Počet záznamů: 1
Changes in cytokinins are sufficient to alter developmental patterns of defense metabolites in Nicotiana attenuata
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SYSNO ASEP 0475960 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Changes in cytokinins are sufficient to alter developmental patterns of defense metabolites in Nicotiana attenuata Tvůrce(i) Bruetting, C. (DE)
Schaefer, N. (FR)
Vaňková, Radomíra (UEB-Q) RID, ORCID
Gase, K. (DE)
Baldwin, I.T. (DE)
Meldau, S. (DE)Celkový počet autorů 6 Zdroj.dok. Plant Journal. - : Wiley - ISSN 0960-7412
Roč. 89, č. 1 (2017), s. 15-30Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova proteinase-inhibitor production ; plant defense ; arabidopsis-thaliana ; leaf senescence ; insect interactions ; tobacco plants ; jasmonic acid ; manduca-sexta ; cis-zeatin ; responses ; cytokinins ; optimal defense ; herbivores ; inducible defense ; Nicotiana attenuata ; Manduca sexta ; plant development ; immunosenescence ; phytohormones Vědní obor RIV ED - Fyziologie Obor OECD Plant sciences, botany CEP LD14120 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000395810500002 DOI 10.1111/tpj.13316 Anotace Plant defense metabolites are well known to be regulated developmentally. The optimal defense (OD) theory posits that a tssue's fitness values and probability of attack should determine defense metabolite allocations. Young leaves are expected to provide a larger fitness value to the plant, and therefore their defense allocations should be higher when compared with older leaves. The mechanisms that coordinate development with defense remain unknown and frequently confound tests of the OD theory predictions. Here we demonstrate that cytokinins (CKs) modulate ontogeny-dependent defenses in Nicotiana attenuata. We found that leaf CK levels highly correlate with inducible defense expressions with high levels in young and low levels in older leaves. We genetically manipulated the developmental patterns of two different CK classes by using senescence- and chemically inducible expression of CK biosynthesis genes. Genetically modifying the levels of different CKs in leaves was sufficient to alter ontogenic patterns of defense metabolites. We conclude that the developmental regulation of growth hormones that include CKs plays central roles in connecting development with defense and therefore in establishing optimal patterns of defense allocation in plants. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2018
Počet záznamů: 1