Počet záznamů: 1
Carbohydrates and gibberellins relationship in potato tuberization
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SYSNO ASEP 0476654 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Carbohydrates and gibberellins relationship in potato tuberization Tvůrce(i) Ševčíková, H. (CZ)
Mašková, P. (CZ)
Tarkowská, Danuše (UEB-Q) RID, ORCID
Mašek, T. (CZ)
Lipavská, H. (CZ)Celkový počet autorů 5 Zdroj.dok. Journal of Plant Physiology. - : Elsevier - ISSN 0176-1617
Roč. 214, JUL (2017), s. 53-63Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Carbohydrate distribution ; Gibberellin ; Photoautotrophic cultivation ; Potato ; Tuberization Vědní obor RIV CB - Analytická chemie, separace Obor OECD Plant sciences, botany CEP GA14-34792S GA ČR - Grantová agentura ČR Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000405457700007 EID SCOPUS 85018492802 DOI 10.1016/j.jplph.2017.04.003 Anotace Potato represents the third most important crop worldwide and therefore to understand regulations of tuber onset is crucial from both theoretical and practical points of view. Photosynthesis and related carbohydrate status along with phytohormone balance belong to the essential factors in regulation of plant development including storage organ formation. In our work we used potato (Solanum tuberosum) cv. Lada and its spontaneously tuberizing mutant (ST plants) grown in vitro under low carbohydrate availability (non-inductive conditions). Small plant phenotype and readiness to tuberization of ST plants was, however, not accompanied by lower gibberellins levels, as determined by UHPLC–MS/MS. Therefore, we focused on the other inducing factor, carbohydrate status. Using HPLC, we followed changes in carbohydrate distribution under mixotrophic (2.5% sucrose in medium) and photoautotrophic conditions (no sucrose addition and higher gas and light availability) and observed changes in soluble carbohydrate allocation and starch deposition, favouring basal stem part in mutants. In addition, the determination of tuber-inducing marker gene expressions revealed increased levels of StSP6A in ST leaves. Collectively these data point towards the possibility of two parallel cross-talking pathways (carbohydrate − and gibberellin- dependent ones) with the power of both to outcompete the other one when its signal is for some reason extraordinary strong. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2018
Počet záznamů: 1