Location of enzymes metabolising sucrose and starch in the grassesPennisetum purpureumandMuhlenbergia montana
✍ Scribed by C. Bucke; I. R. Oliver
- Publisher
- Springer-Verlag
- Year
- 1975
- Tongue
- English
- Weight
- 842 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0032-0935
No coin nor oath required. For personal study only.
✦ Synopsis
Leaf tissue of the panicoid grass Pennisetum purpureum (Schum) and of the chloridoid grass Muhlenbergia montana (Hitchcock) were fractionated to produce preparations enriched in the contents of mesophyll and bundle sheath cells. Sucrose phosphate synthetase and sucrose synthetase were found predominantly in the mosophyll tissues of both species, as was uridinc-diphosphate-glucose pyrophosphorylase in Pennisetum. In Muhlenber!lia this enzyme was more plentiful in the bundle sheath cell fraction.
Starch synthetase and adenosine-diphosphate-glucose pyrophosphorylase were plentiful in bundle sheath extracts of both species but phosphorylase was associated with extracts of mesophyll cells. In no case was there a clear-cut compartmentation of enzymes between leaf fractions.