Identification and characteristics of <i>Stagonosporopsis cucurbitacearum</i> pathogenic factors influencing pumpkin seeding survival in north‐east China

Zhao, Qian; Wu, Jianzhong; Zhang, Liyan; Xu, Luping; Yan, Chao; Gong, Zhenping

doi:10.1111/jph.12772

Cited by 10 publications

(7 citation statements)

References 70 publications

(68 reference statements)

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“…Stagonosporopsis vannaccii Baroncelli, Cafà, Castro, Boufleur and Massola was reported from leaf spots on Crassocephalum crepidioides in Guangxi [ 66 ] while Stagonosporopsis cucurbitacearum (Fr.) Aveskamp, Gruyter and Verkley are the cause of pumpkin gummy stem blight, which is one of the most devastating pumpkin crop diseases in North-East China [ 67 ]. Stagonosporopsis pogostemonis M. Luo, Y.H.…”

Section: Discussionmentioning

confidence: 99%

Plant-Associated Novel Didymellaceous Taxa in the South China Botanical Garden (Guangzhou, China)

Kularathnage

Senanayake

Wanasinghe

et al. 2023

JoF

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The South China Botanical Garden (SCBG), one of the largest and oldest botanical gardens in China, conserves important plant germplasms of endangered species. Therefore, ensuring tree health and studying the associated mycobiome of the phyllosphere is essential to maintaining its visual aesthetics. During a survey of plant-associated microfungal species in SCBG, we collected several coelomycetous taxa. Phylogenetic relationships were evaluated based on the analyses of ITS, LSU, RPB2, and β-tubulin loci. The morphological features of the new collections were compared with those of existing species, emphasizing close phylogenetic affinities. Based on the morphological comparisons and multi-locus phylogeny, we introduce three new species. These are Ectophoma phoenicis sp. nov., Remotididymella fici-microcarpae sp. nov., and Stagonosporopsis pedicularis-striatae sp. nov. In addition, we describe a new host record for Allophoma tropica in the Didymellaceae. Detailed descriptions and illustrations are provided along with notes comparing allied species.

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Section: Discussionmentioning

confidence: 99%

Plant-Associated Novel Didymellaceous Taxa in the South China Botanical Garden (Guangzhou, China)

Kularathnage

Senanayake

Wanasinghe

et al. 2023

JoF

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“…All these taxa are known to have the ability to survive in the environment outside of their host plants and infect a broad range of plant species [ 47 , 72 – 74 ]. Moreover, Altenaria and Stagonosporopsis are known to cause disease in pumpkin and maize; these crops were previously grown at the sampling sites [ 75 , 76 ] and may have thus facilitated an enrichment of the pathogens in the liverwort thalli. Only little knowledge on pathogenic microbes that cause diseases in liverworts is available [ 77 ].…”

Section: Discussionmentioning

confidence: 99%

The microbiome of Riccia liverworts is an important reservoir for microbial diversity in temporary agricultural crusts

Wicaksono,

Semler,

Pöltl

et al. 2023

Environmental Microbiome

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Background The microbiota of liverworts provides an interesting model for plant symbioses; however, their microbiome assembly is not yet understood. Here, we assessed specific factors that shape microbial communities associated with Riccia temporary agricultural crusts in harvested fields by investigating bacterial, fungal and archaeal communities in thalli and adhering soil from different field sites in Styria and Burgenland, Austria combining qPCR analyses, amplicon sequencing and advanced microscopy. Results Riccia spec. div. was colonized by a very high abundance of bacteria (1010 16S rRNA gene copies per g of thallus) as well as archaea and fungi (108 ITS copies per g of thallus). Each Riccia thallus contain approx. 1000 prokaryotic and fungal ASVs. The field type was the main driver for the enrichment of fungal taxa, likely due to an imprint on soil microbiomes by the cultivated crop plants. This was shown by a higher fungal richness and different fungal community compositions comparing liverwort samples collected from pumpkin fields, with those from corn fields. In contrast, bacterial communities linked to liverworts are highly specialized and the soil attached to them is not a significant source of these bacteria. Specifically, enriched Cyanobacteria, Bacteroidetes and Methylobacteria suggest a symbiotic interaction. Intriguingly, compared to the surrounding soil, the thallus samples were shown to enrich several well-known bacterial and fungal phytopathogens indicating an undescribed role of liverworts as potential reservoirs of crop pathogens. Conclusions Our results provide evidence that a stable bacterial community but varying fungal communities are colonizing liverwort thalli. Post-harvest, temporary agricultural biocrusts are important reservoirs for microbial biodiversity but they have to be considered as potential reservoirs for pathogens as well.

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“…In China, Stagonosporopsis vannaccii caused leaf spot on Crassocephalum crepidioides plants in the kudzu ( Pueraria lobata ) garden in Guangxi [ 33 ]. Stagonosporopsis cucurbitacearum is the main cause of pumpkin gummy stem blight (GSB), one of the most devastating pumpkin crop diseases in north-east China [ 34 ].…”

Section: Discussionmentioning

confidence: 99%

Stagonosporopsis pogostemonis: A Novel Ascomycete Fungus Causing Leaf Spot and Stem Blight on Pogostemon cablin (Lamiaceae) in South China

et al. 2021

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Pogostemon cablin is one of the well-known Southern Chinese medicinal plants with detoxification, anti-bacterial, anti-inflammatory, and other pharmacological functions. Identification and characterization of phytopathogens on P. cablin are of great significance for the prevention and control of diseases. From spring to summer of 2019 and 2020, a leaf spot disease on Pogostemon cablin was observed in Guangdong Province, South China. The pathogen was isolated and identified based on both morphological and DNA molecular approaches. The molecular identification was conducted using multi-gene sequence analysis of large subunit (LSU), the nuclear ribosomal internal transcribed spacer (ITS), beta-tubulin (β-tubulin), and RNA polymerase II (rpb2) genes. The causal organism was identified as Stagonosporopsis pogostemonis, a novel fungal species. Pathogenicity of Stagonosporopsis pogostemonis on P. cablin was fulfilled via confining the Koch's postulates, causing leaf spots and stem blight disease. This is the first report of leaf spot diseases on P. cablin caused by Stagonosporopsis species worldwide.

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Identification and characteristics of Stagonosporopsis cucurbitacearum pathogenic factors influencing pumpkin seeding survival in north‐east China

Cited by 10 publications

References 70 publications

Plant-Associated Novel Didymellaceous Taxa in the South China Botanical Garden (Guangzhou, China)

Plant-Associated Novel Didymellaceous Taxa in the South China Botanical Garden (Guangzhou, China)

The microbiome of Riccia liverworts is an important reservoir for microbial diversity in temporary agricultural crusts

Stagonosporopsis pogostemonis: A Novel Ascomycete Fungus Causing Leaf Spot and Stem Blight on Pogostemon cablin (Lamiaceae) in South China

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