Počet záznamů: 1
Cell-Type-Specific Cytokinin Distribution within the Arabidopsis Primary Root Apex
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SYSNO ASEP 0447322 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Cell-Type-Specific Cytokinin Distribution within the Arabidopsis Primary Root Apex Tvůrce(i) Antoniadi, I. (SE)
Plačková, Lenka (UEB-Q) ORCID, RID
Simonovik, B. (SE)
Doležal, Karel (UEB-Q) RID, ORCID
Turnbull, C. (SE)
Ljung, K. (SE)
Novák, Ondřej (UEB-Q) RID, ORCID, SAIZdroj.dok. Plant Cell. - : Oxford University Press - ISSN 1040-4651
Roč. 27, č. 7 (2015), s. 1955-1967Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova SOLID-PHASE EXTRACTION ; ENDOPLASMIC-RETICULUM ; MERISTEM ACTIVITY Vědní obor RIV CB - Analytická chemie, separace CEP GA14-34792S GA ČR - Grantová agentura ČR LO1204 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LK21306 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000359358600014 DOI 10.1105/tpc.15.00176 Anotace Cytokinins (CKs) play a crucial role in many physiological and developmental processes at the levels of individual plant components (cells, tissues, and organs) and by coordinating activities across these parts. High-resolution measurements of intracellular CKs in different plant tissues can therefore provide insights into their metabolism and mode of action. Here, we applied fluorescence-activated cell sorting of green fluorescent protein (GFP)-marked cell types, combined with solid-phase microextraction and an ultra-high-sensitivity mass spectrometry (MS) method for analysis of CK biosynthesis and homeostasis at cellular resolution. This method was validated by series of control experiments, establishing that protoplast isolation and cell sorting procedures did not greatly alter endogenous CK levels. The MS-based method facilitated the quantification of all the well known CK isoprenoid metabolites in four different transgenic Arabidopsis thaliana lines expressing GFP in specific cell populations within the primary root apex. Our results revealed the presence of a CK gradient within the Arabidopsis root tip, with a concentration maximum in the lateral root cap, columella, columella initials, and quiescent center cells. This distribution, when compared with previously published auxin gradients, implies that the well known antagonistic interactions between the two hormone groups are cell type specific. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2016
Počet záznamů: 1