Abstract
Six putative photosystem I mutants in five different nuclear genes of barley have been characterized with respect to their photosynthetic electron transport capabilities, P700, cytochromes, chlorophyll-proteins and other thylakoid polypeptides. Three of these mutants (viridis-n 34, -zb 63, and -h 15) have normal photosystem II activities but are wholly or partly deficient in photosystem I electron transport, P700, chlorophyll, a-protein 1 and its apoprotein. These three mutants also lack low molecular weight polypeptides which are believed to be integral photosystem I iron-sulfur centres. Of the remaining mutants, xantha-q 75 and -q 76, which are allelic, are mainly depleted in photosystem II and the other (viridis-q 42) had aout 75% of the wild-type activity in both photosystems. The data are discussed in relation to the fluorescence induction kinetics and low temperature fluorescence emission spectra of the mutants.
| Original language | English |
|---|---|
| Pages (from-to) | 315-328 |
| Number of pages | 14 |
| Journal | Carlsberg Research Communications |
| Volume | 45 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Jul 1980 |
| Externally published | Yes |
Keywords
- cytochromes
- difference spectra
- Fluorescence induction kinetics
- P700
- SDS-polyacrylamide gel electrophoresis
- viridis-h
- viridis-n
- viridis-q
- viridis-zb
- xantha-q
- xantha-q