First Report of <i>Epicoccum mackenziei</i> Causing Dark Brown Spot of Tea Leaf in Guizhou Province, Southwestern China

Zhang, J.; Yin, Qiaoxiu; Jiang, Shilong; Li, D. X.; Tang, Qin; Zhang, Yongping; Ma, Y. L.; Li, P. Y.; Wang, Yao; Wang, D. L.; Chen, Zhuo

doi:10.1094/pdis-10-22-2372-pdn

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…It was found as the sexual morph in nature and as chlamydospores in culture. Zhang et al (2023) first reported that E. mackenziei caused dark brown spot of tea leaf in China. In the present study, two strains were isolated from healthy tea plant leaves.…”

Section: Resultsmentioning

confidence: 99%

Didymellaceae species associated with tea plant (Camellia sinensis) in China

Wang,

Tu,

Chen

et al. 2024

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Tea plant is one of the most important commercial crops worldwide. The Didymellaceae fungi can cause leaf blight disease of tea plant. In this study, 240 isolates were isolated from tea plant leaves of 10 provinces in China. Combined with multi-locus (ITS, LSU, RPB2 and TUB2) phylogenetic analysis and morphological characteristics, these isolates were identified as 25 species of six genera in Didymellaceae, including 19 known species Didymella coffeae-arabicae, D. pomorum, D. segeticola, D. sinensis, Epicoccum catenisporum, E. dendrobii, E. draconis, E. italicum, E. latusicollum, E. mackenziei, E. oryzae, E. poaceicola, E. rosae, E. sorghinum, E. tobaicum, Neoascochyta mortariensis, Paraboeremia litseae, Remotididymella anemophila and Stagonosporopsis caricae, of which 15 species were new record species and six novel species, named D. yunnanensis, E. anhuiense, E. jingdongense, E. puerense, N. yunnanensis and N. zhejiangensis. Amongst all isolates, D. segeticola was the most dominant species. Pathogenicity tests on tea plant leaves showed that E. anhuiense had the strongest virulence, while E. puerense had the weakest virulence. Besides, D. pomorum, D. yunnanensis, E. dendrobii, E. italicum, E. jingdongense, E. mackenziei, E. oryzae, E. rosae, E. tobaicum, N. mortariensis, N. yunnanensis, N. zhejiangensis and R. anemophila were non-pathogenic to the tea plant.

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Section: Resultsmentioning

confidence: 99%

Didymellaceae species associated with tea plant (Camellia sinensis) in China

Wang,

Tu,

Chen

et al. 2024

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Transcriptome Profiling Data of Tea Leaves During Infection by the Dark Brown Tea Leaf Spot Pathogen Epicoccum mackenziei

et al. 2023

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Dark brown leaf spot on tea (Camellia sinensis (L.) O. Kuntze) caused by Epicoccum mackenziei Jayasiri, Camporesi & K. D. Hyde has caused the loss in the yield and quality of tea leaves in Guizhou Province, southwest China. No research has been published on the gene expression profiles of tea leaves during the infection by E. mackenziei. In this study, we report the high-quality transcriptome sequencing of tea genes during infection, using high-throughput next-generation sequencing on the Illumina Novaseq™ 6000 platform. The infection resulted in significantly up- or down-regulated expression of the 960 or 397 differentially expressed mRNAs (DEmRNAs) from tea leaves, respectively. The DEmRNAs were annotated using the gene ontology and the Kyoto Encyclopedia of Genes and Genomes databases. The expression of DEmRNA peroxidase 21 (TEA000222.1) was upregulated in response to infection by the pathogen and was enriched in the term of defense response to fungi at the biological process aspect. Expression of 26 or 13 of the tea DEmRNAs enriched in the pathways of plant–pathogen interaction were up- or downregulated, respectively, such as the genes WRKY transcription factor 1 (TEA028099.1), probable disease resistance protein At4g27220 (TEA018574.1), and serine/threonine-protein kinase CDL1 (TEA006388.1) in which were downregulated. This comprehensive gene expression profiling study of tea leaves infected by this fungal pathogen will provide a valuable resource for future research on the identification of the host genes associated with the response to pathogen challenge, and ultimately with disease resistance in the host.

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Advances in CircRNAs in the Past Decade: Review of CircRNAs Biogenesis, Regulatory Mechanisms, and Functions in Plants

Zhang,

Ma,

Naz

et al. 2024

Genes

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Circular RNA (circRNA) is a type of non-coding RNA with multiple biological functions. Whole circRNA genomes in plants have been identified, and circRNAs have been demonstrated to be widely present and highly expressed in various plant tissues and organs. CircRNAs are highly stable and conserved in plants, and exhibit tissue specificity and developmental stage specificity. CircRNAs often interact with other biomolecules, such as miRNAs and proteins, thereby regulating gene expression, interfering with gene function, and affecting plant growth and development or response to environmental stress. CircRNAs are less studied in plants than in animals, and their regulatory mechanisms of biogenesis and molecular functions are not fully understood. A variety of circRNAs in plants are involved in regulating growth and development and responding to environmental stress. This review focuses on the biogenesis and regulatory mechanisms of circRNAs, as well as their biological functions during growth, development, and stress responses in plants, including a discussion of plant circRNA research prospects. Understanding the generation and regulatory mechanisms of circRNAs is a challenging but important topic in the field of circRNAs in plants, as it can provide insights into plant life activities and their response mechanisms to biotic or abiotic stresses as well as new strategies for plant molecular breeding and pest control.

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First Report of Epicoccum mackenziei Causing Dark Brown Spot of Tea Leaf in Guizhou Province, Southwestern China

Cited by 3 publications

References 10 publications

Didymellaceae species associated with tea plant (Camellia sinensis) in China

Didymellaceae species associated with tea plant (Camellia sinensis) in China

Transcriptome Profiling Data of Tea Leaves During Infection by the Dark Brown Tea Leaf Spot Pathogen Epicoccum mackenziei

Advances in CircRNAs in the Past Decade: Review of CircRNAs Biogenesis, Regulatory Mechanisms, and Functions in Plants

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