Browsing by Author "Odukoya, Johnson"
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Item Open Access Impact of crude oil on yield and phytochemical composition of selected green leafy vegetables(Taylor and Francis, 2019-01-07) Odukoya, Johnson; Lambert, Ronnie; Sakrabani, RubenTotal petroleum hydrocarbons (TPH) cleanup standards, intervention and/or target values, are designed to effectively manage introduction of toxic petroleum hydrocarbons into the environment. This research assessed the impact of some crude oil remediation intervention values (CRIV), involving sublethal concentrations of crude oil, on yield and phytochemical contents of kale (Brassica oleracea L.) and lettuce (Lactuca sativa L.). Crude oil contamination within the range examined did not affect emergence; yield and phytochemical distributions were affected at some levels of contamination, particularly 10000 mg·kg−1 TPH. There is the potential of TPH to moderate effects of crude oil at 10000 mg·kg−1 to enhance contents of some phenolics and organic acids in green leafy vegetables, but it causes accelerated maturity and leaf senescence. Use of CRIV below 10000 mg·kg−1 TPH appears to be effective.Item Open Access Understanding the impacts of crude oil and its induced abiotic stresses on agrifood production: a review(MDPI, 2019-06-23) Odukoya, Johnson; Lambert, Ronnie; Sakrabani, RubenIn many parts of the world, the agricultural sector is faced with a number of challenges including those arising from abiotic environmental stresses which are the key factors responsible for most reductions in agrifood production. Crude oil contamination, an abiotic stress factor and a common environmental contaminant, at toxic levels has negative impacts on plants. Although various attempts have been made to demonstrate the impact of abiotic stresses on crops, the underlying factors responsible for the effects of crude oil and its induced abiotic stresses on the composition of the stressed plants are poorly understood. Hence, this review provides an in-depth examination of the: (1) effect of petroleum hydrocarbons on plants; (2) impact of abiotic environmental stresses on crop quality; (3) mechanistic link between crude oil stress and its induced abiotic stresses; as well as (4) mode of action/plant response mechanism to these induced stresses. The paper clearly reveals the implications of crude oil-induced abiotic stresses arising from the soil-root-plant route and from direct application on plant leaves.