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Genome-wide screening and characterization of long non-coding RNAs involved in flowering development of citrus (Poncirus trifoliata L. Raf.) by RNA sequencing

ABSTRACT: To investigate the role of lncRNAs in citrus flowering, paired-end strand-specific RNA sequencing was performed between precocious trifoliate orange and its wild-type. Total 6,584 potential lncRNAs were identified, 51.6% of which came from intergenic regions. It was also observed that 555 lncRNAs were significantly up-regulated, and 276 lncRNAs were down-regulated in precocious trifoliate orange, indicating that lncRNAs could be involved in the regulation of citrus flowering.

ORGANISM(S): Citrus trifoliata

PROVIDER: GSE84443 | GEO | 2017/06/12

SECONDARY ACCESSION(S): PRJNA329194

REPOSITORIES: GEO

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Identification and comparative profiling of microRNAs in an early flowering mutant of trifoliate orange (Poncirus trifoliata (L.) Raf.) and its wild type by genome-wide high throughput sequencing

Project description:Solexa sequencing was performed at different developmental stages both an early flowering mutant of trifoliate orange (precocious trifoliate orange, Poncirus trifoliata L. Raf.) and its wild-type in this study, resulting in the obtainment of a total of 143 known miRNAs belonging to 99 families and 75 novel miRNAs in four libraries. A total of 317 potential target genes were predicted based on the 50 novel miRNAs families, GO and KEGG annotation revealed that high ranked miRNA-target genes are those implicated in diverse cellular processes in plants, including development, transcription, protein degradation and cross adaptation. To characterize those miRNAs expressed at the juvenile and adult development stages of the mutant and its wild-type, further analysis on the expression profiles of several miRNAs through real-time PCR was performed. The results revealed that most miRNAs were down-regulated at adult stage compared with juvenile stage both the mutant and its wild-type. These results indicate that both conserved and novel miRNAs may play important roles in citrus growth and development, stress responses and other physiological processes.

2016-01-25 | GSE37115 | GEO

miRNA expression data of shoot meristems of trifoliate orange

Project description:In 1976, a spontaneous mutant derived from Poncirus trifoliata (L.) Raf with short juvenile phase, namely, precocious trifoliate orange, was found in Yichang, Hubei province, China. Compared with 6 to 8 years of the wild-type trifoliate orange, almost all of the seedlings germinated from precocious trifoliate orange only have 1 to 2 years’ juvenile period, and 20% seedlings even flowered in the year after germination. Therefore, precocious trifoliate orange is an ideal material for studying the role of miRNAs involved in citrus juvenile and adult developmental stages. To characterize these miRNAs expressed at the juvenile and adult development stages of citrus, Affymetrix miRNA arrays were used to generate miRNA profiles of shoot meristems of trifoliate orange, the results revealed that some miRNAs were down-regulated expressed at adult stage compared with juvenile stage. Detailed comparison of the expression patterns of miRNAs and corresponding target genes revealed the negative correlation between them, while few of them are positively correlated.

2016-03-04 | GSE28363 | GEO

Transcriptome analysis the citrus rootstocks of Ziyang xiangcheng (Citrus junos Sieb.) and Poncirus trifoliate (Poncirus trifoliata (L.) Raf.) under saline-alkali stress

Project description:Salt stress, especially saline-alkali stress, has seriously negative effect on citrus production. Ziyang xiangcheng (Citrus junos Sieb.) (Cj) has been reported as a saline-alkali stress and iron deficiency tolerant citrus rootstock. However, the molecular mechanism of its saline-alkali stress tolerance is still not clear. Two citrus rootstocks and one navel orange scion, Cj, Poncirus trifoliate (Poncirus trifoliata (L.) Raf.) (Pt) and ‘Lane Late’ navel orange (Citrus sinensis (L.) Osb.) (LL), were used in this study. The grafted materials Cj+LL and Pt+LL grown in calcareous soil were used to identify genes and pathways responsive to saline-alkali stress using RNA-seq. The seedlings of Cj and Pt grown in the solutions with different gradient pH value were used to perform a supplement experiment. Comprehensively analyzing the data of RNA-seq, physiology and biochemistry, agronomic traits and mineral elements of Cj+LL, Pt+LL, Cj and Pt, several candidate pathways and genes were identified to be highly regulated under saline-alkali stress. Here, we propose citrate is important for the tolerance to iron deficiency and the jasmonate (JA) biosynthesis and signal transduction pathway may play a crucial role in tolerance to saline-alkali stress in citrus by interacting with other plant hormones, calcium signaling, ROS scavenging system and lignin biosynthesis.

