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1. Controlling the size of spherulite and the degradation of poly(butylene succinate-co-adipate) by solvent and gel preparation temperature

Author:
Yamazaki, Hana; Kamitabira, Saya; Maeda, Tomoki; Hotta, Atsushi
Source:
Polymer degradation and stability 2019 v.162 pp. 106-111
ISSN:
0141-3910
Subject:
DCB (herbicide),   etc   ; cyclohexanones; gels; solvents; temperature; toluene;     Show all 6 Subjects
Abstract:
... The size of spherulites observed in the poly(butylene succinate-co-adipate) (PBSA) gel was found to be effectively controlled by the careful selection of the types of solvent and the gel preparation temperature. Additionally, the degradation behavior of the PBSA dried-gels with different sizes of spherulites was studied. By using different solvents, such as toluene (TOL), o-dichlorobenzene (o-DCB) ...
DOI:
10.1016/j.polymdegradstab.2019.02.014

2. A herbicide resistance risk matrix

Author:
Moss, Stephen; Ulber, Lena; Hoed, Ingrid den
Source:
Crop protection 2019 v.115 pp. 13-19
ISSN:
0261-2194
Subject:
herbicide resistance; herbicides,   etc   ; mechanism of action; risk assessment; risk reduction; weed control; Europe;     Show all 7 Subjects
Abstract:
... Herbicide resistance is of increasing concern, especially as there is a lack of new modes of action. An assessment of resistance risk has been a key part of the pesticide authorisation process in most European countries since the early 2000's. However, little guidance is provided on how to quantify these risks. The risk matrix described here presents a quantitative approach to the evaluation of th ...
DOI:
10.1016/j.cropro.2018.09.005

3. Laboratory Tests on Longitudinal Distribution by Using Pulse Width Modulation

Author:
von Hörsten, Dieter; Pohl, Jan-Philip; Wegener, Jens Karl
Source:
Gesunde Pflanzen 2019 v.71 no.Supplement 1 pp. 3-8
ISSN:
0367-4223
Subject:
herbicides,   etc   ; droplet size; field experimentation; laboratory experimentation; nozzles; sprayers; weeds;     Show all 7 Subjects
Abstract:
... Pulse width modulation is a system to adjust the flow rate of field sprayers by pulsing an electronically-actuated solenoid valve with a frequency of 10 to 20 Hz. In comparison to a pressure controlled flow rate pulse width modulated nozzles create a constant droplet size spectrum as well as a uniform spray pattern. However, from the theoretical point of view it is expected that pulsing impacts th ...
DOI:
10.1007/s10343-019-00448-8

4. Iron-Catalyzed Intramolecular C–H Amination of α-Azidyl Amides

Author:
Zhao, Xiaopeng; Liang, Siyu; Fan, Xing; Yang, Tonghao; Yu, Wei
Source:
Organic letters 2019 v.21 no.6 pp. 1559-1563
ISSN:
1523-7052
Subject:
imidazolinone herbicides,   etc   ; amides; amination; azides; chemical structure; ferrous chloride; ligands;     Show all 7 Subjects
Abstract:
... Iron-catalyzed intramolecular C–H amination of aliphatic azides has recently emerged as a powerful tool for the preparation of nitrogen heterocycles. This paper reports that α-azidyl amides can be converted in high efficacy to imidazolinone compounds via intramolecular C(sp³)–H amination by the action of a simple catalytic system composed of FeCl₂ and a β-diketiminate ligand. The reactions provide ...
DOI:
10.1021/acs.orglett.8b03927

5. Neighbourhood Effects in Pesticide Use: Evidence from the Rural Philippines

Author:
Aida, Takeshi
Source:
Journal of agricultural economics 2018 v.69 no.1 pp. 163-181
ISSN:
0021-857X
Subject:
herbicides,   etc   ; econometric models; farmers; Philippines;     Show all 4 Subjects
Abstract:
... This study investigates how pesticide use by neighbouring farmers affects a given farmer's pesticide use. Although it is common knowledge that pesticide use has spatial externalities, few empirical economic studies explicitly analyse this issue. Applying a spatial panel econometric model to plot‐level panel data for Bohol, Philippines, this study shows that pesticide use, especially for herbicides ...
DOI:
10.1111/1477-9552.12230

6. Isolation and expression of acetolactate synthase genes that have a rare mutation in shepherd's purse (Capsella bursa-pastoris (L.) Medik.)

