搜索到715篇“ HYPHAE“的相关文章
Conversion of LiPSs Accelerated by Pt-Doped Biomass-Derived Hyphae Carbon Nanobelts as Self-Supporting Hosts for Long-Lifespan Li-S Batteries
2024年
Rechargeable Li-S batteries(LSBs)are emerging as an important alternative to lithium-ion batteries(LIBs),owing to their high energy densities and low cost;yet sluggish redox kinetics of LiPSs results in inferior cycle life.Herein,we prepared multifunctional self-supporting hyphae carbon nanobelt(HCNB)as hosts by carbonization of hyphae balls of Rhizopus,which could increase the S loading of the cathode without sacrificing reaction kinetics.Trace platinum(Pt)nanoparticles were introduced into HCNBs(PtHCNBs)by ion-beam sputtering deposition.Based on the X-ray photoelectron spectroscopy analyses,the introduced trace Pt regulated the local electronic states of heteroatoms in HCNBs.Electrochemical kinetics investigation combined with operando Raman measurements revealed the accelerated reaction mechanics of sulfur species.Benefiting from the synergistic catalytic effect and the unique structures,the as-prepared PtHCNB/MWNCT/S cathodes delivered a stable capacity retention of 77%for 400 cycles at 0.5 C with a sulfur loading of 4.6 mg cm^(-2).More importantly,remarkable cycling performance was achieved with an high areal S loading of 7.6 mg cm^(-2).This finding offers a new strategy to prolong the cycle life of LSBs.
Fengfeng HanLiwen FanXinzhi MaHuiqing LuLu LiXitian ZhangLili Wu
Hyphae-mediated bioassembly of carbon fibers derivatives for advanced battery energy storage被引量:1
2024年
Ingenious design and fabrication of advanced carbon-based sulfur cathodes are extremely important to the development of high-energy lithium-sulfur batteries,which hold promise as the next-generation power source.Herein,for the first time,we report a novel versatile hyphae-mediated biological assembly technology to achieve scale production of hyphae carbon fibers(HCFs)derivatives,in which different components including carbon,metal compounds,and semiconductors can be homogeneously assembled with HCFs to form composite networks.The mechanism of biological adsorption assembly is also proposed.As a representative,reduced graphene oxides(rGOs)decorated with hollow carbon spheres(HCSs)successfully co-assemble with HCFs to form HCSs@rGOs/HCFs hosts for sulfur cathodes.In this unique architecture,not only large accommodation space for sulfur but also restrained volume expansion and fast charge transport paths are realized.Meanwhile,multiscale physical barriers plus chemisorption sites are simultaneously established to anchor soluble lithium polysulfides.Accordingly,the designed HCSs@rGOs/HCFs-S cathodes deliver a high capacity(1189 mA h g^(-1)at 0.1 C)and good high-rate capability(686 mA h g^(-1)at 5 C).Our work provides a new approach for the preparation of high-performance carbon-based electrodes for energy storage devices.
Lei HuangZhong QiuPing LiuXinhui XiaFeng CaoXinping HeChen WangWangjun WanYongqi ZhangYang XiaWenkui ZhangMinghua ChenJiancang Zhou
Cytospora pyri promotes Erwinia amylovora virulence by providing metabolites and hyphae
2024年
Bacterial-fungal interactions are widespread in nature.We observed that pear orchards affected by Cytospora pyri(formerly Valsa pyri)were often accompanied with Erwinia amylovora.However,the relationship of the two pathogens was unclear.The objective of this study was to determine whether the synergistic effect exists between E.amylovora and C.pyri.We first analyzed the coexistence frequencies of E.amylovora and C.pyri in pear trees.Virulence of the two pathogens,growth,physical interactions,amylovoran production,and expression of genes for amylovoran biosynthesis were conducted.Our results showed that E.amylovora and C.pyri could coexist on the same lesion and caused much more severe disease.We also found that E.amylovora could physically attach to C.pyri and the expression of amylovoran biosynthesis genes were up-regulated with fungal metabolite treatment.These results indicate that E.amylovora and C.pyri can cooperatively interact,which provides C.pyri with an opportunity to promote bacterial dispersal and production of virulence factor in E.amylovora.
