Short communication Anhydrase carbonic activity in arbuscular mycorrhiza
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Abstract
anhydrase (AC) in plants has been mainly associated
to increase the CO2 concentration inside chloroplast to
enhance the carboxylation rate of Rubisco enzyme, being
this reaction that integrates the CO2 in carbohydrates during
photosynthesis. However, the AC activity has been found
in non-green tissues also, like roots, nodules, etiolated
leaves, seeds, as well as in bacteria and fungi, which
plays diverse and specific rolls. In the present study, the
isoenzyme patterns of AC were analyzed in tomato (Solanum
lycopersicum L.) roots inoculated in individual way with
six different arbuscular mycorrhizal fungi (AMF) strains,
taking the samples at two moments of symbiosis, and
afterward they were compared among them. Results revealed
that the AM fungus presence provoked the appearance of
isoenzymes with AC activity in tomato roots cv. ‘AMALIA’,
and the obtained isoenzymatic patterns showed a differential
response dependent on inoculated strain, principally at early
stages of symbiosis. The possible fungal origin of observed
isoenzymes is discussed. The present work constitutes the
first report about AC isoenzymes in AMF- colonized roots.
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