Author:
Wang, Hengzhi; Zhang, Lele; Li, Wei; Bai, Shuang; Zhang, Xiaolin; Wu, Cuixia; Liu, Weitang; Wang, Jinxin
Source:
Pesticide biochemistry and physiology 2019 v.155 pp. 119-125
ISSN:
0048-3575
Subject:
herbicide resistance; herbicide-resistant weeds; herbicides,   etc   ; Capsella bursa-pastoris; acetolactate synthase; bioassays; biotypes; crop production; gene expression; genes; heterozygosity; mutation; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; tetraploidy;     Show all 15 Subjects
Abstract:
... Acetolactate synthase (ALS) inhibitor-resistant biotypes are the fastest growing class of herbicide-resistant weeds. Shepherd's purse (Capsella bursa-pastoris (L.) Medik.), a tetraploid species and one of the most troublesome weeds in wheat production, has evolved ALS inhibitor resistance. To confirm and characterize the resistance of shepherd's purse populations to ALS-inhibiting herbicides, whol ...
DOI:
10.1016/j.pestbp.2019.01.013

7. Ranunculus acris control in dairy pasture – a comparison of herbicides, plant growth promoters, a bioherbicide and pregraze mowing

Author:
Bourdôt, Graeme W.; Lamoureaux, Shona L.; Jackman, Sarah D.; Noble, Alasdair D. L.; Chapman, David F.
Source:
New Zealand journal of agricultural research 2019 v.62 no.2 pp. 184-199
ISSN:
1175-8775
Subject:
MCPA (herbicide); MCPB (herbicide),   etc   ; Ranunculus acris; Sclerotinia sclerotiorum; biopesticides; drainage; flumetsulam; genetic variation; gibberellic acid; grasses; growth promotion; mowing; pastures; soil; thifensulfuron methyl; weeds;     Show all 16 Subjects
Abstract:
... The efficacy of control tactics for Ranunculus acris was quantified on poorly- and well-drained soils in a factorial experiment conducted over three years in 18 dairy pastures. Soil drainage, gibberellic acid and nitrogenous fertiliser (growth promoters), and a bioherbicide utilising Sclerotinia sclerotiorum had no effect on the cover of R. acris. The herbicides aminopyralid and aminopyralid+tricl ...
DOI:
10.1080/00288233.2018.1470991

8. Resistance determination of the ACCase-inhibiting herbicide of clodinafop propargyl in Avena ludoviciana (Durieu), and study of their interaction using molecular docking and simulation

Author:
Akbarabadi, Ali; Ismaili, Ahmad; Kahrizi, Danial; Nazarian Firouzabadi, Farhad
Source:
Molecular biology reports 2019 v.46 no.1 pp. 415-424
ISSN:
0301-4851
Subject:
herbicide resistance; herbicides,   etc   ; Avena sterilis; active sites; binding sites; bioinformatics; biotypes; computer simulation; crystallography; enzyme inhibitors; enzymes; greenhouses; mutation; nucleotide sequences; oats; polymerase chain reaction; simulation models; weeds;     Show all 18 Subjects
Abstract:
... Structural mutations providing herbicide resistance may cause a modification of the three dimensional structure of a protein which will lead to a decrease in the herbicide efficacy. Wild oat (Avena ludoviciana Durieu.) is an increasingly disruptive weed in areas of intensive cereal production, thus the aim of this research was to identify mutations conferring resistance to ACCase-inhibitor herbici ...
DOI:
10.1007/s11033-018-4489-9

