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Background: Premature ejaculation (PE) is the most prevalent sexual dysfunction among men. Eejaculation involves a complex nervous mechanism in which the ejaculatory centers play a key role in modulating sperm emission. Although treatment possibilities span from psychotherapy to pharmacological approaches, results show inconsistent efficacy. In this context, the emergence of repetitive transcranial magnetic stimulation (rTMS) as a non‐invasive neuromodulatory approach represents a compelling avenue for potential therapeutic exploration. Objective: To investigate whether high‐frequency transcranial magnetic stimulation can modulate the ejaculatory behavior of rats with rapid ejaculation by altering neurotransmitter levels and neuroplasticity in the hippocampus. Methods: Rats have been screened for rapid ejaculation by observing behavioral indices of mating, and subsequently divided into two groups. The intervention group was administered with a 10 Hz rTMS stimulation, whereas the control group received a sham procedure. Upon the delivery of rTMS, we investigated ejaculation latency (EL), the hippocampal 5‐hydroxytryptamine (5‐HT) concentration, brain‐derived neurotrophic factor (BDNF), synaptophysin (SYN), and postsynaptic density protein 95 (PSD95) expressions, as well as BDNF‐receptor tyrosine kinase receptor B (TrkB) pathway upregulation. Results: After 14 days, EL was increased in the intervention group compared with the control group. 5‐HT concentration in the hippocampal region was increased, and high‐frequency rTMS activated the BDNF and TrkB pathways, including phosphorylation of cAMP response element‐binding protein (CREB), and upregulated the transcription and protein expression of SYN, and PSD95. Conclusion: RTMS upregulates BDNF, SYN, and PSD95 expression through activation of the BDNF–TrkB pathway and increases brain 5‐hydroxytryptamine thereby regulating neuroplasticity and improving ejaculation. [ABSTRACT FROM AUTHOR]

Male sterility is a valuable trait for plant breeding and hybrid seed production. The dominant male-sterile gene Ms2 in common wheat has facilitated the release of hundreds of breeding lines and cultivars in China. Here, we describe the map-based cloning of the Ms2 gene and show that Ms2 confers male sterility in wheat, barley and Brachypodium. MS2 appears as an orphan gene within the Triticinae and expression of Ms2 in anthers is associated with insertion of a retroelement into the promoter. The cloning of Ms2 has substantial potential to assemble practical pipelines for recurrent selection and hybrid seed production in wheat.

Premature ejaculation is a common male sexual dysfunction. It seriously afects the life quality of patient and the relationship with his spouse, and in the long run, it may lead to serious personal consequences such as distress, anxiety, and stress. The proportion of patients with acquired premature eeaculation is relatively high among premature eeaculation patients, and they are more wiiling to seek or plan to seek treatment. Existing researches have demonstrated that 5-hydroxytryptophan synthesis is important in the development of premature eeaculation. The kynurenine pathway, which is one of the tryptophan metabolic pathways, may be associated with the development of premature eeaculation. Currently, the relationship between this pathway and premature eeaculation remains largely uncharacterized. This article summarizes and reviews the relationship between the kynurenine pathway and acquired premature eeaculation. [ABSTRACT FROM AUTHOR]

Cultivating high‐yield wheat under limited water resources is crucial for sustainable agriculture in semiarid regions. Amid water scarcity, plants activate drought response signaling, yet the delicate balance between drought tolerance and development remains unclear. Through genome‐wide association studies and transcriptome profiling, we identified a wheat atypical basic helix‐loop‐helix (bHLH) transcription factor (TF), TabHLH27‐A1, as a promising quantitative trait locus candidate for both relative root dry weight and spikelet number per spike in wheat. TabHLH27‐A1/B1/D1 knock‐out reduced wheat drought tolerance, yield, and water use efficiency (WUE). TabHLH27‐A1 exhibited rapid induction with polyethylene glycol (PEG) treatment, gradually declining over days. It activated stress response genes such as TaCBL8‐B1 and TaCPI2‐A1 while inhibiting root growth genes like TaSH15‐B1 and TaWRKY70‐B1 under short‐term PEG stimulus. The distinct transcriptional regulation of TabHLH27‐A1 involved diverse interacting factors such as TaABI3‐D1 and TabZIP62‐D1. Natural variations of TabHLH27‐A1 influence its transcriptional responses to drought stress, with TabHLH27‐A1Hap‐II associated with stronger drought tolerance, larger root system, more spikelets, and higher WUE in wheat. Significantly, the excellent TabHLH27‐A1Hap‐II was selected during the breeding process in China, and introgression of TabHLH27‐A1Hap‐II allele improved drought tolerance and grain yield, especially under water‐limited conditions. Our study highlights TabHLH27‐A1's role in balancing root growth and drought tolerance, providing a genetic manipulation locus for enhancing WUE in wheat. [ABSTRACT FROM AUTHOR]