Alginate oligosaccharides(AOS)enhance drought resistance in wheat(Triticum aestivum L.),but the definite mechanisms remain largely unknown.The physiological and transcriptome responses of wheat seedlings treated with ...Alginate oligosaccharides(AOS)enhance drought resistance in wheat(Triticum aestivum L.),but the definite mechanisms remain largely unknown.The physiological and transcriptome responses of wheat seedlings treated with AOS were analyzed under drought stress simulated with polyethylene glycol-6000.The results showed that AOS promoted the growth of wheat seedlings and reduced oxidative damage by improving peroxidase and superoxide dismutase activities under drought stress.A total of 10,064 and 15,208 differentially expressed unigenes(DEGs)obtained from the AOS treatment and control samples at 24 and 72 h after dehydration,respectively,were mainly enriched in the biosynthesis of secondary metabolites(phenylpropanoid biosynthesis,flavonoid biosynthesis),carbohydrate metabolism(starch and sucrose metabolism,carbon fixation in photosynthetic organisms),lipid metabolism(fatty acid elongation,biosynthesis of unsaturated fatty acids,alpha-linolenic acid metabolism,cutin,suberine and wax biosynthesis),and signaling transduction pathways.The up-regulated genes were related to,for example,chlorophyll a-b binding protein,amylosynthease,phosphotransferase,peroxidase,phenylalanine ammonia lyase,flavone synthase,glutathione synthetase.Signaling molecules(including MAPK,plant hormones,H_(2)O_(2) and calcium)and transcription factors(mainly including NAC,MYB,MYB-related,WRKY,bZIP family members)were involved in the AOS-induced wheat drought resistance.The results obtained in this study help underpin the mechanisms of wheat drought resistance improved by AOS,and provides a theoretical basis for the application of AOS as an environmentally sustainable biological method to improve drought resistance in agriculture.展开更多
目的通过对近十年T细胞对类风湿关节炎(rheumatoid arthritis,RA)影响的文献进行多软件可视化分析,总结该领域的研究热点及前沿发展。方法在中国知网和Web of Science核心合集数据库检索2012-2022年关于T细胞对RA影响的中英文文献,运用C...目的通过对近十年T细胞对类风湿关节炎(rheumatoid arthritis,RA)影响的文献进行多软件可视化分析,总结该领域的研究热点及前沿发展。方法在中国知网和Web of Science核心合集数据库检索2012-2022年关于T细胞对RA影响的中英文文献,运用CiteSpace、VOSviewer软件对其发文量、作者、关键词进行分析。结果中文文献519篇,英文文献861篇,结果显示2020-2022年中文发文量缓慢增加,英文发文量整体趋势较为平稳。关键词分析显示,预测该领域的未来研究聚焦于T细胞在RA中的发病机制、RA的骨破坏机制、疾病活动度、氧化应激等方面。结论T细胞对RA影响的研究关注度一直较高,研究价值大。但因国内外研究重点存在差异,团队间应良性互动、相互交流,以期揭示RA的内在机制,为靶向治疗提供理论依据。展开更多
基金This research was funded and supported by the National Natural Science Foundation of China(Grant Number 32001443)Zhengzhou Major Science and Technology Innovation Project of Henan Province of China(Grant Number 2020CXZX0085)Science and Technology Inovation Team of Henan Academy of Agricultural Sciences(Grant Number 2024TD2).
文摘Alginate oligosaccharides(AOS)enhance drought resistance in wheat(Triticum aestivum L.),but the definite mechanisms remain largely unknown.The physiological and transcriptome responses of wheat seedlings treated with AOS were analyzed under drought stress simulated with polyethylene glycol-6000.The results showed that AOS promoted the growth of wheat seedlings and reduced oxidative damage by improving peroxidase and superoxide dismutase activities under drought stress.A total of 10,064 and 15,208 differentially expressed unigenes(DEGs)obtained from the AOS treatment and control samples at 24 and 72 h after dehydration,respectively,were mainly enriched in the biosynthesis of secondary metabolites(phenylpropanoid biosynthesis,flavonoid biosynthesis),carbohydrate metabolism(starch and sucrose metabolism,carbon fixation in photosynthetic organisms),lipid metabolism(fatty acid elongation,biosynthesis of unsaturated fatty acids,alpha-linolenic acid metabolism,cutin,suberine and wax biosynthesis),and signaling transduction pathways.The up-regulated genes were related to,for example,chlorophyll a-b binding protein,amylosynthease,phosphotransferase,peroxidase,phenylalanine ammonia lyase,flavone synthase,glutathione synthetase.Signaling molecules(including MAPK,plant hormones,H_(2)O_(2) and calcium)and transcription factors(mainly including NAC,MYB,MYB-related,WRKY,bZIP family members)were involved in the AOS-induced wheat drought resistance.The results obtained in this study help underpin the mechanisms of wheat drought resistance improved by AOS,and provides a theoretical basis for the application of AOS as an environmentally sustainable biological method to improve drought resistance in agriculture.
文摘目的通过对近十年T细胞对类风湿关节炎(rheumatoid arthritis,RA)影响的文献进行多软件可视化分析,总结该领域的研究热点及前沿发展。方法在中国知网和Web of Science核心合集数据库检索2012-2022年关于T细胞对RA影响的中英文文献,运用CiteSpace、VOSviewer软件对其发文量、作者、关键词进行分析。结果中文文献519篇,英文文献861篇,结果显示2020-2022年中文发文量缓慢增加,英文发文量整体趋势较为平稳。关键词分析显示,预测该领域的未来研究聚焦于T细胞在RA中的发病机制、RA的骨破坏机制、疾病活动度、氧化应激等方面。结论T细胞对RA影响的研究关注度一直较高,研究价值大。但因国内外研究重点存在差异,团队间应良性互动、相互交流,以期揭示RA的内在机制,为靶向治疗提供理论依据。