Rapid conversion of isoprene photooxidation products in terrestrial plants.
Journal
Communications earth & environment
ISSN: 2662-4435
Titre abrégé: Commun Earth Environ
Pays: England
ID NLM: 101772745
Informations de publication
Date de publication:
2020
2020
Historique:
entrez:
22
2
2021
pubmed:
23
2
2021
medline:
23
2
2021
Statut:
ppublish
Résumé
Isoprene is emitted from the biosphere into the atmosphere, and may strengthen the defense mechanisms of plants against oxidative and thermal stress. Once in the atmosphere, isoprene is rapidly oxidized, either to isoprene-hydroxy-hydroperoxides (ISOPOOH) at low levels of nitrogen oxides, or to methyl vinyl ketone (MVK) and methacrolein at high levels. Here we combine uptake rates and deposition velocities that we obtained in laboratory experiments with observations in natural forests to show that 1,2-ISOPOOH deposits rapidly into poplar leaves. There, it is converted first to cytotoxic MVK and then most probably through alkenal/ one oxidoreductase (AOR) to less toxic methyl ethyl ketone (MEK). This detoxification process is potentially significant globally because AOR enzymes are ubiquitous in terrestrial plants. Our simulations with a global chemistry-transport model suggest that around 6.5 Tg yr
Identifiants
pubmed: 33615239
doi: 10.1038/s43247-020-00041-2
pmc: PMC7894407
mid: NIHMS1669554
doi:
Types de publication
Journal Article
Langues
eng
Pagination
44Subventions
Organisme : NASA
ID : NNX14AP89G
Pays : United States
Déclaration de conflit d'intérêts
Competing interests The authors declare no competing interests.
Références
J Chem Ecol. 2017 Jun;43(6):573-585
pubmed: 28600687
J Am Soc Mass Spectrom. 2010 Jun;21(6):1037-44
pubmed: 20335047
J Biol Chem. 2011 Mar 4;286(9):6999-7009
pubmed: 21169366
Environ Sci Technol. 2010 Sep 15;44(18):7096-101
pubmed: 20715865
Plant Cell. 2019 Feb;31(2):346-367
pubmed: 30705134
Plant Biol (Stuttg). 2010 Mar;12(2):302-16
pubmed: 20398237
Science. 1983 Jul 15;221(4607):277-9
pubmed: 17815197
Ann Bot. 2008 Jan;101(1):5-18
pubmed: 17921528
Planta. 2005 Nov;222(5):777-86
pubmed: 16052321
Plant Physiol. 2015 Sep;169(1):560-75
pubmed: 26162427
Chem Rev. 2018 Apr 11;118(7):3337-3390
pubmed: 29522327
Plant Cell Environ. 2019 Oct;42(10):2808-2826
pubmed: 31350912
Atmos Chem Phys. 2016;16(9):5969-5991
pubmed: 29681921
Environ Sci Technol. 2016 Oct 4;50(19):10739-10745
pubmed: 27611340
Atmos Chem Phys. 2016;16(21):13561-13577
pubmed: 29619045
Environ Sci Technol. 2009 Nov 1;43(21):8338-43
pubmed: 19924966
Science. 2010 Nov 5;330(6005):816-9
pubmed: 20966216
Geophys Res Lett. 2019 Mar 16;46(5):2940-2948
pubmed: 31068737
FEBS Lett. 2012 Apr 24;586(8):1208-13
pubmed: 22575657
Trends Plant Sci. 2002 Sep;7(9):405-10
pubmed: 12234732
Anal Chem. 2017 Jun 6;89(11):5824-5831
pubmed: 28436218
Proc Natl Acad Sci U S A. 2015 Feb 3;112(5):E392-401
pubmed: 25605913
Plant J. 2003 Apr;34(2):205-16
pubmed: 12694595
Science. 2009 Aug 7;325(5941):730-3
pubmed: 19661425
Proc Natl Acad Sci U S A. 2020 Jan 21;117(3):1596-1605
pubmed: 31907313
J Am Chem Soc. 2017 Apr 19;139(15):5367-5377
pubmed: 28398047
Eur J Biochem. 1998 Jul 1;255(1):271-8
pubmed: 9692928
Environ Sci Technol. 2007 Mar 1;41(5):1514-21
pubmed: 17396635
Free Radic Biol Med. 1991;11(1):81-128
pubmed: 1937131
Plant Physiol. 2016 Apr;170(4):1945-61
pubmed: 26850277
Plant Physiol. 1994 Feb;104(2):617-621
pubmed: 12232112