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1Effects of citrus tree-shape and spraying height of small unmanned aerial vehicle on droplet distribution显示文摘In order to explore the droplet penetration of spraying with unmanned aerial vehicle(UAV)on citrus trees with different shapes,the tests were carried out at different working heights.The material was five years old Cocktail grapefruit(Citrus paradisi cv.Cocktail)grafted on Trafoliata(Poncirus trifoliata L.Raf.)and the type of UAV sprayer used was the 3W-LWS-Q60S.A solution of 300 times Ponceau 2R diluents liquid instead of pesticide was used for citrus fields spraying and the droplets were collected by paper cards.Droplets deposition parameters were extracted and analyzed using digital image processing after scanning the cards.The results showed that:1)For the trees with round head shape canopy,the droplet depositions of the upper,middle and lower layers had a significant difference at 0.05 level.The droplet deposition had the best effect when the working height was 1.0 m,where the average droplet deposition densities were 39.97 droplets/cm2 and the average droplet size was 0.30 mm,but the droplet coverage(3.19%)was lower than that at the working height of 1.5 m(4.27%).2)Under three different working heights of UAV,the tree with open center shape can obtain higher droplet deposition density at all three layers than that with the round head shape canopy.It was especially prominent when the working height was 1.0 m,as the middle layer increased by 49.92%.However,the higher range of droplet deposition density meant larger fluctuation and dispersion.3)The open center shape canopy and the 1.0 m working height obviously improved the droplet coverage rate and droplet density in the citrus plant.For these parameters of open center shape citrus tree,there was no obvious difference in the front and rear direction,but in the left and middle part of the tree crown,the difference reached a 0.05 significant level.Considering droplet deposition characteristics and the spray uniformity,the UAV performed better when working on open center shape plants at a 1.0 m working height.Zhang Pan Deng Lie Lyu Qiang He Shaolan Yi Shilai Liu Yande Yu Yongxu Pan Haiyang 2016International Journal of Agricultural and Biological Engineering2016,9,4:37
2PRMT5 regulates Golgi apparatus structure through methylation of the golgin GM130显示文摘Golgi 仪器(GA ) 的维护结构和功能取决于 Golgi 矩阵蛋白质。象 golgin 和掌握家庭的成员的 phosphorylation 那样的 Golgi 蛋白质的 posttranslational 修正为决定 Golgi 建筑学是重要的。包括 golgin-84 的一些 Golgi 蛋白质也被知道是 methylated,但是 golgin methylation 的功能仍然保持不清楚。这里,我们证明蛋白质精氨酸 methyltransferase (PRMT5 ) 5 本地化到 GA 和形式建筑群,几个部件在拴住的 GA 带子形成和泡包含了。PRMT5 在 Golgi 带子形成与 PRMT5 原因缺点的 golgin GM130,和弄空交往。而且,在 GM130 的 PRMT5 甲醇化物 N 终端精氨酸,和如此的精氨酸 methylation 为 GA 显得批评带子形成。我们的调查结果揭示 GM130 的 PRMT5 依赖的精氨酸 methylation 由控制 GA 建筑学的维护的分子的机制。Zhongwei Zhou Xiaotian Sun Zhenhua Zou Litao Sun Tao Zhang Shaoshi Guo Ya Wen Lin Liu Yi Wang Jun Qin Lei Li Weimin Gong Shilai Bao 2010Cell Research2010,20,9:16
3De novo assembly of a Chinese soybean genome显示文摘Soybean was domesticated in China and has become one of the most important oilseed crops. Due to bottlenecks in their introduction and dissemination, soybeans from different geographic areas exhibit extensive genetic diversity. Asia is the largest soybean market; therefore, a high-quality soybean reference genome from this area is critical for soybean research and breeding.Here, we report the de novo assembly and sequence analysis of a Chinese soybean genome for 'Zhonghuang 13' by a combination of SMRT, Hi-C and optical mapping data. The assembled genome size is 1.025 Gb with a contig N50 of 3.46 Mb and a scaffold N50 of 51.87 Mb. Comparisons between this genome and the previously reported reference genome(cv. Williams82) uncovered more than 250,000 structure variations. A total of 52,051 protein coding genes and 36,429 transposable elements were annotated for this genome, and a gene co-expression network including 39,967 genes was also established. This high quality Chinese soybean genome and its sequence analysis will provide valuable information for soybean improvement in the future.Yanting Shen Jing Liu Haiying Geng Jixiang Zhang Yucheng Liu Haikuan Zhang Shilai Xing Jianchang Du Shisong Ma Zhixi Tian 2018Science China(Life Sciences)2018,61,8:11
