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Colletotrichum gloeosporioides strain:FJ-1 | isolate:plant

ABSTRACT: Colletotrichum gloeosporioides strain:FJ-1 | isolate:plant Genome sequencing

PROVIDER: PRJNA1235430 | ENA |

REPOSITORIES: ENA

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Impact of exogenous caffeine on regulatory networks of microRNAs in response to Colletotrichum gloeosporioides in tea plant.

Project description:Anthracnose, caused by Colletotrichum gloeosporioides is one of the most serious diseases of tea plant [Camellia sinensis (L.) O. Kuntze]. MicroRNAs are key modulators of gene expression in defense responses and plant immunity; although, foliar application of exogenous caffeine in anthracnose disease control management has proven to be effective, miRNA-mediated regulatory mechanisms underlying caffeine-induced plant defense response to C. gloeosporioides remain unexplored in tea plant. Using high-throughput-sequencing, 24 miRNA sequencing data sets and 8 degradome data sets were generated from the susceptible cultivar Longjing43 (LJ43) and the resistant cultivar Zhongcha108 (ZC108) leaves treated with CK (Water), C. gloeosporioides-inoculation (CgI), exogenous caffeine (CN) and CgI + CN. Using sRNA sequencing, 424 conserved miRNAs and 417 novel miRNAs were identified; of these, 146 and 130 miRNAs were differentially expressed under CgI + CN treatment in the LJ43 and ZC108, respectively. Degradome sequencing identified 599 targets predicted to be cleaved by 210 conserved and 70 novel miRNAs. Majority of the annotated targets were found to involve in regulation of transcription factors, oxidation-reduction and metabolic process for plant growth and development as well as stress responses in tea plant against C. gloeosporioides stress. The expression pattern of eight miRNAs and their targets were validated by qRT-PCR, and correlation analysis of csn-miR164a_R+1_1ss21AG/NAC-17 and csn-miR396b-5p/GRF-1 showed highly significant negative R-value at 7th dpi under CgI + CN in the LJ43. This study provides important insights into the novel approach of exogenous caffeine-induced miRNAs dynamically exerts its fungicidal activity through regulating JA/ET signaling pathway, thereby accurately switch on LJ43 susceptibility nature to resistance activity against C. gloeosporioides infection.

2021-12-29 | GSE146713 | GEO

Colletotrichum gloeosporioides isolate:SN1

Project description:Colletotrichum gloeosporioides isolate:SN1 Genome sequencing

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Identification of regulatory networks of microRNAs and their targets in immunity to Colletotrichum gloeosporioides in tea plant (Camellia sinensis L.)

Project description:Anthracnose disease is caused by Colletotrichum gloeosporioides, and is common in leaves of the tea plant Camellia sinensis. MicroRNAs (miRNAs) have been known as key modulators of gene expression in defense responses; however, the role of miRNAs in tea plant during defensive responses to C. gloeosporioides remains unexplored. Six miRNA sequencing data sets and two degradome data sets were generated from C. gloeosporioides-inoculated and control tea leaves. A total of 485 conserved and 761 novel miRNAs were identified. Of those, 239 known and 369 novel miRNAs exhibited significantly differential expression under C. gloeosporioides stress. 1134 and 596 mRNAs were identified as targets of 389 and 299 novel and conserved miRNAs by degradome analysis, respectively. The expression levels of twelve miRNAs and their targets were validated by quantitative real-time PCR. The predicted targets of five interesting miRNAs were further validated through 5'RLM-RACE. Furthermore, Gene Ontology and metabolism pathway analysis revealed that most of the target genes were involved in translation, carbohydrate metabolism and signal transduction pathways. This study enriches the resources of defense-responsive miRNAs and their targets in C. sinensis, and thus, provides novel insights into the miRNA-mediated regulatory mechanisms underlying immunity responses to biotic stress in tea plant.

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Project description:Colletotrichum gloeosporioides isolate:DFW03-B Raw sequence reads