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Soybean cyst nematode (SCN) Heterodera glycines Ichinohe, a plant parasite, is one of the most serious pests of soybean. In this paper, we report that SCN is attracted to nitrate and its analogs. We performed attraction assays to screen for novel attractants for SCN and found that nitrates were attractants for SCN and SCN recognized nitrate gradients. However, attraction of SCN to nitrates was not observed on agar containing nitrate. To further elucidate the attraction mechanism in SCN, we performed attraction assays using nitrate analogs ([Formula: see text], [Formula: see text], [Formula: see text]). SCN was attracted to all nitrate analogs; however, attraction of SCN to nitrate analogs was not observed on agar containing nitrate. In contrast, SCN was attracted to azuki root, irrespective of presence or absence of nitrate in agar media. Our results suggest that the attraction mechanisms differ between plant-derived attractant and nitrate.
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http://dx.doi.org/10.1080/09168451.2017.1332980 | DOI Listing |
Anal Chim Acta
November 2025
Chemical and Veterinary Investigations Office Stuttgart, Schaflandstraße 3/2, 70736, Fellbach, Germany.
Background: Previous studies involving cleanup via conventional solid-phase extraction (SPE) materials to overcome matrix effects for the polar organophosphonate and -phosphinate pesticides glyphosate, glufosinate, ethephon, fosetyl, and their various metabolites often showed limitations due to the existence of various matrix compounds in plant commodities with similar polarity. To overcome existing drawbacks, we utilized the unique selectivity provided by metal oxides as SPE materials. These were exploited in a novel automated online SPE-LC-MS/MS method which allowed analyte-specific trapping in the presence of excessive amounts of matrix compounds as typically contained in extracts of the Quick Polar Pesticides (QuPPe) method.
View Article and Find Full Text PDFInorg Chem
August 2025
Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States.
Nitrate (NO) and perchlorate (ClO) are persistent groundwater contaminants due to their high stability and solubility. Microorganisms reduce these anions using molybdenum-containing enzymes such as nitrate reductases and perchlorate reductases. Reported here is a bioinspired dinuclear Mo(V) catalyst, [MoO(L)(THF)] (), where L = 5-Bromo-2-hydroxybenzaldehyde thiosemicarbazone, and its reactivity with nitrate and perchlorate.
View Article and Find Full Text PDFDent J (Basel)
August 2025
College of Dental Medicine, Rangsit University, Pathumthani 12000, Thailand.
: This study evaluates the effectiveness of a toothpaste containing Java Tea and Little Ironweed in alleviating tooth sensitivity compared to a conventional potassium nitrate toothpaste. : A total of 90 healthy patients aged 18-70 with up to two teeth exhibiting gingival recession were recruited into this study. All selected teeth had a visual analog scale (VAS) score ≥ 4 in response to tactile or air blast stimuli.
View Article and Find Full Text PDFJ Environ Manage
September 2025
College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China. Electronic address:
This study investigated microbial responses to multi-level N and P (N: 0, 5, 10, 15 g N m- yr-; P: 0, 5, 10, 15 g P m- yr-) additions in Tibetan Plateau swamp meadow experiencing permafrost degradation. High-throughput sequencing and physicochemical properties revealed distinct hierarchical responses of bacteria and methanogens in the soil layers (0-10 cm, 10-20 cm). This study revealed that: (1) Nitrogen reduced bacterial α-diversity (surface/subsurface Shannon index decreased by 0.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
January 2026
Key Laboratory of Laser Spatial Information, Harbin Institute of Technology, Harbin 150080, China; Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450000, China.
Melamine contamination from illegal additives, packaging contaminants, and pesticide residues threatens dairy product safety, demanding rapid detection. Traditional methods such as chromatography or mass spectrometry are precise but lack field applicability due to complexity, time consumption, and cost. Surface-enhanced Raman spectroscopy (SERS) is a promising alternative for sensitive, rapid, and label-free analysis.
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