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APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
Drought stress typically causes heavy losses in apple production and uncovering the mechanisms by which apple tolerates drought stress is important in apple breeding. MdSIZ1 is a SUMO (small ubiquitin-like modifier) E3 ligase that promotes SUMO binding to substrate proteins. Here, we demonstrate that MdSIZ1 in apple has a negative relationship with drought tolerance. MdSIZ1 RNAi transgenic apple trees had a higher survival rate after drought stress. During drought stress they had higher leaf water potential, reduced ion leakage, lower H2O2 and malondialdehyde contents, and higher catalase activity. In addition, MdSIZ1 RNAi transgenic plants had a higher net photosynthetic rate during the latter period of drought stress. Finally, the transgenic apple trees also altered expression levels of some microRNAs in response to drought stress. Taken together, these results indicate that apple MdSIZ1 negatively regulates drought stress by enhancing leaf water-holding capacity and antioxidant enzyme activity.
APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
Baohua CHU, Jia SUN, Huan DANG, Ziqing MA, Shuang ZHAO, Qingmei GUAN, Xuewei LI
《农业科学与工程前沿(英文)》 页码 247-261 doi: 10.15302/J-FASE-2021388
APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 662-662 doi: 10.15302/J-FASE-2021408
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
Late embryogenesis abundant (LEA) genes encode highly hydrophilic proteins that are essential in abiotic stress responses. However, most LEA genes in higher plants have not yet been investigated. This study identified an LEA family gene (PtrLEA7) from Poncirus trifoliata and studied its function in drought tolerance. The full-length coding sequence of PtrLEA7 was 420 bp encoding a protein of 139 amino acids. Phylogenetic analysis shows that PtrLEA7 protein belongs to the LEA_4 subfamily. Expression profiling by qPCR found that PtrLEA7 was strongly induced by dehydration, cold and ABA treatments, and slightly induced by salt stress. Subcellular localization reveals that PtrLEA7 protein was located in both cytoplasm and nucleus. To investigate its function, transgenic plants of both tobacco and Poncirus trifoliata overexpressing PtrLEA7 were obtained. Stress tolerance assays show that overexpression lines had enhanced dehydration and drought tolerance compared with wild type plants, indicating that PtrLEA7 positively regulates drought tolerance. In addition, transgenic plants had much higher expression levels of three antioxidant enzyme genes (CAT, SOD and POD) and significantly increased catalase enzyme activity, accompanied by reduced reactive oxygen species accumulation in comparison with wild type plants. Collectively, this study demonstrates that PtrLEA7 can confer enhanced drought tolerance partially via enhancing antioxidant capacity.
《医学前沿(英文)》 2022年 第16卷 第4期 页码 627-636 doi: 10.1007/s11684-020-0815-4
关键词: RUNX1 gene mutation acute myeloid leukemia transcriptional repression DNA methylation
Influence and related mechanism of Retn gene expression on glucose uptake in 3T3-L1 cells
LI Yahui, DONG Shiyuan, YU Chao, JIANG Yu, LI Huaixing, SUN Shuhan
《医学前沿(英文)》 2007年 第1卷 第3期 页码 269-273 doi: 10.1007/s11684-007-0051-1
关键词: 3T3-L1 influence resistance receptor substrate-1 transport
MSI/LOH and extron expression of the FHIT gene in gastric carcinoma
XIAO Yuping, MAO Lili, HAN Chengbo, LI Jinyi, XU Lei, XIN Yan
《医学前沿(英文)》 2007年 第1卷 第1期 页码 99-103 doi: 10.1007/s11684-007-0019-1
Gene expression disparity in giant cell tumor of bone
Xiaohua PAN, Shuhua YANG, Deming XIAO, Yong DAI, Lili REN
《医学前沿(英文)》 2009年 第3卷 第1期 页码 49-56 doi: 10.1007/s11684-009-0012-y
Quan LI MD , Weiming LI MD , Ping ZOU MD , Jian ZHANG BM ,
