Photosynthesis pteridines

A pteridine is considered to be the primary receptor of the electrons liberated by light in photosynthesis (Fuller et al., 1971) and a pteridine in the mammalian eye is presumed to be the agent which protects against the blinding effect of light (Cremer-Bartels, 1975). Cancerous cells break down biopterin to neopterin, the concentration of which in the urine may have diagnostic significance (Rokos et al, 1980). 

A number of studies have demonstrated that A. nidulans is susceptible to low temperature. When the algal cells are exposed to temperatures near 0°C, viability declines (Rao et al., 1977), and activities of overall photosynthesis, photosynthetic electron transport and phosphorylation all diminish (Forrest et al., 1957 Jansz and MacLean, 1973 Rao et al., 1977 Ono and Murata, 1981a Vigh and Joo, 1983 Vigh et al., 1985). Also, potassium ions, glutamate and pteridines are released from the cells (Forrest et al., 1957 Jansz and MacLean 1973 Ono and Murata, 1981b ... 

A pteridine is considered to be the primary receptor of the electrons liberated by light in photosynthesis (Fuller et al. 1971) and a pteridine in... 

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