INVESTIGADORES
MARTINEZ NOËL Giselle Maria Astrid
congresos y reuniones científicas
Título:
DIFFERENTIAL EXPRESSION OF NEUTRAL/ALKALINE INVERTASE ISOFORMS IN WHEAT TISSUES
Autor/es:
LECHNER L; MARTIN MV; MARTÍNEZ NOËL G; SALERNO G
Reunión:
Congreso; V SAIB; 2014
Resumen:
Alkaline/Neutral invertases (A/N-Invs)
are sucrose hydrolyzing enzymes with optimum pH ranged from 6.8 to 8.0. They
have been identified in plants and cyanobacteria. In plants, from being minor
proteins, scarcely mentioned in comprehensive descriptions of carbon flux, they
recently became leading actors in sucrose metabolism. A/N-Invs have significant
roles in root morphogenesis, photosynthetic apparatus biosynthesis, and abiotic
stress adaptation. In the present work we analyze by Western blot and RT-PCR the
occurrence of different isoforms in leaf and root extracts from wheat seedlings
after a cold treatment. The results showed that in leaves, at least, a novel A/N-Inv
isoform is induced in response to low temperature. Also, the expression of wheat
A/N-Inv putative genes is differentially regulated in roots and leaves in
response to adverse environmental conditions. Our data support the role of A/N-Invs
in relation to abiotic stresses and that they may be involved in responses to
cope with them. Supported by PIP 134, UNMdP (EXA645), PICT 1288, and FIBA.