Počet záznamů: 1
Cytokinin levels and signaling respond to wounding and the perception of herbivore elicitors in Nicotiana attenuata
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SYSNO ASEP 0446188 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Cytokinin levels and signaling respond to wounding and the perception of herbivore elicitors in Nicotiana attenuata Tvůrce(i) Schäfer, M. (DE)
Meza-Canales, I.D. (DE)
Navarro-Quezada, A. (DE)
Brütting, C. (DE)
Vaňková, Radomíra (UEB-Q) RID, ORCID
Baldwin, I.T. (DE)
Meldau, S. (DE)Zdroj.dok. Journal of Integrative Plant Biology - ISSN 1672-9072
Roč. 57, č. 2 (2015), s. 198-212Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Arabidopsis thaliana ; cytokinin ; herbivore-associated molecular patterns Vědní obor RIV ED - Fyziologie CEP GA206/09/2062 GA ČR - Grantová agentura ČR Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000349309200006 DOI 10.1111/jipb.12227 Anotace Nearly half a century ago insect herbivores were found to induce the formation of green islands by manipulating cytokinin (CK) levels. However, the response of the CK pathway to attack by chewing insect herbivores remains unclear. Here, we characterize the CK pathway of Nicotiana attenuata (Torr. ex S. Wats.) and its response to wounding and perception of herbivore-associated molecular patterns (HAMPs). We identified 44 genes involved in CK biosynthesis, inactivation, degradation, and signaling. Leaf wounding rapidly induced transcriptional changes in multiple genes throughout the pathway, as well as in the levels of CKs, including isopentenyladenosine and cis-zeatin riboside; perception of HAMPs present in the oral secretions (OS) of the specialist herbivore Manduca sexta amplified these responses. The jasmonate pathway, which triggers many herbivore-induced processes, was not required for these HAMP-triggered changes, but rather suppressed the CK responses. Interestingly CK pathway changes were observed also in systemic leaves in response to wounding and OS application indicating a role of CKs in mediating long distance systemic processes in response to herbivory. Since wounding and grasshopper OS elicited similar accumulations of CKs in Arabidopsis thaliana L., we propose that CKs are integral components of wounding and HAMP-triggered responses in many plant species. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2016
Počet záznamů: 1