JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
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2024
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IF 1.3
Shan Zixiang,Zhou Shixing,Arafat Yasir,Shi Kai,Shao Hua
The present study analyzed the chemical composition and phytotoxic activity of Artemisia lancea essential oil (EO). Gas chromatography-mass spectrometry (GC-MS) results showed the presence of 55 compounds, representing 82.36% of the entire EO, with eucalyptol (18.7%) being the most abundant constituent. Phytotoxic bioassay results indicated that the EO (concentration ranging from 0.25-5 mg mL−1) inhibited the growth of Amaranthus retroflexus and Setaria viridis. Root length of A. retroflexus and S. viridis were reduced with the increasing concentration of the EO, especially when the EO was applied at 1-5 mg mL−1. When treated with 1-5 mg mL−1 EO, shoot length of A. retroflexus and S. viridis were also significantly suppressed. The half maximal inhibitory concentration (IC50) values for inhibiting root and shoot growth of A. retroflexus by the EO were 0.284 and 0.246 mg mL−1; for S. viridis, the EO showed IC50 values of 0.44 and 0.262 mg mL−1 for root and shoot inhibition, respectively. The most promising findings were observed when A. lancea EO concentration reached 1 mg mL−1 and higher, which completely inhibited seed germination of A. retroflexus and S. viridis. These findings suggest A. lancea EO has potential as an eco-friendly bioherbicide for agricultural weed control.
研究领域:
植物学
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农业科学
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生态学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Zilu Li,Xingyu Zhang,Yue Wang,Zirui Zheng,Chenhui Zhang,Tianyue Wu,Yanling Wu,Yuxia Gao,Fengpei Du
Glyphosate, one of the most widely used herbicides, plays an important role in controlling weeds and ensuring crop production. While using glyphosate, adjuvants are commonly added to improve its deposition on weeds and control efficacy. However, changes in weed leaf surface characteristics may reduce glyphosate penetration and contribute to evolved glyphosate resistance. Therefore, it is significant to introduce an improved method for regularizing leaf surface characterization and guide adjuvant selection to improve glyphosate efficacy. In this work, surface characteristics of typical weed leaves have been systematically investigated by 3D surface analysis and scanning electron microscopy, finally quantified by apparent surface free energy (ASFE) due to its comprehensive and quantitative evaluation of leaf surfaces. Moreover, the relationship between the weed leaf surface characteristics and the retention of glyphosate on weeds was established, further related to the control efficacy against weeds. To maximize the utilization rate of glyphosate, the types and concentrations of adjuvants should be regulated according to the ASFE of weeds. Our findings not only regularize the surface properties of weed leaves but also reveal their influencing mechanism on the deposition and biological activity of glyphosate, which provide effective guidance for the use of glyphosate.
研究领域:
植物学
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农学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Weiting Jiao,Lei Zhu,Tingting Shen,Luyao Wang,Qing X. Li,Chen Wang,Xiangwei Wu,Hongping Chen,Rimao Hua
Pyrrolizidine alkaloids (PAs) and their N -oxides (PANOs) are novel contaminants in tea. However, the source of PA/PANO contamination in tea remains unclear. In this study, 15 PAs/PANOs were extracted from plant samples (tea, fresh tea leaves, and weeds) with 0.1 M sulfuric acid and from soil with 0.1 M sulfuric acid methanol after adjusting soil acidity with 0.1 M trisodium citrate. Satisfactory recoveries of PAs/PANOs from four different matrices at 0.02, 0.1, and 0.5 mg kg −1 was 72%–114% with relative standard deviations (RSD) of 0.03%–16%. Seven out of 15 PAs/PANOs were detected in tea purchased from the local market ranging from undetected to 96.2 μg kg −1 . Thirteen, three, and four PAs/PANOs were detected in weeds, fresh tea leaves, and soil, respectively. Based on the types of PAs/PANOs detected in the three matrices, it was preliminarily speculated that PAs/PANOs in tea originated from weeds in the tea garden.
