The role of UV-irradiation pretreatment on the degradation of 2,4-dichlorophenoxyacetic acid in water

Luminescence ◽  
2010 ◽  
Vol 26 (3) ◽  
pp. 156-161 ◽  
Author(s):  
O. Tchaikovskaya ◽  
I. Sokolova ◽  
G.V. Mayer ◽  
E. Karetnikova ◽  
E. Lipatnikova ◽  
...  
Keyword(s):  
Uv Irradiation ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid

The role of a metabolic intermediate in the biodegradation of inhibitory substrates

1997 ◽  
Vol 36 (10) ◽  
pp. 27-36 ◽  
Author(s):  
P. Mungkarndee ◽  
S. M. Rao Bhamidimarri ◽  
A. J. Mawson ◽  
R. Chong
Keyword(s):  
The Other ◽  
Metabolic Product ◽  
Dichlorophenoxyacetic Acid ◽  
Mutual Inhibition ◽  
Metabolic Intermediate ◽  
Batch Cultures ◽  
Ortho Cresol ◽  
2,4 Dichlorophenoxyacetic Acid

Biodegradation of the mixed inhibitory substrates, 2,4-dichlorophenoxyacetic acid (2,4-D) and para-chloro-ortho-cresol (PCOC) was studied in aerobic batch cultures. Each substrate added beyond certain concentrations inhibited the degradation of the other. This mutual inhibition was found to be enhanced by 2,4-dichlorophenol (2,4-DCP) which is an intermediate metabolic product of 2,4-D. When 2,4-DCP accumulated to approximatelY 40 mg/l degradation of all compounds in the mixed 2,4-D and PCOC substrate system was completely inhibited. The degradation of 2,4-D and PCOC individually was also found to be inhibited by elevated concentrations of 2,4-DCP added externally, while PCOC inhibited the utilization of the intermediate.

Herbicide-Induced Ethylene Production: Role of the Gas in Sublethal Doses of 2,4-D

Weed Science ◽  
1968 ◽  
Vol 16 (4) ◽  
pp. 498-500 ◽  
Author(s):  
F. B. Abeles
Keyword(s):  
Carbon Dioxide ◽  
Zea Mays ◽  
Glycine Max ◽  
Ethylene Production ◽  
Competitive Inhibitor ◽  
Inhibitory Effect ◽  
Dichlorophenoxyacetic Acid ◽  
Sublethal Doses ◽  
2,4 Dichlorophenoxyacetic Acid

Ethylene production was stimulated by 2,4-dichlorophenoxyacetic acid (2,4-D) from light-grown corn (Zea mays L., var. XL-15) and soybeans (Glycine max Merr., var. Hawkeye). Ethylene had an inhibitory effect on the growth of corn and soybeans, but a reversal of the ethylene effect could not be clearly demonstrated using the competitive inhibitor, carbon dioxide. Ethylene did not mimic the ability of 2,4-D to cause growth curvatures. It was concluded that ethylene played a role in the activity of sublethal amounts of 2,4-D.

scholarly journals Effects of Temperature on Seed Germination of Plantago lanceolata and Management in Carya illinoinensis Production

Plants ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 308
Author(s):  
Timothy L. Grey ◽  
Kayla M. Eason ◽  
Lenny Wells ◽  
Nicholas T. Basinger
Keyword(s):  
Seed Germination ◽  
Thermal Gradient ◽  
Plantago Lanceolata ◽  
Carya Illinoinensis ◽  
Dichlorophenoxyacetic Acid ◽  
Greenhouse Experiments ◽  
Effects Of Temperature ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Diurnal Temperatures