9. Plant somatic mutations in nature conferring insect and herbicide resistance

Author:
Simberloff, Daniel; Leppanen, Christy
Source:
Pest management science 2019 v.75 no.1 pp. 14-17
ISSN:
1526-498X
Subject:
herbicide resistance; herbicides,   etc   ; Hydrilla verticillata; branches; gametophytes; gene editing; genome; horticulture; insect resistance; invasive species; meristems; pathogens; phytophagous insects; plant growth; reproduction; silviculture; somatic mutation; trees;     Show all 18 Subjects
Abstract:
... Because of the role of the meristem in plant growth and reproduction, somatic mutations in plants have long been suspected of conferring herbivore and pathogen resistance on individual plants and, in the case of trees, individual branches within single plants. A few instances of resistance to phytophagous insects owing to somatic mutations have been reported in the literature. More recently, a str ...
DOI:
10.1002/ps.5157

10. A quarter of a century of monitoring herbicide resistance in Lolium rigidum in Australia

Author:
Broster, J. C.; Pratley, J. E.; Ip, R. H. L.; Ang, L.; Seng, K. P.
Source:
Crop & pasture science 2019 v.70 no.3 pp. 283-293
ISSN:
1836-0947
Subject:
herbicide resistance; herbicides,   etc   ; Lolium rigidum; acetolactate synthase; acetyl-CoA carboxylase; data collection; monitoring; photosystem II; surveys; topographic slope; New South Wales;     Show all 11 Subjects
Abstract:
... Charles Sturt University has operated a commercial herbicide resistance testing service since 1991, following a random survey of the South West Slopes region of New South Wales that identified significant incidence of herbicide resistance in annual ryegrass (Lolium rigidum Gaud.). Other surveys of cropping regions of southern Australia conducted at that time also found a significant incidence of r ...
DOI:
10.1071/CP18584

11. Applications of multiplex genome editing in higher plants

Author:
Armario Najera, Victoria; Twyman, Richard M; Christou, Paul; Zhu, Changfu
Source:
Current opinion in biotechnology 2019 v.59 pp. 93-102
ISSN:
0958-1669
Subject:
herbicide resistance,   etc   ; biosynthesis; gene editing; metabolic engineering; molecular farming; mutants; nucleases; plant development;     Show all 8 Subjects
Abstract:
... Multiplex genome editing involves the simultaneous targeting of multiple related or unrelated targets. The latter is most straightforward using the CRISPR/Cas9 system because multiple gRNAs can be delivered either as independent expression cassettes with their own promoters or as polycistronic transcripts processed into mature gRNAs by endogenous or introduced nucleases. Multiplex genome editing i ...
DOI:
10.1016/j.copbio.2019.02.015

12. Use of Pistia stratiotes for phytoremediation of water resources contaminated by clomazone

Author:
Escoto, Dandara Fidélis; Gayer, Mateus Cristofary; Bianchini, Matheus Chimelo; da Cruz Pereira, Geovana; Roehrs, Rafael; Denardin, Elton L.G.
Source:
Chemosphere 2019 v.227 pp. 299-304
ISSN:
0045-6535
Subject:
herbicide residues,   etc   ; Pistia stratiotes; clomazone; half life; high performance liquid chromatography; phytoremediation; water resources;     Show all 7 Subjects
Abstract:
... The Pistia stratiotes L. was tested for phytoremediation potential of the compound clomazone in water. Clomazone is a post-emergent herbicide marketed as Gamit®. Five groups with four samples each were evaluated, a low concentration control (LCC: 37.86 mg L−1), low concentration treatment (LCT: 38.16 mg L−1), high concentration control (HCC: 54.71 mg L−1), high concentration treatment (HCT: 54.33  ...
DOI:
10.1016/j.chemosphere.2019.04.013

13. Development of dispersive solid-phase extraction with polyphenylene conjugated microporous polymers for sensitive determination of phenoxycarboxylic acids in environmental water samples