研究领域:
食品科学
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植物学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2021
·
IF 5.279
Hai-Lian Wang,Hao-Ran Li,Yi-Chi Zhang,Wen-Tao Yang,Zheng Yao,Ren-Jun Wu,Cong-Wei Niu,Yong-Hong Li,Jian-Guo Wang
In the present study, we have designed and synthesized a series of 42 novel sulfonylurea compounds with ortho-alkoxy substitutions at the phenyl ring and evaluated their herbicidal activities. Some target compounds showed excellent herbicidal activity against monocotyledon weed species. When applied at 7.5 g ha–1, 6–11 exhibited more potent herbicidal activity against barnyard grass (Echinochloa crus-galli) and crab grass (Digitaria sanguinalis) than commercial acetohydroxyacid synthase (AHAS; EC 2.2.1.6) inhibitors triasulfuron, penoxsulam, and nicosulfuron at both pre-emergence and postemergence conditions. 6–11 was safe for peanut for postemergence application at this ultralow dosage, suggesting that it could be considered a potential herbicide candidate for peanut fields. Although 6–11 and triasulfuron share similar chemical structures and have close Ki values for plant AHAS, a significant difference has been observed between their LUMO maps from DFT calculations, which might be a possible factor that leads to their different behaviors toward monocotyledon weed species.
研究领域:
植物学
·
农业科学
✓ 已验证
DOI
PubMed
高影响因子
Frontiers in Plant Science
·
2021
·
IF 5.754
Zhao Can,Xu Wenrong,Li Hewei,Dai Weimin,Zhang Zheng,Qiang Sheng,Song Xiaoling
Shorter grain-filling period and rapid endosperm development endow weedy rice (WR) with early maturity compared to cultivated rice (CR). However, the role of the cytological features and antioxidative enzyme system during grain development are largely unexplored. We selected four biotypes of WR and their associated cultivated rice (ACR) types from different latitudes to conduct a common garden experiment. The difference in the cytological features of endosperm between WR and ACR was compared by chemical staining, and the cell viability and nuclear morphometry of endosperm cells were observed by optical microscopy. Furthermore, antioxidative enzyme activity was measured during grain filling. Anatomic observation of endosperm shows that the development process of endosperm cell in WR was more rapid and earlier than that in ACR. The percentage of degraded nuclei of WR was 2–83% more than that of ACR. Endosperm cells in WR lost viability 2–6 days earlier than those in ACR. The antioxidant enzyme activity of WR was lower than that of ACR during grain filling. The ability of WR to scavenge reactive oxygen species (ROS) was weaker than that of ACR, which may contribute to the rapid cytological process in the endosperm cells of WR. The rapid cytological process and weaker ability to scavenge ROS in endosperm cells may contribute to early maturity in WR.
研究领域:
植物学
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遗传学
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作物科学
✓ 已验证
DOI
PubMed
高影响因子
Frontiers in Plant Science
·
2022
·
IF 6.627
Shen Shicai,Ma Guangzong,Xu Gaofeng,Li Diyu,Jin Guimei,Yang Shaosong,Clements David Roy,Chen Aidong,Wen Lina,Zhang Fudou,Ye Min
Sweet potato [Ipomoea batatas (L.) Lam] is grown as important cash and food crop worldwide and has been shown to exhibit allelopathic effects on other plants. However, its metabolome has not been studied extensively, particularly with respect to the production of phytotoxic bioactive secondary products. In this study, the chemical composition of petroleum ether extract of sweet potato was characterized, and the morphological and physiological effects of some individual components against four invasive alien weeds Bidens pilosa L., Galinsoga parviflora Cav., Lolium multiflorum Lam., and Phalaris minor Retz. were determined. Twenty-one components were identified by GS-MS, constituting 96.08% of petroleum ether extract in sweet potato. The major components were palmitic acid (PA) (17.48%), ethyl linoleate (EL) (13.19%), linoleic acid (LA) (12.55%), ethyl palmitate (EP) (11.77%), ethyl linolenate (ELL) (8.29%) oleic acid (5.82%), ethyl stearate (4.19%), and 3-methylphenol acetate (3.19%). The five most abundant compounds exhibited strong inhibition activity against the four invasive weeds tested. The highest inhibition rates were seen for LA, followed by PA and EP, respectively. Catalase (CAT), malondialdehyde (MDA), and peroxidase (POD) content of L. multiflorum were increased by the three allelochemicals, i.e., LA, PA and EP, but superoxide dismutase (SOD), chlorophyll-a and chlorophyll-b levels declined. Overall, the combined impact of all five compounds could be quite effective in suppressing the invasive weeds of concern.
