Soybean cotyledon starch metabolism is sensitive to altered gravity conditions

Details Soybean cotyledon starch metabolism is sensitive to altered gravity conditions Soybean cotyledon starch metabolism is sensitive to altered gravity conditions

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994adspr..14..107b&link_type=abstract

Advances in Space Research, Volume 14, Issue 8, p. 107-110.

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Scientific paper

We have demonstrated that etiolated soybean seedlings grown under the altered gravity conditions of clinorotation (1 rpm) and centrifugation (5xg) exhibit changes in starch metabolism. Cotyledon starch concentration was lower (-28%) in clinorotated plants and higher (+24%) in centrifuged plants than in vertical control plants. The activity of ADP-glucose pyrophosphorylase in the cotyledons was affected in a similar way, i.e. lower (-37%) in the clinorotated plants and higher (+22%) in the centrifuged plants. Other starch metabolic enzyme activities, starch synthase, starch phosphorylase and total hydrolase were not affected by the altered gravity treatments. We conclude that the observed changes in starch concentrations were primarily due to gravity-mediated differences in ADP-glucose pyrophosphorylase activity.

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