检索结果-南通市图书馆

Genome-wide Expansion and Expression Divergence of the Basic Leucine Zipper Transcription Factors in Higher Plants with an Emphasis on Sorghum

引用

Journal of Integrative Plant Biology 2011年第3期53卷 212-231页

作者： Jizhou Wang Junxia Zhou Baolan Zhang Jeevanandam Vanitha Srinivasan Ramachandran Shu-Ye Jiang Institute of Botany and temasek life sciences laboratory Joint research & Development laboratory Institute of Botany the Chinese Academy of Sciences Beijing 100093 China temasek life sciences laboratory 1 Research Link the National University of Singapore Singapore 117604 Singapore

Plant bZIP transcription factors play crucial roles in multiple biological processes. However, little is known about the sorghum bZIP gene family although the sorghum genome has been completely sequenced. In this study, we have carried out a genome-wide identification and characterization of this gene family in sorghum. Our data show that the genome encodes at least 92 bZIP transcription factors. These bZIP genes have been expanded mainly by segmental duplication. Such an expansion mechanism has also been observed in rice, arabidopsis and many other plant organisms, suggesting a common expansion mode of this gene family in plants. Further investigation shows that most of the bZIP members have been present in the most recent common ancestor of sorghum and rice and the major expansion would occur before the sorghum-rice split era. Although these bZlP genes have been duplicated with a long history, they exhibited limited functional divergence as shown by nonsynonymous substitutions （Ka）lsynonymous substitutions （Ks） analyses. Their retention was mainly due to the high percentages of expression divergence. Our data also showed that this gene family might play a role in multiple developmental stages and tissues and might be regarded as important regulators of various abiotic stresses and sugar signaling.

关键词： Transcription factors Transcription Plants Planting Families Genes Sorghum Genomes Stress Data

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Warm temperature compromises JA-regulated basal resistance to enhance Magnaporthe oryzae infection in rice

引用

Molecular Plant 2022年第4期15卷 723-739页

作者： Jiehua Qiu Junhui Xie Ya Chen Zhenan Shen Huanbin Shi Naweed I.Naqvi Qian Qian Yan Liang Yanjun Kou State Key laboratory of Rice Biology China National Rice Research InstituteHangzhou 311400China temasek life sciences laboratory and Department of Biological Sciences1 Research LinkNational University of SingaporeSingapore 117604Singapore College of Agriculture and Biotechnology Zhejiang UniversityHangzhou 310058China

Changes in global temperatures profoundly affect the occurrence of plant diseases.It is well known that rice blast can easily become epidemic in relatively warm weather.However,the molecular mechanism remains unclear.In this study,we show that enhanced blast development at a warm temperature(22C)compared with the normal growth temperature(28C)is rice plant-determined.Comparative transcriptome analysis revealed that jasmonic acid(JA)biosynthesis and signaling genes in rice could be effectively induced by Magnaporthe oryzae at 28C but not at 22C.Phenotypic analyses of the osaoc1 and osmyc2 mutants,OsCOI1 RNAi lines,and OsMYC2-OE plants further demonstrated that compromised M.oryzaeinduced JA biosynthesis and signaling lead to enhanced blast susceptibility at the warm temperature.Consistent with these results,we found that exogenous application of methyl jasmonate served as an effective strategy for improving blast resistance under the warm environmental conditions.Furthermore,decreased activation of JA signaling resulted in the downregulated expression of some key basal resistance genes at 22C when compared with 28C.Among these affected genes,OsCEBiP(chitin elicitorbinding protein precursor)was found to be directly regulated by OsMYB22 and its interacting protein OsMYC2,a key component of JA signaling,and this contributed to temperature-modulated blast resistance.Taken together,these results suggest that warm temperature compromises basal resistance in rice and enhances M.oryzae infection by reducing JA biosynthesis and signaling,providing potential new strategies for managing rice blast disease under warm climate conditions.

