Photosynthetic inhibition

Jones, T.W., W.M. Kemp, P.S. Estes, and J.C. Stevenson. 1986. Atrazine uptake, photosynthetic inhibition, and short-term recovery for the submersed vascular plant, Potamogeton perfoliatus L. Arch. Environ. Contam. Toxicol. 15 277-283. 

Jones, T.W. and L. Winchell. 1984. Uptake and photosynthetic inhibition by atrazine and its degradation products on four species of submerged vascular plants. Jour. Environ. Qual. 13 243-247. 

Photosynthetic inhibition of algae and macrophytes by anthracene, naphthalene, phenanthrene, pyrene (Neff 1985), and fluorene (Finger et al. 1985)... 

Photosynthetic inhibition caused by NOx may be due to competition for NADPH between the processes of nitrite reduction and carbon assimilation in chloroplasts. N02 has been shown to cause swelling of chloroplast membranes (Wellburn et al. 1972). Biochemical and membrane injury may be caused by ammonia produced from N03, if it is not utilized soon after its formation. Plants can metabolize the dissolved NOx through their N02 assimilation pathway ... 

E.W. Helbling, V.E. Villafane, A.G.J. Buma, M. Andrade, F. Zaratti (2001). DNA damage and photosynthetic inhibition induced by solar UVR in tropical phytoplankton (Lake Titicaca, Bolivia). Eur. J. Phycol, 36,157-166. 

The lack of involvement of photosynthetic inhibitions in lipid inhibitions by pyridazinones is also supported by results in non-photosynthetic tissue (11, 12). The phospholipids predominate in root membranes. The data in Table V show that BASF 13 338 does not influence the distribution of lipid between the various classes of phospholipids, but BASF 13 338 specifically decreases the linolenic acid content of phosphatidylcholine and phosphatidylethanolamine. 

Several inhibitors of the GS (Methionine sulphoximine, MSO Phos-phinothricin, PPT) have been used in studies of the role of this key and the mechanism of its action. Both substances can inhibit GS "in vivo", cause a dramatic increase of ammonia and inhibit the rate of photosynthetic CO2 uptake. Initially it was thought that the build-up of ammonia was the cause of photosynthetic inhibition however, Sauer et al. (1987) postulated that ami noacid metabolism, disturbed by PPT, results in a) Inhibition of synthesis of proteins.e.g. the Qb protein causing eventually the collapse of electron transport ... 

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