《医学前沿(英文)》 2009年 第3卷 第3期 页码 309-315 doi: 10.1007/s11684-009-0043-4
关键词: graft vs host disease proteinase-activated receptor murine model hematopoietic stem cell transplantation
Construction of lentiviral vector carrying Rab9 gene and its expression in mouse brain
Youguo HAO, Min ZHANG, Jinzhi XU, Bitao BU, Jiajun WEI
《医学前沿(英文)》 2009年 第3卷 第2期 页码 141-147 doi: 10.1007/s11684-009-0041-6
Yulin LI,Deping HAN,Junying LI,Dawn KOLTES,Xuemei DENG
《农业科学与工程前沿(英文)》 2014年 第1卷 第4期 页码 299-306 doi: 10.15302/J-FASE-2014040
关键词: Silky Fowl White Leghorn melanoblast migration gene expression
Optimized human factor IX expression cassettes for hepatic-directed gene therapy of hemophilia B
null
《医学前沿(英文)》 2015年 第9卷 第1期 页码 90-99 doi: 10.1007/s11684-015-0390-2
Gene therapy provides a potential cure for hemophilia B, and significant progress has been achieved in liver-directed gene transfer mediated by adeno-associated viral vectors. Recent clinical trials involving the use of a self-complementary adeno-associated virus serotype 8-human codon-optimized factor IX (AAV8-hFIXco) vector demonstrated encouraging efficacy with hFIX expression stabilized at 1% to 6% of normal level in patients, but safety concerns related to high vector doses are still present. Thus, further improvement of AAV vectors and hFIX expression cassette may positively contribute to the ultimate success of hemophilia B gene therapy. In this study, to obtain a higher expression level of hFIX that potentiates the coagulant capacity of recipients, human FIX expression vector was optimized by upgrading the codon adaption index and adjusting the GC content, inserting a Kozak sequence (GCCACC), and introducing a gain-of-function mutation, R338L (FIX Padua). The efficiency of the published and the presently constructed cassettes was compared through in vivo screening. In addition, the regulatory elements that control the FIX gene expression in these cassettes were screened for liver-specific effectiveness. Among all the constructed cassettes, scAAV-Pre-hFIXco-SIH-R338L, which was the construct under the control of the prothrombin enhancer and prealbumin promoter, resulted in the highest level of coagulant activity, and the expression levels of two constructed cassettes (scAAV-Chi-hFIXco-SIH-R338L and scAAV-Pre-hFIXco-SIH-R338L) were also higher than that of the published cassette (scAAV-LP1-hFIXco-SJ). In summary, our strategies led to a substantial increase in hFIX expression at the protein level or a remarkably elevated coagulant activity. Thus, these reconstructs of hFIX with AAV vector may potentially contribute to the creation of an efficacious gene therapy of hemophilia B.
关键词: factor IX hemophilia B liver-specific regulatory elements hydrodynamic gene transfer
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
Ascorbic acid (AsA, vitamin C) is involved in the regulation of many aspects of plant growth and development. It is an essential micronutrient for humans and can prevent scurvy, maintain the health of gums and blood vessels, reduce the level of plasma cholesterol and enhance the immune systen. Apple cultivars Orin and Guanghui were crossed to obtain a group of hybrid offspring with and without red flesh in the course of assessing apple germplasm resources. Unexpectedly, the red-flesh apples had higher AsA contents than other apples. Further studies showed that the anthocyanin biosynthetic regulator MdMYB1 directly activates the expression of dehydroascorbate reductase gene MdDHAR, thus promoting the activity of the DHAR enzyme and the accumulation of AsA. This finding reveals the mechanism leading to high AsA levels in red-flesh apples and suggests a new idea to cultivate red-flesh apples with high AsA contents and produce AsA efficiently and without pollution.
