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BATTAGLIA Marina Esther

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Título:

COMPARATIVE ANALYSIS OF ALKALINE/NEUTRAL INVERTASES AMONG PLANTS

Autor/es:

LECHNER, LEANDRA; BATTAGLIA MARINA; MARTINEZ-NOEL, GISELLE; SALERNO, GRACIELA

Lugar:

MAR DEL PLATA

Reunión:

Congreso; Sociedad Argentina de Investigacion en Bioquimica y Biologia Molecular; 2015

Institución organizadora:

SAIB

Resumen:

Sucrose (Suc) plays a central role in plant growth anddevelopment, and in response to environmental stresses.Alkaline/Neutral-Invertases (A/N-Inv) (localized in the cytosol, mitochondriaand/or in plastids) hydrolyze Suc to hexoses for maintenance functions.Recently significant roles in root morphogenesis, germination, photosyntheticapparatus biosynthesis, abiotic and biotic stress tolerance have been revealed.A/N-Inv multigene families have been reported in A. thaliana (9 genes), O. sativa (8), P. trichocharpa (16), V. vinifera (9), L. japonicus (7) and M. esculenta (11). In the present study we identifiedthe A/N-Inv family in the wheat genome, analyzed its structure, phylogeny andexpression patterns, which were compared with other plants. Similarly to rice,we identified 4 and 3 putative genes coding for cytosolic (Ta-NIN5 to 8) andorganelle isoforms (Ta-NIN1 to 4), respectively, whose sequences werecategorized into the two major clades described. Expression analyses showedthat genes coding for cytosolic isozymes expressed in roots and leaves, andwere differentially regulated in response to cold and drought stress. Weconclude that organellar wheat A/N-Invs are conserved and common to distantlyrelated plants, and some of the cytosolic isoforms are induced in response toenvironmental stresses. Supported by CONICET, ANPCyT (PICT 1288), UNMdP andFIBA.

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