Flavonoids,abundant in the fruits,are pivotal to their growth,development,and storage.In addition,they have significant beneficial effects on human health.Consequently,research is increasingly concentrating on the reg...Flavonoids,abundant in the fruits,are pivotal to their growth,development,and storage.In addition,they have significant beneficial effects on human health.Consequently,research is increasingly concentrating on the regulatory mechanisms governing flavonoid biosynthesis in fruits.Phytohormones are involved in the regulation of flavonoid biosynthesis.The abscisic acid,ethylene,jasmonic acid,cytokinins,and brassinosteroids promote flavonoid biosynthesis,while auxin negatively regulates flavonoid biosynthesis.Subsequently,transcription factors from the MYB,bHLH,WRKY,NAC,and bZIP families are pivotal in regulating flavonoid biosynthesis.In addition,non-coding RNAs(microRNA and lncRNA)also participate in the regulation of flavonoids biosynthesis.MicroRNAs are generally believed to negatively regulate flavonoid metabolism in fruits,while lncRNAs have the opposite effect.Furthermore,the interactions between plant hormones,transcription factors,and non-coding RNAs in fruit flavonoid biosynthesis were analyzed.Ultimately,a foundational regulatory network for fruit flavonoid biosynthesis was hereby established.展开更多
Super high-rise buildings are typically located in bustling urban areas.Due to their considerable height and limited construction space,numerous challenges arise during the construction process.To enhance the safety a...Super high-rise buildings are typically located in bustling urban areas.Due to their considerable height and limited construction space,numerous challenges arise during the construction process.To enhance the safety and efficiency of super highrise building construction,this paper designs an intelligent construction machine steel truss platform suitable for the core tube structure of such buildings.Numerical analyses of the designed steel truss platform were conducted during the construction,jacking,and self-climbing phases.The analysis results indicate that the strength and stiffness of the intelligent construction machine steel truss platform meet the design standards for steel structures,ensuring the overall safety and reliability of the structure.However,stress and deformation are relatively high at the connections between primary and secondary trusses,particularly in the chords and webs,as well as at the joints between truss beams and columns.To facilitate construction and improve structural safety reserves,technical and structural optimization suggestions are proposed based on the analysis results.This study provides valuable insights for the design of similar intelligent construction machine steel truss platforms in engineering projects.展开更多
基金supported by the China Agricultural Research System(Grant No.CARS-09)the Central Government Guiding Local Science and Technology Development Project(Grant No.YDZX2023029)the Gansu Planning Projects on Science and Technology(Grant No.23CXNJ0013).
文摘Flavonoids,abundant in the fruits,are pivotal to their growth,development,and storage.In addition,they have significant beneficial effects on human health.Consequently,research is increasingly concentrating on the regulatory mechanisms governing flavonoid biosynthesis in fruits.Phytohormones are involved in the regulation of flavonoid biosynthesis.The abscisic acid,ethylene,jasmonic acid,cytokinins,and brassinosteroids promote flavonoid biosynthesis,while auxin negatively regulates flavonoid biosynthesis.Subsequently,transcription factors from the MYB,bHLH,WRKY,NAC,and bZIP families are pivotal in regulating flavonoid biosynthesis.In addition,non-coding RNAs(microRNA and lncRNA)also participate in the regulation of flavonoids biosynthesis.MicroRNAs are generally believed to negatively regulate flavonoid metabolism in fruits,while lncRNAs have the opposite effect.Furthermore,the interactions between plant hormones,transcription factors,and non-coding RNAs in fruit flavonoid biosynthesis were analyzed.Ultimately,a foundational regulatory network for fruit flavonoid biosynthesis was hereby established.
基金Shaanxi Provincial Key Research and Development Program(2023JBGS-17)。
文摘Super high-rise buildings are typically located in bustling urban areas.Due to their considerable height and limited construction space,numerous challenges arise during the construction process.To enhance the safety and efficiency of super highrise building construction,this paper designs an intelligent construction machine steel truss platform suitable for the core tube structure of such buildings.Numerical analyses of the designed steel truss platform were conducted during the construction,jacking,and self-climbing phases.The analysis results indicate that the strength and stiffness of the intelligent construction machine steel truss platform meet the design standards for steel structures,ensuring the overall safety and reliability of the structure.However,stress and deformation are relatively high at the connections between primary and secondary trusses,particularly in the chords and webs,as well as at the joints between truss beams and columns.To facilitate construction and improve structural safety reserves,technical and structural optimization suggestions are proposed based on the analysis results.This study provides valuable insights for the design of similar intelligent construction machine steel truss platforms in engineering projects.