4Developing superior alleles of yield genes in rice by artificial mutagenesis using the CRISPR/Cas9 system显示文摘Rice yield is an important and complex agronomic trait controlled by multiple genes.In recent decades,dozens of yield-associated genes in rice have been cloned,many of which can increase production in the form of loss or degeneration of function.However,mutations occurring randomly under natural conditions have provided very limited genetic resources for yield increases.In this study,potentially yield-increasing alleles of two genes closely associated with yield were edited artificially.The recently developed CRISPR/Cas9system was used to edit two yield genes:Grain number 1a(Gn1a)and DENSE AND ERECT PANICLE1(DEP1).Several mutants were identified by a target sequence analysis.Phenotypic analysis confirmed one mutant allele of Gn1a and three of DEP1 conferring yield superior to that conferred by other natural high-yield alleles.Our results demonstrate that favorable alleles of the Gnla and DEP1 genes,which are considered key factors in rice yield increases,could be developed by artificial mutagenesis using genome editing technology.Liyu Huang Ru Zhang Guangfu Huang Yanxia Li Getachew Melaku Shilai Zhang Haitao Chen Yanjuan Zhao Jing Zhang Yesheng Zhang Fengyi Hu 2018The Crop Journal2018,6,5:8
5Prediction of nitrogen and phosphorus contents in citrus leaves based on hyperspectral imaging显示文摘The nutritional status of citrus leaves is very important to the determining of fertilization plans.The spectrum technique is a quick,un-injured method and is becoming widely used for plant nutrient estimation.The possibility and method of using spectrum technique to estimate the nutrient of citrus leaf was explored in this study.A total amount of 135 leaves from the mature spring shoots of navel orange trees(C.sinensis Osbeck,“Newhall”)were collected and randomly grouped into two sets of samples:100 leaves for the calibration set and 35 leaves for the prediction set.The hyperspectral images were scanned upper and lower side of each leaf and then the total nitrogen(N)and phosphorus(P)contents of each leaf were measured.The raw spectra data were extracted to generate average spectra curves,preprocessed with five different methods,and was used to build N and P content prediction models.The performances of the five preprocessing methods,i.e.,Savitzky-Golay smoothing(SGS),standard normal variate(SNV),multiplicative scatter correction(MSC),first-derivative(1-Der)and second-derivative(2-Der),were tested with linear partial least squares(PLS)models and nonlinear least squares-support vector machine(LS-SVM)models.The results showed that the SG-PLS and PLS were the best for the N predicting(Rp=0.9049,RMSEP=0.1041)and P(Rp=0.9235,RMSEP=0.0514)in citrus leaves,respectively;the hyperspectral image data from leaf‟s upper side predicting better for the contents of N and P.The study suggested that the hyperspectral image data from the upper side of the citrus leaves are suitable for nondestructive estimation of nutrient content.Liu Yanli Lyu Qiang He Shaolan Yi Shilai Liu Xuefeng Xie Rangjin Zheng Yongqiang Deng Lie 2015International Journal of Agricultural and Biological Engineering2015,8,2:5
