The co-chaperone DnaJ plays an important role in protein folding and regulation of various physiological activities, and participates in several pathological processes. DnaJ has been extensively studied in many specie...The co-chaperone DnaJ plays an important role in protein folding and regulation of various physiological activities, and participates in several pathological processes. DnaJ has been extensively studied in many species including humans,drosophila, mushrooms, tomatoes, and Arabidopsis. However, few studies have examined the role of DnaJ in wheat(Triticum aestivum), and the interaction mechanism between TaDnaJs and plant viruses. Here, we identified 236 TaDnaJs and performed a comprehensive genome-wide analysis of conserved domains, gene structure and protein motifs, chromosomal positions and duplication relationships, and cis-acting elements. We grouped these Ta Dna Js according to their domains, and randomly selected six genes from the groups for tissue-specific analysis, and expression profiles analysis under hormone stress, and 17 genes for plant virus infection stress. In qRT-PCR, we found that among the 17 TaDnaJ genes tested, 16 genes were up-regulated after wheat yellow mosaic virus(WYMV) infection, indicating that the TaDnaJ family is involved in plant defense response. Subsequent yeast two-hybrid assays verified the WYMV NIa, NIb and 7 KD proteins interacted with TaDJC(TraesCS7 A02 G506000), which had the most significant changes in gene expression levels after WYMV infection.Insights into the molecular mechanisms of Ta Dna J-mediated stress tolerance and sensitivity could inform different strategies designed to improve crop resistance to abiotic and biotic stress. This study provides a basis for future investigation of the TaDnaJ family and plant defense mechanisms.展开更多
Second—order nonlinear optical(NLO)polymeric matedals have been extensively studied for more than one decade because of their potential applications in integrated optical signal processing⋯.To optimize the comprehens...Second—order nonlinear optical(NLO)polymeric matedals have been extensively studied for more than one decade because of their potential applications in integrated optical signal processing⋯.To optimize the comprehensive properties of this type of materials,several polymer systems,such as vip—host polymers,side.chain polymers,main—chain polymers an d crosslinked polymers combined with NLO chromophores in diferent architecture have been investigated Among them,high chromophore density an d improved orientation stability are obtainable in polymer systems with the majority of chromophores。展开更多
基金supported by the National Key R&D Program of China(2018YFD0200507,2017YFD-0201701,and 2018YFD0200408)the National Natural Science Foundation of China(31901954)+3 种基金the Natural Science Foundation of Ningbo City,China(2019A610415 and 2019A610410)the National Key Project for Research on Transgenic Biology,China(2016ZX08002-001)the China Modern Agricultural Industry Technology System of MOF and MARA(CARS-03)the K.C.Wong Magna Funding in Ningbo University,China。
文摘The co-chaperone DnaJ plays an important role in protein folding and regulation of various physiological activities, and participates in several pathological processes. DnaJ has been extensively studied in many species including humans,drosophila, mushrooms, tomatoes, and Arabidopsis. However, few studies have examined the role of DnaJ in wheat(Triticum aestivum), and the interaction mechanism between TaDnaJs and plant viruses. Here, we identified 236 TaDnaJs and performed a comprehensive genome-wide analysis of conserved domains, gene structure and protein motifs, chromosomal positions and duplication relationships, and cis-acting elements. We grouped these Ta Dna Js according to their domains, and randomly selected six genes from the groups for tissue-specific analysis, and expression profiles analysis under hormone stress, and 17 genes for plant virus infection stress. In qRT-PCR, we found that among the 17 TaDnaJ genes tested, 16 genes were up-regulated after wheat yellow mosaic virus(WYMV) infection, indicating that the TaDnaJ family is involved in plant defense response. Subsequent yeast two-hybrid assays verified the WYMV NIa, NIb and 7 KD proteins interacted with TaDJC(TraesCS7 A02 G506000), which had the most significant changes in gene expression levels after WYMV infection.Insights into the molecular mechanisms of Ta Dna J-mediated stress tolerance and sensitivity could inform different strategies designed to improve crop resistance to abiotic and biotic stress. This study provides a basis for future investigation of the TaDnaJ family and plant defense mechanisms.
基金the National Science Foundation of China(No.29774018)for Financial Support
文摘Second—order nonlinear optical(NLO)polymeric matedals have been extensively studied for more than one decade because of their potential applications in integrated optical signal processing⋯.To optimize the comprehensive properties of this type of materials,several polymer systems,such as vip—host polymers,side.chain polymers,main—chain polymers an d crosslinked polymers combined with NLO chromophores in diferent architecture have been investigated Among them,high chromophore density an d improved orientation stability are obtainable in polymer systems with the majority of chromophores。
