Abstract
The inhibition of photosynthetic activity by bisulphite was studied in intact leaves of abscisic acid (ABA)-treated and non-treated (control) barley plants. ABA inhibited the photosynthetic process as evidenced by lower values of chlorophyll fluorescence kinetic parameters F(v)/F(m) (photosystem 2 activity) and R(fd) (vitality index, related to the whole photosynthetic activity) compared with ABA-non-treated plants. After bisulphite treatment, the extent of inhibition was smaller in ABA-treated plants than in the control ones indicating a protective effect of ABA. The protective action sites of ABA were the Q(A) reduction and the Calvin cycle.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 51-60 |
| Number of pages | 10 |
| Journal | Photosynthetica |
| Volume | 36 |
| Issue number | 1-2 |
| State | Published - Jan 1 1999 |
| Externally published | Yes |
Keywords
- Chlorophyll fluorescence
- Hordeum vulgare
- Photoacoustic spectroscopy
- Photosystem 2
ASJC Scopus subject areas
- Plant Science