Mitochondrial dynamics caused by QoIs and SDHIs fungicides depended on FgDnm1 in Fusarium graminearum

Fusarium head blight(FHB) caused by Fusarium graminearum is a devastating fungal disease on small grain cereal crops,because it reduces yield and quality and causes the mycotoxin contamination to the grain.Dynamins and dynamin-related proteins(DRPs) are large GTPase superfamily members,which are typically involved in the budding and division of vesicles in eukaryotic cells,but their roles in Fusarium spp.remain unexplored.Here,we found that FgDnm1,a DRP and homolog to Dnm1 in Saccharomyces cerevisiae,contributes to the normal fungal growth,sexual reproduction and sensitivity to fungicides.In addition,we found FgDnm1 co-localizes with mitochondria and is involved in toxisome formation and deoxynivalenol(DON) production.Several quinone outside inhibitors(QoIs) and succinate dehydrogenase inhibitors(SDHIs) cause fragmentated morphology of mitochondria.Importantly,the deletion of FgDnm1displays filamentous mitochondria and blocks the mitochondrial fragmentation induced by QoIs and SDHIs.Taken together,our studies uncover the effect of mitochondrial dynamics in fungal normal growth and how such events link to fungicides sensitivity and toxisome formation.Thus,we concluded that altered mitochondrial morphology induced by QoIs and SDHIs depends on FgDnm1.

电解铜箔黑化用电镀钴–锌合金工艺

采用硫酸盐钴–锌合金镀液对电解铜箔进行电镀黑化处理。研究了镀液中钴离子、锌离子和黑化剂(由硫氰酸钾、柠檬酸、乙醇酸等组成)的含量以及工艺参数对镀层颜色的影响。得到最优的钴–锌合金电镀工艺为:Co^(2+)6 g/L,Zn^(2+)0.4～0.6 g/L,黑化剂50 m L/L,p H=1.5～1.9,温度40°C,电流密度10 A/dm^2,时间8 s。经该工艺处理的铜箔的L~*为28.9,具有良好的结合力和蚀刻性。

高寒地区露地西葫芦新品种适应性筛选

为了筛选适宜互助县冷凉气候露地条件下丰产优质的西葫芦品种,对10个西葫芦品种(杂交组合)的生物学特性、果实特性、抗病性及经济性状等进行比较分析,结果表明翠绿色表皮品种京葫30号和墨绿色表皮组合048的综合表现优良,可作为互助县露地栽培用主栽品种。