ORCID Profile
0000-0002-9554-3627
Current Organisations
University of Adelaide
,
Government of Western Australia Department of Primary Industries and Regional Development
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Publisher: Elsevier BV
Date: 2022
Publisher: Elsevier BV
Date: 02-2023
Publisher: Informa UK Limited
Date: 03-06-2016
DOI: 10.1080/15226514.2016.1193464
Abstract: This research presented here, for the first time, elucidates the responses of several antioxidants in Pennisetum leaves exposed to varying concentrations of atrazine (0 - 200 mg•kg
Publisher: Springer Science and Business Media LLC
Date: 10-08-2020
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.PESTBP.2016.03.003
Abstract: Plants belonging to the genus Pennisetum have been reported to be resistant to atrazine, a widely used herbicide that also can cause serious pollution of soil and water. To evaluate the enzymatic antioxidant defense mechanism to the oxidative stress of atrazine, experiments focusing on the malondialdehyde (MDA) content and antioxidant enzyme in the leaf and root of Pennisetum americanum (L.) K. Schum (P. americanum) during long-term (68days) atrazine exposure were carried out. The test plant had not suffered obvious lipid membrane peroxidation, which was further confirmed by the result that the MDA content in the root and the leaf of the test plant did not significantly increase when treated with various concentrations of atrazine. The activity of the well-known antioxidases, such as superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and peroxidase (POD), was increased when the plants were exposed to atrazine, especially at moderate concentrations (20mgkg
Publisher: Springer Science and Business Media LLC
Date: 15-01-2022
DOI: 10.1007/S11356-021-18106-W
Abstract: Due to increased industrialization, arsenic (As) in the soil has become a serious issue for wheat production since past few decades. We investigated the role of Azospirillum brasilense and trans-zeatin riboside (tZR) in the mitigation of arsenic toxicity in wheat for 2 years (2018-2019 and 2019-2020) in pot experiments. Wheat plants grown in soil artificially spiked with arsenic (50, 70, and 100 μM) was left alone or amended with A. brasilense, tZR, or their combination as mitigation strategies. A treatment without arsenic or amendments was maintained as control. Arsenic-induced physiological damages were noticed in the wheat plants. Detrimental effects on the plant physiological functions, such as disruption of cell membrane stability, reduced water uptake, and stomatal functions, were noticed with increase in As toxicity. Application of biological amendments reversed the effects of As toxicity by increasing wheat plant growth rate, leaf area, and photosynthesis and also yield. Therefore, application of tZR and wheat seed inoculation with A. brasilense could be a sustainable and environmentally friendly strategy to mitigate arsenic-induced crop physiological damages.
Publisher: Springer Science and Business Media LLC
Date: 24-07-2019
Publisher: Elsevier BV
Date: 06-2016
Publisher: Scientific Research Publishing, Inc.
Date: 2013
Publisher: CABI Publishing
Date: 04-03-2021
Abstract: Despite efforts to reduce global food insecurity, success has been limited in many developing countries due to numerous inherent problems. The challenges and vulnerabilities associated with food security in these countries have been exacerbated by the current coronavirus (COVID-19) pandemic. As a rapid response strategy to minimize the coronavirus’ spread, countries have put in place different forms of movement restrictions, locally and globally, which have therefore affected agricultural production, food availability, and accessibility. Focusing on the four pillars of food security, this paper provides an overview of the pandemic’s impacts on food availability, accessibility, utilization, and stability drawing ex les from different developing countries. The report also suggests some response strategies that could be adopted or (where already in existence) strengthened to promote food security in developing countries, during and after a pandemic/crisis. The strategies of major concern to ensure continued availability and accessibility of food during and after a pandemic/crisis include (i) establishment of community-based food networks, (ii) food and agriculture data collection and maintenance, (iii) stabilizing food prices, (iv) infrastructural development for food security, (v) increasing investment in agricultural research and policies, (vi) adopting modern farming practices, and (vii) reduction and management of agricultural and food waste.
Publisher: Elsevier BV
Date: 05-2015
DOI: 10.1016/J.JHAZMAT.2015.01.071
Abstract: The authors investigated the effects of di-n-butyl phthalate (DBP) on root physiology and rhizosphere microbial communities of cucumber seedlings (sativus L. cv Jinyan No. 4). Root protein content and root activity were observed to decrease. From the ultrastructural micrographs, visible impact on the mitochondria, endoplasmic reticulum and vacuole were detected. Moreover, the number of starch grains increased, and some were adhered to other cell components which might be the most direct evidence of DBP causing cellular damage. Results of PCR-DGGE (denaturing gradient gel electrophoresis) indicated that DBP significantly changed the abundance, structure and composition of rhizosphere bacteria when the concentration was higher than 50 mg L(-1). The relative abundances of Firmicutes increased while that of Bacteroidetes decreased. Bacillus was detected as the dominant bacteria in DBP contaminated cucumber rhizospheric soil. The amount of Actinobacteridae and Pseudomonas decreased until it disappeared in the rhizosphere soil when exposed to DBP concentrations higher than 50 mg L(-1).
