Identification and characterization of microRNAs in Humulus lupulus using high-throughput sequencing and their response to Citrus bark cracking viroid (CBCVd) infection

Publication Overview
TitleIdentification and characterization of microRNAs in Humulus lupulus using high-throughput sequencing and their response to Citrus bark cracking viroid (CBCVd) infection
AuthorsMishra AK, Duraisamy GS, Matoušek J, Radisek S, Javornik B, Jakse J
TypeJournal Article
Journal NameBMC genomics
Volume17
Issue1
Year2016
Page(s)919
CitationMishra AK, Duraisamy GS, Matoušek J, Radisek S, Javornik B, Jakse J. Identification and characterization of microRNAs in Humulus lupulus using high-throughput sequencing and their response to Citrus bark cracking viroid (CBCVd) infection. BMC genomics. 2016 Nov 15; 17(1):919.

Abstract

BACKGROUND
Hop (Humulus lupulus L.) plants are grown primarily for the brewing industry and have been used as a traditional medicinal herb for a long time. Severe hop stunt disease caused by the recently discovered Citrus bark cracking viroid (CBCVd) is one of the most devastating diseases among other viroid infections in hop. MicroRNAs (miRNAs) are a class of non-coding small RNAs that play important roles in gene expression regulation. To identify miRNAs in hop and their response to CBCVd-infection, two small RNA (sRNA) libraries were prepared from healthy and CBCVd-infected hop plants and were investigated by high throughput sequencing.

RESULTS
A total of 67 conserved and 49 novel miRNAs were identified. Among them, 36 conserved and 37 novel miRNAs were found to be differentially recovered in response to CBCVd-infection. A total of 311 potential targets was predicted for conserved and novel miRNAs based on a sequence homology search using hop transcriptome data. The majority of predicted targets significantly belonged to transcriptional factors that may regulate hop leaf, root and cone growth and development. In addition, the identified miRNAs might also play an important roles in other cellular and metabolic processes, such as signal transduction, stress response and other physiological processes, including prenylflavonoid biosynthesis pathways. Quantitative real time PCR analysis of selected targets revealed their negative correlation with their corresponding CBCVd-responsive miRNAs.

CONCLUSIONS
Based on the results, we concluded that CBCVd-responsive miRNAs modulate several hormone pathways and transcriptional factors that play important roles in the regulation of metabolism, growth and development. These results provide a framework for further analysis of regulatory roles of sRNAs in plant defense mechanism including other hop infecting viroids in particular.

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This publication contains information about 1 features:
Feature NameUniquenameType
Tf0307Tf0307genetic_marker
Properties
Additional details for this publication include:
Property NameValue
Publication ModelElectronic
ISSN1471-2164
eISSN1471-2164
Publication Date2016 Nov 15
Journal AbbreviationBMC Genomics
Journal CountryEngland
LanguageEnglish
Language AbbrENG
Publication TypeJournal Article