Sooty Mould Disease Caused by <i>Leptoxyphium kurandae</i> on Kenaf

Choi, In Young; Kang, Chan-Ho; Lee, Geon Hwi; Park, Ji Hyun; Shin, Hyeon Dong

doi:10.5941/myco.2015.43.3.347

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…This phenomenon has also been observed in sooty moulds caused by Leptoxyphium kurandae Crous & R.G. Shivas in Hibiscus cannabinus L. and Hibiscus rosa‐sinensis L., which contain extrafloral nectaries (Choi et al, 2015; Park et al, 2015), and by Capnocheirides rhododendri Kunze which occurs in Rhododendron ferrugineum L., with regard to the leaf glands (Flessa & Rambold, 2013). In H .…”

Section: Fungal Identificationmentioning

confidence: 71%

“…Shivas in Hibiscus cannabinusL. and Hibiscus rosa-sinensis L., which contain extrafloral nectaries(Choi et al, 2015;Park et al, 2015), and by Capnocheirides rhododendri Kunze which occurs in Rhododendron ferrugineum L., with regard to the leaf glands(Flessa & Rambold, 2013). In H. cannabinus, the infection starts on the leaf petiole and spreads to the veins on the adaxial and abaxial surfaces.…”

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confidence: 99%

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Sooty mould caused by Capnodium alfenasii on Azadirachta indica

Mesquita¹,

Santos²,

Oliveira

et al. 2022

Journal of Phytopathology

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In October 2020, sooty moulds were found covering the leaves of neem trees (Azadirachta indica) in Vitória da Conquista, Bahia, Brazil. Sooty moulds usually grow on honeydew secreted by insects. However, in this observation, insects were not visible on the sooty mould‐infected plants. Rather, the sooty mould grew on the host secretions. Inoculation was performed to confirm the ability of the fungus to grow on host nectaries. Based on the morphological features and phylogenetic analysis, Capnodium alfenasii was identified as the sooty mould agent. To our knowledge, this is the first report on the occurrence of this fungus on neem plants.

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Section: Fungal Identificationmentioning

confidence: 71%

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confidence: 99%

Sooty mould caused by Capnodium alfenasii on Azadirachta indica

Mesquita¹,

Santos²,

Oliveira

et al. 2022

Journal of Phytopathology

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“…Aside from the major fungal genera mentioned above that have been identified as causal agents of significant diseases in bast fiber crops, other fungal pathogens, such as Cercospora cf. flagellaris [48], Exserohilum rostratum [49], Macrophomina phaseolina [50], Sclerotinia minor [51], Micropeltopsis cannabis sp., Orbilia luteola, Curvularia cymbopogonis [52], Podosphaera xanthii [53], and Lasiodiplodia theobromae [54,55], can also cause a diversity of known or unknown diseases among bast fiber crops. The diseases include leaf spot, foliar blight, charcoal rot, sclerotinia crown rot in industrial hemp, powdery mildew on ramie, and black rot on kenaf, resulting in different degrees of damage to productivity and quality [48][49][50][51][52][53][54][55].…”

