Carrika
As Karrikine chemical are stimulants called that influence plant growth in combination with light stimuli, and as Keimungsinduktoren act. They were discovered in the smoke from burning parts of plants. KAR 1 is created e.g. B. when burning D-xylose and other components. Among other things, carrots promote the germination of seeds by intervening in the metabolism of the seeds in such a way that even a lower light intensity is sufficient as a stimulus to break the dormancy than would be the case in the absence of the carrots.
The name Karrikine is derived from the Australian Noongar word "karrik" for smoke. The systematic name for the Karrikin KAR 1 is: 3-methyl-2 H -furo [ 2,3-c ] pyran-2-one.
The advantage of this evolutionary adaptation for the plants is that they - as pioneer plants - can very quickly repopulate the habitat that has been destroyed by fire after a field fire .
literature
- David C. Nelson et al .: Karrikins discovered in smoke trigger Arabidopsis seed germination by a mechanism requiring Gibberellic acid synthesis and light. In: Plant Physiology. Volume 149, 2009, pp. 863-873, doi: 10.1104 / pp.108.131516
- David C. Nelson et al .: Karrikins enhance light responses during germination and seedling development in Arabidopsis thaliana. In: PNAS . Volume 107, No. 15, 2010, pp. 7095-7100, doi: 10.1073 / pnas.0911635107
Web links
- What are karrikins? David C. Nelson laboratory website
Individual evidence
- ↑ Gavin R. Flematti, Kingsley W Dixon, Steven M. Smith: What are karrikins and how were they 'discovered' by plants? In: BMC Biology . tape 13 , no. December 1 , 2015, ISSN 1741-7007 , doi : 10.1186 / s12915-015-0219-0 .
- ↑ Sheila DS Chiwocha et al .: Karrikins: A new family of plant growth regulators in smoke. In: Plant Science. Volume 177, No. 4, 2009, pp. 252-256, doi: 10.1016 / j.plantsci.2009.06.007
- ↑ How plants smell smoke. On: inspiringscience.net from August 2013