null
《医学前沿(英文)》 2017年 第11卷 第1期 页码 137-146 doi: 10.1007/s11684-016-0486-3
This study aims to elucidate the underlying molecular mechanisms of artemisinin accumulation induced by cadmium (Cd). The effects of different Cd concentrations (0, 20, 60, and 120 μmol/L) on the biosynthesis of Artemisia annua L. were examined. Intermediate and end products were quantified by HPLC-ESI-MS/MS analysis. The expression of key biosynthesis enzymes was also determined by qRT-PCR. The results showed that the application of treatment with 60 and 120 μmol/L Cd for 3 days significantly improved the biosynthesis of artemisinic acid, arteannuin B, and artemisinin. The concentrations of artemisinic acid, arteannuin B, and artemisinin in the 120 μmol/L Cd-treated group were 2.26, 102.08, and 33.63 times higher than those in the control group, respectively. The concentrations of arteannuin B and artemisinin in 60 μmol/L Cd-treated leaves were 61.10 and 26.40 times higher than those in the control group, respectively. The relative expression levels of HMGR, FPS, ADS, CYP71AV1, DBR2, ALDH1, and DXR were up-regulated in the 120 μmol/L Cd-treated group because of increased contents of artemisinic metabolites after 3 days of treatment. Hence, appropriate doses of Cd can increase the concentrations of artemisinic metabolites at a certain time point by up-regulating the relative expression levels of key enzyme genes involved in artemisinin biosynthesis.
关键词: Cd secondary metabolites gene expressions Artemisia annua L.
Expression and bioinformatic analysis of lymphoma-associated novel gene KIAA0372
BAI Xiangyang, TANG Duozhuang, ZHU Tao, SUN Lishi, YAN Lingling, LU Yunping, ZHOU Jianfeng, MA Ding
《医学前沿(英文)》 2007年 第1卷 第1期 页码 93-98 doi: 10.1007/s11684-007-0018-2
关键词: bioinformatic analysis functional KIAA0372 detection Microarray
标题 作者 时间 类型 操作
APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
Baohua CHU, Jia SUN, Huan DANG, Ziqing MA, Shuang ZHAO, Qingmei GUAN, Xuewei LI
期刊论文
OVEREXPRESSION OF PTRLEA7, A LATE EMBRYOGENESIS ABUNDANT FAMILY GENE FROM PONCIRUS TRIFOLIATA, CONFERSENHANCED DROUGHT TOLERANCE BY ENHANCING ANTIOXIDANT CAPACITY
期刊论文
Distinct gene expression pattern of mutations coordinated by target repression and promoter hypermethylation
期刊论文
Influence and related mechanism of Retn gene expression on glucose uptake in 3T3-L1 cells
LI Yahui, DONG Shiyuan, YU Chao, JIANG Yu, LI Huaixing, SUN Shuhan
期刊论文
MSI/LOH and extron expression of the FHIT gene in gastric carcinoma
XIAO Yuping, MAO Lili, HAN Chengbo, LI Jinyi, XU Lei, XIN Yan
期刊论文
Gene expression disparity in giant cell tumor of bone
Xiaohua PAN, Shuhua YANG, Deming XIAO, Yong DAI, Lili REN
期刊论文
Gene and protein expression of proteinase-activated receptor-1, 2 in a murine model of acute graft host
Quan LI MD , Weiming LI MD , Ping ZOU MD , Jian ZHANG BM ,
期刊论文
Construction of lentiviral vector carrying Rab9 gene and its expression in mouse brain
Youguo HAO, Min ZHANG, Jinzhi XU, Bitao BU, Jiajun WEI
期刊论文
A microarray study of altered gene expression during melanoblasts migration in normal pigmented White
Yulin LI,Deping HAN,Junying LI,Dawn KOLTES,Xuemei DENG
期刊论文
Optimized human factor IX expression cassettes for hepatic-directed gene therapy of hemophilia B
null
期刊论文
THE ANTHOCYANIN BIOSYNTHETIC REGULATOR MDMYB1 POSITIVELY REGULATES ASCORBIC ACID BIOSYNTHESIS IN APPLE
期刊论文
Effects of different doses of cadmium on secondary metabolites and gene expression in Artemisia annua
null
期刊论文