Publisher: Informa UK Limited
Date: 03-10-2019
Publisher: Springer Science and Business Media LLC
Date: 06-2023
Publisher: Springer Science and Business Media LLC
Date: 29-05-2020
Publisher: Informa UK Limited
Date: 04-2019
Publisher: Elsevier BV
Date: 03-2016
Publisher: Informa UK Limited
Date: 25-06-2021
Publisher: African Journals Online (AJOL)
Date: 15-12-2012
Publisher: Springer Science and Business Media LLC
Date: 17-08-2020
Publisher: Elsevier BV
Date: 10-2016
DOI: 10.1016/J.ECOENV.2016.06.035
Abstract: Calcium (Ca) has been reported to lessen oxidative damages in plants by upregulating the activities of antioxidant enzymes. However, atrazine mediated reactive oxygen species (ROS) reduction by Ca is limited. This study therefore investigated the effect of exogenously applied Ca on ROS, antioxidants activity and gene transcripts, the D1 protein (psbA gene), and chlorophyll contents in Pennisetum seedlings pre-treated with atrazine. Atrazine toxicity increased ROS production and enzyme activities (ascorbate peroxidase APX, peroxidase POD, Superoxide dismutase SOD, glutathione-S-transferase GST) but decreased antioxidants (APX, POD, and Cu/Zn SOD) and psbA gene transcripts. Atrazine also decreased the chlorophyll contents, but increased chlorophyll (a/b) ratio. Contrarily, Ca application to atrazine pre-treated seedlings lowered the harmful effects of atrazine by reducing ROS levels, but enhancing the accumulation of total chlorophyll contents. Ca-protected seedlings in the presence of atrazine manifested reduced APX and POD activity, whereas SOD and GST activity was further increased with Ca application. Antioxidant gene transcripts that were down-regulated by atrazine toxicity were up-regulated with the application of Ca. Calcium application also resulted in up-regulation of the D1 protein. In conclusion, ability of calcium to reverse atrazine-induced oxidative damage and calcium regulatory role on GST in Pennisetum was presented.
Publisher: Elsevier BV
Date: 2022
Publisher: Springer Science and Business Media LLC
Date: 02-05-2019
Publisher: Eurasian Journal of Soil Sciences
Date: 2021
DOI: 10.18393/EJSS.801099
Publisher: Springer Science and Business Media LLC
Date: 22-04-2022
DOI: 10.1007/S00374-022-01642-Z
Abstract: The effect of rapid rewetting of dry soil to a water content optimal for microbial activity on soil respiration and nutrient cycling has been extensively studied. However, with smaller rainfall events, dry soil may also rewet more slowly with an interval between partial rewetting events. In this experiment, soil unamended or amended with faba bean residue (C/N 9) was incubated at 50% water-holding capacity (WHC) for 2 weeks, then the soil of the rewet treatments was air-dried and incubated dry for 2 weeks. Then, the air-dried soil was exposed to six rewetting treatments: rewet rapidly to 50% WHC once on day 0 (RR50), rewet partially to 25% WHC once on day 0 (PR25), or rewet slowly by two applications of 25% WHC each with the first rewetting on day 0 and the second after 6 h (SR6), 12 h (SR12), 36 h (SR36), or 60 h (SR60). Constantly moist (CM) soil was kept at 50% WHC throughout the experiment. The flush of respiration after the final rewetting followed the order SR6 RR50 SR12 SR36 PR25, SR60. Microbial biomass C on the first day after the final rewetting decreased in the order RR50 PR25 SR6 SR12 SR 36 SR60, CM. We conclude that slow rewetting can increase the flush of respiration compared to rapid rewetting, but only if the second partial rewetting occurs 6 h after the first. The size of the flush decreased with increasing time between the two rewetting events.
Publisher: Springer Science and Business Media LLC
Date: 03-12-2015
DOI: 10.1007/S11356-015-5855-Y
Abstract: Pollution of agricultural soils caused by widely employed plastic products, such as phthalic acid esters (PAEs), are becoming widespread in China, and they have become a threat to human health and the environment. However, little information is available on the influence of PAEs on vegetable crops. In this study, effects of different dimethyl phthalate (DMP) treatments (0, 30, 50, 100, and 200 mg L(-1)) on seed germination and growth of cucumber seedlings were investigated. Although germination rate showed no significant difference compared to control, seed germination time was significantly delayed at DMP greater than 50 mg L(-1). Concentrations of DMP greater than 30 mg L(-1) reduced cucumber lateral root length and number. The measurement of five physiological indexes in cucumber leaves with increasing DMP concentration revealed a decrease in leaf chlorophyll content, while proline and H2O2 contents increased. Peroxidase (POD) and catalase (CAT) activities increased in cucumber plants under 30 and 50 mg L(-1) DMP treatments compared to control while after a 7-day treatment, these activities were seriously reduced under 100 and 200 mg L(-1) DMP treatments. According to transmission electron microscopy (TEM) micrographic images, the control and 30 mg L(-1) DMP treatments caused no change to leaf chloroplast shape with well-structured thylakoid membrane and parallel pattern of lamellae. At concentrations higher than 30 mg L(-1), DMP altered the ultrastructure of chloroplast, damaged membrane structure, disordered the lamellae, and increased the number and volume of starch grains. Moreover, the envelope of starch grains began to degrade under 200 mg L(-1) DMP treatment.
Publisher: Springer Science and Business Media LLC
Date: 18-05-2021
Publisher: International Journal Of Advanced Research
Date: 30-11-2019
Publisher: Informa UK Limited
Date: 21-03-2018
DOI: 10.1080/15226514.2017.1393385
Abstract: Pearl millet has been recommended beneficial for several therapeutic purposes. However, little is known of the physiological responses to abiotic stressors, especially of atrazine. In order to elucidate the physiological and molecular responses of pearl millet to atrazine stress, we studied the response of various biomarkers under increasing herbicide concentrations (0, 5, 10, and 50 mg/kg). We also quantified the levels of malondialdehyde (MDA) and reactive oxygen species (ROS) (H
Publisher: Springer Science and Business Media LLC
Date: 23-08-2018
Publisher: Elsevier BV
Date: 12-2019
Location: No location found
Location: Australia
No related grants have been discovered for Kehinde Erinle.