Patologia Veterinária (LPV), Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Brasília, Brazil; Graduate Program in Animal Science, Faculdade Agronomia e Medicina Veterinária (FAV), Universidade de Brazil; MIZAEL MACHADO DA COSTA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Graduate Program in Animal Science, Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Campus Darcy Ribeiro, Brasília, DF, Brazil. |
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Título : |
Cestrum axillare hepatotoxicity in cattle in the Distrito Federal, Goiás and Minas Gerais. [Hepatotoxicidade do Cestrum axillare em bovinos do Distrito Federal, Goiás e Minas Gerais].. |
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Complemento del título : |
Original Article. Livestock Diseases. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Pesquisa Veterinaria Brasileira. 2024, Volume 44, e07399. https://doi.org/10.1590/1678-5150-PVB-7399 -- OPEN ACCESS. |
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ISSN : |
0100-736X |
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DOI : |
10.1590/1678-5150-PVB-7399 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 08 Nov 2023, Accepted 09 Dec 2023, Publication in this collection 18 Mar 2024, Date of issue 2024. -- Correspondence: Machado, M.; Graduate Program in Animal Science, Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Campus Darcy Ribeiro, ICC Norte, Asa Norte, Brasília, DF, Brazil; email:mmachado@inia.org.uy -- Document type: Article Gold Open Access. -- LICENSE: This is an open-access article distributed under the terms of the Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/ |
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Contenido : |
ABSTRACT.- This study reports four outbreaks of Cestrum axillare poisoning in cattle. Outbreaks occurred in farms of the Distrito Federal, Goiás, and Minas Gerais states during the dry season, affecting cows and heifers, with a mortality rate of 1 to 14,28%. Poisoned animals showed neurological signs and recumbency, followed by death within 12 hours, and some animals were found dead. Gross and histological lesions were typical of acute hepatotoxicity with hepatomegaly, enhancement of lobular pattern, and centrilobular to massive necrosis. This study seems to be the first report on C. axillare poisoning in cattle in the Distrito Federal, Goiás, and Triângulo Mineiro. C. axillare poisoning must be included in the differential diagnosis for cattle with hepatic necrosis in these locations. .-.-.-.-.-.-.-.-.-. RESUMO.- Este estudo relata quatro surtos de intoxicação por Cestrum axillare em bovinos. Os surtos ocorreram em fazendas do Distrito Federal, Goiás e Minas Gerais durante a estação seca, afetando vacas e novilhas, com taxa de mortalidade de 1 a 14,28%. Os animais afetados apresentaram sinais neurológicos e decúbito, seguidos de óbito em 12 horas. Alguns animais foram encontrados mortos. Foram observadas lesões macroscópicas e histológicas típicas de hepatotoxicidade aguda como hepatomegalia, evidenciação do padrão lobular e necrose centrolobular a massiva. Este é o primeiro relato de intoxicação por C. axillare em bovinos no Distrito Federal, Goiás e Triângulo Mineiro. A intoxicação por Cestrum axillare deve ser incluída no diagnóstico diferencial de bovinos com necrose hepática nessas localidades. © 2024 Colegio Brasileiro de Patologia Animal. All rights reserved. MenosABSTRACT.- This study reports four outbreaks of Cestrum axillare poisoning in cattle. Outbreaks occurred in farms of the Distrito Federal, Goiás, and Minas Gerais states during the dry season, affecting cows and heifers, with a mortality rate of 1 to 14,28%. Poisoned animals showed neurological signs and recumbency, followed by death within 12 hours, and some animals were found dead. Gross and histological lesions were typical of acute hepatotoxicity with hepatomegaly, enhancement of lobular pattern, and centrilobular to massive necrosis. This study seems to be the first report on C. axillare poisoning in cattle in the Distrito Federal, Goiás, and Triângulo Mineiro. C. axillare poisoning must be included in the differential diagnosis for cattle with hepatic necrosis in these locations. .-.-.-.-.-.-.-.-.-. RESUMO.- Este estudo relata quatro surtos de intoxicação por Cestrum axillare em bovinos. Os surtos ocorreram em fazendas do Distrito Federal, Goiás e Minas Gerais durante a estação seca, afetando vacas e novilhas, com taxa de mortalidade de 1 a 14,28%. Os animais afetados apresentaram sinais neurológicos e decúbito, seguidos de óbito em 12 horas. Alguns animais foram encontrados mortos. Foram observadas lesões macroscópicas e histológicas típicas de hepatotoxicidade aguda como hepatomegalia, evidenciação do padrão lobular e necrose centrolobular a massiva. Este é o primeiro relato de intoxicação por C. axillare em bovinos no Distrito Federal, Goiás e Triângulo Mineiro. A i... Presentar Todo |
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Palabras claves : |
Bovinos; Cattle; Cestrum axillare; Hepatotoxicidade aguda; Hepatotoxicosis; Plantas tóxicas; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA; Poisonous plants. |
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Asunto categoría : |
L73 Enfermedades de los animales |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/17605/1/10.15901678-5150-PVB-7399.pdf
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Marc : |
LEADER 03452naa a2200337 a 4500
001 1064592
005 2024-04-16
008 2024 bl uuuu u00u1 u #d
022 $a0100-736X
024 7 $a10.1590/1678-5150-PVB-7399$2DOI
100 1 $aSOUSA, A.L.V.
