Subcellular distribution governing accumulation and translocation of pesticides in wheat (Triticum aestivum L.)

Ju, Chao; Dong, Suxia; Zhang, Hongchao; Yao, Shijie; Wang, Feiyan; Cao, Duantao; Xu, Shiji; Fang, Hua; Yu, Yunlong

doi:10.1016/j.chemosphere.2020.126024

Cited by 49 publications

(28 citation statements)

References 35 publications

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“…In lettuce with a low concentration of PAE (phthalic acid ester) and a low concentration of PFOA (Per uoro octanoic acid), root cell walls and organelles were the dominant storage compartmentsfor PAEs and PFOA, resulting in less translocation to buds. Ju et al (2020) found that the transportation of pesticide from root to stem and stem to leaf was adversely affected by subcellular fraction concentration factor (SFCF) of cell walls and organelles.…”

Section: Subcellular Distribution Of Pesticides In Rice Tissuesmentioning

confidence: 99%

Uptake, translocation, and subcellular distribution of three triazole pesticides in rice

Wang

et al. 2021

Environ Sci Pollut Res

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Triazole pesticide is a widely-used pesticide for the control of pathogenic fungi in crops and its extensive use has caused food safety issues due to its uptake byedible crops. The residue of triazole pesticides has caused many toxicity risks and food safety problems. In this study, the uptake, translocation, and subcellular distribution of three triazole pesticides (triadimefon, tebuconazole, and epoxiconazole) in rice were investigated. The results showed that the three selected triazole pesticides could be taken up by rice roots, but their distribution in plant tissues was different. The accumulation of the three pesticides in rice root followed the order of epoxiconazole > tebuconazole > triadimefon, while a reversed order was observed in rice shoots. The movement of triazole pesticides within rice tissues involved both symplast and apoplast pathways, with triadimefon preferentially through the symplast pathway and epoxiconazole throughby the symplast pathway. The subcellular distribution reveals that all pesticides have a higher proportion in cell walls than in cell organelles and soluble components. Epoxiconazole has the highest accumulated capacity in the cell wall (45%-67%) and triadimefon was more concentrated in the soluble components (24%-29%). However, there exists no signi cant difference in the amount of three pesticides in cell organelles. The pesticide uptake, the movement of pesticides in symplast and apoplast, and the subcellular distribution of the three pesticides are related to the hydrophobicity of the three pesticides.

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Section: Subcellular Distribution Of Pesticides In Rice Tissuesmentioning

confidence: 99%

Uptake, translocation, and subcellular distribution of three triazole pesticides in rice

Wang

et al. 2021

Environ Sci Pollut Res

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“…(E)-4-(2,4-Dichlorophenyl)-1,1,1-trifluoro-2-methylbut-3-en-2-ol (6). White viscous liquid; yield, 70%; 1 (11). White viscous liquid; yield, 69%; 1 H NMR (400 MHz, chloroform-d), δ 7.52 (s, 1H), 7.49 (d, J = 8.7 Hz, 2H), 7.39 (d, J = 2.1 Hz, 1H), 7.25 (t, J = 7.7 Hz, 3H), 7.22 (d, J = 2.6 Hz, 2H), 6.66 (d, J = 16.0 Hz, 1H), 2.82 (s, 1H), 2.37 (s, 3H); 13 C NMR (100 MHz, chloroform-d), δ 137.9, 133.6, 133.2, 133.1, 131.6, 128.8, 128.6, 128.2, 127.5, 126.9, 126.3, 125.5 (d, J = 1.8 Hz), 123.9 (q, J = 284.0 Hz), 76.2 (q, J = 29 Hz), 20.1; HRMS (ESI) m/z calculated for C 17 H 14 OCl 2 F 3 [M + H] + , 361.0374; found, 361.0377.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…Among them, the systemic translocation of the fungicide determines whether the fungicide can be quickly absorbed by plants and translocated to various tissues. 10,11 Therefore, absorption and translocation capacities are crucial factors for the antifungal effects of fungicides in vivo. 12−14 At present, there are a few fungicides with bidirectional translocation in plants, such as aluminum triethyl phosphate, penflufen, and fenfuram.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Plant pathogens infect crops and grains, which seriously threaten their yield. − The application of fungicides effectively controls the occurrence and prevalence of plant pathogens. , According to European Union (EU) statistics, the sales of synthetic fungicides account for more than 40% of the total sales of all pesticides and organic fungicides account for 60% of all fungicides. , However, the pesticide resistance and environmental problems caused by the abuse of pesticides are pushing researchers to develop new agrochemicals with novel structures and modes of action. , Excellent types of fungicides must have high antifungal activity, good systemic properties, and low drug resistance. Among them, the systemic translocation of the fungicide determines whether the fungicide can be quickly absorbed by plants and translocated to various tissues. , Therefore, absorption and translocation capacities are crucial factors for the antifungal effects of fungicides in vivo . − At present, there are a few fungicides with bidirectional translocation in plants, such as aluminum triethyl phosphate, penflufen, and fenfuram…”

