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Oryza brachyantha

Soham Ray, Lotan K Bose, Joshitha Ray, Umakanta Ngangkham, Jawahar L Katara, Sanghamitra Samantaray, Lambodar Behera, Mahender Anumalla, Onkar N Singh, Meingsheng Chen, Rod A Wing, Trilochan Mohapatra
African wild rice Oryza brachyantha (FF), a distant relative of cultivated rice Oryza sativa (AA), carries genes for pests and disease resistance. Molecular marker assisted alien gene introgression from this wild species to its domesticated counterpart is largely impeded due to the scarce availability of cross-transferable and polymorphic molecular markers that can clearly distinguish these two species. Availability of the whole genome sequence (WGS) of both the species provides a unique opportunity to develop markers, which are cross-transferable...
August 2016: Molecular Genetics and Genomics: MGG
F Gao, X F Cao, J P Si, Z Y Chen, C L Duan
Dendrobium officinale is one of the most well-known traditional Chinese medicines, and polysaccharide is its main active ingredient. Many studies have investigated the synthesis and accumulation mechanisms of polysaccharide, but until recently, little was known about the molecular mechanism of how polysaccharide is synthesized because no related genes have been cloned. In this study, we cloned an alkaline/neutral invertase gene from D. officinale (DoNI) by the rapid amplification of cDNA ends (RACE) method...
2016: Genetics and Molecular Research: GMR
Koji Miyamoto, Masahiro Fujita, Matthew R Shenton, Shota Akashi, Chizu Sugawara, Arisa Sakai, Kiyotaka Horie, Morifumi Hasegawa, Hiroshi Kawaide, Wataru Mitsuhashi, Hideaki Nojiri, Hisakazu Yamane, Nori Kurata, Kazunori Okada, Tomonobu Toyomasu
Plants frequently possess operon-like gene clusters for specialized metabolism. Cultivated rice, Oryza sativa, produces antimicrobial diterpene phytoalexins represented by phytocassanes and momilactones, and the majority of their biosynthetic genes are clustered on chromosomes 2 and 4, respectively. These labdane-related diterpene phytoalexins are biosynthesized from geranylgeranyl diphosphate via ent-copalyl diphosphate or syn-copalyl diphosphate. The two gene clusters consist of genes encoding diterpene synthases and chemical-modification enzymes including P450s...
August 2016: Plant Journal: for Cell and Molecular Biology
Yunshuang Li, Fang Yuan, Zhaohong Wen, Yihao Li, Fang Wang, Tao Zhu, Wenqing Zhuo, Xi Jin, Yingdian Wang, Heping Zhao, Zhen-Ming Pei, Shengcheng Han
BACKGROUND: Reception of and response to exogenous and endogenous osmotic changes is important to sustain plant growth and development, as well as reproductive formation. Hyperosmolality-gated calcium-permeable channels (OSCA) were first characterised as an osmosensor in Arabidopsis and are involved in the perception of extracellular changes to trigger hyperosmolality-induced [Ca(2+)]i increases (OICI). To explore the potential biological functions of OSCAs in rice, we performed a bioinformatics and expression analysis of the OsOSCA gene family...
2015: BMC Plant Biology
Sangeeta Singh, Suresh Chand, N K Singh, Tilak Raj Sharma
The resistance (R) genes and defense response (DR) genes have become very important resources for the development of disease resistant cultivars. In the present investigation, genome-wide identification, expression, phylogenetic and synteny analysis was done for R and DR-genes across three species of rice viz: Oryza sativa ssp indica cv 93-11, Oryza sativa ssp japonica and wild rice species, Oryza brachyantha. We used the in silico approach to identify and map 786 R -genes and 167 DR-genes, 672 R-genes and 142 DR-genes, 251 R-genes and 86 DR-genes in the japonica, indica and O...
2015: PloS One
Mamta Sagar, Neetesh Pandey, Naseha Qamar, Brijendra Singh, Akanksha Shukla
The long chain fatty acids incorporated into plant lipids are derived from the iterative addition of C2 units which is provided by malonyl-CoA to an acyl-CoA after interactions with 3-ketoacyl-CoA synthase (KCS), found in several plants. This study provides functional characterization of three 3 ketoacyl CoA synthase like proteins in Vitis vinifera (one) and Oryza brachyantha (two proteins). Sequence analysis reveals that protein of Oryza brachyantha shows 96% similarity to a hypothetical protein in Sorghum bicolor; total 11 homologs were predicted in Sorghum bicolor...
March 2015: Interdisciplinary Sciences, Computational Life Sciences
Jian Ma, Qian-Tao Jiang, Long Wei, Qiang Yang, Xiao-Wei Zhang, Yuan-Ying Peng, Guo-Yue Chen, Yu-Ming Wei, Chunji Liu, You-Liang Zheng
As one of the phosphoglucan phosphatases, starch excess 4 (SEX4) encoded by SEX4 gene has recently been intensively studied because of its vital role in the degradation of leaf starch. In this study, we isolated and chromosomally mapped barley SEX4, characterized its gene and protein structure, predicted the cis-elements of its promoter, and analysed its expression based on real-time quantitative PCR and publically available microarray data. The full length of barely SEX4 (HvSEX4) was 4,598 bp and it was mapped on the long arm of chromosome 4H (4HL)...