研究领域:
植物学
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生态学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhentao Bian,Meng Li,Taoqin Liu,Chengcheng Liu,Yanyan Zhu,Hongxia Cao,Guang Zhu,Hongyan Wang,Chong Chen,Keying Zhang
Recent research interest has increased in the production of heteroatoms-doped porous carbon with controlled morphology from biomass. However, there is still a significant challenge in resolving alkaline solutions that cause equipment corrosion and devising a simple and adaptable approach. In this study, N/O/S co-doped honeycomb-like porous carbons were synthesized from a widely cultivated annual weed ( Hemistepta Iyrata Bunge ) using a simple and eco-friendly method. The sodium hydroxide (NaOH)/urea system was utilized as the pore-forming agent and cellulose solvent, with urea as the nitrogen source. By varying the activation temperature, the as-prepared porous carbon has a high specific surface area (709 m 2 g −1 ), a large total pore volume (0.44 cm 3 g −1 ), and a high heteroatom content of 6.20 at% nitrogen and 8.12 at% oxygen. The prepared porous materials were evaluated as electrodes for supercapacitors . The product (HIB-PHC-750 °C) exhibited a high specific capacitance (353.6 F g −1 at 0.2 A g −1 ) at a carbonization temperature of 750 °C. Additionally, the HIB-PHC-750 °C-based symmetric device with a wide voltage range of 2.0 V possessed a desirable energy density of 44.22 Wh kg −1 at 500 W kg −1 . Moreover, the HIB-PHC-750 °C also demonstrated outstanding cycling stability with 98.2 % capacitance retention after 10,000 cycles. This research provided a facile and favorable alternative method for preparing N/O/S co-doped honeycomb-like porous carbon for electrochemical energy storage devices.
研究领域:
材料科学
·
能源存储
·
生物质利用
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Song Cheng,Baolin Xing,Changliang Shi,Yanhe Nie,Hongying Xia
A low-cost and selective adsorbent (referred to as CC-CCW@DM) is prepared by modifying crofton weed using 1,3-diaminoguanidine monohydrochloride to achieve Pb(II) removal. Fourier transform infrared spectroscopy analysis results indicate that 1,3-diaminoguanidine monohydrochloride is successfully grafted in the crofton weed after modification. The Pb(II) adsorption process is investigated by adsorption isotherm/kinetic models and adsorption thermodynamics. The adsorption kinetic data are well fitted by the pseudo-second-order model. The adsorption equilibrium data can be better described by the Hill and Redlich-Peterson isotherm models. The maximum Pb(II) adsorption is 234.60 mg/g at a pH of 5 based on the Hill isotherm model. An adsorption thermodynamic study shows that the Pb(II) adsorption process is spontaneous, with △G 0 values ranging from −25.85 to −32.52 kJ/mol at 298–318 K. CC-CCW@DM has good selectivity for Pb(II) adsorption in wastewater. Recycling experiments show that Pb(II) removal is 93.14% after three cycles. In addition, the adsorption mechanism is systematically studied. The density functional theory calculation results show that there are three ways to combine Pb(II) with N on CC-CCW@DM. In summary, CC-CCW@DM is a selective and reusable adsorbent with a high adsorption capability.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shan-Shan Li,Song-Bo Wang,Yu Chen,Qi-Shun Zhu,Ling-Min Lan,Huaitian Bu,Tian Hu,Gang-Biao Jiang
Hydrogel is widely used in agriculture as water retention agent and fertilizer delivery vehicle due to its highly porous and hydrated structure. Hydrogel loses water gradually and becomes fragile, which greatly hinders its potential application as mulching film for weed control as the weeds can penetrate the weakened hydrogel film easily. Here, we report a self-healable and biodegradable hydrogel (COCu-K) mulching film composed of chitosan derivatives, copper-doped carbon dots (Cu-CDs) and KCl for weed inhibition. The dehydrated COCu-K hydrogel fragments spread on top of soil self-heal in-situ into an integrate hydrogel film by simple watering, preventing the germination and growth of weeds. SEM reveals the well-dispersed multi-hierarchical structure on the surface of COCu-K hydrogel. The effects of dosages of KCl and Cu-CDs on the hydrogel structure and consequent performances of hydrogel mulching film including self-healing, anti-freezing, weeds inhibition have been explored. The pot experiments illustrated a weed seeds inhibition ratio of 90% and strengthened growth of pepper seedlings induced by the best practice hydrogel COCu 0.08 -K 2.5 . Meanwhile, the COCu 0.08 -K 2.5 hydrogel shows an outstanding degradability with a degradation rate of 63.61±3.26% within eight weeks, and soil containing degraded COCu 0.08 -K 2.5 hydrogel presents no phytotoxicity. This study provides a facile and viable strategy to design and utilize hydrogel mulching for weed control.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Hai-bo Wu,Lin-hui Ma,Xi-meng Li,Ting-ting Liu