Section: Introductionmentioning

confidence: 99%

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Photostable 1-Trifluoromethyl Cinnamyl Alcohol Derivatives Designed as Potential Fungicides and Bactericides

Zhang

Dou

Xia³

et al. 2021

J. Agric. Food Chem.

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In the current work, a series of 1-trifluoromethyl cinnamyl alcohol derivatives were designed and synthesized and their antifungal activities were evaluated. The bioassay result showed that most compounds exhibited excellent antifungal activity in vitro at 10 μg mL–1. Next, photostable and easily synthesized compound 2 with broad-spectrum antifungal activity in vitro was selected as a potential candidate to evaluate its antibacterial and antifungal activities. The EC50 values of compound 2 against eight fungal plant pathogens in vitro ranged from 3.806 to 17.981 μg mL–1; at the same time, compound 2 could effectively control Podosphaera xanthii, Odium heveae Steinm, Puccinia striiformis West, and Puccinia sorghi in pot experiments. In addition, compound 2 exhibited excellent antibacterial activities in vitro and in vivo against Xanthomonas oryzae pv. oryzae. Furthermore, the absorption and translocation of compound 2 in wheat plants were determined by the high-performance liquid chromatography method. The result showed that compound 2 could be translocated acropetally as well as basipetally in wheat plants. Finally, it was found that compound 2 had no cross-resistance with carbendazim, azoxystrobin, and boscalid.

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“…Considering the lipid peroxidation of imidacloprid to nontarget aquatic organisms and genotoxicity to rats , as well as the lipid peroxidation and neurotoxicity of propiconazole to the brains of fish, the uptake mechanism of imidacloprid and propiconazole by crop roots needs to be examined. However, the existing literature on the uptake of imidacloprid and propiconazole only presents their uptake and distribution characteristics, but not their uptake mechanism and influencing factors. − …”

Section: Introductionmentioning

confidence: 99%

Root Uptake of Imidacloprid and Propiconazole Is Affected by Root Composition and Soil Characteristics

et al. 2020

J. Agric. Food Chem.

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Residual pesticides in soil may be taken up by crops and negatively affect food safety. The uptake mechanism of imidacloprid and propiconazole was studied using wheat roots. The factors affecting root uptake were also studied with different crops and in different soils. Imidacloprid and propiconazole were taken up by wheat roots mainly through the symplastic and apoplastic pathways, respectively. Root protein and lipid contents were the main factors affecting the uptake and accumulation of imidacloprid and propiconazole by different crop roots, respectively. The uptake of imidacloprid and propiconazole in soil by wheat plants was linearly correlated with their concentrations in soil pore water, which were governed by soil characteristics. These results are helpful for understanding and estimating crop uptake of residual pesticides in soils.

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Subcellular distribution governing accumulation and translocation of pesticides in wheat (Triticum aestivum L.)

Cited by 49 publications

References 35 publications

Uptake, translocation, and subcellular distribution of three triazole pesticides in rice

Uptake, translocation, and subcellular distribution of three triazole pesticides in rice

Photostable 1-Trifluoromethyl Cinnamyl Alcohol Derivatives Designed as Potential Fungicides and Bactericides

Root Uptake of Imidacloprid and Propiconazole Is Affected by Root Composition and Soil Characteristics

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