HORTTECHNOLOGY
·
2020
·Vol. 30
·期 5
·536-543
·
IF 0.668
Mengzi Zhang,Jie Yang,Huitang Pan,Brian J. Pearson
Baby primrose (Primula forbesii) is a newly cultivated and valuable ornamental plant with great market potential for both indoor and landscape use. As a container plant, baby primrose has long, weak flower stalks that can easily lodge, resulting in poor-quality plants, especially during transportation. To control plant height and subsequently prevent flower peduncle lodging, we investigated the effects of two plant growth regulators (PGRs), chlormequat chloride (CCC) at 0, 250, 500, or 750 ppm and uniconazole (UNI) at 25, 50, or 75 ppm on growth, development, and flowering of two cultivars of baby primrose, Fragrant Luolan and Red Star. Plant growth regulators at the proposed concentrations were applied twice throughout the experiment. Both PGRs significantly suppressed plant height in both cultivars, with a 16% to 27% reduction by CCC and 50% to 59% by UNI compared with untreated plants. Among CCC-treated groups, plants were shortest when CCC was applied at 500 ppm; plant height was suppressed more when treated with UNI. In both cultivars, UNI significantly suppressed the first, second, and third peduncle lengths. Furthermore, CCC affected peduncle length, but to a lesser extent than UNI. Plant growth regulator applications generally had little effect on flower characteristics of baby primrose. Neither PGRs influenced the inflorescence number and flower size; however, PGRs did increase the number of floral whorls and suppressed pedicel length of ‘Red Star’. New leaf growth was suppressed by both PGRs. In addition, peduncle cell length and width were both significantly suppressed by PGR applications. We concluded that two foliar applications of UNI at 25 ppm comprised the most effective method of controlling baby primrose plant height while maintaining desirable flower traits at a relatively low production cost. Results of this study provide guidance for techniques that can be used to effectively control the plant height of potted baby primrose for commercial greenhouse production.
研究领域:
植物学
·
园艺学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xinyi Zhang,Jiakun Zhou,Zemin Li,Yimin Qin,Ruitao Yu,Huaiwei Zhang,Yuhong Zheng,Jiangwei Zhu,Demeng Zhang,Li Fu
Seaweed fertilizer refers to fertilizer created by extracting the active ingredients from raw seaweed that is then applied to plants as a nutrient source to promote growth and increase yield. A quick method of analysing seaweed fertilizer quality has practical value. In this work, we established a simple electrochemical method for analysing commercial seaweed fertilizer by comparing the contributions of each electro-active ingredient. The electrochemical profiles of 3-hydroxyphenylacetic acid, gibberellin, lycine, abscisic acid, indole-3-acetic acid and zeatin were first recorded in a database. Then, the electrochemical profiles of four commercial seaweed fertilizers were recorded and examined to analyse the contribution of each ingredient.
研究领域:
植物学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2024
·
IF 2.7
Lian Xia,Can Yuan,Tianqiang He,Jiaxin Cui
Facile and sensitive determination of plant growth regulators (PGRs) in food samples is crucial but still poses a significant challenge. In this study, to enhance the sensitivity of the HPLC-DAD method for PGR detection, a dispersive solid phase extraction (d-SPE) method using zeolitic imidazolate framework-8 (ZIF-8) as the highly effective adsorbent is developed. ZIF-8 nanoparticles are formed through the coordination of Zn2+ with 2-methylimidazole. Due to its high porosity, large surface area, abundant π electronics and nitrogen electronics, ZIF-8 exhibits a strong affinity to PGRs due to the synergistic effects of π–π interaction, van der Waals