6Nondestructive determining the soluble solids content of citrus using near infrared transmittance technology combined with the variable selection algorithm显示文摘Nondestructive determination the internal quality of thick-skin fruits has always been a challenge.In order to investigate the prediction ability of full transmittance mode on the soluble solid content(SSC)in thick-skin fruits,the full transmittance spectra of citrus were collected using a visible/near infrared(Vis/NIR)portable spectrograph(550–1100 nm).Three obvious absorption peakswere found at 710,810 and 915 nmin the original spectra curve.Four spectral preprocessing methods including Smoothing,multiplicative scatter correction(MSC),standard normal variate(SNV)and first derivativewere employed to improve the quality of the original spectra.Subsequently,the effective wavelengths of SSC were selected from the original and pretreated spectra with the algorithms of successive projections algorithm(SPA),competitive adaptive reweighted sampling(CARS)and genetic algorithm(GA).Finally,the prediction models of SSC were established based on the full wavelengths and effectivewavelengths.Results showed that SPA performed the best performance on eliminating the useless information variable and optimizing the number of effective variables.The optimal predictionmodel was established based on 10 characteristic variables selected from the spectra pretreated by SNV with the algorithmof SPA,with the correlation coefficient,root mean square error,and residual predictive deviation for prediction set being 0.9165,0.5684°Brix and 2.5120,respectively.Overall,the full transmittance mode was feasible to predict the internal quality of thick-skin fruits,like citrus.Additionally,the combination of spectral preprocessing with a variable selection algorithmwas effective for developing the reliable predictionmodel.The conclusions of this study also provide an alternative method for fast and real-time detection of the internal quality of thick-skin fruits using Vis/NIR spectroscopy.Xi Tian Jiangbo Li Shilai Yi Guoqiang Jin Xiaoying Qiu Yongjie Li 2020Artificial Intelligence in Agriculture2020,,1:5
7Detection of Huanglongbing(citrus greening) based on hyperspectral image analysis and PCR显示文摘Huanglongbing (HLB, citrus greening) is one of the most serious quarantine diseases of citrus worldwide. To monitor in real-time, recognize diseased trees, and efficiently prevent and control HLB disease in citrus, it is necessary to develop a rapid diagnostic method to detect HLB infected plants without symptoms. This study used Newhall navel orange plants as the research subject, and collected normal color leaf samples and chlorotic leaf samples from a healthy orchard and an HLB-infected orchard, respectively. First, hyperspectral data of the upper and lower leaf surfaces were obtained, and then the polymerase chain reaction (PCR) was used to detect the HLB bacterium in each leaf. The PCR test results showed that all samples from the healthy orchard were negative, and a portion of the samples from the infected orchard were positive. According to these results, the leaf samples from the orchards were divided into disease-free leaves and HLB-positive leaves, and the least squares support vector machine recognition model was established based on the leaf hyperspectral reflectance. The effect on the model of the spectra obtained from the upper and lower leaf surfaces was investigated and different pretreatment methods were compared and analyzed. It was observed that the HLB recognition rate values of the calibration and validation sets based on upper leaf surface spectra under 9-point smoothing pretreatment were 100% and 92.5%, respectively. The recognition rate values based on lower leaf surface spectra under the second-order derivative pretreatment were also 100% and 92.5%, respectively. Both upper and lower leaf surface spectra were available for recognition of HLB-infected leaves, and the HLB PCR-positive leaves could be distinguished from the healthy by the hyperspectral modeling analysis. The results of this study show that early and nondestructive detection of HLBinfected leaves without symptoms is possible, which provides a basis for the hyperspectral diagnosis of citrus with HLB.Kejian WANG Dongmei GUO Yao ZHANG Lie DENG Rangjin XIE Qiang LV Shilai YI Yongqiang ZHENG Yanyan MA Shaolan HE 2019Frontiers of Agricultural Science and Engineering2019,6,2:3
