Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2011 Feb;62(2):420-6.
doi: 10.1007/s00284-010-9724-0. Epub 2010 Aug 1.

Short-term UV-B and UV-C radiations preferentially decrease spermidine contents and arginine decarboxylase transcript levels of Synechocystis sp. PCC 6803

Saowarath Jantaro  1 , Apiradee Pothipongsa, Suparaporn Khanthasuwan, Aran Incharoensakdi
Affiliations

Short-term UV-B and UV-C radiations preferentially decrease spermidine contents and arginine decarboxylase transcript levels of Synechocystis sp. PCC 6803

Saowarath Jantaro et al. Curr Microbiol. 2011 Feb.

Abstract

To investigate the short term effect of ultraviolet (UV) radiations on changes in pigments and polyamine contents, Synechocystis sp. PCC 6803 cells after exposure to UV-radiation were extracted by dimethylformamide and perchloric acid for pigments and polyamines determination, respectively. Cell growth was slightly decreased after 1 h exposure to UV-A and UV-B radiations. UV-C had little effect on cell growth despite the decrease of photosynthetic rate by about 18%. UV-A and UV-B decreased the contents of chlorophyll a and carotenoids whereas UV-C decreased chlorophyll a but had no effect on carotenoids. Spermidine contents were unaffected by UV-A, in contrast to the reduction of 25 and 50% by UV-B and UV-C, respectively. All three types of UV-radiation particularly reduced perchloric acid-insoluble spermidine. Importantly, putrescine and spermine which accounted for less than 1% of intracellular polyamines were increased by about three- to eight-fold by UV-B and UV-C, respectively. The changes in polyamines contents by UV-B and UV-C were consistent with the changes in transcript levels of arginine decarboxylase mRNA, but not with the protein levels. The decrease in the transcripts of adc2 but not adc1 was observed with UV-B and UV-C treatments.

PubMed Disclaimer

References

    1. Proc Natl Acad Sci U S A. 1998 Sep 15;95(19):11140-5 - PubMed
    1. Photochem Photobiol. 2004 Nov-Dec;80(3):499-506 - PubMed
    1. Planta. 2008 Jul;228(2):341-53 - PubMed
    1. Plant Physiol. 2007 Nov;145(3):1061-72 - PubMed
    1. J Biol Chem. 1993 Aug 15;268(23):17348-53 - PubMed

Publication types

MeSH terms

LinkOut - more resources