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OsBAK1 is involved in rice resistance to Xanthomonas oryzae pv. oryzae PXO99
Hualan Liao,Xiaorong Xiao,Xiuqiong Li,Yan Chen,Xiumei Fu,Daozhe Lin,Xiaolei Niu,Yinhua Chen,Chaozu He 한국식물생명공학회 2016 Plant biotechnology reports Vol.10 No.2
OsBAK1 gene belongs to a receptor like kinase gene family in rice and shares a highly conserved gene structure and sequence homology with Arabidopsis thaliana BAK1 gene. To investigate the role of OsBAK1 in rice immunity, the full-length cDNA of OsBAK1 was isolated by RT-PCR and the transgenic rice lines (over expression and RNA-interference lines) were generated using Agrobacterium-mediated transformation. The expression level of OsBAK1 was determined by q-PCR in overexpression and RNAi transgenic rice lines. Based on quantitative polymerase chain reaction (q-PCR) results, two overexpression lines and two RNAi lines were evaluated in bioassays for resistance to Xanthomonas oryzae pv. oryzae PXO99, the causal agent of rice bacterial blight disease. Pathogenicity bioassays showed overexpression OsBAK1 lines exhibited resistance to blight disease whereas OsBAK1 RNAi lines promoted susceptibility. Besides, OsBAK1 can complement the function of AtBAK1 in Arabidopsis bak1 protoplast, activating FRK1 expression, a marker gene in PTI signaling pathway, after treatment by flg22. Furthermore, the transcriptional level of OsBAK1 was induced significantly in rice by defense signaling molecules such as salicylic acid, jasmonic acid, and PXO99 inoculation. Our results illustrated OsBAK1 positively regulates plant defense against rice bacterium pathogen Xanthomonas oryzae pv. oryzae PXO99.
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A Correlation Evaluation Method of PV Power Output Based on ITOPSIS
Xia Weiyi,Ren Zhouyang,Li Hui,Song Yue,Hu Xiuqiong,Hu Bo 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.4
Based on the Improved Technique for Order Preference by Similarity to an Ideal Solution (ITOPSIS), an evaluation method is proposed to quantify the contribution of each photovoltaic (PV) plant on the randomness and sequential characteristics of regional PV power. It can provide valuable information for the operators and planners of power systems, as well as the dealers in electricity market. First, a correlation index system is constructed to evaluate the correlation between the power outputs of individual PV plants and the regional PV power. Next, ITOPSIS is proposed to synthesize the proposed indices. Group standardization and theoretical optimal value avert the decrease of diff erence between plants and make the results applicable for comparing correlations in diff erent cluster. The historical data collected from 16 PV plants were used to verify the eff ectiveness and correctness of the proposed method
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Qi Yang,Yu Zhong,Xiaoming Li,Xin Li,Kun Luo,Xiuqiong Wu,Hongbo Chen,Yang Liu,Guangming Zeng 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.28 No.-
In this study, the bromate removal was investigated in continuous fixed-bed column using Fe(II)–Al(III)layered double hydroxide (LDH). With increase of column bed depth from 1.0 to 3.0 cm, breakpoint time(tb) increased from 51 to 175 h while throughput volume raised from 12.24 to 42.00 L at breakthroughpoint. The bromate removal was attributed to the reduction of Fe(II) present in LDH. The breakthroughcurve was simulated well by Thomas model, but BDST model was the only effective to initial part(1–10%). The maximum removal capacity (N0) calculated by Thomas model reached 71.01 mmol/g atflow rate (3 mL/min).
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Ying-Jie Chen,Jia-Ying Wu,Yu-Yi Deng,Ying Wu,Xiao-Qi Wang,Amy Sze-man Li,Lut Yi Wong,Xiuqiong Fu,Zhi-Ling Yu,Chun Liang 고려인삼학회 2022 Journal of Ginseng Research Vol.46 No.3
Sorafenib is effective in treating hepatoma, but most patients develop resistance to it. STAT3signaling has been implicated in sorafenib resistance. Artesunate (ART) and 20(R)-ginsenoside Rg3 (Rg3)have anti-hepatoma effects and can inhibit STAT3 signaling in cancer cells. This study aimed to evaluatethe effects of Rg3 in combination with ART (Rg3-plus-ART) in overcoming sorafenib resistance, and toexamine the involvement of STAT3 signaling in these effects. Methods: Sorafenib-resistant HepG2 cells (HepG2-SR) were used to evaluate the in vitro anti-hepatomaeffects of Rg3-plus-ART. A HepG2-SR hepatoma-bearing BALB/c-nu/nu mouse model was used to assessthe in vivo anti-hepatoma effects of Rg3-plus-ART. CCK-8 assays and Annexin V-FITC/PI double stainingwere used to examine cell proliferation and apoptosis, respectively. Immunoblotting was employed toexamine protein levels. ROS generation was examined by measuring DCF-DA fluorescence. Results: Rg3-plus-ART synergistically reduced viability of, and evoked apoptosis in HepG2-SR cells, andsuppressed HepG2-SR tumor growth in mice. Mechanistic studies revealed that Rg3-plus-ART inhibitedactivation/phosphorylation of Src and STAT3 in HepG2-SR cultures and tumors. The combination alsodecreased the STAT3 nuclear level and induced ROS production in HepG2-SR cultures. Furthermore, overactivation of STAT3 or removal of ROS diminished the anti-proliferative effects of Rg3-plus-ART, andremoval of ROS diminished Rg3-plus-ART's inhibitory effects on STAT3 activation in HepG2-SR cells. Conclusions: Rg3-plus-ART overcomes sorafenib resistance in experimental models, and inhibition of Src/STAT3 signaling and modulation of ROS/STAT3 signaling contribute to the underlying mechanisms. Thisstudy provides a pharmacological basis for developing Rg3-plus-ART into a novel modality for treatingsorafenib-resistant hepatoma.
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