2018-07-06 | GSE98996 | GEO

Indicated that null segregants lacking transgene have been obtained from the progeny of the backcross of transformants

Project description:Citrus disease resistance breeding has been advanced to introduce CTV resistance of trifoliate orange to citrus. Because the quality of the fruit of trifoliate ogate was low, backcross with citrus was necessary. In the case of citrus, it takes several years from flowering to obtaining next-generation seeds. Therefore, we generated transformants for the early flowering genes (citrus FLOWERING LOCUS T: CiFT) using CiFT co-expression vector construct and promoted generation. In Japan, it is difficult to plant transformants in the field. Therefore, it was decided to select null segregant lacking transgene from backcross progenies. In order to prove that the transgene has been completely removed, it is necessary to prove that no vector conract is present on the genome. Tthis matter was proved by CGH analysis.

2019-07-30 | GSE135027 | GEO

Global gene expression of Poncirus trifoliata, Citrus sunki and their hybrids under infection of Phytophthora parasitica

Project description:A microarray containing 62,876 unigenes selected from CitEST database and prepared by Nimblegen Systems was used for identifying candidate resistance genes against P. parasitica at 48 hours after inoculation Four resistant and four susceptible F1 hybrids were selected from the population derived from the cross between Citrus sunki Hort. ex. Tan. and Poncirus trifoliate (L.) Raf cv. Rubidoux, respectively susceptible and resistant to P. parasitica. It was proposed that differentially expressed genes between resistant and susceptible hybrids and their parents provide essential candidates for identifying transcripts involved in disease resistance A total of 62,876 unigenes (18,712 unigenes of Citrus sinensis; 31,583 unigenes of Citrus reticulata and 12,581 unigenes of Poncirus trifoliate) selected from CitEST database assembled from the EST submitted to NCBI (Genebank accession number EY649559 to EY842485) were used to construct genome-wide oligonucleotide cDNA microarrays by Roche NimbleGen Systems using a multi-step approach to select probes with optimal predicted hybridization characteristics. Three probes were selected per unigene, comprising a probe set, and each probe set is represented on the final array by two replicates. All probes were designed as ‘‘perfect match’’ (PM) oligonucleotides (oligos).

2010-02-19 | E-GEOD-20412 | biostudies-arrayexpress

Deep sequencing-based characterization of transcriptome and transcriptional profiling of trifoliate orange (Poncirus trifoliata (L.) Raf.) in response to cold stress

Project description:A large number of high-quality transcripts were fistly obtained by sequencing the pooled RNAs from trifoliate orange under different stress treatments (cold, salt, drought). Four cold-treated libraries were further mapped to the assembled transcriptome, leading to identification of more 5,000 DEGs. Plant hormone signal transduction, plant-pathogen interaction, and secondary metabolism were most significantly enriched in the DEGs. A total of 60 transcription factors were revealed to be cold responsive.n addition, a number of genes involved in catabolism and signaling of hormones, such as abscisic acid, ethylene and gibberellin, were either up- or down-regulated under cold stress. These data provide valuable information for elucidating transcriptomic reprogramming and underlying mechanisms of trifoliate orange in response to cold and underpin exploitation of genes of interest in the future.

2017-02-09 | GSE67439 | GEO

Global gene expression of Poncirus trifoliata, Citrus sunki and their hybrids under infection of Phytophthora parasitica

2010-02-20 | GSE20412 | GEO

Citrus trifoliata cultivar:Trifoliate orange

Project description:Citrus trifoliata cultivar:Trifoliate orange Transcriptome or Gene expression

| PRJNA487128 | ENA

Citrus trifoliata

Project description:Deep sequencing discovery of novel and conserved microRNAs in trifoliate orange (Citrus trifoliata)

| PRJNA128941 | ENA

Identifying the genome-wide genetic variation between precocious trifoliate orange and its wild type and developing new markers for genetics research

Project description:To increase our understanding of the genes involved in flowering in citrus, we performed genome resequencing of an early flowering trifoliate orange mutant (Poncirus trifoliata L. Raf.) and its wild type. At the genome level, 3,932,628 single nucleotide polymorphisms (SNPs), 1,293,383 insertion/deletion polymorphisms (InDels), and 52,135 structural variations (SVs) were identified between the mutant and its wild type based on the citrus reference genome. Based on integrative analysis of resequencing and transcriptome analysis, 233,998 SNPs and 75,836 InDels were also identified between the mutant and its wild type at the transcriptional level. Also, 272 citrus homologous flowering-time transcripts containing genetic variation were also identified. GO and KEGG annotation revealed that the transcripts containing the mutant and the wild-type-specific InDel were involved in diverse biological processes and molecular function. Among these transcripts, there were 131 transcripts that were expressed differently in the two genotypes. When 268 selected InDels were tested on 32 genotypes of the three generas of Rutaceae for the genetic diversity assessment, these InDel-based markers showed high transferability. This work provides important information that will allow a better understanding of the citrus genome and that will be helpful for dissecting the genetic basis of important traits in citrus.

2016-05-05 | GSE78810 | GEO

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