Glycine-betaine accumulation influences susceptibility of water-stressed barley to the aphid Schizaphis graminum
Author
dc.contributor.author
Zúñiga Navarro, Gustavo
Author
dc.contributor.author
Corcuera Pérez, Luis
Admission date
dc.date.accessioned
2018-12-20T14:11:45Z
Available date
dc.date.available
2018-12-20T14:11:45Z
Publication date
dc.date.issued
1987
Cita de ítem
dc.identifier.citation
Phyrockmisfry. Vol. 26. No. 2. pp. 367-369. 1987
Identifier
dc.identifier.issn
00319422
Identifier
dc.identifier.other
10.1016/S0031-9422(00)81416-8
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/154628
Abstract
dc.description.abstract
Water deficit increased susceptibility of barley to the aphid Schizaphis graminum. Proline and glycine-betaine accumulated in the stressed plants. These compounds were incorporated into artificial diets to test their effects on aphids. Survival of S. graminum was not affected by proline and glycine-betaine. In addition, glycine-betaine increased reproduction of the greenbug at concentrations similar to those found in stressed barley plants. When glycine-betaine was added to detached shoots of barley, population growth rate of S. graminum increased in that plant material kept in the betaine solutions. It is suggested that glycine-betaine accumulation may be responsible for the increased susceptibility of water-stressed barley to the greenbug