Tong ShenMengdi YeYeping XuBohan DingHongtao LiLi ZhangJun WangYanli TianBaishi HuYoufu Zhao
锌诱导对香菇菌丝生长速度及金属硫蛋白含量的影响
2024年
金属硫蛋白(Metallothionein)对镉、铜和锌等多种元素有高度亲和性,具有重金属解毒的功能。选取食用菌中的香菇(Mushrooms)作为代表菌种,在固体培养基中添加了不同浓度梯度的元素锌盐溶液,每天测定不同锌浓度作用下香菇的生长速度;培养结束,测定菌丝体内锌含量和金属硫蛋白含量。结果表明,培养环境中锌浓度越高,菌丝体内富锌量越多。通过一系列元素吸附和金属硫蛋白含量相关性分析,发现元素锌含量与香菇中金属硫蛋白含量呈正相关性,锌含量越高,金属硫蛋白含量也越高。实验结果为香菇及其他食用菌富集元素锌机理提供参考,还为食用菌安全问题的解决提供一定参考依据。
姜海云孙振英刘贵巧
关键词:香菇菌丝金属硫蛋白
双孢蘑菇As2796菌株气生与贴生菌丝遗传差异的转录组分析
2024年
【目的】挖掘双孢蘑菌落形态变化可能涉及的重要基因,为双孢蘑菇种质资源评价、新品种选育提供科学依据。【方法】以双孢蘑菇主栽品种As2796为试验菌株,收集同一平板上生长的贴生与气生菌丝,提取样品的RNA进行转录组测序分析。【结果】通过转录组分析,A601(As2796气生组)与A602(As2796贴生组)共鉴定出965个差异表达基因(DEGs)。GO富集分析结果表明,在真菌细胞壁组成方面有疏水蛋白相关的DEGs富集,其中AGABI2DRAFT_13655、AGABI2DRAFT_136569、AGABI2DRAFT_193057属于ABH3蛋白基因家族,在气生菌丝的表达水平显著高于贴生菌丝,可能与气生菌丝的产生有关。研究还发现了疏水表面结合蛋白A(HsbA)相关基因AGABI2DRAFT_194662在气生菌丝中FPKM表达水平为0,在贴生菌丝中为10.24。通过对DEGs进一步分析,富集到8个可能与脂酶同工酶相关的DEGs,气生菌丝中这些基因的表达水平显著高于贴生菌丝。SNP/InDel分析结果表明,As2796气生组SNP数为110601,贴生组SNP数为111188,单核苷酸变异中,C:G>T:A的变异次数较多,共筛选出2374个共同InDel。【结论】成功获得双孢蘑菇不同形态菌丝的转录组数据,并从中挖掘出潜在的相关基因和SNP位点,为双孢蘑菇相关分子标记开发及辅助育种提供参考。
戴建清陈文智曾志恒蔡志欣陈美元
关键词:双孢蘑菇AS2796气生菌丝差异表达基因
路德维希肠杆菌A18沿镰孢霉JK菌丝迁移的生态学效应
2024年
土壤细菌沿真菌菌丝的迁移可以扩大细菌的生境,增强其作用效果;然而,生防细菌的迁移对植物致病真菌的影响尚待深入研究.利用细菌-真菌共培养体系,研究生防细菌路德维希肠杆菌A18(Enterobacter ludwigii A18)沿植物致病真菌镰孢霉JK(Fusarium sp.JK)迁移的生态学效应.结果发现,在没有真菌菌丝存在的情况下,路德维希肠杆菌A18只能在3 g/L琼脂浓度的半固体培养基中游动,不能在更高浓度琼脂的培养基表面运动;而在镰孢霉JK存在的情况下,该细菌可以沿真菌菌丝迁移,在移动位点细菌的生物量可达108 CFU/g agar.在路德维希肠杆菌A18存在的情况下,镰孢霉JK的生长没有受到影响;然而,镰孢霉JK的产孢受到了路德维希肠杆菌A18的显著抑制,抑制率达90%.另外,路德维希肠杆菌A18可以黏附于镰孢霉JK菌丝表面形成生物膜,并利用镰孢霉JK分泌物生长,接种10 d后,路德维希肠杆菌A18的生物量从106.07±0.09 CFU/mL增加到109.07±0.10 CFU/mL.本研究表明路德维希肠杆菌A18沿镰孢霉JK菌丝迁移,不仅可以利用真菌分泌物生长,扩大其生境,而且可以抑制镰孢霉JK孢子的产生,减轻镰孢霉对农作物的危害.(图5表1参40)
杨埔王鹏然张鑫张犇张丽珍
关键词:镰孢霉迁移生防细菌
榆黄蘑菌丝生长条件优化被引量:1
2023年
为了筛选最适合榆黄蘑菌丝生长的条件,为榆黄蘑栽培利用提供技术参考,通过单因素试验及正交试验验证,以榆黄蘑(Pleurotus citrinopileatus)作为试验材料,采用PDA培养基培养菌丝,并对菌丝生长过程所需的温度、光照时间、琼脂质量浓度、pH值、碳源、氮源等条件进行优化,探索不同培养条件对榆黄蘑菌丝生长的影响。单因素试验结果表明,暗环境下菌丝转色较快;pH值越高,琼脂凝固越快;温度、琼脂质量浓度、牛肉膏质量浓度均对榆黄蘑菌丝生长的影响存在极显著差异,榆黄蘑生长最佳氮源为牛肉膏。正交试验结果表明,温度、琼脂质量浓度、牛肉膏质量浓度对榆黄蘑菌丝生长的影响顺序为温度>琼脂质量浓度>牛肉膏质量浓度。综上所述,优选组合为温度32℃,琼脂质量浓度为0.01g·mL^(-1),牛肉膏质量浓度为0.015g·mL^(-1)。
巫桂芬苏劲梁剑柳黄秋婵廖建杰苏美琪
关键词:榆黄蘑菌丝PDA正交试验
Comparison of optical properties of bioaerosols composed of microbial spores and hyphae[Invited]
2023年