December 2014: Planta
R Ramachandran, Z R Khan
A wild rice,Oryza brachyantha, was rated as highly resistant to rice leaffolder,Cnaphalocrocis medinalis (Guenée), while its F1 hybrid from a cross with a high-yielding, leaffolder-susceptible rice, IR31917-45-3-2, was rated resistant in a standard screening test. In comparison with IR31917-45-3-2,O. brachyantha and the F1 hybrid were unsuitable for oviposition, survival, and growth ofC. medinalis. However, growth and survival of larvae in artificial diets containing lyophilized leaf powder of IR31917-45-3-2 andO...
January 1991: Journal of Chemical Ecology
H Ichikawa, A Hirai, T Katayama
Relationships in a wide range of Oryza species (13 species) were analyzed using the large subunits (LS) of Fraction I protein (Rubisco) and the Bam HI restriction patterns of chloroplast DNA (ctDNA) as molecular markers. Four types of LS were detected by isoelectrofocusing with and without S-carboxymethylation. The close relation between AA and CCDD genome species was suggested by analyses of LS and ctDNA. Intraspecific variation in O. latifolia was detected at the levels of both LS and ctDNA. The LS of the BB, BBCC, and CC genomes and FF (O...
June 1986: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Julie Jacquemin, Jetty S S Ammiraju, Georg Haberer, Dean D Billheimer, Yeisoo Yu, Liana C Liu, Luis F Rivera, Klaus Mayer, Mingsheng Chen, Rod A Wing
In analyzing gene families in the whole-genome sequences available for O. sativa (AA), O. glaberrima (AA), and O. brachyantha (FF), we observed large size expansions in the AA genomes compared to FF genomes for the super-families F-box and NB-ARC, and five additional families: the Aspartic proteases, BTB/POZ proteins (BTB), Glutaredoxins, Trypsin α-amylase inhibitor proteins, and Zf-Dof proteins. Their evolutionary dynamic was investigated to understand how and why such important size variations are observed between these closely related species...
April 2014: Molecular Plant
Chuandeng Yi, Wenli Zhang, Xibin Dai, Xing Li, Zhiyun Gong, Yong Zhou, Guohua Liang, Minghong Gu
The centromere is a key chromosomal component for sister chromatid cohesion and is the site for kinetochore assembly and spindle fiber attachment, allowing each sister chromatid to faithfully segregate to each daughter cell during cell division. It is not clear what types of sequences act as functional centromeres and how centromere sequences are organized in Oryza brachyantha, an FF genome species. In this study, we found that the three classes of centromere-specific CentO-F satellites (CentO-F1, CentO-F2, and CentOF3) in O...
December 2013: Chromosome Research
Jinfeng Chen, Quanfei Huang, Dongying Gao, Junyi Wang, Yongshan Lang, Tieyan Liu, Bo Li, Zetao Bai, Jose Luis Goicoechea, Chengzhi Liang, Chengbin Chen, Wenli Zhang, Shouhong Sun, Yi Liao, Xuemei Zhang, Lu Yang, Chengli Song, Meijiao Wang, Jinfeng Shi, Geng Liu, Junjie Liu, Heling Zhou, Weili Zhou, Qiulin Yu, Na An, Yan Chen, Qingle Cai, Bo Wang, Binghang Liu, Jiumeng Min, Ying Huang, Honglong Wu, Zhenyu Li, Yong Zhang, Ye Yin, Wenqin Song, Jiming Jiang, Scott A Jackson, Rod A Wing, Jun Wang, Mingsheng Chen
The wild species of the genus Oryza contain a largely untapped reservoir of agronomically important genes for rice improvement. Here we report the 261-Mb de novo assembled genome sequence of Oryza brachyantha. Low activity of long-terminal repeat retrotransposons and massive internal deletions of ancient long-terminal repeat elements lead to the compact genome of Oryza brachyantha. We model 32,038 protein-coding genes in the Oryza brachyantha genome, of which only 70% are located in collinear positions in comparison with the rice genome...
2013: Nature Communications
Dapeng Wang, Yan Xia, Xinna Li, Lixia Hou, Jun Yu
Over the past 10 years, genomes of cultivated rice cultivars and their wild counterparts have been sequenced although most efforts are focused on genome assembly and annotation of two major cultivated rice (Oryza sativa L.) subspecies, 93-11 (indica) and Nipponbare (japonica). To integrate information from genome assemblies and annotations for better analysis and application, we now introduce a comparative rice genome database, the Rice Genome Knowledgebase (RGKbase, RGKbase is built to have three major components: (i) integrated data curation for rice genomics and molecular biology, which includes genome sequence assemblies, transcriptomic and epigenomic data, genetic variations, quantitative trait loci (QTLs) and the relevant literature; (ii) User-friendly viewers, such as Gbrowse, GeneBrowse and Circos, for genome annotations and evolutionary dynamics and (iii) Bioinformatic tools for compositional and synteny analyses, gene family classifications, gene ontology terms and pathways and gene co-expression networks...
