Počet záznamů: 1
New Urea Derivatives Are Effective Anti-senescence Compounds Acting Most Likely via a Cytokinin-Independent Mechanism
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SYSNO ASEP 0494180 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název New Urea Derivatives Are Effective Anti-senescence Compounds Acting Most Likely via a Cytokinin-Independent Mechanism Tvůrce(i) Nisler, Jaroslav (UEB-Q) RID, ORCID
Zatloukal, M. (CZ)
Sobotka, Roman (MBU-M) RID, ORCID
Pilný, Jan (MBU-M) ORCID
Zdvihalová, Barbora (MBU-M)
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Strnad, Miroslav (UEB-Q) RID, ORCID
Spíchal, L. (CZ)Celkový počet autorů 8 Číslo článku 1225 Zdroj.dok. Frontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
Roč. 9, SEP 11 (2018)Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova induced leaf senescence ; wheat triticum-aestivum ; arabidopsis-thaliana ; abscisic-acid ; gene-expression ; abiotic stress ; salt stress ; chlorophyll degradation ; cucumber cotyledons ; biological-activity ; ases ; cytokinin ; photosystem II ; senescence ; stress ; thidiazuron ; wheat Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Plant sciences, botany CEP LO1204 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LO1416 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy LM2015055 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UEB-Q - RVO:61389030 ; MBU-M - RVO:61388971 UT WOS 000444240700001 DOI 10.3389/fpls.2018.01225 Anotace Stress-induced senescence is a global agro-economic problem. Cytokinins are considered to be key plant anti-senescence hormones, but despite this practical function their use in agriculture is limited because cytokinins also inhibit root growth and development. We explored new cytokinin analogs by synthesizing a series of 1,2,3-thiadiazol-5-yl urea derivatives. The most potent compound, 1-(2-methoxy-ethyl)-3-1,2,3-thiadiazol-5-yl urea (ASES Anti-Senescence Substance), strongly inhibited dark-induced senescence in leaves of wheat (Triticum aestivum L.) and Arabidopsis thaliana. The inhibitory effect of ASES on wheat leaf senescence was, to the best of our knowledge, the strongest of any known natural or synthetic compound. In vivo, ASES also improved the salt tolerance of young wheat plants. Interestingly, ASES did not affect root development of wheat and Arabidopsis, and molecular and classical cytokinin bioassays demonstrated that ASES exhibits very low cytokinin activity. A proteomic analysis of the ASES-treated leaves further revealed that the senescence-induced degradation of photosystem II had been very effectively blocked. Taken together, our results including data from cytokinin content analysis demonstrate that ASES delays leaf senescence by mechanism(s) different from those of cytokinins and, more effectively. No such substance has yet been described in the literature, which makes ASES an interesting tool for research of photosynthesis regulation. Its simple synthesis and high efficiency predetermine ASES to become also a potent plant stress protectant in biotechnology and agricultural industries. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2019
Počet záznamů: 1