Bioaerosols exhibit significant broadband extinction performance and have vital impacts on climate change,optical detection,communication,disease transmission,and the development of optical attenuation materials.Microbial spores and microbial hyphae represent two primary forms of bioaerosol particles.However,a comprehensive investigation and comparison of their optical properties have not been conducted yet.In this paper,the spectra of spores and hyphae were tested,and the absorption peaks,component contents,and protein structural differences were compared.Accurate structural models were established,and the optical attenuation parameters were calculated.Aerosol chamber experiments were conducted to verify the optical attenuation performance of microbial spores and hyphae in the mid-infrared and far-infrared spectral bands.Results demonstrate that selecting spores and hyphae can significantly reduce the average transmittance from 21.2%to 6.4%in the mid-infrared band and from 31.3%to 19.6%in the far-infrared band within three minutes.The conclusions have significant implications for the selection of high-performance microbial optical attenuation materials as well as for the rapid detection of bioaerosol types in research on climate change and the spread of pathogenic aerosols.
王新宇胡以华杨星顾有林何海浩丁婉莹王鹏
关键词:BIOAEROSOL
婴儿红斑鳞屑皮损处真菌菌丝阳性分析
2022年
目的 分析婴儿红斑鳞屑性皮损处真菌菌丝阳性情况及相关影响因素,为临床诊疗提供依据。方法 2019年4月-2020年3月采集马鞍山市妇幼保健院皮肤科门诊0~12月龄患儿红斑鳞屑性皮损处皮屑,进行荧光染剂Calcofluor White(CFW)荧光染色,高倍镜视野中发现菌丝或假菌丝,判定为阳性。采用卡方检验比较组间菌丝阳性率的差异,多因素分析采用Logistic回归分析。结果 共纳入1 579例患儿为研究对象,红斑鳞屑性皮损菌丝阳性86例,阳性率为5.45%。取材部位在颜面部(OR=0.056,95%CI:0.032~0.098)、头皮(OR=0.043,95%CI:0.010~0.183)、颈部(OR=0.128,95%CI:0.053~0.306)、躯干四肢(OR=0.046,95%CI:0.021~0.099)的菌丝阳性率低于尿布区;取材时间1~3月份(OR=0.310,95%CI:0.142~0.680)、4~6月份(OR=0.240,95%CI:0.114~0.506)、10~12月份(OR=0.471,95%CI:0.263~0.841)的阳性率低于7~9月份。分层分析发现尿布区皮损的菌丝阳性率与月龄和取材时间有关,颜面部皮损的菌丝阳性率与取材时间有关。结论 婴儿红斑鳞屑皮损处存在真菌感染可能,夏季、尿布区是真菌感染的高危因素,夏季颜面部皮损处菌丝阳性率也较高,临床医生需引起重视,针对重点人群积极采取检查措施,避免误诊。
徐建荣秦红张凡李倩云李剑
关键词:婴儿红斑鳞屑
马拉色菌菌丝阳性毛发型扁平苔癣1例
2022年
患者,男,14岁,头顶部出现红斑伴不规则脱发2年余,加重6个月。脱发区真菌免疫荧光显微镜检查:可见大量腊肠样菌丝及大量出芽孢子。真菌培养及分子生物学鉴定:球形马拉色菌。皮肤组织病理示:表皮网篮状角化;真皮浅层见噬黑素细胞,真皮深层可见胶原增生,炎细胞少见;毛囊结构消失。临床结合病理诊断:毛发扁平苔癣。口服伊曲康唑胶囊、外用酮康唑洗剂,2周后菌丝消失、孢子量减少,脱发症状减轻。
李娟娟史冬梅
关键词:马拉色菌

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