以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(d...以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(differential expressed genes,DEGs),其中上调、下调表达的基因分别有17387、18740个;在感病品种中找到44663个DEGs,其中上调、下调表达的基因分别有22928、21735个;在相同时间点抗、感品种间的R_(1) vs S_(1)、R_(2) vs S_(2)、R_(3) vs S_(3)和R_(4) vs S_(4)这4个对比组中有1057个共有DEGs。GO富集分析结果表明:甘薯长喙壳菌侵染3 d时抗、感品种中富集到的前20的GO条目均主要为细胞成分,其次为生物过程和分子调控;隶属于生物过程的单一生物代谢过程、隶属于分子功能的氧化还原酶活性和四吡咯结合,以及隶属于细胞组分的质体和细胞外围等条目在抗、感品种中均被富集到。KEGG通路富集分析结果表明:在富集的前20的KEGG信号通路中,抗、感品种中的差异基因主要被富集到代谢途径、次级代谢产物的生物合成、碳代谢、苯丙烷生物合成、柠檬酸循环/三羧酸循环以及光合作用等通路上。此外,对长喙壳菌侵染甘薯块根的抗性相关基因进行了分析,共鉴定出221个抗性相关基因,其中激酶类(kinase,KIN)基因最多,有117个,占比为52.9%。展开更多
A full-polarimetric super-resolution algorithm with spatial smoothing processing is presented for one-dimensional（1-D）radar imaging.The coherence between scattering centers is minimized by using spatial smoothing pr...A full-polarimetric super-resolution algorithm with spatial smoothing processing is presented for one-dimensional（1-D）radar imaging.The coherence between scattering centers is minimized by using spatial smoothing processing（SSP）.Then the range and polarimetric scattering matrix of the scattering centers are estimated.The impact of different lengths of the smoothing window on the imaging quality is mainly analyzed with different signal-to-noise ratios（SNR）.Simulation and experimental results show that an improved radar super-resolution range profile and more precise estimation can be obtained by adjusting the length of the smoothing window under different SNR conditions.展开更多
文摘以不侵染黑斑病菌长喙壳菌(Ceratocystis fimbriata Ellis et Halsted)的抗病甘薯品种南京92和感病品种徐薯18的薯块为对照组,以侵染时间1、3、7 d时的薯块为处理组进行转录组测序。测序结果表明:在抗病品种中找到36127个差异表达基因(differential expressed genes,DEGs),其中上调、下调表达的基因分别有17387、18740个;在感病品种中找到44663个DEGs,其中上调、下调表达的基因分别有22928、21735个;在相同时间点抗、感品种间的R_(1) vs S_(1)、R_(2) vs S_(2)、R_(3) vs S_(3)和R_(4) vs S_(4)这4个对比组中有1057个共有DEGs。GO富集分析结果表明:甘薯长喙壳菌侵染3 d时抗、感品种中富集到的前20的GO条目均主要为细胞成分,其次为生物过程和分子调控;隶属于生物过程的单一生物代谢过程、隶属于分子功能的氧化还原酶活性和四吡咯结合,以及隶属于细胞组分的质体和细胞外围等条目在抗、感品种中均被富集到。KEGG通路富集分析结果表明:在富集的前20的KEGG信号通路中,抗、感品种中的差异基因主要被富集到代谢途径、次级代谢产物的生物合成、碳代谢、苯丙烷生物合成、柠檬酸循环/三羧酸循环以及光合作用等通路上。此外,对长喙壳菌侵染甘薯块根的抗性相关基因进行了分析,共鉴定出221个抗性相关基因,其中激酶类(kinase,KIN)基因最多,有117个,占比为52.9%。
基金Supported in part by Elrha’s Humanitarian Innovation Fund programmethe National Natural Science Foundation of China(61771049)support of the Beijing Key Laboratory of Millimeter Wave and Terahertz Technology。
基金Supported by the National Naturral Science Foundation of China(61301191)
文摘A full-polarimetric super-resolution algorithm with spatial smoothing processing is presented for one-dimensional（1-D）radar imaging.The coherence between scattering centers is minimized by using spatial smoothing processing（SSP）.Then the range and polarimetric scattering matrix of the scattering centers are estimated.The impact of different lengths of the smoothing window on the imaging quality is mainly analyzed with different signal-to-noise ratios（SNR）.Simulation and experimental results show that an improved radar super-resolution range profile and more precise estimation can be obtained by adjusting the length of the smoothing window under different SNR conditions.
