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[Photochemical activity of pea mutants with damaged photosystems].
- Source :
-
Biokhimiia (Moscow, Russia) [Biokhimiia] 1982 Sep; Vol. 47 (9), pp. 1512-21. - Publication Year :
- 1982
-
Abstract
- The interrelationship between biochemical photosynthetic reactions and mutations was investigated, using five nuclear recessive lethal pea mutants with damaged photosystems II (1, 19) and I (5, 21, 22). Based on the data from photoreduction of NADP+, light-induced redox conversions of exogenous and endogenous plastocyanines in isolated chloroplasts, light-induced redox conversions of cytochrome f and absorbance changes at 520 nm in chloroplasts and leaves, the possible existence of alternative pathways of electron transfer and the pleiotropic effects of mutations, are discussed. A correlation between the structural damages of chloroplasts and the photochemical activity of mutants was found. The existence of cyclic electron transport around photosystem I involving cytochrome f and plastocyanine in mutants 1 and 19 and of an electron transfer pathway from H2O to NADP+ without plastocyanine in mutant 22 is postulated.
Details
- Language :
- Russian
- ISSN :
- 0320-9725
- Volume :
- 47
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Biokhimiia (Moscow, Russia)
- Publication Type :
- Academic Journal
- Accession number :
- 7138966