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        Genome-wide identification and resistance expression analysis of the NBS gene family in Triticum urartu

        Jing Liu,Linyi Qiao,Xiaojun Zhang,Xin Li,Haixian Zhan,Huijuan Guo,Jun Zheng,Zhijian Chang 한국유전학회 2017 Genes & Genomics Vol.39 No.6

        As the largest class of resistant genes, the nucleotide binding site (NBS) has been studied extensively at a genome-wide level in rice, sorghum, maize, barley and hexaploid wheat. However, no such comprehensive analysis has been conducted of the NBS gene family in Triticum urartu, the donor of the A genome to the common wheat. Using a bioinformatics method, 463 NBS genes were isolated from the whole genome of T. urartu, of which 461 had location information. The expansion pattern and evolution of the 461 NBS candidate proteins were analyzed, and 118 of them were duplicated. By calculating the lengths of the copies, it was inferred that the NBS resistance gene family of T. urartu has experienced at least two duplication events. Expression analysis based on RNA-seq data found that 6 genes were differentially expressed among Tu38, Tu138 and Tu158 in response to Blumeria graminis f.sp.tritici (Bgt). Following Bgt infection, the expression levels of these genes were up-regulated. These results provide critical references for further identification and analysis of NBS family genes with important functions.

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        New Insights into Calorie Restriction Induced Bone Loss

        Clifford J. Rosen,Linyi Liu 대한내분비학회 2023 Endocrinology and metabolism Vol.38 No.2

        Caloric restriction (CR) is now a popular lifestyle choice due to its ability in experimental animals to improve lifespan, reduce bodyweight, and lessen oxidative stress. However, more and more emerging evidence suggests this treatment requires careful consideration because of its detrimental effects on the skeletal system. Experimental and clinical studies show that CR can suppress bonegrowth and raise the risk of fracture, but the specific mechanisms are poorly understood. Reduced mechanical loading has long beenthought to be the primary cause of weight loss-induced bone loss from calorie restriction. Despite fat loss in peripheral depots withcalorie restriction, bone marrow adipose tissue (BMAT) increases, and this may play a significant role in this pathological process. Here, we update recent advances in our understanding of the effects of CR on the skeleton, the possible pathogenic role of BMAT inCR-induced bone loss, and some strategies to mitigate any potential side effects on the skeletal system.

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