In plants, sugar feedback regulation provides a mechanism for control of carbohydrate allocation and utilization among tissues and organs. The sugar repression of alpha-amylase gene expression in rice provides an ideal model for studying the mechanism of sugar feedback regulation. We have shown previously that sugar repression of alpha-amylase gene expression in rice suspension cells involves c...

With the use of high performance ion chromatography, investigations conducted in a number of sugar factories confirmed that glucose/brix or glucose/chloride could be used as a marker to localise and estimate sucrose inversion in evaporators, and establish its contribution to the undetermined loss. In most cases sucrose degradation took place in the later effects, where evaporator tubes were fou...

Although females of most mosquito species are known to use sugar as a necessary source of energy, female Anopheles gambiae Giles sensu stricto are thought to use it facultatively or not at all. However, field evidence of sugar-free living is inconclusive, and the implications for reproductive fitness and vectorial capacity are unknown. To evaluate the role that sugar may play in the ecology of ...

Twenty-two patients with primary myeurinary hemosiderin. The defects of lofibrosis and myeloid metaplasia the red cell membrane, as evidenced (MMM) and ten patients with MMM by acid and sucrose lysis tests, were secondary to carcinoma were studied limited to those with primary MMM and for the relationship of MMM to “PNHoccurred in 54#{176}/o of the cases. Another like defect.” Laboratory measur...

In leaves, sucrose uptake kinetics involve high- and low-affinity components. A family of low- and high-affinity sucrose transporters (SUT) was identified. SUT1 serves as a high-affinity transporter essential for phloem loading and long-distance transport in solanaceous species. SUT4 is a low-affinity transporter with an expression pattern overlapping that of SUT1. Both SUT1 and SUT4 localize t...

Sucrose cleavage is vital to multicellular plants, not only for the allocation of crucial carbon resources but also for the initiation of hexose-based sugar signals in importing structures. Only the invertase and reversible sucrose synthase reactions catalyze known paths of sucrose breakdown in vivo. The regulation of these reactions and its consequences has therefore become a central issue in ...

the use of chlorophyll fluorescence (chlf) technique was evaluated on nondestructive measurement of sugar content during fruit development. multivariate models, principal component analysis (pca), and partial least-squares regression (plsr), were developed for the classification and prediction of fructose, glucose, and sucrose in fig fruits. the results of this study showed a significant correl...