Paraphoma species associated with Convolvulaceae

Гомжина, М. М.; Гасич, Е. Л.; Khlopunova, L. B.; Gannibal, Philipp B.

doi:10.1007/s11557-020-01558-8

Cited by 11 publications

(9 citation statements)

References 24 publications

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“…Recently, Eucasphaeria was found colonizing grapevine pruning wounds in Spain [ 18 ]. Fungi belonging to Paraphoma genus, a Phoma -like fungi [ 48 ], were previously found inhabiting both esca-symptomatic and asymptomatic vines, as well as grapevine nursery plants in Switzerland [ 45 ]. The role of Aureobasidium, in particular the species A. pullulans, as a potential biocontrol agent of fungal trunk pathogens of grapevine has been demonstrated in vitro [ 49 ] and in planta [ 50 ].…”

Section: Discussionmentioning

confidence: 99%

Exploring the Temporal Dynamics of the Fungal Microbiome in Rootstocks, the Lesser-Known Half of the Grapevine Crop

Gramaje

Eichmeier

Špetík

et al. 2022

JoF

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Rootstocks are the link between the soil and scion in grapevines, can provide tolerance to abiotic and biotic stresses, and regulate yield and grape quality. The vascular system of grapevine rootstocks in nurseries is still an underexplored niche for research, despite its potential for hosting beneficial and pathogenic microorganisms. The purpose of this study was to investigate the changes in the composition of fungal communities in 110 Richter and 41 Berlandieri rootstocks at four stages of the grapevine propagation process. Taxonomic analysis revealed that the fungal community predominantly consisted of phylum Ascomycota in all stages of the propagation process. The alpha-diversity of fungal communities differed among sampling times for both rootstocks, with richness and fungal diversity in the vascular system decreasing through the propagation process. The core microbiome was composed of the genera Cadophora, Cladosporium, Penicillium and Alternaria in both rootstocks, while the pathogenic genus Neofusicoccum was identified as a persistent taxon throughout the propagation process. FUNguild analysis showed that the relative abundance of plant pathogens associated with trunk diseases increased towards the last stage in nurseries. Fungal communities in the vascular system of grapevine rootstocks differed between the different stages of the propagation process in nurseries. Numerous genera associated with potential biocontrol activity and grapevine trunk diseases were identified. Understanding the large diversity of fungi in the rootstock vascular tissue and the interactions between fungal microbiota and grapevine will help to develop sustainable strategies for grapevine protection.

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Section: Discussionmentioning

confidence: 99%

Exploring the Temporal Dynamics of the Fungal Microbiome in Rootstocks, the Lesser-Known Half of the Grapevine Crop

Gramaje

Eichmeier

Špetík

et al. 2022

JoF

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“…For endophytes Tetracladium sp., P. rhaphiolepidis and E. salmonis were the most frequent. All three species are known grass endophytes while E. salmonis was additionally reported as an animal pathogen ( Maciá-Vicente et al, 2016 ; Ricks and Koide, 2019 ; Gomzhina et al, 2020 ). Besides being pathogenic in animals it was previously isolated from the roots of poplar, which is another commonly grown tree species in SRCs ( Maciá-Vicente et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

The Effects of Host Plant Genotype and Environmental Conditions on Fungal Community Composition and Phosphorus Solubilization in Willow Short Rotation Coppice

