EFFECT OF PHYTOHORMONES ON UREASE ACTIVITY OF MARROW COTYLEDONS | ||||
Journal of Plant Production | ||||
Article 34, Volume 34, Issue 5, May 2009, Page 5189-5194 PDF (513.32 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jpp.2009.118394 | ||||
View on SCiNiTO | ||||
Authors | ||||
H. M. El-Shora; Lamiaa F. M. El Said | ||||
Botany Department, faculty of Science, Mansoura University, Mansoura, Egypt | ||||
Abstract | ||||
Urease (EC 3.5.1.5, urea amidohydrolase) was isolated from marrow cotyledons of 5-day old seedlings. The effect of exogenous phytohormones namely indolebutyric acid, naphthaleneacetic acid, indoleacetic acid, indolepropionic acid, indoleacetic acid and zeatin at various concentrations (100-600 µmol) on urease activity in the cotyledons of marrow was investigated. The optimum concentrations of the five compounds that gave the highest activities of urease were 500 mol for indolebutyric acid indoleacetic acid, and 400 mol for naphthaleneacetic acid and indolepropionic acid However, the optimum concentration for zeatin was 100 µmol . | ||||
Statistics Article View: 71 PDF Download: 417 |
||||