Abstract Polysaccharides are ideal natural resources for supplements and pharmaceuticals that have received more attention over the years. Natural polysaccharides been shown to fewer side effects, but because of their inherently physicochemical properties, bioactivities were difficult compare with those synthetic drugs. Thus, researchers modified structures properties based on structure–activity relationships obtained better functionally improved polysaccharides. This review focuses major...

Dark septate endophytes (DSE) may facilitate plant growth and stress tolerance in stressful ecosystems. However, little is known about the response of plants to non-host DSE fungi isolated from other plants, especially under drought condition. This study aimed seek apply evaluate their promoting effects a desert species, Ammopiptanthus mongolicus, Nine strains super-xerophytic shrub, Gymnocarpos przewalskii, were identified used as DSE. And colonization rate (30-35%) species composition...

We analyzed the concentrations of 17 elements including arsenic (As), lead (Pb), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), zinc (Zn), strontium (Sr), tin (Sn), aluminum (Al), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), sodium (Na), and selenium (Se) in cow, goat, buffalo, yak, camel milk China using inductively coupled plasma mass spectrometry. The varied depended on type. K, Ca, Na, Mg were most abundant elements. Fe Zn ranged from 1 to 6 μg g-1,...

Root-knot nematodes (Meloidogyne spp.) cause serious crop losses worldwide. The colonization of tomato roots by endophytic bacteria Bacillus cereus BCM2 can greatly reduce Meloidogyne incognita damage, and carrying were repellent to M. second-stage juveniles (J2). Here, the effects on composition root exudates was evaluated potential mechanisms for BCM2-mediated control explored using a linked twin-pot assay GC-MS. On water agar plates, J2 preferentially avoided filter paper treated with...

Little attention has been paid to the combined use of arbuscular mycorrhizal fungus (AMF) and steel slag (SS) for ameliorating heavy metal polluted soils. A greenhouse pot experiment was conducted study effects SS AMF−Funneliformis mosseae (Fm), Glomus versiforme (Gv) Rhizophagus intraradices (Ri) on plant growth Cd, Pb uptake by maize grown in soils added with 5 mg Cd kg−1 300 soil. The usage AMF (AMF + SS) promoted growth, Gv had most obvious effect. Meanwhile, single addition decreased...

The endophytic bacterium Bacillus cereus BCM2 has shown great potential as a biocontrol organism against Meloidogyne incognita, which causes severe root-knot diseases in crops. In our previous study, the metabolite of showed high nematicidal activity M. incognita second-stage juveniles. However, mechanism employed by bacteria to infect and kill nematodes is still unclear. Here, we investigate both bacterial extracellular proteins with their killing nematodes. first step was detecting...

With the global rise in life expectancy, incidence of dementia is increasing, often accompanied by depressive symptoms. Understanding interplay between and depression crucial, as may not only co-occur with but also potentially exacerbate progression dementia. This study employs bibliometric analysis to map research landscape, identify prevailing themes, discern future directions. We analyzed reviews original articles on extracted from Web Science Core Collection spanning 2005 2024. Utilizing...

The aim of this work is to deproteinize crude polysaccharide from the Stigma maydis by sevag method. According deproteinization rate and residual rate, optimized process was number (4 times), time oscillating (11min), volume ratio sample reagent (2:1), chloroform n-butyl alcohol (5:1), 64.2%, loss 34.3%, purity increased 11.5% 32.3%.

The endophytic bacteria Bacillus cereus BCM2 has shown great potential as a defense against the parasitic nematode Meloidogyne incognita. Here, we studied bacteria-mediated plant M. incognita and searched for defense-related candidate genes using RNA-Seq.The induced systemic resistance of was tested split-root method. Pre-inoculated on inducer side associated with dramatic reduction in galls egg masses responder side, but inoculated alone did not produce same effect. In order to investigate...