245 $aCestrum axillare hepatotoxicity in cattle in the Distrito Federal, Goiás and Minas Gerais. [Hepatotoxicidade do Cestrum axillare em bovinos do Distrito Federal, Goiás e Minas Gerais]..$h[electronic resource]
260 $c2024
500 $aArticle history: Received 08 Nov 2023, Accepted 09 Dec 2023, Publication in this collection 18 Mar 2024, Date of issue 2024. -- Correspondence: Machado, M.; Graduate Program in Animal Science, Faculdade de Agronomia e Medicina Veterinária (FAV), Universidade de Brasília (UnB), Campus Darcy Ribeiro, ICC Norte, Asa Norte, Brasília, DF, Brazil; email:mmachado@inia.org.uy -- Document type: Article Gold Open Access. -- LICENSE: This is an open-access article distributed under the terms of the Creative Commons Attribution License https://creativecommons.org/licenses/by/4.0/
520 $aABSTRACT.- This study reports four outbreaks of Cestrum axillare poisoning in cattle. Outbreaks occurred in farms of the Distrito Federal, Goiás, and Minas Gerais states during the dry season, affecting cows and heifers, with a mortality rate of 1 to 14,28%. Poisoned animals showed neurological signs and recumbency, followed by death within 12 hours, and some animals were found dead. Gross and histological lesions were typical of acute hepatotoxicity with hepatomegaly, enhancement of lobular pattern, and centrilobular to massive necrosis. This study seems to be the first report on C. axillare poisoning in cattle in the Distrito Federal, Goiás, and Triângulo Mineiro. C. axillare poisoning must be included in the differential diagnosis for cattle with hepatic necrosis in these locations. .-.-.-.-.-.-.-.-.-. RESUMO.- Este estudo relata quatro surtos de intoxicação por Cestrum axillare em bovinos. Os surtos ocorreram em fazendas do Distrito Federal, Goiás e Minas Gerais durante a estação seca, afetando vacas e novilhas, com taxa de mortalidade de 1 a 14,28%. Os animais afetados apresentaram sinais neurológicos e decúbito, seguidos de óbito em 12 horas. Alguns animais foram encontrados mortos. Foram observadas lesões macroscópicas e histológicas típicas de hepatotoxicidade aguda como hepatomegalia, evidenciação do padrão lobular e necrose centrolobular a massiva. Este é o primeiro relato de intoxicação por C. axillare em bovinos no Distrito Federal, Goiás e Triângulo Mineiro. A intoxicação por Cestrum axillare deve ser incluída no diagnóstico diferencial de bovinos com necrose hepática nessas localidades. © 2024 Colegio Brasileiro de Patologia Animal. All rights reserved.
653 $aBovinos
653 $aCattle
653 $aCestrum axillare
653 $aHepatotoxicidade aguda
653 $aHepatotoxicosis
653 $aPlantas tóxicas
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA
653 $aPoisonous plants
700 1 $aSOUSA, D.E.R.
700 1 $aCERQUEIRA, L.A.
700 1 $aQUEIROZ-MACHADO, C.R.R.
700 1 $aGIARETTA, P.R.
700 1 $aRIET-CORREA, F.
700 1 $aCASTRO, M.B.
700 1 $aMACHADO, M.
773 $tPesquisa Veterinaria Brasileira. 2024, Volume 44, e07399. https://doi.org/10.1590/1678-5150-PVB-7399 -- OPEN ACCESS.
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