Reservoir of cultivated rice pathogens in wild rice in Australia

Pak, Dolar; You, Ming Pei; Lanoiselet, Vincent; Barbetti, Martin J.

doi:10.1007/s10658-016-1002-y

Cited by 21 publications

(14 citation statements)

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“…After 7 days of incubation, the lesion area on barley leaves was calculated by the Assess© Software (American Phytopathological Society -APS). In rice, the severity of blast symptoms was estimated after 8 days by identifying 5 levels of disease severity (DS0-5) (Supplementary Figure 1) and a Disease Severity Index (DSI) was calculated as reported in Pak et al (2017). The percentage of reduction of disease severity in comparison to the control not treated with the peptide was calculated as follows: (DSIcontrol -DSItreatment/DSIcontrol)×100.…”

Section: Peptide Treatment and Fungal Inoculation On Barley And Rice Leavesmentioning

confidence: 99%

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

et al. 2021

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Eco-friendly analogs of Trichogin GA IV, a short peptaibol produced by Trichoderma longibrachiatum, were assayed against Pyricularia oryzae, the causal agent of rice blast disease. In vitro and in vivo screenings allowed us to identify six peptides able to reduce by about 70% rice blast symptoms. One of the most active peptides was selected for further studies. Microscopy analyses highlighted that the treated fungal spores could not germinate and the fluorescein-labeled peptide localized on the spore cell wall and in the agglutinated cytoplasm. Transcriptomic analysis was carried out on P. oryzae mycelium 3 h after the peptide treatment. We identified 1,410 differentially expressed genes, two-thirds of which upregulated. Among these, we found genes involved in oxidative stress response, detoxification, autophagic cell death, cell wall biogenesis, degradation and remodeling, melanin and fatty acid biosynthesis, and ion efflux transporters. Molecular data suggest that the trichogin analogs cause cell wall and membrane damages and induce autophagic cell death. Ultrastructure observations on treated conidia and hyphae confirmed the molecular data. In conclusion, these selected peptides seem to be promising alternative molecules for developing effective bio-pesticides able to control rice blast disease.

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Section: Peptide Treatment and Fungal Inoculation On Barley And Rice Leavesmentioning

confidence: 99%

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

et al. 2021

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“…(Tilley and Walker, 2002) and Pandanus amaryllifolius (Meepagala et al, 2016), while C. intermedius was isolated from leaves of Musa sp. (Zakaria and Aziz, 2018), Oryza australiensis (Pak et al, 2017) and Sapindus saponaria (Garcia et al, 2012). In addition, P. prosopidis was found in leaves of Vellozia gigantea (Ferreira et al, 2017); P. columnaris (D. columnaris) in leaves of Olea europaea (Martins et al, 2016); M. nawae in Diospyros kaki (Berbegal et al, 2011;Bassimba et al, 2017) and P. stromaticum in Syzygium malaccense (Silveira et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Filtrates from cultures of endophytic fungi isolated from leaves of Copaifera oblongifolia (Fabaceae) affect germination and seedling development differently

et al. 2023

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Interactions between endophytic fungi (EFs) and their host plants range from positive to neutral to negative. The results of such interactions can vary depending on the organ of the infected host plant. EFs isolated from the leaves of some species of plants have potential for use as agents to inhibit seed germination and control invasive plants. The objectives of this study were to identify EFs present in the leaves of Copaifera oblongifolia and to evaluate the role of these fungi in seed germination and seedling development. A total of 11 species of EFs were isolated, which were identified using the internal transcribed spacers (ITS) sequence of the nuclear ribosomal DNA. The isolated species of EFs are generalists and probably are transmitted horizontally. Laboratory tests revealed that filtrates of these fungal isolates differently affect seed germination and seedling development of C. oblongifolia. The species Curvularia intermedia, Neofusicoccum parvum, Pseudofusicoccum stromaticum and Phomopsis sp. negatively affected seed germination, with N. parvum standing out for its negative effects, inhibiting seedling germination and survival in 89 and 222%, respectively. In addition, Cochliobolus intermedius negatively affected seedling development. Thus, the combined use of N. parvum and C. intermedius, or products from the metabolism of these microorganisms, in the control of invasive plants deserves attention from future studies.

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“…Although pathogens in wild species of berries in Mexico have been scarcely studied, some wild hosts were referenced (Table 3). These plants might be capable of harboring pathogens that could serve as inoculum source reservoirs for the infection of nearby crops (Grünwald et al 2001;Pak et al 2017).…”

Section: Discussionmentioning

confidence: 99%

Pathogenic Microorganisms Infecting Berries in Mexico

Garay‐Serrano¹

2021

IJAB

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Mexico is one of the major producers of berries worldwide and ranks third amongst the principal exporters of these fruits. However, the presence of diseases in crops of blueberry, blackberry, strawberry, and raspberry in production areas of the country, has a negative impact in production yields. In this work, we presented a revision of all pathogens reported for these berries during the last 64 years in Mexico. Data on the different groups of pathogens including bacteria, stramenopila, and fungi, as well as location and references, are listed for the several types of berries produced. The pathogen species names were actualized according to the current taxonomic status following the specialized nomenclatural websites. Perspectives for future research are discussed. © 2021 Friends Science Publishers

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Reservoir of cultivated rice pathogens in wild rice in Australia

Cited by 21 publications

References 50 publications

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

Transcriptomic and Ultrastructural Analyses of Pyricularia Oryzae Treated With Fungicidal Peptaibol Analogs of Trichoderma Trichogin

Filtrates from cultures of endophytic fungi isolated from leaves of Copaifera oblongifolia (Fabaceae) affect germination and seedling development differently

Pathogenic Microorganisms Infecting Berries in Mexico

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