✦ LIBER ✦
Effects of water stress on photosynthetic electron transport, photophosphorylation, and metabolite levels ofXanthium strumariummesophyll cells
✍ Scribed by Thomas D. Sharkey; Murray R. Badger
- Publisher
- Springer-Verlag
- Year
- 1982
- Tongue
- English
- Weight
- 817 KB
- Volume
- 156
- Category
- Article
- ISSN
- 0032-0935
No coin nor oath required. For personal study only.
✦ Synopsis
Several component processes of photosynthesis were measured in osmotically stressed mesophyll cells of Xanthium strumarium L. The ribulose-l,5-bisphosphate regeneration capacity was reduced by water stress. Photophosphorylation was sensitive to water stress but photosynthetic electron transport was unaffected by water potentials down to -4 0 bar ( -4 MPa). The concentrations of several intermediates of the photosynthetic carbon-reduction cycle remained relatively constant and did not indicate that ATP supply was limiting photosynthesis in the water-stressed cells.