limitation of Alternative Respiratory Pathway Activity in Grapefruit Flavedo Tissue by Oxygen Availability |
| |
Authors: | Purvis A C |
| |
Institution: | University of Florida, Institute of Food and Agricultural Sciences, Citrus Research and Education Center, 700 Experiment Station Road, Lake Alfred, Florida 33850. |
| |
Abstract: | The capacity of the alternative respiratory pathway increased in the flavedo tissue of `Marsh' grapefruit (Citrus paradisi Macf.) stored at 5°C for 2 weeks or longer. Elevated O2 levels during respiratory assays enhanced respiration by the tissue at 20°C but not at 5°C. At 20°C, salicylhydroxamic acid alone was inhibitory to O2 uptake only in elevated O2. In conventional Warburg studies, alternative pathway respiration may be limited by the low solubility and/or slow rate of O2 diffusion into plant tissues, such as grapefruit flavedo, and may be responsible for the apparent low utilization of the alternative pathway potential observed in other studies. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|