AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary
The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.
Authors: IMOLA MOLNÁR, RALUCA ALINA MUSTAȚĂ, ELENA RAKOSY-TICAN.
The cultivated potato ranks third in agricultural crop production on global scale. Being the target of attacks by various insects it requires increased attention and protection as well as breeding for resistance. Meanwhile the Colorado potato beetle (Leptinotarsa decemlineata, CPB) has become the biggest enemy of the cultivated potato worldwide. An alternative method of controlling the growth of CPB population would be the use of resistant potato varieties. One of the most effective sources of host-resistance mechanisms is the wild Solanum chacoense. Somatic hybridization via protoplast fusion made it possible the introgression of valuable traits from S. chacoense into cultivated potato. Adequate responses to biotic stresses are crucial for plant survival. The formation of reactive oxygen species during microbial infection is a well-known process but their role against herbivore attacks is still not outlined. The reactive oxygen species (ROS) concentration in plants is controlled by different antioxidative mechanisms in order to maintain the normal function of cells. The aim of our study was to determine the role of ROS signaling as defense response induced by mechanical wounding in potato somatic hybrids. The correlation between CPB resistance and H2O2 accumulation rate were determined, as well. Also the role of anthocyanin as a ROS scavenger was established. Based on our results we conclude that H2O2 accumulation highly influences somatic hybrid response to insect herbivore attacks therefore this type of ROS plays an important role in plant defense mechanism against CPB. Hydrogen peroxide accumulation led to anthocyanin generation therefore anthocyanin plays a role as radical scavenger in potato somatic hybrids. This study is the first to point out the role of reactive oxygen species and anthocyanin biosynthesis in response to mechanical wounding in the somatic hybrids resistant or sensitive to Colorado potato beetle.
Keywords: anthocyanin, hydrogen peroxide, somatic hybrids
