[Effects of Bacillus fertilizer and agent on growth of young peach tree and soil environment under replant condition.] / èŠ½å­¢æ†èŒèŒè‚¥å’ŒèŒå‰‚å¯¹è¿žä½œæ¡ä»¶ä¸‹æ¡ƒå¹¼æ ‘ç”Ÿé•¿å’ŒåœŸå£¤çŽ¯å¢ƒçš„å½±å“.

We analyzed the effects of Bacillus fertilizer and agent supplementation at different concentrations in the replanted soil by examining the growth of young peach trees, soil nutrients, enzyme activities, and fungal commu-nity. The aim of this study was to provide theoretical basis for alleviating peach replant diseases. One-year-old potted 'Yuanmeng' peach trees were subjected to eight treatments: replanted soil without supplementation (RS), non-replanted soil without supplementation (NS), replanted soil with 1%, 4%, 8% Bacillus fertilizer supplementation (BF1, BF2, BF3), and 0.1‰, 0.5‰, 1‰ Bacillus agent supplementation (B1, B2, B3), respectively. The results showed that shoot growth and root biomass under NS treatment were greater than that under other treatments, and the contents of soil organic matter, available nutrients and soil catalase activity were greatly enhanced. Peach trees treated with BF and B treatments showed better root development than RS, among which, BF3 and B1 treatments were the best, and B1 treatment had similar effects as NS treatment. Compared with RS, BF and B treatments significantly increased the activities of soil catalase and urease during new shoot development, while B treatment significantly increased soil sucrase activity after the growth cessation of new shoots. Bacillus fertilizer and agent increased soil fungal diversity and the relative abundance of Ascomycota, Chaetomium and Penicillium, and decreased that of Basidiomycota. Considering the comprehensive parameters, BF3 and B1 showed more significant effects. In summary, our findings indicated that the supplementation of Bacillus fertilizer and agent to replanted soil could improve soil fertility, fungal community, and root development of roots, and thus provided a feasible method to alleviate peach replant diseases.

Ameliorative effect of ginsenoside Rg1 on dextran sulfate sodium-induced colitis: involvement of intestinal barrier remodeling in mice.

Background: Ginsenoside Rg1, a major bioactive ingredient of Panax notoginseng, has been shown to reduce gut inflammation and ameliorate experimental colitis in mice. However, it is not yet known whether it affects the intestinal barrier injury of colitis. Methods: This study explored the effect of ginsenoside Rg1 on intestinal barrier injury in dextran sulfate sodium (DSS)-induced colitis mice through an ultrastructure observation of the colonic mucosa and analysis of the expression of colonic cytoplasmatic zonula occludens-1 (ZO-1) protein. Results: Treatment with ginsenoside Rg1, especially high-dose use, significantly ameliorated colonic histopathologic features and the severity of the colitis and reduced colonic tumor necrosis factor-α (TNF-α), interferon-γ (IFN-γ) levels and increase IL-4 levels in a mouse model of DSS-induced colitis. Its observed efficacy was comparable to that of 5-Aminosalicylic acid (5-ASA), a first-line therapeutic agent for ulcerative colitis. Notably, ginsenoside Rg1 administration was shown to up-regulate the expression of colonic ZO-1 protein, and it repaired the intestinal barrier structure in DSS-induced colitis mice. Conclusions: Taken together, our findings demonstrated that ginsenoside Rg1 treatment can significantly ameliorate the severity of DSS-induced colitis in mice, which involves intestinal barrier structure remodeling through lowering the levels of the colonic pro-inflammatory cytokines TNF-α and IFN-γ and increasing the anti-inflammatory cytokine IL-4. These results suggest the potential therapeutic use of ginsenoside Rg1 as a promising approach for the treatment of inflammatory bowel disease (IBD).

Water-Tolerant ortho-Acylation of Phenols.

A metal-free, water-tolerant, and one-pot process for ortho-acylation of phenols promoted by the iodine source/hydrogen peroxide system has been developed. This transformation undergoes ether formation, iodocyclization, C-C bond cleavage, and oxidative hydrolysis in a one-step manner, which is supported by control experiments.

Chromosome-Scale Genome Assembly of the Resurrection Plant Acanthochlamys bracteata (Velloziaceae).

Acanthochlamys bracteata (Velloziaceae) is a resurrection plant with cold tolerance. Herein, a chromosome-level reference genome of A. bracteata based on Nanopore, Illumina, and Hi-C data is reported. The high-quality assembled genome was 197.97 Mb, with a scaffold N50 value of 8.64 Mb and a contig N50 value of 6.96 Mb. We annotated 23,509 protein-coding genes. Eight contracted gene families and three expanded gene families were detected. Repeat sequences accounted for approximately 28.63% of the genome. The LEA1 and Dehydrin gene families, which are involved in desiccation resistance, expanded in A. bracteata. We identified genes involved in chilling tolerance, COLD1.

A highly stretchable humidity sensor based on spandex covered yarns and nanostructured polyaniline.

Stretchable sensors, as the important components of flexible electronic devices, have achieved progress in a variety of applications for monitoring physical or environmental conditions, such as sound, temperature, vibration, and pressure. However, it still remains a challenge to fabricate high performance stretchable humidity sensors. Herein, we present a novel stretchable humidity sensor, which was fabricated based on an ultrastretchable polyaniline composite fiber. Because of the composite fiber with a "twining spring" configuration (cotton fibers twining spirally around a polyurethane fiber) it maintains a stable electrical conductivity up to a strain of 200%. In addition, the conductivity of the composite fiber remains perfectly stable after 5000 cyclic stretching events of 200% strain. Incorporating the humidity sensitive properties of nanostructured polyaniline, the stretchable humidity sensor based on the composite fiber effectively maintains its humidity sensitivity at different elongations.