8The tea plant CsLHT1 and CsLHT6 transporters take up amino acids, as a nitrogen source, from the soil of organic tea plantations显示文摘Organic tea is more popular than conventional tea that originates from fertilized plants.Amino acids inorganic soils constitute a substantial pool nitrogen(N)available for plants.However,the amino-acid contents in soils of tea plantations and how tea plants take up these amino acids remain largely unknown.In this study,we show that the amino-acid content in the soil of an organic tea plantation is significantly higher than that of a conventional tea plantation.Glutamate,alanine,valine,and leucine were the most abundant amino acids in the soil of this tea plantation.When 15 N-glutamate was fed to tea plants,it was efficiently absorbed and significantly increased the contents of other amino acids in the roots.We cloned seven CsLHT genes encoding amino-acid transporters and found that the expression of CsLHT1,CsLHT2,and CsLHT6 in the roots significantly increased upon glutamate feeding.Moreover,the expression of CsLHT1 or CsLHT6 in a yeast amino-acid uptake-defective mutant,22Δ10α,enabled growth on media with amino acids constituting the sole N source.Amino-acid uptake assays indicated that CsLHT1 and CsLHT6 are H^(+)-dependent high-and low-affinity amino-acid transporters,respectively.We further demonstrated that CsLHT1 and CsLHT6 are highly expressed in the roots and are localized to the plasma membrane.Moreover,overexpression of CsLHT1 and CsLHT6 in Arabidopsis significantly improved the uptake of exogenously supplied 15 N-glutamate and 15 N-glutamine.Taken together,our findings are consistent with the involvement of CsLHT1 and CsLHT6 in amino-acid uptake from the soil,which is particularly important for tea plants grown inorganic tea plantations.Fang Li Chunxia Dong Tianyuan Yang Shilai Bao Wanping Fang William J.Lucas Zhaoliang Zhang 2021Horticulture Research2021,8,1:3
9Estimation of carbon and nitrogen contents in citrus canopy by low-altitude remote sensing显示文摘The study aimed to investigate the fast and nondestructive method for detecting carbon and nitrogen content in citrus canopy.The multispectral imagery of Tarocco blood orange(Citrus sinensis L.Osbeck)plant canopy was obtained by a multispectral camera array mounted at an eight-rotor unmanned aerial vehicle(UAV)flying at an altitude of 100 m above the canopy in Wanzhou District of Chongqing Municipality,China.Average spectral reflectance data of the whole canopy,mature leaf areas and young leaves areas were extracted from the imagery.Two spectral pre-processing methods,multiplicative scatter correction(MSC)and standard normal variable(SNV),and two modeling methods,the partial least squares(PLS)and the least squares support vector machine(LS-SVM),were adopted and compared for their prediction accuracy of total content of nitrogen,soluble sugar and starch in the leaves.The results showed that,based on the spectral data extracted from the mature leaves in the multispectral imagery,the PLS model based on the original spectrum obtained a Rp(correlation coefficient)of 0.6469 and RMSEP(root mean squares error of prediction)of 0.1296,suggested that it was the best for the prediction of total nitrogen content;the PLS model based on MSC(multiplicative scatter correction)spectrum pre-processing was the best for predicting total soluble sugar content(Rp=0.6398 and RMSEP=8.8891);and the LS-SVM model based on MSC was the best for the starch content prediction(Rp=0.6822 and RMSEP=14.9303).The prediction accuracy for carbon and nitrogen contents based on the spectral data extracted from the whole canopy and the young leaves were lower than that from the mature leaves.The results indicate that it is feasible to estimate the carbon and nitrogen contents by low-altitude airborne multispectral images.Liu Xuefeng Lyu Qiang He Shaolan Yi Shilai Hu Deyu Wang Zhitao Xie Rangjin Zheng Yongqiang Deng Lie 2016International Journal of Agricultural and Biological Engineering2016,9,5:2