Section: Fungal Pathogens Of Bast Fiber Cropsmentioning

confidence: 99%

Molecular Diagnostics and Pathogenesis of Fungal Pathogens on Bast Fiber Crops

et al. 2020

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Bast fibers and products derived from them are undergoing a resurgence in demand in the global market. However, fungal diseases have become an important factor limiting their yield and quality, causing devastating consequences for the production of bast fiber crops in many parts of the world. Thus, there is a high demand for effective control and prevention strategies against fungal pathogens. Having rapid, specific, sensitive, and cost-effective tests that can be used for early and accurate diagnosis of disease agents is an essential step of such strategies. The objective of this study was to review the current status of research on molecular diagnosis of fungal pathogens on bast fiber crops. Our search of PubMed identified nearly 20 genera of fungal pathogens on bast fiber crops, among which the five most common genera were Colletotrichum, Pythium, Verticillium, Fusarium, and Golovinomyces. The gene regions that have been used for molecular identifications of these fungi include internal transcribed spacer (ITS), translation elongation factor 1-α (EF-1α), ß-tubulin, calmodulin (CAL), histone subunit 3 (H3), glyceraldehydes-3-phosphate dehydrogenase (GAPDH), etc. We summarize the molecular assays that have been used to identify these fungi and discuss potential areas of future development for fast, specific, and accurate diagnosis of fungal pathogens on bast fiber crops.Pathogens 2020, 9, 223 2 of 19 and control. However, conventional protocols based on morphological and physiological methods are time-consuming, require significant experience, and may not be sensitive and specific for individual pathogens [3]. Moreover, many fungal pathogens can remain latent in "sub-infection" stages with no obvious symptoms and/or in low numbers, making them difficult to detect, and causing confusion with their roles in diseases. These issues can contribute to delayed or wrong control measures.During the last three decades, to overcome these problems and minimize crop losses caused by fungal diseases, a diversity of DNA molecule-based tools has been developed for the detection and identification of fungal pathogens. These techniques include conventional polymerase chain reaction (PCR) [4], quantitative PCR (qPCR) [5,6], immunocapture-PCR (IC-PCR) [7,8], droplet digital PCR (dd-PCR) [9], loop-mediated isothermal amplification (LAMP) [10], multiplex tandem PCR [11], fluorescence in situ hybridization (FISH) [12], and DNA microarrays [3]. These methods are typically faster and more accurate than those based on colony morphology, microscopic features, and/or physiological/biochemical characters of pure fungal cultures. Indeed, methods targeting DNA sequences have been applied to detect pathogens during crops' growth, harvest and postharvest processing stages [13]. Moreover, they have also enabled a deeper understanding of microbial populations and communities associated with crops, especially the microorganisms that are difficult or impossible to cultivate in the lab. Together, technological advances and developments in DNA molecu...

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“…Antennulariellaceae, one of the seven families of sooty moulds mentioned above, has been removed from the current fungal taxonomy, and the members of this family await further morphological and molecular analyses (Hyde et al, 2013). Leptoxyphium is a relatively poorly known genus of sooty moulds in Capnodiaceae, and the new species L. glochidion and L. kurandae were identified through morphological characterization and phylogenetic analysis (Choi et al, 2015; Yang et al, 2014). The current research on sooty moulds relies mainly on isolation to obtain pure cultures, followed by analysis of the morphological characteristics and identification of DNA barcode sequences that can be used for species classification and phylogenetic analysis.…”

Section: Introductionmentioning

confidence: 99%

Identification of dominant taxa of sooty moulds and their impact on the leaf microbiome

et al. 2023

Environmental Microbiology

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Sooty moulds are a widespread group of saprophytic ascomycetes that obtain nutrients from honeydew excreted by sap‐feeding insects and coat plant tissue with mycelia. Research on sooty moulds has focused on fungal morphology and phylogeny‐based taxonomy, but little research has been conducted on the community structure. In this study, the PacBio sequencing platform was used to systematically analyse the fungal and bacterial diversity of the sooty mould community on camphor trees at two sampling sites. Six dominant sooty mould genera were identified, of which three genera of Dothideomycetes were enriched only in diseased samples, while three genera of Eurotiomycetes were present in both healthy and diseased samples. Bacterial diversity and co‐occurrence network analysis indicated that the sooty moulds had an effect on the leaf surface bacterial communities but not on the endophyte communities. There was a close correlation between the six dominant pathogenic groups and bacteria in the soot layer. Transcriptomic data from Cinnamomum camphora samples showed that the sooty moulds that did not penetrate plant cells not only affected plant photosynthesis but also induced plant defence responses. This study systematically studied the microbial community of sooty moulds, indicating the close relationship between sooty moulds and the bacterial communities.

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Sooty Mould Disease Caused by Leptoxyphium kurandae on Kenaf

Cited by 11 publications

References 7 publications

Sooty mould caused by Capnodium alfenasii on Azadirachta indica

Sooty mould caused by Capnodium alfenasii on Azadirachta indica

Molecular Diagnostics and Pathogenesis of Fungal Pathogens on Bast Fiber Crops

Identification of dominant taxa of sooty moulds and their impact on the leaf microbiome

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