et al. 2021

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Phosphorus (P) is an essential plant nutrient. Low availability of P in soil is mainly caused by high content of Fe2O3 in the clay fraction that binds to P making it unavailable. Beneficial microbes, such as P solubilizing microorganisms can increase the available P in soil and improve plant growth and productivity. In this study, we evaluated the effects of environmental conditions (climate, soil parameters), plant genotype, and level of plant association (rhizosphere or endophytic root organism) on the abundance and diversity of phosphorus solubilizing microorganisms in a Salix production system. We hypothesized that a lower number of endophytic fungi may possess the ability to solubilize P compared to the number of rhizosphere fungi with the same ability. We also expect that the plant genotype and the experimental site with its environmental conditions will influence fungal diversity. Two Salix genotypes grown in pure and mixed cultures were investigated for their fungal microbiome community and diversity in the rhizosphere and endosphere during two growing seasons. We found that the rhizosphere fungal community was more diverse. A general dominance of Ascomycota (Dothideomycetes) and Basidiomycota (Tremellomycetes) was observed. The classes Agaricomycetes and Pezizomycetes were more frequent in the endosphere, while Tremellomycetes and Mortierellomycetes were more abundant in the rhizosphere. Plot-specific soil properties (pH, total organic carbon, and nitrogen) significantly influenced the fungal community structure. Among the culturable fungal diversities, 10 strains of phosphate solubilizing fungi (PSFs) from roots and 12 strains from rhizosphere soil were identified using selective media supplemented with di-calcium and tri-calcium phosphates. The fungal density and the number of PSF were much higher in the rhizosphere than in the endosphere. Penicillium was the dominant genus of PSF isolated from both sites; other less frequent genera of PSFs were Alternaria, Cladosporium, and Clonostachys. Overall the main factors controlling the fungal communities (endophytic vs. rhizosphere fungi) were the soil properties and level of plant association, while no significant influence of growing season was observed. Differences between Salix genotypes were observed for culturable fungal diversity, while in metagenomic data analysis, only the class Dothideomycetes showed a significant effect from the plant genotype.

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“…Recently, Eucasphaeria was found colonizing grapevine pruning wounds in Spain [18]. Also, fungi belonging to Paraphoma genus, a Phoma-like fungi [54], were previously found inhabiting both escasymptomatic and asymptomatic vines, as well as grapevine nursery plants in Switzerland [51]. The role of Aureobasidium, in particular the species A. pullulans, as a potential biocontrol agent of fungal trunk pathogens of grapevine has been demonstrated in vitro [55] and in planta [56].…”

Section: Discussionmentioning

confidence: 99%

Exploring the temporal dynamics of the fungal microbiome in rootstocks, the lesser-known half of the grapevine crop

Gramaje¹,

Eichmeier²,

Špetík³

et al. 2021

Preprint

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Background Rootstocks are the link between soil and scion in grapevine, and they can either provide tolerance to abiotic and biotic stresses, and regulate yield and grape quality. The vascular system of grapevine rootstocks is still an underexplored niche despite its potential for hosting beneficial and pathogenic microorganisms. The purpose of this study was to investigate the changes in the composition of fungal communities in 110 Richter and 41 Berlandieri rootstocks at different stages of the grapevine propagation process and to measure the absolute abundance and dynamic changes of Cadophora luteo-olivacea, a common pathogen associated with Petri disease of grapevine. Results Taxonomic analysis revealed that the fungal community predominantly consisted of phyla Ascomycota in all steps of the propagation process. The alpha-diversity of fungal communities differed among sampling moments for both rootstocks, with richness and fungal diversity in the vascular system decreasing throughout the propagation process. The core microbiome was composed by the genera Cadophora, Cladosporium, Penicillium and Alternaria in both rootstocks, while the pathogenic genus Neofusicoccum was identified as a persistent taxon throughout the propagation process. Fungal functionality analysis showed that the relative abundance of plant pathogens associated with trunk diseases increased towards the last stage in nurseries. Regarding C. luteo-olivacea, significant correlations between sequencing reads and droplet digital PCR (ddPCR) was observed. Conclusions Fungal communities in the vascular system of grapevine rootstocks differed among the different stages of the propagation process in nurseries. Numerous genera associated with potential biocontrol activity and grapevine trunk diseases have been identified. Understanding the large diversity of fungi in the rootstock vascular tissue and the interactions between fungal microbiota and grapevine will help developing sustainable strategies for grapevine protection.

show abstract

Paraphoma species associated with Convolvulaceae

Cited by 11 publications

References 24 publications

Exploring the Temporal Dynamics of the Fungal Microbiome in Rootstocks, the Lesser-Known Half of the Grapevine Crop

Exploring the Temporal Dynamics of the Fungal Microbiome in Rootstocks, the Lesser-Known Half of the Grapevine Crop

The Effects of Host Plant Genotype and Environmental Conditions on Fungal Community Composition and Phosphorus Solubilization in Willow Short Rotation Coppice

Exploring the temporal dynamics of the fungal microbiome in rootstocks, the lesser-known half of the grapevine crop

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