关键词： temperature-modulated resistance rice blast jasmonic acid CEBiP MYB22 plant immunity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nucleoporin 160 Regulates Flowering through Anchoring HOS1 for Destabilizing CO in Arabidopsis

引用

Plant Communications 2020年第2期1卷 66-76页

作者： Chunying Li Lu Liu Zhi Wei Norman Teo Lisha Shen Hao Yu Department of Biological sciences Faculty of ScienceNational University of SingaporeSingapore 117543Singapore temasek life sciences laboratory National University of SingaporeSingapore 117604Singapore

Nuclear pore complexes(NPCs),which comprise multiple copies of nucleoporins(Nups),are large protein assemblies embedded in the nuclear envelope connecting the nucleus and cytoplasm.Although it has been known that Nups affect flowering in Arabidopsis,the underlying mechanisms are poorly understood.Here,we show that loss of function of Nucleoporin 160(Nup160)leads to increased abundance of CONSTANS(CO)protein and the resulting upregulation of FLOWERING LOCUS T(FT)specifically in the morning.We demonstrate that Nup160 regulates CO protein stability through affecting NPC localization of an E3-ubiquitin ligase,HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES1(HOS1),which destabilizes CO protein in the morning period.Taken together,these results provide a mechanistic understanding of Nup function in the transition from vegetative to reproductive growth,suggesting that deposition of HOS1 at NPCs by Nup160 is essential for preventing precocious flowering in response to photoperiod in Arabidopsis.

关键词： nuclear pore complexes HOS1 CO flowering time

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

5-Methylcytosine RNA Methylation in Arabidopsis Thaliana

引用

Molecular Plant 2017年第11期10卷 1387-1399页

作者： Xuean Cui Zhe Liang Lisha Shen Qian Zhang Shengjie Bao Yuke Geng Bin Zhang Vonny Leo Leah A. Vardy Tiegang Lu Xiaofeng Gu Hao Yu Biotechnology research Institute Chinese Academy of Agricultural Sciences Beijing 100081 China Department of Biological sciences and temasek life sciences laboratory National University of Singapore 117543 Singapore Singapore Institute of Medical Biology Agency for Science Technology and Research (A^+STAR) 8A Biomedical Grove #06-06 Immunos 138648 Singapore Singapore

5-Methylcytosine （m^5C） is a well-characterized DNA modification, and is also predominantly reported in abundant non-coding RNAs in both prokaryotes and eukaryotes. However, the distribution and biological functions of m^5C in plant mRNAs remain largely unknown. Here, we report transcriptome-wide profiling of RNA m^5C in Arabidopsis thaliana by applying m^5C RNA immunoprecipitation followed by a deep- sequencing approach （m^5C-RIP-seq）. LC-MS/MS and dot blot analyses reveal a dynamic pattern of m^5C mRNA modification in various tissues and at different developmental stages, m^5C-RIP-seq analysis identified 6045 m^5C peaks in 4465 expressed genes in young seedlings. We found that m^5C is enriched in coding sequences with two peaks located immediately after start codons and before stop codons, and is associated with mRNAs with low translation activity. We further demonstrated that an RNA （cytosine-5）-methyl- transferase, tRNA-specific methyltransferase 4B （TRM4B）, exhibits m^5C RNA methyltransferase activity. Mutations in TRM4B display defects in root development and decreased m^5C peaks. TRM4B affects the transcript levels of the genes involved in root development, which is positively correlated with their mRNA stability and m^5C levels. Our results suggest that m^5C in mRNA is a new epitranscriptome marker inArabidopsis, and that regulation of this modification is an integral part of gene regulatory networks underlying plant development.

关键词： 5-methylcytosine （m^5C） Arabidopsis RNA methylation TRM4B root development

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Florigen trafficking integrates photoperiod and temperature signals in Arabidopsis^FA

引用

Journal of Integrative Plant Biology 2020年第9期62卷 1385-1398页

作者： Lu Liu Yu Zhang Hao Yu School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China Department of Biological sciences National University of SingaporeSingapore 117543Singapore temasek life sciences laboratory National University of SingaporeSingapore 117604Singapore

The transition to flowering is the most dra-matic phase change in flowering plants and is crucial for reproductive success. A complex regulatory network in plants has evolved to perceive and integrate the endog-enous and environmental signals. These signals perceived, including day length and temperature, converge to regu-late FLOWERING LOCUS T (FT), which encodes a mobile stimulus required for floral induction in Arabidopsis. Despite the discovery of modulation of FT messenger RNA (mRNA) expression by ambient temperature, whether the trafficking of FT protein is controlled in response to changes in growth temperature is so far unknown. Here, we show that FT transport from companion cells to sieve elements is controlled in a temperature-dependent manner. This process is mediated by multiple C2 domain and transmembrane region proteins (MCTPs) and a soluble N-ethylmaleimide-sensitive factor protein attach-ment protein receptor (SNARE). Our findings suggest that ambient temperatures regulate both FT mRNA expression and FT protein trafficking to prevent precocious flowering at low temperatures and ensure plant reproductive suc-cess under favorable environmental conditions.

关键词： integrate ambient traffic

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：