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Can I read Phytochrome-controlled extension growth of Avena sativa L. seedlings: I. Kinetic characterization of mesocotyl, coleoptile, and leaf responses on EtoBox?
Phytochrome-controlled extension growth of Avena sativa L. seedlings: I. Kinetic characterization of mesocotyl, coleoptile, and leaf responses by P. Schopfer; K.-H. Fidelak; E. Schfer is a Agricultural and Biological Sciences article available to read on EtoBox.
What is Phytochrome-controlled extension growth of Avena sativa L. seedlings: I. Kinetic characterization of mesocotyl, coleoptile, and leaf responses about?
The effects of continuous red and far-red light and of brief light pulses on the growth kinetics of the mesocotyl, coleoptile, and primary leaf of intact oat (Avena sativa L.) seedlings were investigated. Mesocotyl lengthening is strongly inhibited, even by very small amounts of Pfr, the far-red light absorbing form of phytochrome (e.g., by [Pfr]≈0.1% of total phytochrome, established by a 756-nm light pulse). Coleoptile growth is at first promoted by Pfr, but apparently inhibited later. This inhibition is correlated in time with the rupturing of the coleoptile tip by the primary leaf, the growth of which is also promoted by phytochrome. The growth responses of all three seedling organs are fully reversible by far-red light. The apparent lack of photoreversibility observed by some previous investigators of the mesocotyl inhibition can be explained by an extremely high sensitivity to Pfr. Experiments with different seedling parts failed to demonstrate any further obvious interorgan relationship in the light-mediated growth responses of the mesocotyl and coleoptile. The organspecific growth kinetics, don't appear to be influenced by Pfr destruction. Following an irradiation, the grow
Who reads Phytochrome-controlled extension growth of Avena sativa L. seedlings: I. Kinetic characterization of mesocotyl, coleoptile, and leaf responses?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- P. Schopfer; K.-H. Fidelak; E. Schfer
- Publisher
- Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0032-0935)
- Published
- 1982
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)