force, H-bond, and surface effect. Under the optimal d-SPE conditions, the sensitivity of the method is significantly enhanced with outstanding performances, including a wide range of linearity (2.0–200 ng g−1) with high correlation coefficients (R ≥ 0.9989), low limits of detection (LODs, 0.9–8.0 ng g−1 for all PGRs), satisfactory precision (intra-day RSDs ≤ 3.3%, inter-day RSDs ≤ 4.2%), and high accuracy (recovery: 86.6–101.5%). The developed method was successfully applied to quantitatively detect 9 PGRs in fruit samples, yielding satisfactory results. This d-SPE-HPLC-DAD method, characterized by high sensitivity, simplicity, efficiency, ease of practice and cost-effectiveness for PGR detection, shows potential for detecting PGRs in other complex samples and provides a strategy for designing target-affinity adsorbents.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Environmental Technology & Innovation
·
2025
·
IF 7.1
Chenyang Zhang,Jihai Zhou,Meng Na,Shangqi Xu,Xiaoping Li,Shoubiao Zhou
This study examined the effects of three exogenous plant growth regulators on the resistance physiology of Cinnamomum camphora ( C. camphora ) seedlings and their cadmium (Cd) absorption and transport under Cd stress. To this end, the efficacies of several plant growth regulators in the remediation of Cd-polluted soil were compared. This paper also provides a theoretical foundation for the ecological restoration of C. camphora and the incorporation of plant growth regulators in mining-abandoned and industrially polluted lands. The findings revealed that the application of 20 mg kg –1 3-indole acetic acid (IAA), gibberellin (GA 3 ), and 6-benzylaminopurine (6-BA) facilitated plant growth and enhanced the photosynthesis of C. camphora seedlings. Furthermore, the antioxidant capacity of C. camphora seedlings was improved: the superoxide dismutase activity decreased by 1.0 %, 11.7 %, and 24.4 %. Similarly, the ascorbic acid content decreased by 39.0 %, 17.9 %, and 22.2 %, respectively. These changes effectively boosted the ability of C. camphora seedlings to restore Cd-contaminated soil, consequently promoting Cd accumulation in plant organs and lowering soil Cd residue by 30.8 %, 12.9 %, and 18.1 %, respectively. The treatments also enabled Cd accumulation in the aboveground and underground parts of the seedlings, effectively increasing their resistance against Cd. These results demonstrate that applying plant growth regulators is a promising approach for strengthening phytoremediation in contaminated soils.
研究领域:
植物学
·
环境科学
·
生态学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2020
·
IF 6.306
Shenghuai Hou,Xiaowei Sun,Lizong Chen,Yanzhen Yin,Wenhua Ji
A new amino-modified Scholl-coupling mesoporous polymer (NH 2 @SMPA)-online solid-phase extraction method, coupled with high-performance liquid chromatography (online SPE-HPLC) was established for the analysis of six plant growth regulators (PGRs) in bean sprouts. NH 2 @SMPA was synthesized by acid-catalyzed deacetylation of acetylamino-Scholl-coupling mesoporous polymer (SMPA). The diversity of functional groups, such as aromatic, acetylamino, and NH 2 , was conducive to multiple binding interactions between NH 2 @SMPA and PGRs. NH 2 @SMPA exhibited superior extraction capability for PGRs, compared with SMPA and commercial adsorbents. The extraction conditions, including loading solvent, pH of loading solution, eluting solvent, and flow rates of loading and elution, were optimized. Under the optimized conditions, wide linear ranges (0.01–500 μg kg −1 ) and low detection limits (2.34–20.2 ng kg −1 ) were obtained. The recoveries were satisfactory, i.e., 86.0% to 109% with relative standard deviations ≤9.8% (n = 3). Finally, the online SPE-HPLC method was successfully used for determination of PGRs in bean sprouts.
