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Emissions of putative isoprene oxidation products from mango branches under abiotic stress

Journal Article · · Journal of Experimental Botany
DOI:https://doi.org/10.1093/jxb/ert202· OSTI ID:1407194
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [7];  [8];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Climate Science Dept. Earth Science Division
  2. USDA Agriculture Research Service, Tucson, AZ (United States)
  3. Univ. of Arizona, Tucson, AZ (United States). Dept. of Chemistry & Biochemistry. Dept. of Soil, Water and Environmental Science
  4. National Inst. of Amazonian Research (INPA), Manaus (Brazil). Large-Scale Biosphere-Atmosphere Experiment (LBA)
  5. National Inst. of Amazonian Research (INPA), Manaus (Brazil). Large-Scale Biosphere-Atmosphere Experiment (LBA); Max Planck Inst. for Chemistry, Mainz (Germany). Biogeochemistry Dept.
  6. Max Planck Inst. for Chemistry, Mainz (Germany). Biogeochemistry Dept.
  7. National Center for Atmospheric Research, Boulder, CO (United States). Atmospheric Chemistry Division
  8. Univ. of Queensland, Brisbane, QLD (Australia). Australian Inst. for Bioengineering and Nanotechnology

Although several per cent of net carbon assimilation can be re-released as isoprene emissions to the atmosphere by many tropical plants, much uncertainty remains regarding its biological significance. In a previous study, we detected emissions of isoprene and its oxidation products methyl vinyl ketone (MVK) and methacrolein (MACR) from tropical plants under high temperature/light stress, suggesting that isoprene is oxidized not only in the atmosphere but also within plants. However, a comprehensive analysis of the suite of isoprene oxidation products in plants has not been performed and production relationships with environmental stress have not been described. In this study, putative isoprene oxidation products from mango (Mangifera indica) branches under abiotic stress were first identified. High temperature/light and freeze–thaw treatments verified direct emissions of the isoprene oxidation products MVK and MACR together with the first observations of 3-methyl furan (3-MF) and 2-methyl-3-buten-2-ol (MBO) as putative novel isoprene oxidation products. Mechanical wounding also stimulated emissions of MVK and MACR. Photosynthesis under 13CO2 resulted in rapid (<30min) labelling of up to five carbon atoms of isoprene, with a similar labelling pattern observed in the putative oxidation products. These observations highlight the need to investigate further the mechanisms of isoprene oxidation within plants under stress and its biological and atmospheric significance.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); National Science Foundation (NSF) (United States)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1407194
Journal Information:
Journal of Experimental Botany, Journal Name: Journal of Experimental Botany Journal Issue: 12 Vol. 64; ISSN 0022-0957
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (14)

Isoprene Responses and Functions in Plants Challenged by Environmental Pressures Associated to Climate Change journal July 2017
Rust Infection of Black Poplar Trees Reduces Photosynthesis but Does Not Affect Isoprene Biosynthesis or Emission journal November 2018
Below versus above Ground Plant Sources of Abscisic Acid (ABA) at the Heart of Tropical Forest Response to Warming journal July 2018
A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis journal November 2018
Leaf level emissions of volatile organic compounds (VOC) from some Amazonian and Mediterranean plants journal January 2013
A laboratory high-throughput glass chamber using dynamic headspace TD-GC/MS method for the analysis of whole Brassica napus L. plantlet volatiles under cadmium-related abiotic stress journal February 2018
Comparing the Effects of High Hydrostatic Pressure and Thermal Processing on Blanched and Unblanched Mango (Mangifera indica L.) Nectar: Using Headspace Fingerprinting as an Untargeted Approach journal February 2014
Lethal heat stress-dependent volatile emissions from tobacco leaves: what happens beyond the thermal edge? journal July 2019
Metabolic engineering of volatile isoprenoids in plants and microbes: Exploiting volatile isoprenoids for biotechnology journal May 2014
Bidirectional exchange of biogenic volatiles with vegetation: emission sources, reactions, breakdown and deposition: Bidirectional BVOC exchange journal May 2014
The capacity to emit isoprene differentiates the photosynthetic temperature responses of tropical plant species journal June 2019
Carotenoid oxidation products as stress signals in plants journal December 2013
Diel and seasonal changes of biogenic volatile organic compounds within and above an Amazonian rainforest journal January 2015
A mechanism for biogenic production and emission of MEK from MVK decoupled from isoprene biosynthesis journal January 2019

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