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p-Hydroxybenzoic Acid, a Growth Regulator, Isolated from Woody Cuttings of Ribes rubrum.
- Source :
- Physiologia Plantarum; 1966, Vol. 19 Issue 2, p294-307, 14p
- Publication Year :
- 1966
-
Abstract
- Woody cuttings of Ribes rubrum, an easy plant to root, were extracted with methanol. One fraction of this extract was both water and ether soluble; a part of it was only water soluble. From the water and ether soluble fraction a crystalline compound was isolated which was fully identified with p-hydroxybenzoic acid (PHB) by m.p., mixed m.p., infrared spectrum, ultraviolet absorption in neutral and alkaline methanol and chemical analyses. For Avena coleoptiles straight growth test, p-hydroxybenzoic acid was found to have a significant growth promoting activity in the range 20-100 μg/ml, and it showed strong growth inhibition at concentrations higher than 200 μg/ml. From the same extract fraction a phenolic ester was isolated by paper chromatography which showed a weak growth inhibiting activity. This compound was identified as an ester of p-hydroxybenzoic acid by micro-scale reactions. From the extract soluble only in water further amounts of crystalline p-hydroxybenzoic acid were obtained by alkaline hydrolysis. This PHB may have arisen from the breakdown of pelargonidin glucosides. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00319317
- Volume :
- 19
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Physiologia Plantarum
- Publication Type :
- Academic Journal
- Accession number :
- 17410083
- Full Text :
- https://doi.org/10.1111/j.1399-3054.1966.tb07019.x