Document Detail

Characterization of potato (Solanum tuberosum) and tomato (Solanum lycopersicum) protein phosphatases type 2A catalytic subunits and their involvement in stress responses.
MedLine Citation:
PMID:  19330349     Owner:  NLM     Status:  MEDLINE    
Protein phosphorylation/dephosphorylation plays critical roles in stress responses in plants. This report presents a comparative characterization of the serine/threonine PP2A catalytic subunit family in Solanum tuberosum (potato) and S. lycopersicum (tomato), two important food crops of the Solanaceae family, based on the sequence analysis and expression profiles in response to environmental stress. Sequence homology analysis revealed six isoforms in potato and five in tomato clustered into two subfamilies (I and II). The data presented in this work show that the expression of different PP2Ac genes is regulated in response to environmental stresses in potato and tomato plants and suggest that, in general, mainly members of the subfamily I are involved in stress responses in both species. However, the differences found in the expression profiles between potato and tomato suggest divergent roles of PP2A in the plant defense mechanisms against stress in these closely related species.
Silvia Marina País; Marina Alejandra González; María Teresa Téllez-Iñón; Daniela Andrea Capiati
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Publication Detail:
Type:  Journal Article     Date:  2009-03-28
Journal Detail:
Title:  Planta     Volume:  230     ISSN:  1432-2048     ISO Abbreviation:  Planta     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-28     Completed Date:  2009-11-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1250576     Medline TA:  Planta     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  13-25     Citation Subset:  IM    
Consejo Nacional de Investigaciones Científicas y Técnicas, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Vuelta de Obligado 2490, Ciudad de Buenos Aires 1428, Argentina.
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MeSH Terms
Base Sequence
Blotting, Northern
Blotting, Western
Catalytic Domain / genetics
Cold Temperature
Gene Expression Regulation, Enzymologic / drug effects
Gene Expression Regulation, Plant / drug effects
Lycopersicon esculentum / enzymology*,  genetics
Molecular Sequence Data
Plant Proteins / genetics*,  metabolism
Protein Phosphatase 2 / classification,  genetics*,  metabolism
Reverse Transcriptase Polymerase Chain Reaction
Sodium Chloride / pharmacology
Solanum tuberosum / enzymology*,  genetics
Stress, Mechanical
Time Factors
Reg. No./Substance:
0/Plant Proteins; 7647-14-5/Sodium Chloride; EC Phosphatase 2

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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