As the herbicide acetochlor (ACT) affects the plankton food web, this study investigated the effects of ACT and exocrine infochemicals from daphnids (after ACT exposure and/or starvation) on Scenedesmus obliquus growth, as well as the effects of ACT and starvation on life-history traits of Daphnia magna. Filtered secretions from daphnids increased algal ACT tolerance, dependent on different ACT exposure histories and food intake. Endogenous and secretory metabolite profiles of daphnids following ACT and/or starvation appear to be regulated by the fatty acid synthesis pathway and sulfotransferases and were related to energy allocation trade-offs. Oleic acid (OA) and octyl sulfate (OS), screened by secreted and somatic metabolomics, affected algal growth and ACT behavior in the algal culture in opposite ways. Trophic and non-trophic interspecific effects caused by ACT were observed in microalgae-daphnid microcosms, including algal growth inhibition, daphnid starvation, OA down-regulation, and OS up-regulation. Based on these findings, risk assessment of ACT on the freshwater plankton communities should take species interactions into account.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.scitotenv.2023.164718 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nanocatalytic medicine for treating cancer requires effective, versatile and novel tools and approaches to significantly improve the therapeutic efficiency for the interactions of (non-)enzymatic reactions. However, it is necessary to develop (non-)enzymatic nanotechnologies capable of selectively killing tumour cells without harming normal cells. Their therapeutic characteristics should be the adaption of tumours' extra- and intracellular environment to being specifically active.
View Article and Find Full Text PDFCharacterization of sulfakinin and its role in larval feeding and molting in Spodoptera frugiperda.
Insect Sci
January 2025
Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, China.
Feeding and molting are particularly important physiological processes for insects, and it has been reported that neuropeptides are involved in the nervous regulation of these 2 processes. Sulfakinin (SK) is an important neuropeptide that is widely distributed among insects and plays a pivotal role in regulating feeding, courtship, aggression, and locomotion. In this study, we investigated the involvement of SK in feeding and molting on a highly notorious pest insect, the fall armyworm, Spodoptera frugiperda.
View Article and Find Full Text PDFThyroid hormones reversibly inhibit metamorphic development in ophiuroid larvae.
J Exp Biol
January 2025
University of Guelph, 50 Stone Rd E, Guelph, N1G 2M7, Canada.
The timing of metamorphosis and settlement is critical for the survival and reproductive success of marine animals with biphasic life cycles. Thyroid hormones (THs) regulate developmental timing in diverse groups of chordates, including the regulation of metamorphosis in amphibians, teleosts, lancelets, tunicates, and lampreys. Recent evidence suggests a role for TH regulation of metamorphosis outside of the chordates, including echinoderms, annelids, and molluscs.
View Article and Find Full Text PDFNonreceptor tyrosine kinase ABL1 regulates lysosomal acidification by phosphorylating the ATP6V1B2 subunit of the vacuolar-type H-ATPase.
Autophagy
January 2025
State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Biotechnology, Beijing, China.
The vacuolar-type H-ATPase (V-ATPase) is a proton pump responsible for controlling the intracellular and extracellular pH of cells. Its activity and assembly are tightly controlled by multiple pathways, of which phosphorylation-mediated regulation is poorly understood. In this report, we show that in response to starvation stimuli, the nonreceptor tyrosine kinase ABL1 directly interacts with ATP6V1B2, a subunit of the V domain of the V-ATPase, and phosphorylates ATP6V1B2 at Y68.
View Article and Find Full Text PDFRTN4IP1 Contributes to ESCC via Regulation of Amino Acid Transporters.
Adv Sci (Weinh)
January 2025
Department of Pathophysiology, School of Basic Medical Sciences, The Collaborative Innovation Center of Henan Province for Cancer Chemoprevention, State Key Laboratory of Esophageal, Cancer Prevention and Treatment, Provincial Cooperative Innovation Center for Cancer Chemoprevention, China-US (Henan) Hormel Cancer Institute, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou, 450000, China.
Esophageal squamous cell carcinoma (ESCC) accounts for about 90% of esophageal cancer cases. The lack of effective therapeutic targets makes it difficult to improve the overall survival of patients with ESCC. Reticulon 4 Interacting Protein 1 (RTN4IP1) is a novel mitochondrial oxidoreductase.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!