Počet záznamů: 1
Root-derived trans-zeatin cytokinin protects Arabidopsis plants against photoperiod stress
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SYSNO ASEP 0533734 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Root-derived trans-zeatin cytokinin protects Arabidopsis plants against photoperiod stress Tvůrce(i) Frank, M. (DE)
Cortleven, A. (DE)
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Schmülling, T. (DE)Celkový počet autorů 4 Zdroj.dok. Plant Cell and Environment. - : Wiley - ISSN 0140-7791
Roč. 43, č. 11 (2020), s. 2637-2649Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Arabidopsis thaliana ; cytokinin signalling ; photoperiod ; root-to-shoot signalling ; trans-zeatin Vědní obor RIV EF - Botanika Obor OECD Biochemical research methods CEP GA19-00973S GA ČR - Grantová agentura ČR EF16_019/0000827 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UEB-Q - RVO:61389030 UT WOS 000564566100001 EID SCOPUS 85090057032 DOI 10.1111/pce.13860 Anotace Recently, a novel type of abiotic stress caused by a prolongation of the light period—coined photoperiod stress—has been described in Arabidopsis. During the night after the prolongation of the light period, stress and cell death marker genes are induced. The next day, strongly stressed plants display a reduced photosynthetic efficiency and leaf cells eventually enter programmed cell death. The phytohormone cytokinin (CK) acts as a negative regulator of this photoperiod stress syndrome. In this study, we show that Arabidopsis wild-type plants increase the CK concentration in response to photoperiod stress. Analysis of cytokinin synthesis and transport mutants revealed that root-derived trans-zeatin (tZ)-type CKs protect against photoperiod stress. The CK signalling proteins ARABIDOPSIS HISTIDINE PHOSPHOTRANSFER PROTEIN 2 (AHP2), AHP3 and AHP5 and transcription factors ARABIDOPSIS RESPONSE REGULATOR 2 (ARR2), ARR10 and ARR12 are required for the protective activity of CK. Analysis of higher order B-type arr mutants suggested that a complex regulatory circuit exists in which the loss of ARR10 or ARR12 can rescue the arr2 phenotype. Together the results revealed the role of root-derived CK acting in the shoot through the two-component signalling system to protect from the negative consequences of strong photoperiod stress. Pracoviště Ústav experimentální botaniky Kontakt David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Rok sběru 2021 Elektronická adresa http://doi.org/10.1111/pce.13860
Počet záznamů: 1