10GM130 regulates pulmonary surfactant protein secretion in alveolar typeⅡcells显示文摘Pulmonary surfactant is a lipid-protein complex secreted by alveolar typeⅡepithelial cells and is essential for the maintenance of the delicate structure of mammalian alveoli to promote efficient gas exchange across the air-liquid barrier.The Golgi apparatus plays an important role in pulmonary surfactant modification and secretory trafficking.However,the physiological function of the Golgi apparatus in the transport of pulmonary surfactants is unclear.In the present study,deletion of GM130,which encodes for a matrix protein of the cis-Golgi cisternae,was shown to induce the disruption of the Golgi structure leading to impaired secretion of lung surfactant proteins and lipids.Specifically,the results of in vitro and in vivo analysis indicated that the loss of GM130 resulted in trapping of Sftpa in the endoplasmic reticulum,Sftpb and Sftpc accumulation in the Golgi apparatus,and an increase in the compensatory secretion of Sftpd.Moreover,global and epithelial-specific GM130 knockout in mice resulted in an enlargement of alveolar airspace and an increase in alveolar epithelial autophagy;however,surfactant repletion partially rescued the enlarged airspace defects in GM130-deficient mice.Therefore,our results demonstrate that GM130 and the mammalian Golgi apparatus play a critical role in the control of surfactant protein secretion in pulmonary epithelial cells.Qianqian Pang Chunyi Liu Yulong Qiao Jian Zhao Sin Man Lam Mei Mei Guanghou Shui Shilai Bao Qiuling Li 2022Science China(Life Sciences)2022,65,1:2
11Identification of Key Genes for the Ultrahigh Yield of Rice Using Dynamic Cross-tissue Network Analysis显示文摘Significantly increasing crop yield is a major and worldwide challenge for food supply and security.It is well-known that rice cultivated at Taoyuan in Yunnan of China can produce the highest yield worldwide.Yet,the gene regulatory mechanism underpinning this ultrahigh yield has been a mystery.Here,we systematically collected the transcriptome data for seven key tissues at different developmental stages using rice cultivated both at Taoyuan as the case group and at another regular rice planting place Jinghong as the control group.We identified the top 24 candidate high-yield genes with their network modules from these well-designed datasets by developing a novel computational systems biology method,i.e.,dynamic cross-tissue(DCT)network analysis.We used one of the candidate genes,Os SPL4,whose function was previously unknown,for gene editing experimental validation of the high yield,and confirmed that Os SPL4 significantly affects panicle branching and increases the rice yield.This study,which included extensive field phenotyping,cross-tissue systems biology analyses,and functional validation,uncovered the key genes and gene regulatory networks underpinning the ultrahigh yield of rice.The DCT method could be applied to other plant or animal systems if different phenotypes under various environments with the common genome sequences of the examined sample.DCT can be downloaded from http://gffzz188fe103f8f1460as0of5960o50nx6ffc.ffgz.tsg.suse.edu.cn/ztpub/DCT.Jihong Hu Tao Zeng Qiongmei Xia Liyu Huang Yesheng Zhang Chuanchao Zhang Yan Zeng Hui Liu Shilai Zhang Guangfu Huang Wenting Wan Yi Ding Fengyi Hu Congdang Yang Luonan Chen Wen Wang 2020Genomics, Proteomics & Bioinformatics2020,18,3:2