研究领域:
分析化学
·
食品科学
✓ 已验证
DOI
PubMed
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 6
·2611
·
IF 4.6
Hui Ye,Yuqin Luo,Yanjie Li,Xiangyun Wang,Hongmei He,Jinhua Jiang,Jianzhong Yu,Changpeng Zhang
A simple and sensitive method for the simultaneous quantitation of prohexadione-Ca and uniconazole in the field experiment ofOryza sativaL. andCitrus reticulataBlanco was established using solid-phase extraction (SPE) with polymer anion exchange (PAX) and Florisil followed by LC-MS/MS. The method demonstrated excellent linearity (R2> 0.999 0), trueness (recoveries between 95~105%), precision (CVs between 0.8~12%), sensitivity, and repeatability (LOQ of 0.05 and 0.01 mg/kg, respectively). Residue tests were conducted in the field at 12 representative sites in China, revealing final concentrations of prohexadione-Ca and uniconazole in brown rice, rice hull, and rice straw to be below 0.05 mg/kg, while in whole citrus fruit and citrus pulp, they were below 0.01 mg/kg. These were below the maximum residue limits specified in China. The chronic dietary risks of prohexadione-Ca and uniconazole in rice crops and citrus fruits were calculated to be 0.48% and 0.91%, respectively. Our research suggests that the chronic risk associated with the daily consumption of rice crops and citrus fruit at the recommended dosage is acceptable.Keywords:Oryza sativaL.;citrus fruit;dietary intake risk assessment;plant growth regulators
研究领域:
植物学
·
农业科学
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Rui Cheng,Yiqun Wan,Xuejin Mao,Hao Wan,Fan Liu,Lan Guo,Bingzhen Zhang
This work presents an efficient sorbent for plant growth regulators (PGRs) by regulating the defects of a metal–organic framework MIL-101(Cr). Using the regulated MIL-101(Cr), we developed a simple and effective method for the simultaneous determination of eleven PGRs in fresh fruit juice. The extraction conditions were optimized by an orthogonal array design. Under optimal conditions, the method showed a satisfactory limit of detection (0.1–1.2 ng/g), recovery rates (83.4–110.2 %), and precision (2.9–18.0 % for intra-day and 2.7–10.8 % for inter-day), as well as a greatly suppressed matrix effect. Notably, regulating the defects significantly enhanced the desorption of PGRs on MIL-101(Cr). The sorbent didn’t need to be destroyed to release the adsorbed PGRs and could be reused at least 6 times. Furthermore, the defects of MIL-101(Cr) and interactions between the sorbent and PGRs were studied by TGA, ATR-IR, XPS, NH 3 -TPD and UV–Vis DRS.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 24
·16082
·
IF 6.208
Zhaoyang Li,Muhammad Junaid Rao,Jiaying Li,Yanting Wang,Peng Chen,Hua Yu,Chongjian Ma,Lingqiang Wang
Pectin is one of the constituents of the cell wall, distributed in the primary cell wall and middle lamella, affecting the rheological properties and the cell wall stickiness. Pectin methylesterase (PME) and pectin methylesterase inhibitor (PMEI) are the most important factors for modifying methyl esterification. In this study, 45PMEIgenes from rice (Oryza sativaL.) were screened by bioinformatics tools, and their structure, motifs, cis-acting elements in the promoter region, chromosomal distribution, gene duplication, and phylogenetic relationship were analyzed. Furthermore, CRISPR/Cas9 was used to edit theOsPMEI12(LOC_Os03G01020) and two mutantpmei12lines were obtained to explore the functions ofOsPMEIin plant growth and development, and under cadmium (Cd) stress. Compared to wild type (WT) Nipponbare, the second inverted internodes of the mutant plants shortened significantly, resulting in the reduction in plant height at mature stage. The seed setting rate, and fresh and dry weights of the mutants were also decreased in mutant plants. In addition, the pectin methylation ofpmei12lines is decreased as expected, and the pectin content of the cell wall increased at both seedling and maturity stages; however, the cellulose and hemicellulose increased only at seedling stage. Interestingly, the growth of thepmei12lines was better than the WT in both normal conditions and under two phytohormone (GA3and NAA) treatments at seedling stage. Under Cd stress, the fresh and dry weights were increased inpmei12lines. These results indicated thatOsPMEI12was involved in the regulation of methyl esterification during growth, affected cell wall composition and agronomic traits, and might play an important role in responses to phytohormones and stress.Keywords:Oryza sativaL.;pectin methylesterase inhibitor;cell wall;plant growth regulators;Cd stress
研究领域:
植物学
·
遗传学
·
分子生物学
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Mei Chen,Pingxiong Cai,Yuanfeng Pan
Agrochemicals play an irreplaceable role in the process of agricultural production. However, unreasonable use of agrochemicals can cause serious harm to the environment. Therefore, the controlled release of agrochemicals is critical in the sustainable development of agriculture and benefiting the environment. In this work, a composite hydrogel was prepared from dialdehyde cellulose and reinforced by polyvinyl alcohol (PVA) while cysteamine dihydrochloride acted as a cross-linking agent to render the hydrogel pH and redox-responsive for the controlled release of a model agrochemical, i.e., salicylic acid (SA). The aldehyde content in the modified cellulose reached 10.65 mmol/g while the yield of oxidized cellulose was 55%. The structure, morphology and properties of the composite hydrogels were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), thermal gravimetric analysis (TGA) and scanning electron microscopy (SEM). In addition, the release behavior of SA loaded in the hydrogels under various different conditions was also studied. The results showed that the addition of PVA could improve the mechanical properties of hydrogels, and the cumulative release of SA could be modulated by varying release conditions or environmental stimuli; and the release kinetics was well fitted with the Korsmeyer-Peppas model. Moreover, the release of SA could be promoted under acidic conditions and in the presence of reducing agent glutathione (GSH). The findings from this work particularly benefit the agricultural production.
