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Tandem mass tag-based quantitative proteomics and targeted hormone analysis reveal the response to insect herbivory stress in Ginseng (Panax ginseng, L.).
PLoS One
January 2025
Wuzhou University, College of Food and Pharmaceutical Engineering, Guangxi, P. R. China.
Ginsenosides are the most important secondary metabolites of ginseng. Ginseng has developed certain insect resistance properties during the course of evolutionary environmental adaptation. However, the mechanism underlying the insect resistance of ginseng is poorly understood.
View Article and Find Full Text PDFIdentification of a novel butenolide signal system to regulate high production of tylosin in Streptomyces fradiae.
Appl Microbiol Biotechnol
January 2025
State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.
Identifying hormone-like quorum sensing (QS) molecules in streptomycetes is challenging due to low production levels but is essential for understanding secondary metabolite biosynthesis and morphological differentiation. This work reports the discovery of a novel γ-butenolide-type signaling molecule (SFB1) via overexpressing its biosynthetic gene (orf18) in Streptomyces fradiae. SFB1 was found to be essential for production of tylosin through dissociating the binding of its receptor TylP (a transcriptional repressor) to target genes, thus activating the expression of tylosin biosynthetic gene cluster (tyl).
View Article and Find Full Text PDFAssociation between Sex Hormones and Mood, Cravings and Urges in Males and Females Who Smoke Tobacco.
Nicotine Tob Res
January 2025
Department of Family Medicine and Community Health, University of Minnesota.
Background: Mood influences smoking behavior, with sex and sex hormones potentially complicating these relationships. We explored associations between Profile of Mood States (POMS) and Questionnaire on Smoking Urges (QSU) - Brief with sex hormones in men and women who smoke.
Methods: This is a secondary analysis of treatment non-responders from a smoking cessation randomized trial investigating exogenous progesterone's efficacy.
Layer-specific control of inhibition by NDNF interneurons.
Proc Natl Acad Sci U S A
January 2025
Modelling of Cognitive Processes, Berlin Institute of Technology, Berlin 10587, Germany.
Neuronal processing of external sensory input is shaped by internally generated top-down information. In the neocortex, top-down projections primarily target layer 1, which contains NDNF (neuron-derived neurotrophic factor)-expressing interneurons and the dendrites of pyramidal cells. Here, we investigate the hypothesis that NDNF interneurons shape cortical computations in an unconventional, layer-specific way, by exerting presynaptic inhibition on synapses in layer 1 while leaving synapses in deeper layers unaffected.
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