Article
Marine & Freshwater Biology
So Shinya, Fumiya Nishibe, Yared Beyene Yohannes, Mayumi Ishizuka, Shouta M. Nakayama, Yoshinori Ikenaka
Summary: Pesticide exposure, especially neonicotinoid insecticides (NNIs), is a major factor contributing to the decline of amphibian populations worldwide. However, the metabolism, distribution, and neurotoxicity of NNIs in amphibians remain poorly understood. This study exposed Western clawed frogs to clothianidin (CLT) and found that the highest concentrations of CLT were detected in the skin, indicating high risk of skin absorption. Frogs also showed higher CLT metabolic ability compared to zebrafish. Additionally, NNI residues were detected in wild frogs, soil, and water in agricultural areas of Japan, suggesting the potential toxicity of NNIs to amphibians.
AQUATIC TOXICOLOGY
(2023)
Article
Multidisciplinary Sciences
Travis S. Schmidt, Janet L. Miller, Barbara J. Mahler, Peter C. Van Metre, Lisa H. Nowell, Mark W. Sandstrom, Daren M. Carlisle, Patrick W. Moran, Paul M. Bradley
Summary: Neonicotinoid mixtures are commonly found in streams worldwide, but their ecological impacts are not well understood. This study shows that exposure to neonicotinoids above certain thresholds can lead to a loss in taxa abundance and richness, disrupted adult emergence, and altered trophodynamics. The presence of neonicotinoid mixtures in California streams also poses greater than expected risks to stream health.
Article
Chemistry, Analytical
Nurullah Ozdemir, Mustafa Necati Muz
Summary: The widespread use of neonicotinoids in agriculture has led to environmental pollution due to its low toxicity to mammals. Honey bees, as biological indicators, can carry these pollutants to their hives. This study analyzes neonicotinoid residues in sunflower honey samples from beekeepers in Tekirdag province. The method used liquid-liquid extraction before liquid chromatography-mass spectrometry (LC-MS/MS). The results showed no neonicotinoid residues above the maximum residue limit in the sunflower honey samples analyzed.
INTERNATIONAL JOURNAL OF ANALYTICAL CHEMISTRY
(2023)
Article
Plant Sciences
Cui Li, Linlin Wang, Jingtao Wu, F. Pax C. Blamey, Nina Wang, Yanlong Chen, Yin Ye, Lei Wang, David J. Paterson, Thea L. Read, Peng Wang, Enzo Lombi, Yuheng Wang, Peter M. Kopittke
Summary: This study investigated the translocation of foliar-applied zinc in sunflower leaves using synchrotron-based X-ray fluorescence microscopy (XFM) and transcriptome analysis. The results showed that the distribution of zinc changed over time, with initial accumulation in the epidermal layers and subsequent movement to the vascular tissues. Transcriptome analysis revealed genes involved in stress response, cell wall reinforcement, and binding. These findings are of significance for improving the efficiency of foliar zinc fertilizers.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Yi Yang, Limin Su, Ying Huang, Xiao Zhang, Chao Li, Jia Wang, Lingyun Fan, Shuo Wang, Yuan H. Zhao
Summary: This study systematically investigated the bio-uptake, tissue distribution, and metabolism of neonicotinoids in zebrafish, focusing on clothianidin. The results showed low bioaccumulation potential of CLO in zebrafish, with highest accumulation in intestine and liver, where N-demethylation and nitro-reduction were identified as metabolic pathways. Liver and intestine were found to play a key role in the metabolism and elimination of CLO.
