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RISS 인기검색어
- 검색키워드
- 저자 : Dekang Zhu (검색결과 3 건)
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miR167c is Induced by High Alkaline Stress and Inhibits Two Auxin Response Factors in Glycine soja
Dekang Lv,Ying Ge,Bei Jia,Xi Bai,Peihua Bao,Hua Cai,Wei Ji,Yanming Zhu 한국식물학회 2012 Journal of Plant Biology Vol.55 No.5
Soil alkalinity is one of the major environmental factors limiting crop productivity worldwide. MicroRNAs (miRNAs) are small (21-25 nucleotides) single-stranded non-coding RNAs that regulate developmental and stress responses in plants by cleaving target mRNAs. However,little is known about the role of miRNAs in the response to alkaline stress. In this study, we identified the miR167c as a high alkaline-responsive miRNAs in wild soybean based on genome microarray and RNA gel blot. The presence of a cisacting abscisic acid (ABA) responsive element (ABRE) in the upstream region and the ABA inducement of primiR167c suggested that miR167c might be regulated by ABA. We also showed that two auxin response factors (ARF),Gs14g03650 and Gs18g05330, were target genes of the alkaline-inducible miR167c and rapidly down-regulated following alkaline treatment. Our results reveal that miR167c regulated the expression pattern of ARFs, which could be vital for both development and stress adaptation.
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Apoptosis induced in vivo by new type gosling viral enteritis virus
Shun Chen,Anchun Cheng,Mingshu Wang,Dekang Zhu,Renyong Jia,Qihui Luo,Hengmin Cui,Yi Zhou,Yin Wang,Zhiwen Xu,Zhengli Chen,Xiaoyue Chen,Xiaoyu Wang 대한수의학회 2011 JOURNAL OF VETERINARY SCIENCE Vol.12 No.4
In this study, apoptosis was induced by new type gosling viral enteritis virus (NGVEV) in experimentally infected goslings is reported in detail for the first time. After 3-day-old goslings were orally inoculated with a NGVEV-CN strain suspension, the time course of NGVEV effects on apoptotic morphological changes of the internal tissues was evaluated. These changes were observed by histological analysis with light microscopy and ultrastructural analysis with transmission electron microscopy. DNA fragmentation was assessed with a terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling (TUNEL) assay and DNA ladder analysis. A series of characteristic apoptotic morphological changes including chromatin condensation and margination, cytoplasmic shrinkage, plasma membrane blebbing, and formation of apoptotic bodies were noted. Apoptosis was readily observed in the lymphoid and gastrointestinal organs, and sporadically occurred in other organs after 3 days post-infection (PI). The presence and quantity of TUNEL-positive cells increased with infection time until 9 days PI. DNA extracted from the NGVEV-infected gosling cells displayed characteristic 180~200 bp ladders. Apoptotic cells were ubiquitously distributed, especially among lymphocytes, macrophages, monocytes, and epithelial and intestinal cells. Necrosis was subsequently detected during the late NGVEV-infection phase, which was characterized by cell swelling, plasma membrane collapse, and rapidly lysis. Our results suggested that apoptosis may play an important role in the pathogenesis of NGVE disease.
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Meng Lin,Renyong Jia,Mingshu Wang,Xinghong Gao,Dekang Zhu,Shun Chen,Mafeng Liu,Zhongqiong Yin,Yin Wang,Xiaoyue Chen,Anchun Cheng 대한수의학회 2014 JOURNAL OF VETERINARY SCIENCE Vol.15 No.3
The UL49.5 gene of most herpesviruses is conserved andencodes glycoprotein N. However, the UL49.5 protein ofduck enteritis virus (DEV) (pUL49.5) has not been reported. In the current study, the DEV pUL49.5 gene was firstsubjected to molecular characterization. To verify thepredicted intracellular localization of gene expression, therecombinant plasmid pEGFP-C1/pUL49.5 was constructedand used to transfect duck embryo fibroblasts. Next, therecombinant plasmid pDsRed1-N1/ glycoprotein M (gM)was produced and used for co-transfection with thepEGFP-C1/pUL49.5 plasmid to determine whether DEVpUL49.5 and gM (a conserved protein in herpesviruses)colocalize. DEV pUL49.5 was thought to be an envelopeglycoprotein with a signal peptide and two transmembranedomains. This protein was also predicted to localize in thecytoplasm and endoplasmic reticulum with a probability of66.7%. Images taken by a fluorescence microscope atdifferent time points revealed that the DEV pUL49.5 andgM proteins were both expressed in the cytoplasm. Overlapof the two different fluorescence signals appeared 12 h aftertransfection and continued to persist until the end of theexperiment. These data indicate a possible interaction between DEV pUL49.5 and gM.
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