Author:
Ma, Jin-Qing; Liu, Lu; Wang, Xia; Chen, Li-Zong; Lin, Jin-Ming; Zhao, Ru-Song
Source:
Journal of hazardous materials 2019 v.371 pp. 433-439
ISSN:
0304-3894
Subject:
herbicides,   etc   ; adsorbents; carboxylic acids; detection limit; monitoring; polymers; porous media; solid phase extraction; surface area;     Show all 9 Subjects
Abstract:
... High-performance capturing polar phenoxycarboxylic acids herbicides (PCAs) from water samples remains a great challenge because PCAs form salt easily and dissolve. Polyphenylene-based conjugated microporous polymers (PP-CMPs), a fascinating type of polymers, bear π-conjugation over 3D polyphenylene scaffolds, inherent micropore, and large surface area, which are essential for capturing trace PCAs ...
DOI:
10.1016/j.jhazmat.2019.03.033

14. Diversity and extent of mutations endowing resistance to the acetolactate synthase (AHAS)-inhibiting herbicides in Indian hedge mustard (Sisymbrium orientale) populations in Australia

Author:
Long, Weihua; Malone, Jenna; Boutsalis, Peter; Preston, Christopher
Source:
Pesticide biochemistry and physiology 2019 v.157 pp. 53-59
ISSN:
0048-3575
Subject:
herbicides,   etc   ; Sisymbrium officinale; Sisymbrium orientale; acetolactate synthase; amino acids; broadleaf weeds; germination; mutation; sequence analysis; Australia;     Show all 10 Subjects
Abstract:
... Indian hedge mustard (Sisymbrium orientale) (IHM) is an important broadleaf weed across southern Australia. Resistance to sulfonylurea (SU) herbicides that inhibit acetohydroxyacid synthase (AHAS) is extensive in Australia, but resistance to imidazolinone (IMI) herbicides has only been reported recently. The AHAS-mutation profile of 65 IHM populations collected randomly from cropped fields was inv ...
DOI:
10.1016/j.pestbp.2019.03.004

15. Overexpression of the nitroreductase NfsB in an E. coli strain as a whole-cell biocatalyst for the production of chlorinated analogues of the natural herbicide DIBOA

Author:
de la Calle, Maria Elena; Cabrera, Gema; Cantero, Domingo; Valle, Antonio; Bolivar, Jorge
Source:
New biotechnology 2019 v.50 pp. 9-19
ISSN:
1871-6784
Subject:
herbicides,   etc   ; Escherichia coli; acids; antibacterial properties; biocatalysis; biocatalysts; biotransformation; enzymes; heat production; hydrogen; plant products;     Show all 11 Subjects
Abstract:
... Benzohydroxamic acids, such as DIBOA (2,4-dihydroxy-2 H)-1,4-benzoxazin-3(4 H)-one), are plant products that exhibit interesting herbicidal, fungicidal and bactericidal properties. A feasible alternative to their purification from natural sources is the synthesis of analogous compounds such as D-DIBOA (2-deoxy-DIBOA) and their chlorinated derivatives. Their chemical synthesis has been simplified i ...
DOI:
10.1016/j.nbt.2019.01.002

16. An efficient fluorescence resonance energy transfer system from quantum dots to graphene oxide nano sheets: Application in a photoluminescence aptasensing probe for the sensitive detection of diazinon

Author:
Arvand, Majid; Mirroshandel, Aazam A.
Source:
Food chemistry 2019 v.280 pp. 115-122
ISSN:
0308-8146
Subject:
herbicides,   etc   ; aptasensors; binding capacity; cysteine; diazinon; energy transfer; fluorescence; graphene oxide; monitoring; oligonucleotides; photoluminescence; quantum dots;     Show all 12 Subjects
Abstract:
... In this paper a new aptasensor with high-sensitivity, and high-specificity for detection of diazinon, was discovered, based on fluorescence resonance energy transfer (FRET) between quantum dot (QD) as a donor and graphene oxide (GO) as an acceptor. l-cysteine capped CdS QDs/DF20 aptamer bioconjugates were successfully synthesized. GO was also attached to aptamers and photoluminescence quenching wa ...
DOI:
10.1016/j.foodchem.2018.12.069

