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Genome-wide identification of alternate bearing-associated miRNA in the olive tree (Olea europaea)

ABSTRACT: 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

ORGANISM(S): Olea europaea

SUBMITTER: mine turktas

PROVIDER: E-GEOD-42978 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide identification of alternate bearing-associated miRNA in the olive tree (Olea europaea)

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

Nutrition metabolism plays an important role in the alternate bearing of the olive tree (Olea europaea L.)

Project description:We carried out genome wide transcriptome analyses in different organs and developmental stages of the olive tree using the NimbleGen Array oligonucleotide probe sets. Cluster analyses of the genes showed that samples collected from different organs could be sorted into separate groups. The nutritional control had a particularly remarkable impact on the alternate bearing for O. europaea, as shown by the differential expressions of transcripts under different developmental phases and organs Six sample sets were prepared for array analyses: i) unripe fruit (UF); ii) ripe fruit (RF); iii) “on-year” mature leaf (November sample, ON-M); iv) “on-year” juvenile leaf (July sample, ON-J); v) “off-year” mature leaf (November samples, OFF-M); and vi) “off-year” juvenile leaf (July sample, OFF-J).

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2013-03-05 | E-GEOD-44826 | biostudies-arrayexpress

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Project description:High-throughput sequence analysis of small RNAs of TYLCV-tolerant (containing tolerance gene Ty-1) and susceptible varieties indicated that miRNA-like vsRNAs and secondary vsiRNAs are mainly contributed to hotpots. Interestingly, various characteristics of vsRNAs among each sample are consistent, but in different number of expression; Deep sequencing of degradome provided evidence for the function of vsRNAs-mediated viral transcripts slicing; And bisulfite sequencing PCR suggested the geminivirus DNA methylation induced by vsRNAs. Comparison of the expression quantity and trend of viral DNA, mRNA and vsRNA inferred that the quantity of vsRNAs is significantly corresponding to the expression level of viral mRNA. Nevertheless, vsRNAs had finite effect on inhibition of virus replication and expression. Here, we also speculated that by RDR catalysis of vsRNAs amplification, the tolerance gene Ty-1 may take an effective inhibition of viral transcription at the beginning of TYLCV infection. Examination of 6 different sRNA and 4 degradome library in 2 tomato material. The main result of our paper is distinguish the host plant sRNA and viral-derived sRNA from the .fa files (MMS_21dpi, 30dpi and TY1S_21dpi, 30dpi).

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