ENVIRONMENTAL POLLUTION
(2022)
Article
Agriculture, Multidisciplinary
Maura J. Hall, Ge Zhang, Matthew E. O'Neal, Steven P. Bradbury, Joel R. Coats
Summary: Adding habitat within agricultural ecosystems is important in supporting pollinators. Pesticide exposure to pollinator habitat near crop fields is necessary for risk assessments. Research found that neonicotinoids detected in milkweed leaves were at concentrations unlikely to negatively impact monarch butterfly larvae.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Article
Environmental Sciences
Muhammad Sajid Aqeel Ahmad, Alia Riffat, Mumtaz Hussain, Mansoor Hameed, Ambreen Khadija Alvi
Summary: This study investigated the effects of nickel application on physiological and biochemical attributes of sunflower cultivars grown in sand culture. Results showed that increasing nickel concentration significantly decreased vegetative parameters and photosynthetic attributes, while low levels of nickel improved growth attributes to some extent. The study also found that high nickel concentration had negative effects on leaf water potential, osmotic potentials, and relative water contents, but increased leaf turgor potential and membrane permeability. Hysun-33 exhibited higher tolerance to nickel stress compared to SF-187.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Abdul Qadir, Sergii Skakun, Jaemin Eun, Meghavi Prashnani, Leonid Shumilo
Summary: The interaction between sunflower and microwave signal is still not fully understood. Our analysis reveals differences in the backscattering response of sunflower in the ascending and descending orbits for VV polarization and VH/VV polarization ratio due to the directional behavior of the flower head. We found that VH/VVdes is a preferable parameter for identifying sunflower phenological stages.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Agriculture, Multidisciplinary
Ben A. Woodcock, Lucy Ridding, M. Gloria Pereira, Darren Sleep, Lindsay Newbold, Anna Oliver, Richard F. Shore, James M. Bullock, Matthew S. Heard, Hyun S. Gweon, Richard F. Pywell
Summary: The European Union instigated a moratorium on neonicotinoid seed treatments in 2013, but allowed their use on non-flowering crops like winter wheat. While clothianidin detection rates remained constant over three years, thiamethoxam residues disappeared and imidacloprid detection was infrequent but persistent. The highest neonicotinoid residues were associated with honey produced by foraging on oilseed rape and wild plants, leading to a full EU ban in 2018.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Pharmacology & Pharmacy
Shizuka Kubo, Tetsushi Hirano, Yuka Miyata, Shuji Ohno, Kanoko Onaru, Yoshinori Ikenaka, Shouta M. M. Nakayama, Mayumi Ishizuka, Youhei Mantani, Toshifumi Yokoyama, Nobuhiko Hoshi
Summary: This study investigated the sex differences in the neurobehavioral effects of a neonicotinoid pesticide, clothianidin (CLO), in mice. The results showed that acute exposure to CLO caused more pronounced decreases in locomotor activities and elevation of anxiety-like behaviors in male mice compared to females. Male mice also exhibited impairment in short- and long-term learning memory after CLO exposure. Additionally, male mice showed higher levels of CLO and its metabolites in blood and urine. These findings suggest that male mice may be more vulnerable to the neurobehavioral effects of CLO.
TOXICOLOGY AND APPLIED PHARMACOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Muhammad Shoaib Saleem, Muhammad Faheem Akbar, Muhammad Atif Javed, Amjad Sultan
Summary: This study aimed to assess the impact of neonicotinoid pesticides on flower visitation and pollination in sunflower crops. The research found that the use of imidacloprid, clothianidin, and thiamethoxam negatively affected the visitation of both Apis and Non-Apis bees, as well as butterflies, resulting in reduced sunflower productivity.
COGENT FOOD & AGRICULTURE
(2023)
Article
Biochemistry & Molecular Biology
Jiaxuan Bai, Xianmei Piao, Yanli Wang, Xiaoling Cheng, Mingfeng Feng, Yongming Wang, Rong Fu, Jinna Zhao, Shufei Yu, Ze Li, Libo Wang, Jian Huang, Jinhui Wang
Summary: Seven undescribed compounds, along with eighteen known compounds, were isolated from the water extract of Helianthus annuus L. flowers. The structures of these compounds were determined through spectroscopic analysis. Compound 6 exhibited significant inhibitory activity on the release of NO in MH-S cells, while compound 18 showed moderate inhibitory activity.
Article
Entomology
Cody Prouty, Lewis J. Bartlett, Vera Krischik, Sonia Altizer
Summary: This study investigates the effects of neonicotinoids on non-target nectar-feeding insects, particularly monarch butterflies. The results show that adult monarch butterflies can tolerate field-relevant doses of neonicotinoids with minimal effects on their survival, reproduction, flight, and behavior. However, higher doses of neonicotinoids can significantly impact monarch butterflies' nectar consumption, survival, flight performance, and reaction time.
ECOLOGICAL ENTOMOLOGY
(2023)
Article
Plant Sciences
Zahirul I. Talukder, William Underwood, Christopher G. Misar, Gerald J. Seiler, Xiwen Cai, Xuehui Li, Lili Qi
Summary: This study investigated the resistance against basal stalk rot (BSR) caused by Sclerotinia sclerotiorum in cultivated sunflower, introgressed from the wild sunflower Helianthus praecox ssp. runyonii. The research identified 19 BSR resistance quantitative trait loci (QTL) on nine sunflower chromosomes, with 16 of them deriving resistant alleles from H. praecox parent. These findings provide genetic markers for marker-assisted breeding to combat BSR in sunflower.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Vincenzo Girolami, Edoardo Petrucco Toffolo, Luca Mazzon, Francesca Zampieri, Andrea Lentola, Chiara Giorio, Andrea Tapparo
Summary: This study explores the effects of neonicotinoid insecticides on forager bees and their foraging activity. It shows that even low concentrations of the insecticides can limit foraging activity, protecting the hive from toxins, but reduced feeding of the hive can still compromise colony health.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)