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Analysis of microRNAs, phased small interfering RNAs and their functions in Rosa rugosa Thunb

ABSTRACT: Analysis of microRNAs, phased small interfering RNAs and their functions in Rosa rugosa Thunb

PROVIDER: PRJNA450264 | ENA |

REPOSITORIES: ENA

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Analysis of microRNAs, phased small interfering RNAs and their functions in Rosa rugosa Thunb

Project description:MicroRNAs (miRNAs) are small non-coding RNAs that play important roles by regulating other genes. Rose, Rosa rugosa Thunb., is an important ornamental and edible plant, yet there are only a few studies on the miRNAs and their functions in rose. Here we carried out computational and experimental analysis of miRNAs, phased small interfering RNAs (phasiRNAs) and mRNAs in rose by analyzing 10 small RNA sequencing profiles from roots, petals, pollens, stamens, and leaves and 4 RNA-seq profiles in leaves and petals of rose. To identify the targets of miRNAs and phasiRNAs, we produced a degradome profile for rose leaf which is analyzed using the SeqTar algorithm. This study identified 25 conserved pre-miRNAs, of which 24 have not been reported previously. We also found 22 novel pre-miRNAs. Three hundred and thirty nine 21 nucleotide (nt) PHAS loci, and forty nine 24 nt PHAS loci were also identified. We identified more than 19,000 putative targets of the conserved miRNAs/tasiRNAs using a criteria of less than 4 mismatches between miRNA and targets. Among these targets, 592 have shown significant accumulation of degradome reads. Our results demonstrate that the miR482 family triggers the generations of phasiRNAs by targeting nucleotide-binding, leucine-rich repeat (NB-LRR) disease resistance genes in rose. Our results also suggest that the deregulated genes in leaves and petals are significantly enriched in GO and KEGG pathways related to metabolic processes and photosynthesis. These results significantly enhanced our knowledge of the miRNAs and phasiRNAs, as well as their potential functions in rose.

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Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb [degradome]

Project description:MicroRNAs (miRNAs) are small non-coding RNAs that regulate target mRNAs by inducing degradation or preventing translation of their target mRNAs. Rose, Rosa rugosa Thunb., is an important ornamental and edible plant, yet there are only a few studies on the miRNAs of rose. Here we carried out computational and experimental analysis of miRNAs and phased small interfering RNAs (phasiRNAs) in rose by analyzing 10 small RNA profiles from roots, petals, pollens, stamens, and leaves. To identify the targets of miRNAs and phasiRNAs, we generated a degradome profile for rose leaf which is analyzed using the SeqTar algorithm. This study identified 25 conserved pre-miRNAs, of which 24 have not been reported previously. We also found 22 novel pre-miRNAs. Three hundred and thirty nine 21 nucleotide (nt) PHAS loci, and forty nine 24 nt PHAS loci were also identified. We identified more than 4000 putative targets of the conserved miRNAs using a criteria of less than 4 mismatches between miRNA and targets. Among these targets, at least 171 have shown significant accumulation of degradome reads. Our results demonstrate that the miR482 family triggers the generations of phasiRNAs by targeting nucleotide-binding, leucine-rich repeat (NB-LRR) disease resistance genes in rose. These results significantly enhanced our knowledge of the miRNAs and phasiRNAs, as well as their potential functions in rose.

2019-12-31 | GSE110494 | GEO

Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb [ncRNA-seq]

2019-12-31 | GSE110490 | GEO

Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb

Project description:Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb

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Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb [degradome]

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Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb [ncRNA-seq]

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Project description:Rosa rugosa overview

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Identification and comprehensive analysis of microRNAs and phased small interfering RNAs in Rosa rugosa Thunb

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-12-31 | GSE110542 | GEO

Rosa rugosa cultivar:Bao White

Project description:Rosa rugosa cultivar:Bao White Raw sequence reads

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Phased secondary small interfering RNAs in Panax notoginseng

Project description:Recent results demonstrated that either non-coding or coding genes generate phased secondary small interfering RNAs (phasiRNAs) guided by specific miRNAs. Till now, there is no studies for phasiRNAs in Panax notoginseng (Burk.) F.H. Chen (P. notoginseng), an important traditional Chinese herbal medicinal plant species. Here we performed a genome-wide discovery of phasiRNAs and its host PHAS loci in P. notoginseng by analyzing small RNA sequencing profiles. Degradome sequencing profile was used to identify the trigger miRNAs of these phasiRNAs and potential targets of phasiRNAs. We also used RLM 5'-RACE to validate some of the identified phasiRNA targets. After analyzing 24 small RNA sequencing profiles of P. notoginseng, 204 and 90 PHAS loci that encoded 21 and 24 nucleotide (nt) phasiRNAs were identified. Furthermore, we found that phasiRNAs produced from some pentatricopeptide repeat-contain (PPR) genes target another layer of PPR genes as validated by both the degradome sequencing profile and RLM 5'-RACE analysis. We also find that miR171 with 21 nt triggers the 21 nt phasiRNAs from its conserved targets. We validated that some phasiRNAs generated from PPRs are functional by targeting other PPRs in trans. These results provide the first set of PHAS loci and phasiRNAs in P. notoginseng, and enhance our understanding of PHAS in plants.

2018-02-14 | GSE98118 | GEO

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