研究领域:
农业科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2016
·
IF 4.712
Jiankun Cao,Hongyuan Yan,Shigang Shen,Ligai Bai,Haiyan Liu,Fengxia Qiao
New hydrophilic molecularly imprinted melamine-urea-formaldehyde monolithic resin (MIMR) is synthesized using dopamine hydrochloride as a dummy template via in-situ polymerization directly within pipette tips and it presents special molecular recognition to plant growth regulators in aqueous matrices. Hydrophilic groups (such as hydroxyl groups , imino groups , and amino groups) can be introduced into MIMR by melamine– urea–formaldehyde resin, which make MIMR materials compatible with aqueous media and show their specific molecular recognition in aqueous sample solutions. Meanwhile, monolithic structures avoid the influence of uneven filling on the extraction efficiency. Various parameters affecting the selective recognition of MIMR have been optimized, such as molar ratio of melamine to urea, molar ratio of melamine and urea to formaldehyde, the amount of template and porogen . The prepared MIMR is applied as the sorbents of solid phase extraction (SPE) for sensitive and selective recognition of three plant growth regulators ( p -chlorophenoxyacetic acid, 1-naphthaleneacetic acid and 2.4-dichlorophenoxyacetic acid) in bean sprouts. Considering its excellent hydrophilicity and specificity, MIMR–SPE is promising to be a potential pretreatment strategy in biological, environmental, and clinical fields.
研究领域:
分析化学
·
环境科学
·
农业科学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2016
·
IF 3.926
Mingyu Wang,Xiaochen Chang,Xingyu Wu,Hongyuan Yan,Fengxia Qiao
A water-compatible dummy molecularly imprinted resin (MIR) was synthesized in water using melamine, urea, and formaldehyde as hydrophilic monomers of co-polycondensation. A triblock copolymer (PEO-PPO-PEO, P123) was used as porogen to dredge the network structure of MIR, and N -(1-naphthyl) ethylenediamine dihydrochloride, which has similar shape and size to the target analytes, was the dummy template of molecular imprinting. The obtained MIR was used as the adsorbent in a green miniaturized solid-phase extraction (MIR⬜mini-SPE) of plant growth regulators, and there was no organic solvent used in the entire MIR⬜mini-SPE procedure. The calibration linearity of MIR⬜mini-SPE⬜HPLC method was obtained in a range 5⬜250 ng mL ↙1 for IAA, IPA, IBA, and NAA with correlation coefficient (r) Ⱕ0.9998. Recoveries at three spike levels are in the range of 87.6⬜100.0% for coconut juice with relative standard deviations Ⱔ8.1%. The MIR⬜mini-SPE method possesses the advantages of environmental friendliness, simple operation, and high efficiency, so it is potential to apply the green pretreatment strategy to extraction of trace analytes in aqueous samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2019
·
IF 5.399
Mingwei Wang,Hailiang Nie,Dandan Han,Xiaoqiang Qiao,Hongyuan Yan,Shigang Shen
New cauliflower-like phloroglucinol-glyoxylic acid resin microspheres (PGRMs) with controllable diameters and tuneable surface roughness were prepared using a one-step environmentally-friendly method without a catalyst. The PGRMs obtained exhibited a rough surface, narrow size distribution, and excellent adsorption capacity for polar compounds. The PGRMs were employed as an adsorbent for solid phase extraction (SPE) of kinetin (KT) and 6-benzyladenine (6-BA) in cucumbers and demonstrated better extraction recoveries and purification efficiency than phloroglucin-formaldehyde resin and common commercial adsorbents. Our PGRMs–SPE–HPLC method showed good linearity (r ≥ 0.9997) ranging from 0.04 to 4.00 μg/g for KT and 6-BA, and recoveries at three spiked concentration ranged from 77.8% to 104.4% with RSDs ≤ 6.8%. This PGRMs–SPE–HPLC method was applied successfully to determine of KT and 6-BA in cucumbers.
研究领域:
分析化学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）