12IκB Kinase Promotes Tumorigenesis through Inhibition of Forkhead FOXO3a显示文摘Mickey C.-T Hu Dung-Fang Lee Weiya Xia Leonard S Golfman Fu Ou-Yang Jer-Yen Yang Yiyu Zou Shilai Bao Norihisa Hanada Hitomi Saso Ryuji Kobayashi Mien-Chie Hung 2004Cell2004,,2:2
13Genome and Comparative Transcriptomics of African Wild Rice Oryza Iongistaminata Provide Insights into Molecular Mechanism of Rhizomatousness and Self-Incompatibility显示文摘Dear Editor, Oryza Iongistaminata is an African wild rice species with AA genome type possessing special traits that are highly valued for improving cultivated rice,such as strong resistance to biotic and abiotic stresses (Song et al.,1995) for improving resistance of cultivars,rhizomatousness for perennial breeding (Glover et al.,2010),and self-incompatibility (SI) for new ways to produce hybrid seeds (Ghesquiere,1986).Deciphering the genome of O.longistaminata will be the key to uncovering the mechanism of these hallmark traits and improving cultivated rice.Yesheng Zhang Shilai Zhang Hui Liu Binying Fu Lijuan Li Min Xie Yue Song Xin Li Jing Cai Wenting Wan Ling Kui Hui Huang Jun Lyu Yang Dong Wensheng Wang Liyu Fluang Jing Zhang Qinzhong Yang Qinfi Shan Qiong Li Wangqi Huang Dayun Tao Muhua Wang Mingsheng Chen Yeisoo Yu Rod A. Wing Wen Wang Fengyi Hu 2015Molecular Plant2015,8,11:1
14The Highly Conserved Protein Methyltransferase, Skbl, Is a Mediator of Hyperosmotic Stress Response in the Fission Yeast Schizossaccharomycespombe 显示文摘Shilai Bao Peirong Yang HyeWon Kim 2001J Biol Chem2001,276,14:1
15Vascular smooth muscle cell outgrowth,proliferation and apoptosis in young,and old rats 显示文摘Urano Y Shilai K Watanabe H 1999Atherosclerosis1999,146,:1
16IκB Kinase Promotes Tumorigenesis through Inhibition of Forkhead FOXO3a显示文摘Mickey C.-T Hu Dung-Fang Lee Weiya Xia Leonard S Golfman Fu Ou-Yang Jer-Yen Yang Yiyu Zou Shilai Bao Norihisa Hanada Hitomi Saso Ryuji Kobayashi Mien-Chie Hung 2004Cell2004,,2:1
17Population transcriptomics reveals a potentially positive role of expression diversity in adaptation显示文摘While it is widely accepted that genetic diversity determines the potential of adaptation,the role that gene expression variation plays in adaptation remains poorly known.Here we show that gene expression diversity could have played a positive role in the adaptation of Miscanthus lutarioriparius.RNA-seq was conducted for 80 individuals of the species,with half planted in the energy crop domestication site and the other half planted in the control site near native habitats.A leaf reference transcriptome consisting of 18,503 high-quality transcripts was obtained using a pipeline developed for de novo assembling with population RNA-seq data.The population structure and genetic diversity of M.lutarioriparius were estimated based on 30,609 genic single nucleotide polymorphisms.Population expression(Ep) and expression diversity(Ed)were defined to measure the average level and the magnitude of variation of a gene expression in the population,respectively.It was found that expression diversity increased while genetic Resediversity decreased after the species was transplanted from the native habitats to the harsh domestication site,especially for genes involved in abiotic stress resistance,histone methylation,and biomass synthesis under water limitation.The increased expression diversity could have enriched phenotypic variation directly subject to selections in the new environment.Qin Xu Shilai Xing Caiyun Zhu Wei Liu Yangyang Fan Qian Wang Zhihong Song Wenhui Yang Fan Luo Fei Shang Lifang Kang Wenli Chen Juan Yan Jianqiang Li Tao Sang 2015Journal of Integrative Plant Biology2015,57,3:1