Plantago lanceolata L. (buckhorn plantain) is an encroaching winter weed described as one of the most successful noncultivated colonizing species around the world. Control of P. lanceolata in southeastern USA Carya illinoinensis (Wangenh.) K. Koch production has not been studied, nor has the role of temperature on germination using a thermal gradient table. Seed of P. lanceolata collected from a Georgia C. illinoinensis grove were tested for the effects of temperature over time to establish differences in effects on germination using a thermal gradient table. Temperatures ranged from 13.5 to 30.5 °C for 288 h. Cumulative P. lanceolata seed germination was 66% occurring at 17.8 °C at 242 h. Over the 288 h experiment, maximum P. lanceolata germination was 27% occurring at 17.0 °C, 187 h after initiation. Control of P. lanceolata with residual herbicides, or in combination with 2,4-dichlorophenoxyacetic acid (2,4-D) was evaluated in the interrow of C. illinoinensis groves containing Trifolium repens L., and in greenhouse experiments. Pre- and post-emergent herbicides included indaziflam, halosulfuron-methyl, and simazine applied alone, or in combination with 2,4-D in late autumn after P. lanceolata emergence in a C. illinoinensis grove. Indaziflam in combination with 2,4-D controlled P. lanceolata greater than 90% when applied in C. illinoinensis groves and greenhouse experiments. Halosulfuron-methyl and simazine applied alone, or in combination with 2,4-D, provided 67% or less P. lanceolata control in the grove experiments, and 83% or less in greenhouse experiments. Results suggested that herbicide applications should be made during the time when diurnal temperatures are between 15 and 30 °C, while abiding pre-harvest interval restrictions. Post- and pre-emergent herbicides may aid in controlling emerged weeds and reducing further weed emergence during the autumn of that year.

scholarly journals Differential response of young and adult leaves to herbicide 2,4-dichlorophenoxyacetic acid in pea plants: role of reactive oxygen species

2011 ◽  
Vol 34 (11) ◽  
pp. 1874-1889 ◽  
Author(s):  
DIANA M. PAZMIÑO ◽  
MARÍA RODRÍGUEZ-SERRANO ◽  
MARÍA C. ROMERO-PUERTAS ◽  
ANGUSTIAS ARCHILLA-RUIZ ◽  
LUIS A. DEL RÍO ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Differential Response ◽  
Dichlorophenoxyacetic Acid ◽  
Oxygen Species ◽  
2,4 Dichlorophenoxyacetic Acid

The phytoremediation potential of Plectranthus neochilus on 2,4-dichlorophenoxyacetic acid and the role of antioxidant capacity in herbicide tolerance

Chemosphere ◽  
2017 ◽  
Vol 188 ◽  
pp. 231-240 ◽  
Author(s):  
Bruna Piaia Ramborger ◽  
Claudia Alves Ortis Gularte ◽  
Daniela Teixeira Rodrigues ◽  
Mateus Cristofari Gayer ◽  
Murilo Ricardo Sigal Carriço ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Herbicide Tolerance ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid

scholarly journals Role of plant growth regulators on shoot formation from bulb sacles of Lily Sorbonne

2016 ◽  
Vol 19 (4) ◽  
pp. 105-116
Author(s):  
Thang Thanh Tran ◽  
Huong Thanh Tran
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Auxin Transport ◽  
Adventitious Shoots ◽  
Shoot Formation ◽  
Dichlorophenoxyacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Parenchymal Cells

In this study, plant growth regulators included 2,4-dichlorophenoxyacetic acid (2,4-D), picloram, 6-benzylaminopurine (BA) and thidiazuron (TDZ), at different concentrations were used individually or in combination to induce adventitious shoots from bulb scales of Lily Sorbonne. Morphological and physiological changes in shoot formation from bulb scales were analysed. The maximum number of shoots per explant were obtained on Murashige and Skoog medium (MS) supplemented with 2,4-D 1 mg/L, BA 1,5 mg/L, zeatin 0,2 mg/L and indole-3-acetic acid (IAA) 0,5 mg/L. The adventitious shoots were derived from parenchymal cells, which placed under epidermis cells. This process included the following stages: activation of cell division with large nucleus, thin-walled and without starch granules; initiating of meristematic region; formation of shoot primordium and shoot with leaves. Use of 1-naphthylphthalamic acid (1-NOA) and N-1-naphthoxyacetic acid (NPA), auxin transport inhibitors, showed the role of polar auxin transport in shoot formation. The correlation of plant hormone, respiration rate and shoot formation from bulb scales was discussed.

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