Olea europaea subsp. europaea
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ABSTRACT:
PROVIDER: PRJNA906028 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:We aimed to identify miRNA regulated by alternate bearing in O. europaea. For this purpose, six olive (Olea europaea L. )(Ayvalık variety) small RNA libraries were constructed from fruits (ripe and unripe) and leaves ("on-year" and "off-year" mature -leaven in November and juvenile - leaven in July plants) and sequenced by high-throughput Illumina sequencing. Bioinformatics analyses of 93,526,915 reads identified 135 conserved miRNA, belonging to 22 miRNA families in olive tree. In addition, 38 novel miRNA were discovered in the datasets. Expression of olive tree miRNA varied greatly among the six libraries, indicating contribution of diverse miRNA in balancing between reproductive and vegetative phases. The differential expression of miRNA was evaluated on the basis of the developmental phase of the samples. Sequences of six olive miRNAs (Olea europaea L. )(Ayvalık variety) plants (ripe and unripe fruits, leaves of mature and juvenile plants of both "on-year" and "off-year") were generated by Illumina sequencing
2012-12-18 | E-GEOD-42978 | biostudies-arrayexpress
Project description:We aimed to identify miRNA regulated by alternate bearing in O. europaea. For this purpose, six olive (Olea europaea L. )(Ayvalık variety) small RNA libraries were constructed from fruits (ripe and unripe) and leaves ("on-year" and "off-year" mature -leaven in November and juvenile - leaven in July plants) and sequenced by high-throughput Illumina sequencing. Bioinformatics analyses of 93,526,915 reads identified 135 conserved miRNA, belonging to 22 miRNA families in olive tree. In addition, 38 novel miRNA were discovered in the datasets. Expression of olive tree miRNA varied greatly among the six libraries, indicating contribution of diverse miRNA in balancing between reproductive and vegetative phases. The differential expression of miRNA was evaluated on the basis of the developmental phase of the samples.
2012-12-18 | GSE42978 | GEO
Project description:The ripening process of olive fruits is associated with chemical and/or enzymatic specific transformations making them particularly attractive to animals and humans. Usually, there is a progressive chromatic change characterized by a final red-brown color of both epidermis and mesocarp. This event has an exception in the ‘Leucocarpa’ cultivar, in which we observed the destabilization in the equilibrium between the metabolism on chlorophyll and that of the other pigments, particularly the anthocyanins, whose switch-off during maturation promotes the white coloration of the fruits. Recently, transcription profiling of ripening olives from ‘Leucocarpa’ and ‘Cassanese’ cultivars, through an Illumina RNA-seq approach, has provided some information about genes involved in fruit maturation as flavonid and anthocyanin transcripts. To study the possible gene differences involved in flavonoids and anthocyanins biosynthetic pathways during ripening possibly caused by small nuclear RNA (snRNA) in olive drupes, the snRNA libraries of fruit ripening from ‘Leucocarpa’ and ‘Cassanese’ were constructed with RNAs from drupes at 100 and 130 DAF (Days After Flowering) and sequenced by Illumina approach. Comparing sequence information, 130 conserved microRNAs (miRNA) in the Viridiplantae were detected belonging 14 miRNA families. For the remaining read not-matched with known miRNAs in the Viridiplantae, we combined secondary structure and minimum free energy to discover novel olive miRNAs. Based on these analyses, 492 miRNAs were considered as putative novel. To increase insights into the functions of known and putative novel miRNA in olive, putative target genes were computationally predicted by alignment with the olive drupe transcripts obtained from the same samples. A total of 32 and 186 transcripts were predicted as targets of 130 known and 492 putative novel miRNA, respectively. The identified target genes are involved in a broad range of biological processes. Interestingly, some genes involved in negative regulation of anthocyanin metabolic process, were identified as target of miR168 suggesting that this miRNA family is likely operative during color transition in olive.
2019-08-11 | GSE104763 | GEO
Project description:A comparative transcriptomics approach was used as a tool to unravel gene regulatory networks underlying salinity response in olive trees by simulating as much as possible olive growing conditions in the field. Specifically, we investigated the genotype-dependent differences in the transcriptome response of two olive cultivars, a salt tolerant and a salt sensitive. A 135 day long comparative salinity experiment was conducted using one year old trees exposed to NaCl stress for 90 days followed by 45 days of post-stress period. Total RNA was extracted from the root samples after 15, 45 and 90 days of NaCl-treated and un-treated olive trees as well as after 15 and 45 days of post-treatment period and used for microarray hybridizations using a loop design. Hierarchical clustering of differentially expressed transcripts revealed two major, distinct clusters for each cultivar. Despite the limited number of probe set, transcriptional regulatory networks were constructed for the salt-tolerant and salt-sensitive cultivar. The comparison of the salt responsive transcriptional regulatory networks in olive with those reported for Arabidopsis suggests that a tree species might respond in a similar to Arabidopsis way at the transcriptome level under salinity stress.
2012-11-20 | GSE36197 | GEO
Project description:A transcriptomics approach was used as a tool to unravel gene regulatory network underlying salinity response in a salt-tolerant olive cultivar (cv. Kalamon) by simulating as much as possible olive growing conditions in the field. A 135 day long salinity experiment was conducted using one year old trees exposed to NaCl stress for 90 days followed by 45 days of post-stress period. Total RNA was extracted from the root samples after 15, 45 and 90 days of NaCl-treated and un-treated olive trees as well as after 15 and 45 days of post-treatment period and used for microarray hybridizations using a loop design. Hierarchical clustering of differentially expressed transcripts revealed two major, distinct clusters. Despite the limited number of probe set, a transcriptional regulatory networks was constructed for the salt-tolerant cultivar.
2012-11-20 | GSE36196 | GEO
Project description:Olive (Olea europaea) cv.Kalamon: Control vs Salt-treated
| PRJNA155753 | ENA
Project description:Olive (Olea europaea) cv.Chondrolia Chalkidikis: Control vs NaCl-treated
| PRJNA155755 | ENA
Project description:The transcriptional response to the olive fruit fly (Bactrocera oleae) reveals extended differences between tolerant and susceptible olive (Olea europaea L.) varieties
| PRJNA321198 | ENA