Roses are important horticultural plants with enormous diversity in flowers and flowering behavior.However,molecular regulation of flowering time variation in roses remains poorly characterized.Here,we report an expan...Roses are important horticultural plants with enormous diversity in flowers and flowering behavior.However,molecular regulation of flowering time variation in roses remains poorly characterized.Here,we report an expansion of the FAR1/FRS-like genes that correlates well with the switch to prostrate-toerect growth of shoots upon flowering in Rosa wichuraiana‘Basye's Thornless'(BT).With the availability of the high-quality chromosome-level genome assembly for BT that we developed recently,we identified 91 RwFAR1/FRS-like genes,a significant expansion in contrast to 52 in Rosa chinensis‘Old Blush’(OB),a founder genotype in modern rose domestication.Rose FAR1/FRS-like proteins feature distinct variation in protein domain structures.The dispersed expansion of RwFAR1/FRS-like genes occurred specifically in clade I and II and is significantly associated with transposon insertion in BT.Most of the RwFAR1/FRS-like genes showed relatively higher expression level than their corresponding orthologs in OB.FAR1/FRS-like genes regulate light-signaling processes,shade avoidance,and flowering time in Arabidopsis thaliana.Therefore,the expansion and duplication of RwFAR1/FRS-like genes,followed by diversification in gene expression,might offer a novel leverage point for further understanding the molecular regulation of the variation in shoot-growth behavior and flowering time in roses.展开更多
The FAR1-related sequence(FAR1)gene family consists of transcription factors that originated from transposases and is crucial for light signaling and stress adaptation in plants.Despite the recognized importance of FA...The FAR1-related sequence(FAR1)gene family consists of transcription factors that originated from transposases and is crucial for light signaling and stress adaptation in plants.Despite the recognized importance of FAR1 genes in model organisms,their genomic architecture,structural variability,and expression patterns in Phaseolus vulgaris have yet to be investigated.This study offers the inaugural comprehensive genome-wide identification and characterization of the FAR1 gene family in P.vulgaris.A total of 27 PvulFAR1 genes were identified,and their chromosomal distribution,gene structures,conserved domains,and phylogenetic relationships were analyzed systematically.The promoter regions of these genes were discovered to encompass a diverse range of cis-regulatory elements that respond to light,phytohormones,and abiotic stressors,highlighting their regulatory complexity.In silico expression analysis and quantitative real-time PCR(qRT-PCR)experiments demonstrated differential expression patterns of specific PvulFAR1 genes under salt and drought stress in two commercial bean cultivars.PvulFAR1-10 demonstrated consistent upregulation under both stress conditions,especially in the stress-tolerant cultivar Elkoca-05,indicating its potential role in broad-spectrum stress responsiveness.Gene ontology and protein–protein interaction network analyses revealed that PvulFAR1 proteins are predominantly nuclear-localized transcription factors,enriched in zinc ion binding activity,and associated with transcriptional regulation and nucleobase metabolic processes.The results offer novel perspectives on the evolution,structural complexity,and stress-responsive regulatory functions of the FAR1 gene family in common bean.This fundamental knowledge provides significant candidate genes for additional validation and for developing of genetically improved cultivars with enhanced tolerance to abiotic stresses.Future research should focus on clarifying the downstream targets of essential FAR1 members and their integrative function in plant developmental and stress response networks.展开更多
目的:探讨人远端上游元件结合蛋白1(far upstream element binding protein 1,FUBP1)基因在肺腺癌组织中的表达及其对肺腺癌A549细胞化疗敏感性的影响。方法:选取43例来源于201-03-17-2012-05-09沈阳军区总医院胸外科,手术患者的肺腺癌...目的:探讨人远端上游元件结合蛋白1(far upstream element binding protein 1,FUBP1)基因在肺腺癌组织中的表达及其对肺腺癌A549细胞化疗敏感性的影响。方法:选取43例来源于201-03-17-2012-05-09沈阳军区总医院胸外科,手术患者的肺腺癌及相应距肿瘤>1cm的癌旁组织标本为研究对象。Real-time PCR检测FUBP1mRNA在肺腺癌组织中的表达;RNA干扰技术沉默A549细胞中FUBP1基因的表达,蛋白质印迹法检测抑制效果;MTT法和流式细胞术测定FUBP1基因表达沉默对细胞生长抑制率和凋亡率的影响。不同浓度顺铂(DDP)处理FUBP1基因表达沉默的A549细胞,检测细胞生长抑制率和凋亡率。结果:FUBP1基因在肺腺癌组织中的表达显著上调,为癌旁正常组织中FUBP1的177.65%,t=2.858,P=0.006。FUBP1随着分化程度的降低和分期的升高呈逐渐增高趋势,且与淋巴结及远处转移相关,P<0.01。siRNA-FUBP1能够显著抑制A549细胞中FUBP1蛋白的表达,F=14.726,P<0.001;而FUBP1基因表达沉默的A549细胞的生长抑制率由1.4%升高至29.5%,F=16.302,P<0.001;凋亡率由2.68%升高至5.84%,F=19.497,P<0.001。FUBP1基因表达沉默的A549细胞分别经1、3和5μg/mL DDP处理后,生长抑制率由14.418%、17.460%和23.545%分别升高至21.693%、27.513%和37.566%,相同DDP浓度的2组间比较的t值分别为21.074、25.835和29.473,P值均<0.001;DDP的IC50由(5.12±0.31)μg/mL降至(3.93±0.24)μg/mL,t=3.487,P=0.001;而凋亡率由8.85%、14.37%和18.21%分别升高至13.25%、18.46%和26.52%,相同DDP浓度组间比较的t值分别为7.279、15.878和23.111,P值均<0.001。结论:FUBP1的表达上调与肺腺癌相关,FUBP1表达沉默能够增加A549细胞的生长抑制率和凋亡率,并且可以提高A549细胞对化疗药物DDP的敏感性。展开更多
基金This work was funded by the Strategic Priority Research Program of the Chinese Academy of Sciences to J-Y H(XDB31000000)the CAS Pioneer Hundred Talents Program to J-Y H(292015312D11035)and Yunnan Recruitment Program of Experts in Science to J-Y H.