The objective of this study is to find new selective allelochemicals for managing two problematic weeds redroot pigweed (Amaranthus retroflexus) and common lambsquarters (Chenopodium album) with minimal negative effects on wheat, thereby facilitating the development of eco-friendly botanical herbicide. Three new sesquiterpenoids, sonarvenolide A–C (1–3), and nine known sesquiterpenoids (4–12) were isolated from Sonchus arvensis. Compound 1 was a rare peroxide-substituted eudesmane-type sesquiterpenoid, and compound 3 was a rare iphionane-type sesquiterpenoid. Notably, compounds 1, 3, 4, 6–8, and 11 showed selectivity phytotoxic activity. In particular, compounds 1, 3, and 4 exhibited excellent germination inhibitory effect on A. retroflexus (IC50 = 32.0–129.0 μM), higher than that of the positive control triasulfuron (IC50 = 141.7 μM), and compound 4 showed excellent inhibition on C. album (IC50 = 82.0 μM), higher than that of triasulfuron (IC50 = 100.9 μM). In addition, compounds 1, 3, and 4 showed allelopathy to the growth of two weeds, which were more potent than or close to that of triasulfuron. Furthermore, these compounds were not toxic to wheat even at a high concentration (1000 μM). Structure–activity relationships (SARs) revealed that the presence of peroxides or the absence of hydroxyl at C-5 in the eudesmane-type sesquiterpenoids could strengthen the inhibitory activities. The discovery of selective allelochemicals provides not only a new choice to control two problematic weeds of wheat but also new natural lead compounds for herbicides.
研究领域:
植物学
·
农业科学
·
生态学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Hong Chen,Jinxin Li,Xinglei Chen,Likun Mei,Shumin Feng,Pengfei Duan,Huixia Cai,Kaili Qu,Jingyi Zhang,Yuhuan Miao,Dahui Liu
Nanotechnology contributes to the development of biopesticides with reduced toxicity, increased stability, improved biosafety, and higher activity against targets. It has demonstrated great potential as a solution for practical applications of essential oils. Herein, the HLB method developed two Artemisia argyi essential oil-loaded nanoemulsions (AEOnano). Further systematically optimizing the ratio led to small droplet size (<200 nm) and low PDI (<0.3). As anticipated, the AEOnano demonstrated robust physical stability when subjected to various stressors. Notably, both indoor and outdoor pot experiments demonstrated that AEOnano outperformed ordinary A. argyi essential oil aqueous emulsions (AEOAE) in weed control. These nanoemulsions allowed a 2–4 times reduction in AEO dosage while maintaining the same weed-killing efficacy. The superior improvement attributed to the nanoemulsions enhanced leaf-wetting capability, improved leaf retention, and resistance to wash-off. In addition, biosafety assessment indicated that AEOnano did not affect the plants ( Artemisia argyi , Chrysanthemum morifolium , cotton), which provide orientation for its practical application. Therefore, this study introduces a promising approach to enhance the effectiveness of AEO-based herbicides, which will have a broad application prospect in sustainable agriculture.
研究领域:
纳米技术
·
农学
·
植物化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2018
·
IF 3.412
Ke-Jian Li,Ren-Yu Qu,Yu-Chao Liu,Jing-Fang Yang,Ponnam Devendar,Qiong Chen,Cong-Wei Niu,Zhen Xi,Guang-Fu Yang
The issue of weed resistance to acetohydroxyacid synthase (EC 2.2.1.6, AHAS) inhibitors has become one of the largest obstacles for the application of this class of herbicides. In a continuing effort to discover novel AHAS inhibitors to overcome weed resistance, a series of pyrimidine–biphenyl hybrids (4aa–bb and 5aa–ah) were designed and synthesized via a scaffold hopping strategy. Among these derivatives, compounds 4aa (Ki = 0.09 μM) and 4bb (Ki = 0.02 μM) displayed higher inhibitory activities against Arabidopsis thaliana AHAS than those of the controls bispyribac (Ki = 0.54 μM) and flumetsulam (Ki = 0.38 μM). Remarkably, compounds 4aa, 4bb, 5ah, and 5ag exhibited excellent postemergence herbicidal activity and a broad spectrum of weed control at application rates of 37.5–150 g of active ingredient (ai)/ha. Furthermore, 4aa and 4bb showed higher herbicidal activity against AHAS inhibitor-resistant Descurainia sophia, Ammannia arenaria, and the corresponding sensitive weeds than that of bispyribac at 0.94–0.235 g ai/ha. Therefore, the pyrimidine–biphenyl motif and lead compounds 4aa and 4bb have great potential for the discovery of novel AHAS inhibitors to combat AHAS-inhibiting herbicide-resistant weeds.
研究领域:
植物学
·
农学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）