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dc.contributor.author
Muñiz García, María Noelia
dc.contributor.author
Baroli, Irene Mabel
dc.contributor.author
Cortelezzi, Juan Ignacio
dc.contributor.author
Zubillaga, Martina
dc.contributor.author
Capiati, Daniela Andrea
dc.date.available
2024-04-18T18:26:19Z
dc.date.issued
2023-10-30
dc.identifier.citation
Muñiz García, María Noelia; Baroli, Irene Mabel; Cortelezzi, Juan Ignacio; Zubillaga, Martina; Capiati, Daniela Andrea; Genetic manipulation of protein phosphatase 2A affects multiple agronomic traits and physiological parameters in potato (Solanum tuberosum); Csiro Publishing; Functional Plant Biology; 50; 12; 30-10-2023; 1117-1129
dc.identifier.issn
1445-4408
dc.identifier.uri
http://hdl.handle.net/11336/233489
dc.description.abstract
In this study, agronomic and functional characteristics of potato (Solanum tuberosum) plants constitutively overexpressing the protein phosphatase 2A (PP2A) catalytic subunit StPP2Ac2b (StPP2Ac2b-OE) were evaluated. StPP2Ac2b-OE plants display reduced vegetative growth, tuber yield and tuber weight under well-watered and drought conditions. Leaves of StPP2Ac2b-OE plants show an increased rate of water loss, associated with an impaired ability to close stomata in response to abscisic acid. StPP2Ac2b-OE lines exhibit larger stomatal size and reduced stomatal density. These altered stomatal characteristics might be responsible for the impaired stomatal closure and the elevated transpiration rates, ultimately leading to increased sensitivity to water-deficit stress and greater yield loss under drought conditions. Overexpression of StPP2Ac2b accelerates senescence in response to water-deficit stress, which could also contribute to the increased sensitivity to drought. Actively photosynthesising leaves of StPP2Ac2b-OE plants exhibit elevated levels of carbohydrates and a down-regulation of the sucrose transporter StSWEET11, suggesting a reduced sucrose export from leaves to developing tubers. This effect, combined with the hindered vegetative development, may contribute to the reduced tuber weight and yield in StPP2Ac2b-OE plants. These findings offer novel insights into the physiological functions of PP2A in potato plants and provide valuable information for enhancing potato productivity by modulating the expression of StPP2Ac2b.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ABIOTIC STRESS
dc.subject
ABSCISIC ACID
dc.subject
AGRONOMIC TRAITS
dc.subject
DROUGHT
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PHOSPHATASE
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PHOTOSYNTHESIS
dc.subject
PLANT GROWTH
dc.subject
POTATO
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PP2A
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SOLANUM TUBEROSUM
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STOMATAL CONDUCTANCE
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SUCROSE TRANSPORT
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YIELD
dc.subject.classification
Bioquímica y Biología Molecular
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Genetic manipulation of protein phosphatase 2A affects multiple agronomic traits and physiological parameters in potato (Solanum tuberosum)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-04-16T09:48:15Z
dc.identifier.eissn
1445-4416
dc.journal.volume
50
dc.journal.number
12
dc.journal.pagination
1117-1129
dc.journal.pais
Australia
dc.journal.ciudad
Clayton
dc.description.fil
Fil: Muñiz García, María Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.description.fil
Fil: Baroli, Irene Mabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Biodiversidad y Biología Experimental; Argentina
dc.description.fil
Fil: Cortelezzi, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.description.fil
Fil: Zubillaga, Martina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.description.fil
Fil: Capiati, Daniela Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; Argentina
dc.journal.title
Functional Plant Biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.publish.csiro.au/FP/FP23163
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1071/FP23163
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