Two separate UV-B radiation wavelength regions control expression of different molecular markers in Arabidopsis thaliana

Functional Plant Biology : FPB
Irina KalbinaAke Strid

Abstract

Fluence-response curves were obtained at nine wavelengths in the interval 280-360 nm for mRNA transcripts of four molecular markers induced by ultraviolet-B (UV-B) radiation in Arabidopsis thaliana (L.) Heynh.: CHS (encoding chalcone synthase), PDX1.3 (encoding an enzyme involved in formation of pyridoxine), MEB5.2 (encoding a protein with unknown function but which is strongly upregulated by UV-B), and LHCB1*3 (encoding a chlorophyll a/b binding protein). Intact Arabidopsis plants were irradiated for 3 h using a high intensity deuterium radiation source and narrow bandwith filters without supplementary PAR. The results obtained suggest the existence of two distinct UV-B signal responses: one sensitive between 300 and 310 nm and the other sensitive around 280-290 nm. Among the investigated molecular markers, CHS and PDX1.3 were regulated through the chromophore absorbing around 300 nm, whereas MEB5.2 and LHCB1*3 were regulated through the chromophore absorbing at 280-290 nm. The results obtained show that at least two signal transduction pathways exist that regulate gene expression as a result of absorption of UV-B radiation in plants.

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Citations

Jul 12, 2018·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·L Aranzazú Díaz-RamosGareth I Jenkins
Feb 6, 2019·Scientific Reports·Gyula CzégényÉva Hideg
Jul 4, 2012·Plant Signaling & Behavior·Lei JiangShaoshan Li
Jul 19, 2013·The Arabidopsis Book·Kimberley TilbrookRoman Ulm
Apr 30, 2009·Annual Review of Plant Biology·Gareth I Jenkins
Jan 22, 2020·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Susanne NeugartÅke Strid
Jan 11, 2019·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Minjie QianÅke Strid
Jan 21, 2021·Frontiers in Plant Science·Carolina Falcato Fialho PalmaÅke Strid
Sep 13, 2021·Physiologia Plantarum·Carolina Falcato Fialho PalmaLuis Orlando Morales
Feb 27, 2009·Fitoterapia·Wen Jing Zhang, Lars Olof Björn

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Methods Mentioned

BETA
PCR
environmental stress

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