J 2021

Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis

PREROSTOVA, S.; P.I. DOBREV; V. KNIRSCH; J. JAROSOVA; A. GAUDINOVA et al.

Základní údaje

Originální název

Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis

Autoři

PREROSTOVA, S.; P.I. DOBREV; V. KNIRSCH; J. JAROSOVA; A. GAUDINOVA; B. ZUPKOVA; I.T. PRASIL; T. JANDA; B. BRZOBOHATY; Jan SKALÁK a R. VANKOVA

Vydání

International Journal of Molecular Sciences, Basel, Multidisciplinary Digital Publishing Institute, 2021, 1422-0067

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10608 Biochemistry and molecular biology

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/21:00124354

Organizační jednotka

Středoevropský technologický institut

EID Scopus

Klíčová slova anglicky

auxin; combined stress; cryptochrome; cytokinin; gene expression; gibberellin; phytochrome; plant hormones

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 18. 5. 2022 13:43, Mgr. Pavla Foltynová, Ph.D.

Anotace

V originále

Plant survival in temperate zones requires efficient cold acclimation, which is strongly affected by light and temperature signal crosstalk, which converge in modulation of hormonal responses. Cold under low light conditions affected Arabidopsis responses predominantly in apices, possibly because energy supplies were too limited for requirements of these meristematic tissues, despite a relatively high steady-state quantum yield. Comparing cold responses at optimal light intensity and low light, we found activation of similar defence mechanisms-apart from CBF1-3 and CRF3-4 pathways, also transient stimulation of cytokinin type-A response regulators, accompanied by fast transient increase of trans-zeatin in roots. Upregulated expression of components of strigolactone (and karrikin) signalling pathway indicated involvement of these phytohormones in cold responses. Impaired response of phyA, phyB, cry1 and cry2 mutants reflected participation of these photoreceptors in acquiring freezing tolerance (especially cryptochrome CRY1 at optimal light intensity and phytochrome PHYA at low light). Efficient cold acclimation at optimal light was associated with upregulation of trans-zeatin in leaves and roots, while at low light, cytokinin (except cis-zeatin) content remained diminished. Cold stresses induced elevation of jasmonic acid and salicylic acid (in roots). Low light at optimal conditions resulted in strong suppression of cytokinins, jasmonic and salicylic acid.

Návaznosti

EF16_019/0000738, projekt VaV
Název: Centrum experimentální biologie rostlin