January 2013: Nucleic Acids Research
Chao Shi, Na Hu, Hui Huang, Ju Gao, You-Jie Zhao, Li-Zhi Gao
BACKGROUND: Chloroplast genomes supply valuable genetic information for evolutionary and functional studies in plants. The past five years have witnessed a dramatic increase in the number of completely sequenced chloroplast genomes with the application of second-generation sequencing technology in plastid genome sequencing projects. However, cost-effective high-throughput chloroplast DNA (cpDNA) extraction becomes a major bottleneck restricting the application, as conventional methods are difficult to make a balance between the quality and yield of cpDNAs...
2012: PloS One
Chuanzhu Fan, Jason G Walling, Jianwei Zhang, Cory D Hirsch, Jiming Jiang, Rod A Wing
Recombination is strongly suppressed in centromeric regions. In chromosomal regions with suppressed recombination, deleterious mutations can easily accumulate and cause degeneration of genes and genomes. Surprisingly, the centromere of chromosome8 (Cen8) of rice (Oryza sativa) contains several transcribed genes. However, it remains unclear as to what selective forces drive the evolution and existence of transcribed genes in Cen8. Sequencing of orthologous Cen8 regions from two additional Oryza species, Oryza glaberrima and Oryza brachyantha, which diverged from O...
August 2011: Plant Cell
J Jacquemin, C Chaparro, M Laudié, A Berger, F Gavory, J L Goicoechea, R A Wing, R Cooke
Whole genome duplication (WGD) and subsequent evolution of gene pairs have been shown to have shaped the present day genomes of most, if not all, plants and to have played an essential role in the evolution of many eukaryotic genomes. Analysis of the rice (Oryza sativa ssp. japonica) genome sequence suggested an ancestral WGD ∼50-70 Ma common to all cereals and a segmental duplication between chromosomes 11 and 12 as recently as 5 Ma. More recent studies based on coding sequences have demonstrated that gene conversion is responsible for the high sequence conservation which suggested such a recent duplication...
November 2011: Molecular Biology and Evolution
Kwei-Duan Chang, Shao-An Fang, Fang-Chi Chang, Mei-Chu Chung
Contrary to the chromosomal polymorphism of 45S ribosomal genes (45S rDNA) loci in other Oryza species, each of Oryza australiensis and Oryza brachyantha has only one 45S rDNA locus at the most conserved position of 45S rDNAs in Oryza. O. australiensis and O. brachyantha are known phylogenetically distant and have extremely different genome sizes among diploid Oryza species. This study reveals that the sequences and organizations of intergenic spacer (IGS) for 45S rDNA of both O. australiensis and O. brachyantha are different from other Oryza species...
September 2010: Genomics
Dongying Gao, Navdeep Gill, Hye-Ran Kim, Jason G Walling, Wenli Zhang, Chuanzhu Fan, Yeisoo Yu, Jianxin Ma, Phillip SanMiguel, Ning Jiang, Zhukuan Cheng, Rod A Wing, Jiming Jiang, Scott A Jackson
Most eukaryotic centromeres contain large quantities of repetitive DNA, such as satellite repeats and retrotransposons. Unlike most transposons in plant genomes, the centromeric retrotransposon (CR) family is conserved over long evolutionary periods among a majority of the grass species. CR elements are highly concentrated in centromeres, and are likely to play a role in centromere function. In order to study centromere evolution in the Oryza (rice) genus, we sequenced the orthologous region to centromere 8 of Oryza sativa from a related species, Oryza brachyantha...
December 2009: Plant Journal: for Cell and Molecular Biology
Nadar Khan, Tomoyuki Katsube-Tanaka, Shuichi Iida, Takeshi Yamaguchi, Junichi Nakano, Hisashi Tsujimoto
In efforts to find genetic resources with high nutritional value of rice seed, we assessed the diversity of the major storage protein glutelin in 13 wild and 2 cultivated rice species by a unique SDS-PAGE method and subunit-specific antibodies. Maximum separation of microheterogeneous glutelin alpha-polypeptides, which is a prerequisite for the diversity evaluation, could be attained by SDS-PAGE performed at higher temperature (45 degrees C) than the generally employed temperatures (4-25 degrees C). Seven antipeptide antibodies were raised against subunit-specific epitope sequences designed at five sites from four variable regions spanning the glutelin alpha-polypeptides...
March 2008: Electrophoresis
Chuan-Deng Yi, Zhi-Yun Gong, Guo-Hua Liang, Fei-Hua Wang, Shu-Zhu Tang, Ming-Hong Gu
Centromeres play an important role in ensuring the correct segregation and transmission of chromosome during mitosis and meiosis in eukaryotes. In this research, we constructed five BAC libraries for diploid wild rice with different genomes. Together with the technique of colony blot hybridization and fluorescence in situ hybridization (FISH), centromere-related BAC clones were screened and characterized from different genomes. Meanwhile, co-hybridization was detected between these clones and the five genomes...
July 2007: Yi Chuan, Hereditas
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