Chloroplast genome analyses provide critical insights into plant genetic diversity, evolution, and responses to abiotic stress. In Beta vulgaris L., a major crop contributing approximately 20
Many inland waters are shrinking due to shifts in climate and water diversion for human uses. As they dry out, their exposed sediments emit large amounts of carbon dioxide (CO2) to the atmosphere. However, current global estimates of CO2 emissions from dry inland waters are derived exclusively from bare sediment dark-chamber measurements that do not account for the colonization of desiccated areas by vegetation. To understand the impact of vegetation on CO2 emissions from dry sediments, we analyzed 164 dry inland water bodies across five climatic regions and five inland water body types (lakes, ponds, reservoirs, streams and wetlands). On average, within vegetated zones, vegetation occupied 47 +/- 35% in measured biomass quadrants. Light-induced decreases in instantaneous CO2 emissions in vegetated dry sediments were lower (mean +/- SD = -3.7 +/- 12.9 mmol CO2 m-2 hr-1) than increases during dark conditions (14.7 +/- 20.1 mmol CO2 m-2 hr-1). Diel (24-hr) CO2 emissions from dry, vegetated sediments (mean +/- SD = 100 +/- 261 mmol CO2 m-2 d-1) were 25% lower than in bare sediments (133 +/- 245 mmol CO2 m-2 d-1). These results indicate that vegetation can partially off-set sediment respiration, although the magnitude of this effect is insufficient to switch dry beds from net sources to net sinks of carbon.
In this study, the antibacterial properties of three boron-rich nanoparticles called B-86, B-90, and B-95, containing different amounts of boron (B) and magnesium (Mg), were investigated. Current work reports the antibacterial, antibiofilm, antioxidant, and DNA cleavage activities of the B-86, B-90, and B-95. Maximum antioxidant percent values of B-86, B-90, and B-95 were detected as 98.42%, 95.02%, and 91.62% at 100 mg/L concentration, respectively. B-90 and B-95 also caused complete degradation of E. coli pBR 322 plasmid DNA. According to the antimicrobial activity results it was detected that S. aureus and E. hirae were more sensitive to B compounds. B-86, B-90, and B-95 showed inhibition of E. coli cell viability, achieving 99.99%, 100%, and 100% inhibition at 250 mg/L concentration. The biofilm inhibition activity results of B-86, B-90, and B-95 against S. aureus and P. aeruginosa were determined in the range of 80.80%-99.57%. B-95 nanoparticles and boric acid affected barley germination in a dose-dependent manner. Low to moderate concentrations (0.1-3 mg/L) enhanced radicle and coleoptile growth, whereas the highest dose (50 mg/L) inhibited seedling development. B-95 exhibited stronger inhibitory effects than boric acid, but at optimal doses, it promoted growth. Both B-95 and boric acid also demonstrated antimicrobial, antibiofilm, and DNA cleavage potential.
The brown marmorated stink bug (BMSB), Halyomorpha halys (Hemiptera: Pentatomidae), is an invasive pest from East Asia that threatens crops by damaging fruit yield and quality. Conventional insecticides against BMSB disrupt integrated pest management, harming beneficial insects and triggering secondary pest outbreaks. This study examines alternative control methods by applying some bio-products (Dentamet, Hagax, Nimbecidine) to BMSB 1-day- and 5-day-old egg masses in the laboratory and hazelnut orchard conditions to inhibit acquisition of 'Candidatus Pantoea carbekii' and assess nymphal mortality. The tested bio-products included Dentamet (zinc, copper, citric acid), Hagax (copper hydroxide and oxychloride), and Nimbecidine (neem oil + Azadirachtin), with Nu-Film-P as an additive. In laboratory trials, bio-products did not significantly affect the hatching rate of 1-day-old eggs; however, Nimbecidine significantly reduced the hatching of 5-day-old eggs (65.0%, p < 0.05). Regarding survival, Dentamet applied to 1-day-old eggs resulted in the highest nymphal mortality (66.2% in the first instar and 75.5% total mortality by the end of the second instar, p < 0.05), while Hagax and Nimbecidine showed lower, non-significant effects on mortality compared to controls. In orchard trials, Dentamet produced the highest mortality (> 30% in both egg age groups) but showed statistical significance only in 5-day-old eggs (31%, p < 0.05). Real-Time PCR confirmed substantial reduction in symbiont acquisition in nymphs hatching from egg masses treated 1-day post-oviposition with Dentamet, evidenced by decreased log2-Delta Delta Ct values (-17.24), indicating approximately 150 000-fold reduction in symbiont abundance and providing molecular verification of the inhibition mechanism. These findings indicate that only Dentamet demonstrated substantial mortality effects under laboratory conditions, particularly on nymphs hatching from egg masses treated 1-day post-oviposition. However, the limited statistically significant effects in orchard conditions indicate that application timing, frequency, and dosages need to be optimized to enhance efficacy. Further laboratory and field studies are necessary to fully assess the feasibility of this symbiont-targeted approach.
Growing evidence suggests that esculetin, a 5-lipoxygenase inhibitor, has pharmacotherapeutic potential due to its various pharmacological properties, such as potent anti-inflammatory, anti-nociceptive, and γ-aminobutyric acid type A (GABAA) receptor partial agonist activities. However, the effects of this promising agent on migraine remain unexplored. This study therefore examined the impact of esculetin on relevant mechanisms in migraine-like conditions in rats. The systemic effects of esculetin at three distinct doses (5, 10, and 20 mg/kg) were tested in a nitroglycerin (NTG)-induced migraine model using in vivo experimental sets. The direct action of esculetin on the release of calcitonin gene-related peptide (CGRP) from critical structures of the trigeminovascular system (trigeminal ganglion, trigeminal nucleus, and meningeal afferents) was also tested in ex vivo experimental sets. Sumatriptan was used as a positive control in both sets of experiments. The in vivo results showed that esculetin reduced NTG-induced mechanical hyperalgesia and decreased trigeminal CGRP and cellular Fos proto-oncogene (c-Fos) levels. It also decreased degranulation and meningeal mast cell numbers. The ex vivo results revealed that esculetin reduced NTG-stimulated CGRP release from trigeminovascular explants, with the exception of meningeal explants. Sumatriptan reversed the NTG-induced changes in both experimental sets. Our findings suggest that esculetin exhibits anti-nociceptive activities in experimental migraine conditions, alleviating trigeminovascular CGRP concentrations and the degranulation of meningeal mast cells. Esculetin may thus represent a therapeutic option for relieving migraine headaches, although further research is needed to confirm this.
