Steady state growth of avena coleoptile sections in high auxin concentrations.
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منابع مشابه
Osmoregulation in the Avena Coleoptile : CONTROL OF SOLUTE UPTAKE IN PEELED SECTIONS.
Peeled Avena sativa coleoptile sections (i.e. sections from which the epidermis has been removed) have been used to study the control of solute uptake under conditions where the uptake is not limited by the cuticular barrier. In the presence of 2% sucrose, auxin enhances the rate at which the total osmotic solutes increase, but this appears to be a response to the increased growth rate, inasmuc...
متن کاملAuxin-induced growth of Avena coleoptiles involves two mechanisms with different pH optima.
Although rapid auxin-induced growth of coleoptile sections can persist for at least 18 hours, acid-induced growth lasts for a much shorter period of time. Three theories have been proposed to explain this difference in persistence. To distinguish between these theories, the pH dependence for auxin-induced growth of oat (Avena sativa L.) coleoptiles has been determined early and late in the el...
متن کاملEffect of Galactose on Growth and Metabolism of Avena Coleoptile Sections.
1. BONNER, J. and FOSTER, R. J. The growth-time relationships of the auxin-induced growth in Avena coleoptile sections. Jour. Exptl. Bot. 6: 293-302. 1955. 2. COOIL, B. and BONNER, J. Effects of calcium and potassium ions on the auxin-induced growth of Avena coleoptile sections. Planta (In press). 3. HEYN, A. N. J. Der Mechanisms der Zellstreckung. Rec. trav. bot. neerl. 28: 113-244. 1931. 4. H...
متن کاملA Deseeded Avena Test Method for Small Amounts of Auxin and Auxin Precursors
THE MAIN RESULTS PRESENTED IN THIS ARTICLE MAY BE SUMMARIZED AS FOLLOWS: 1. A test method with deseeded Avena seedlings for small concentrations of auxin and precursors of auxin has been described. 2. This method makes possible quantitative determinations of about ten times as low concentrations of hormone as can be obtained with the standard method, (a) Through an increase in the time of the t...
متن کاملOsmoregulation in the Avena coleoptile in relation to auxin and growth.
A study has been made of the effects of auxin and growth on the ability of Avena coleoptile sections to osmoregulate, i.e. to take up solutes so as to maintain their osmotic concentration, turgor pressure, and growth rate. The high auxin-induced growth rate of Avena coleoptiles is maintained when cells are provided sucrose, glucose, NaCl, or KCl as a source of absorbable solutes, but not when 2...
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ورودعنوان ژورنال:
- Plant physiology
دوره 36 3 شماره
صفحات -
تاریخ انتشار 1961