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Effects of elevated CO2 concentration and temperature on the mixed-culture grown wild mustard (Sinapis arvensis L.) response to auxin herbicide.
- Source :
- Environmental Science & Pollution Research; Jan2023, Vol. 30 Issue 5, p13711-13725, 15p
- Publication Year :
- 2023
-
Abstract
- Recently, there has been growing concern over the potential impact of CO<subscript>2</subscript> concentration and temperature on herbicide efficacy. The aim of the study was to examine the influence of single elevated CO<subscript>2</subscript> (400 vs. 800 ppm) and elevated CO<subscript>2</subscript> in combination with temperature (21 °C vs. 25 °C) on the effects of auxin herbicide 4-chloro-2-methylphenoxyacetic acid (MCPA) (0.5–2 × field recommended rate) to wild mustard (Sinapis arvensis L.) grown in mixed-culture with spring barley (Hordeum vulgare L.). MCPA had a detrimental effect on aboveground and belowground biomass, content of chlorophylls, enzymatic and non-enzymatic antioxidants and induced oxidative stress. The significant decline in photosynthetic rate, stomatal conductance and transpiration with MCPA dose was detected. Elevated CO<subscript>2</subscript> reinforced MCPA efficacy on S. arvensis: sharper decline in biomass, photosynthetic rate and antioxidant enzymes and more pronounced lipid peroxidation were detected. Under elevated CO<subscript>2</subscript> and temperature, MCPA efficacy to control S. arvensis dropped due to herbicide dilution because of increased root:shoot ratio, higher activity of antioxidants and less pronounced oxidative damage. Reinforced MCPA impact on weeds under elevated CO<subscript>2</subscript> resulted in higher H. vulgare biomass, while decreased MCPA efficacy under elevated CO<subscript>2</subscript> and temperature reduced H. vulgare biomass. [ABSTRACT FROM AUTHOR]
- Subjects :
- HERBICIDES
AUXIN
MUSTARD
BARLEY
PHOTOSYNTHETIC rates
CARBON dioxide
Subjects
Details
- Language :
- English
- ISSN :
- 09441344
- Volume :
- 30
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Environmental Science & Pollution Research
- Publication Type :
- Academic Journal
- Accession number :
- 161691837
- Full Text :
- https://doi.org/10.1007/s11356-022-23134-1