文摘Roses are important horticultural plants with enormous diversity in flowers and flowering behavior.However,molecular regulation of flowering time variation in roses remains poorly characterized.Here,we report an expansion of the FAR1/FRS-like genes that correlates well with the switch to prostrate-toerect growth of shoots upon flowering in Rosa wichuraiana‘Basye's Thornless'(BT).With the availability of the high-quality chromosome-level genome assembly for BT that we developed recently,we identified 91 RwFAR1/FRS-like genes,a significant expansion in contrast to 52 in Rosa chinensis‘Old Blush’(OB),a founder genotype in modern rose domestication.Rose FAR1/FRS-like proteins feature distinct variation in protein domain structures.The dispersed expansion of RwFAR1/FRS-like genes occurred specifically in clade I and II and is significantly associated with transposon insertion in BT.Most of the RwFAR1/FRS-like genes showed relatively higher expression level than their corresponding orthologs in OB.FAR1/FRS-like genes regulate light-signaling processes,shade avoidance,and flowering time in Arabidopsis thaliana.Therefore,the expansion and duplication of RwFAR1/FRS-like genes,followed by diversification in gene expression,might offer a novel leverage point for further understanding the molecular regulation of the variation in shoot-growth behavior and flowering time in roses.
文摘The FAR1-related sequence(FAR1)gene family consists of transcription factors that originated from transposases and is crucial for light signaling and stress adaptation in plants.Despite the recognized importance of FAR1 genes in model organisms,their genomic architecture,structural variability,and expression patterns in Phaseolus vulgaris have yet to be investigated.This study offers the inaugural comprehensive genome-wide identification and characterization of the FAR1 gene family in P.vulgaris.A total of 27 PvulFAR1 genes were identified,and their chromosomal distribution,gene structures,conserved domains,and phylogenetic relationships were analyzed systematically.The promoter regions of these genes were discovered to encompass a diverse range of cis-regulatory elements that respond to light,phytohormones,and abiotic stressors,highlighting their regulatory complexity.In silico expression analysis and quantitative real-time PCR(qRT-PCR)experiments demonstrated differential expression patterns of specific PvulFAR1 genes under salt and drought stress in two commercial bean cultivars.PvulFAR1-10 demonstrated consistent upregulation under both stress conditions,especially in the stress-tolerant cultivar Elkoca-05,indicating its potential role in broad-spectrum stress responsiveness.Gene ontology and protein–protein interaction network analyses revealed that PvulFAR1 proteins are predominantly nuclear-localized transcription factors,enriched in zinc ion binding activity,and associated with transcriptional regulation and nucleobase metabolic processes.The results offer novel perspectives on the evolution,structural complexity,and stress-responsive regulatory functions of the FAR1 gene family in common bean.This fundamental knowledge provides significant candidate genes for additional validation and for developing of genetically improved cultivars with enhanced tolerance to abiotic stresses.Future research should focus on clarifying the downstream targets of essential FAR1 members and their integrative function in plant developmental and stress response networks.
文摘目的:探讨人远端上游元件结合蛋白1(far upstream element binding protein 1,FUBP1)基因在肺腺癌组织中的表达及其对肺腺癌A549细胞化疗敏感性的影响。方法:选取43例来源于201-03-17-2012-05-09沈阳军区总医院胸外科,手术患者的肺腺癌及相应距肿瘤>1cm的癌旁组织标本为研究对象。Real-time PCR检测FUBP1mRNA在肺腺癌组织中的表达;RNA干扰技术沉默A549细胞中FUBP1基因的表达,蛋白质印迹法检测抑制效果;MTT法和流式细胞术测定FUBP1基因表达沉默对细胞生长抑制率和凋亡率的影响。不同浓度顺铂(DDP)处理FUBP1基因表达沉默的A549细胞,检测细胞生长抑制率和凋亡率。结果:FUBP1基因在肺腺癌组织中的表达显著上调,为癌旁正常组织中FUBP1的177.65%,t=2.858,P=0.006。FUBP1随着分化程度的降低和分期的升高呈逐渐增高趋势,且与淋巴结及远处转移相关,P<0.01。siRNA-FUBP1能够显著抑制A549细胞中FUBP1蛋白的表达,F=14.726,P<0.001;而FUBP1基因表达沉默的A549细胞的生长抑制率由1.4%升高至29.5%,F=16.302,P<0.001;凋亡率由2.68%升高至5.84%,F=19.497,P<0.001。FUBP1基因表达沉默的A549细胞分别经1、3和5μg/mL DDP处理后,生长抑制率由14.418%、17.460%和23.545%分别升高至21.693%、27.513%和37.566%,相同DDP浓度的2组间比较的t值分别为21.074、25.835和29.473,P值均<0.001;DDP的IC50由(5.12±0.31)μg/mL降至(3.93±0.24)μg/mL,t=3.487,P=0.001;而凋亡率由8.85%、14.37%和18.21%分别升高至13.25%、18.46%和26.52%,相同DDP浓度组间比较的t值分别为7.279、15.878和23.111,P值均<0.001。结论:FUBP1的表达上调与肺腺癌相关,FUBP1表达沉默能够增加A549细胞的生长抑制率和凋亡率,并且可以提高A549细胞对化疗药物DDP的敏感性。
