针对目前复合材料抗爆容器工程设计方法合理性欠缺现状,基于轻量化思路,结合动力系数法及网格理论提出了可用于含金属内衬复合材料抗爆容器设计的“等代设计法”。采用该方法完成了内径0.5 m、抗爆当量1 kg TNT的复合材料圆筒初始设计,...针对目前复合材料抗爆容器工程设计方法合理性欠缺现状,基于轻量化思路,结合动力系数法及网格理论提出了可用于含金属内衬复合材料抗爆容器设计的“等代设计法”。采用该方法完成了内径0.5 m、抗爆当量1 kg TNT的复合材料圆筒初始设计,复合材料圆筒的面密度由等效金属圆筒的19.3 g/cm^(2)降低到3.6 g/cm^(2)。在该圆筒内部开展了炸药加载试验,结果表明圆筒设计合理,该设计方法有效,为抗爆容器的轻量化设计提供了新思路。展开更多
Drought stress impairs crop growth and development.BEL1-like family transcription factors may be involved in plant response to drought stress,but little is known of the molecular mechanism by which these proteins regu...Drought stress impairs crop growth and development.BEL1-like family transcription factors may be involved in plant response to drought stress,but little is known of the molecular mechanism by which these proteins regulate plant response and defense to drought stress.Here we show that the BEL1-like transcription factor GhBLH5-A05 functions in cotton(Gossypium hirsutum)response and defense to drought stress.Expression of GhBLH5-A05 in cotton was induced by drought stress.Overexpression of GhBLH5-A05 in both Arabidopsis and cotton increased drought tolerance,whereas silencing GhBLH5-A05 in cotton resulted in elevated sensitivity to drought stress.GhBLH5-A05 binds to cis elements in the promoters of GhRD20-A09 and GhDREB2C-D05 to activate the expression of these genes.GhBLH5-A05 interacted with the KNOX transcription factor GhKNAT6-A03.Co-expression of GhBLH5-A05 and GhKNAT6-A03 increased the transcription of GhRD20-A09 and GhDREB2C-D05.We conclude that GhBLH5-A05 acts as a regulatory factor with GhKNAT6-A03 functioning in cotton response to drought stress by activating the expression of the drought-responsive genes GhRD20-A09 and GhDREB2C-D05.展开更多
基金supported by the Project from the Ministry of Agriculture of China for Transgenic Research(2014ZX0800927B)the National Natural Science Foundation of China(31871667).
文摘Drought stress impairs crop growth and development.BEL1-like family transcription factors may be involved in plant response to drought stress,but little is known of the molecular mechanism by which these proteins regulate plant response and defense to drought stress.Here we show that the BEL1-like transcription factor GhBLH5-A05 functions in cotton(Gossypium hirsutum)response and defense to drought stress.Expression of GhBLH5-A05 in cotton was induced by drought stress.Overexpression of GhBLH5-A05 in both Arabidopsis and cotton increased drought tolerance,whereas silencing GhBLH5-A05 in cotton resulted in elevated sensitivity to drought stress.GhBLH5-A05 binds to cis elements in the promoters of GhRD20-A09 and GhDREB2C-D05 to activate the expression of these genes.GhBLH5-A05 interacted with the KNOX transcription factor GhKNAT6-A03.Co-expression of GhBLH5-A05 and GhKNAT6-A03 increased the transcription of GhRD20-A09 and GhDREB2C-D05.We conclude that GhBLH5-A05 acts as a regulatory factor with GhKNAT6-A03 functioning in cotton response to drought stress by activating the expression of the drought-responsive genes GhRD20-A09 and GhDREB2C-D05.