The Hexose Monophosphate Shunt as the Major Respiratory Pathway During Sporulation of Rust of Safflower.

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Abstract
Three lines of evidence indicate that the hexose monophosphate shunt replaces the normal Embden-Meyerhof system of the host during sporulation of rust (Puccinia carthami) on the hypo-cotyl of safflower. The ratio of anaerobic to aerobic CO2 production is less than 0.33 in infected tissue as contrasted to a ratio greater than 0.60 for healthy host tissue. The respiration of infected tissue is much less sensitive to NaF and the rate of production of CO2 from carbon one of glucose was much greater than from the 6th carbon. C6/C1 ratios of 0.18 were obtained from diseased tissue while healthy tissue of the same age showed a ratio of 0.63.

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