Clinical signs of a disease locally referred to as "unsteady gait disease" for the Tibetan gazelle (Procapra picticaudata) were observed in Qinghai Lake watershed area, China. The objective this study was determine if there relationship between and copper (Cu) deficiency. Chemical examinations showed that Cu concentrations soil forage samples similar from areas where gazelles affected unaffected. However, sulfur (S) molybdenum (Mo) area significantly higher than those unaffected (P<0.01)....

The effects of supplemental UV-A (385 nm) period and intensity for 5 days before harvest (DBH) on growth, antioxidants, antioxidant capacity, glucosinolates contents in Chinese kale (Brassica oleracea var. alboglabra Bailey) were studied plant factory. In the experiment period, three treatments designed with 10 W·m-2 supplement, T1(5 DBH), T2 (10 no as control. intensity, four DBH, control (0 W·m-2), w (5 15 (15 W·m-2). growth light is follows: 250 μmol·m-2·s-1; red light: white = 2:3;...

The root-knot nematode (Meloidogyne spp.), which represents a global threat to agricultural production, can cause serious losses in both the yield and quality of many crops. Endophytic bacteria are known have great potential against Meloidogyne incognita. colonisation ability endophytic Bacillus cereus BCM2 tomato roots its biological control efficacy M. incognita were investigated. By end growth period plants, population rhizosphere soils 5.86 3.38 log CFU g−1, respectively, indicating that...

In this study, we selected the 10 most common tomato leaf diseases with reference to disease symptoms of tomato, and built a dataset labelimg After preprocessing leaves labeling, applied two learning models, EfficientNetV2 YoloV5" is convolutional network model just released in April 2021, can better classify an effective degree, it has training speed efficiency compared previous series models. image classification EfficientNetV2, target detection needed, since algorithm for recognition...

The clinical signs of disorder known locally as “emaciation ailment” in Bactrian camels Haizi, Qinhai, China were defined. They included pica, emaciation, dyskinesia, deprived appetites and anemia. We found that concentrations copper (Cu) soil forage from affected and  unaffected areas similar, but the sulfur (S) significantly higher (P<0.01) than areas. Concentrations Cu blood, hair liver lower those camels. Fifty grazing on pastures consuming an average 136 mg Cu/d for 80 d by a...

The detection of cucumber leaf diseases is a pivotal link for preventing yield reduction. Manual lacks real-time performance and wastes lot human resources. Since the public dataset images disease in real scenes, we collected established small sample scenarios, proposed method based on YOLO v4. In order to reduce size model, MobileNet v3 used instead CSPDarknet53 as backbone network. By improving residual block, introducing depthwise separable convolution, channel pruning, effect greatly...

Amorphophallus belongs to the family Araceae and contains a high-molecular-weight polysaccharide that was originally extracted from corms called Konjac glucomannan. During past 10 years, vast body of research konjac has been published. Based on Web Science literature database, this work used Co-Occurrence, VOSviewer, SciMAT bibliometrics analysis software tools conduct analyses big data mining Jan. 2012 Dec. 2021. Therefore, present sorted development process field analyzed popular changes...

PDF HTML阅读 XML下载 导出引用 引用提醒 重铬酸钾对不同倍性泥鳅鳍细胞系的毒性效应 DOI: 作者: 作者单位: 1. 大连海洋大学 辽宁省海洋生物资源恢复与生境修复重点实验室, 辽宁 大连 116023;2. 农业部北方海水增养殖重点实验室, 116023 作者简介: 吴迪(1991-),女,硕士,专业方向为海洋生物学.E-mail:15842623565@163.com 通讯作者: 中图分类号: X171 基金项目: 国家自然科学基金项目(31272650). Toxic effects of potassium dichromate on loach fin cell lines with different ploidies in vitro Author: Affiliation: Key Laboratory Marine Bio-resource Restoration and Habitat Reparation Liaoning Province, Dalian Ocean University, 116023, China;2....