17. Widespread occurrence of glyphosate in urine from pet dogs and cats in New York State, USA

Author:
Karthikraj, Rajendiran; Kannan, Kurunthachalam
Source:
The Science of the total environment 2019 v.659 pp. 790-795
ISSN:
0048-9697
Subject:
herbicide residues,   etc   ; acceptable daily intake; cats; dogs; glyphosate; ingestion; pets; risk; urine; New York;     Show all 10 Subjects
Abstract:
... Glyphosate is one of the most widely used herbicides in the United States, which has led to its ubiquitous occurrence in food and water and regular detection in human urine at concentrations of 1–10 μg/L. Data pertaining to health risks arising from the ingestion of glyphosate are limited and are the subject of much debate, which demands the need for more exposure information for this herbicide. V ...
DOI:
10.1016/j.scitotenv.2018.12.454

18. Grass-Shrub Competition in Arid Lands: An Overlooked Driver in Grassland–Shrubland State Transition?

Author:
Pierce, Nathan A.; Archer, Steven R.; Bestelmeyer, Brandon T.; James, Darren K.
Source:
Ecosystems 2019 v.22 no.3 pp. 619-628
ISSN:
1432-9840
Subject:
herbicides,   etc   ; Bouteloua eriopoda; Prosopis glandulosa; arid lands; asexual reproduction; biocenosis; grasses; grasslands; models; rain; shrublands; shrubs;     Show all 12 Subjects
Abstract:
... Traditional models of state transition in arid lands emphasize changes in disturbance regimes and abiotic feedbacks that promote the degradation of grassland into shrubland, whereas biotic interactions like competition and facilitation are often overlooked. Here, we conducted an experiment to determine whether shrubs have a positive, neutral, or negative effect on grasses and if these interactions ...
DOI:
10.1007/s10021-018-0290-9

19. Characterization of a novel enantioselective aryloxyphenoxypropionate herbicide-hydrolyzing carboxylesterase from Brevundimonas sp. QPT-2

Author:
Xu, Xinyun; Wang, Jiahao; Yu, Ting; Nian, Haohan; Zhang, Hui; Wang, Guangli; Li, Fang
Source:
Process biochemistry 2019
ISSN:
1359-5113
Subject:
herbicides,   etc   ; Brevundimonas; Escherichia coli; bioremediation; carboxylesterase; cleavage (chemistry); enantioselectivity; genes; grasses; hydrolysis; perennials;     Show all 11 Subjects
Abstract:
... Aryloxyphenoxypropionate (AOPP) herbicides with chiral center are widely used to selectively remove annual and perennial grasses. However, the study of the enzymes involved in enantioselective degradation of AOPP herbicides is limited. A novel family VIII carboxylesterase gene estwx, hydrolyzed the ester bond cleavage of AOPP herbicides to form the corresponding acid and alkyl side chain alcohol, ...
DOI:
10.1016/j.procbio.2019.03.013

20. A rapid throughput assay for screening (R)-2-(4-hydroxyphenoxy)propionic acid producing microbes

Author:
Hu, Hai-Feng; Zhou, Hai-Yan; Wang, Mei-Xin; Wang, Yuan-Shan; Xue, Ya-Ping; Zheng, Yu-Guo
Source:
Journal of microbiological methods 2019 v.158 pp. 44-51
ISSN:
0167-7012
Subject:
aryloxyphenoxypropionic acid herbicides,   etc   ; antipyrine; culture media; fungi; high performance liquid chromatography; hydroxylation; propionic acid; regioselectivity; screening;     Show all 9 Subjects
Abstract:
... (R)-2-(4-hydroxyphenoxy)propionic acid ((R)-HPOPA) is an important intermediate for the synthesis of optically pure aryloxyphenoxypropionic acid herbicides. Regioselective hydroxylation of (R)-2-phenoxypropionic acid ((R)-POPA) by microbes is one of the most useful methods for the industrial production of (R)-HPOPA. In this study, we designed and optimized a rapid throughput assay for screening (R ...
DOI:
10.1016/j.mimet.2019.01.015