期刊
PLANTA DANINHA
卷 37, 期 -, 页码 -出版社
UNIV FEDERAL VICOSA
DOI: 10.1590/S0100-83582019370100073
关键词
climate change; Lolium multiflorum L.; remediation; allelopathy
资金
- CAPES [15/2014]
- CNPq [310538/2015-7 CNPq]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brasil (CAPES) [001]
- CNPq (Bolsas no Pais - Ciencia sem Fronteiras/CHAMADA DE PROJETOS - MEC/MCTI/CAPES/CNPQ/FAPS - BOLSA PESQUISADOR VISITANTE - PVE 2014) [400897/2014-8]
The long temporal persistence of select hcibicides negatively impacts crops sown in succession to irrigated rice. One way to reduce these compounds in the soil over time is through phytoremediation. However, elevated CO2 concentrations may interfere with the phytoremediation process. Another consequence of climate change is the production of allclopathic compounds by forage species used as remedial agents. This study aimed to evaluate the impact of elevated CO2 concentration and drought stress on the remediation of soil samples contaminated with imazapyr + imazapic herbicides by Italian ryegrass and any subsequential affect on the allelopathic effect of this species. We report that the increasing CO2 decreased the phytoremediation potential of ryegrass. Water stress combined with a CO2 concentration of 700 mu mol mol(-1) caused increased allelopathy. Overall, these are the first data to indicate a significant effect of higher CO2 levels with respect to both phytoremediation efficacy and allelopathic potential of the plant species used in phytoremediation.
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