18Genomes of 12 fig wasps provide insights into the adaptation of pollinators to fig syconia显示文摘Figs and fig pollinators are one of the few classic textbook examples of obligate pollination mutualism.The specific dependence of fig pollinators on the relatively safe living environment with sufficient food sources in the enclosed fig syconia implies that they are vulnerable to habitat changes.However,there is still no extensive genomic evidence to reveal the evolutionary footprint of this long-term mutually beneficial symbiosis in fig pollinators.In fig syconia,there are also non-pollinator species.The non-pollinator species differ in their evolutionary and life histories from pollinators.We conducted comparative analyses on 11 newly sequenced fig wasp genomes and one previously published genome.The pollinators colonized the figs approximately 66.9 million years ago,consistent with the origin of host figs.Compared with nonpollinators,many more genes in pollinators were subject to relaxed selection.Seven genes were absent in pollinators in response to environmental stress and immune activation.Pollinators had more streamlined gene repertoires in the innate immune system,chemosensory toolbox,and detoxification system.Our results provide genomic evidence for the differentiation between pollinators and nonpollinators.The data suggest that owing to the long-term adaptation to the fig,some genes related to functions no longer required are absent in pollinators.Jinhua Xiao Xianqin Wei Yi Zhou Zhaozhe Xin Yunheng Miao Hongxia Hou Jiaxing Li Dan Zhao Jing Liu Rui Chen Liming Niu Guangchang Ma Wenquan Zhen Shunmin He Jianxia Wang Xunfan Wei Weihao Dou Zhuoxiao Sui Haikuan Zhang Shilai Xing Miao Shi Dawei Huang 2021Journal of Genetics and Genomics2021,48,3:1
19PRMT5 determines the pattern of polyploidization and prevents liver from cirrhosis and carcinogenesis显示文摘Human hepatocellular carcinoma(HCC)occurs almost exclusively in cirrhotic livers.Here,we report that hepatic loss of protein arginine methyltransferase 5(PRMT5)in mice is sufficient to cause cirrhosis and HCC in a clinically relevant way.Furthermore,pathological polyploidization induced by hepatic loss of PRMT5 promotes liver cirrhosis and hepatic tumorigenesis in aged liver.The loss of PRMT5 leads to hyperaccumulation of P21 and endoreplication-dependent formation of pathological mono-nuclear polyploid hepatocytes.PRMT5 and symmetric dimethylation at histone H4 arginine 3(H4R3me2s)directly associate with chromatin of P21 to suppress its transcription.More importantly,loss of P21 rescues the pathological mono-nuclear polyploidy and prevents PRMT5-deficiency-induced liver cirrhosis and HCC.Thus,our results indicate that PRMT5-mediated symmetric dimethylation at histone H4 arginine 3(H4R3me2s)is crucial for preventing pathological polyploidization,liver cirrhosis and tumorigenesis in mouse liver.Jincheng Wang Xiang Huang Daoshan Zheng Qiuling Li Mei Mei Shilai Bao 2023Journal of Genetics and Genomics2023,50,2:1
20The Protein Arginine Methylase 5(PRMT5/SKB1) Gene Is Required for the Maintenance of Root Stem Cells in Response to DNA Damage显示文摘Plant root stem cells and their surrounding microenvironment,namely the stem cell niche,are hypersensitive to DNA damage.However,the molecular mechanisms that help maintain the genome stability of root stem cells remain elusive.Here we show that the root stem cells in the skbl(Shk1 kinase binding protein 1) mutant undergoes DNA damage-induced cell death,which is enhanced when combined with a lesion of the Ataxia-telangiectasia mutated(ATM) or the ATM/RAD3-related(ATR) genes,suggesting that the SKBI plays a synergistically effect with ATM and ATR in DNA damage pathway.We also provide evidence that SKBI is required for the maintenance of quiescent center(QC),a root stem cell niche,under DNA damage treatments.Furthermore,we report decreased and ectopic expression of SHORTROOT(SHR) in response to DNA damage in the skbl root tips,while the expression of SCARECROW(SCR) remains unaffected.Our results uncover a new mechanism of plant root stem cell maintenance under DNA damage conditions that requires SKB1.Qiuling Li Yan Zhao Minghui Yue Yongbiao Xue Shilai Bao 2016Journal of Genetics and Genomics2016,43,4:1
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