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ABSTRACT: Trichoderma interaction with a soilborne plant pathogen

PROVIDER: PRJNA914121 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22824400.fastq.gz	Fastqsanger.gz
	SRR22824401.fastq.gz	Fastqsanger.gz
	SRR22824390.fastq.gz	Fastqsanger.gz
	SRR22824391.fastq.gz	Fastqsanger.gz
	SRR22824392.fastq.gz	Fastqsanger.gz

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Expression data from tomato (Solanum lycopersicum) plants in interaction with different Trichoderma strains

Project description:Trichoderma harzianum T34 is a fungal strain able to promote the plant growth and to increase plant defense responses. Trichoderma harzianum transformants expressing the amdS gene, encoding an acetamidase, of Aspergillus nidulans produce a higher plant development than the wild type T34. We used microarrays to analyze the physiological and biochemical changes in tomato plants produced as consequence of interaction with Trichoderma harzianum T34 and amdS transformants

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2021-11-07 | GSE158956 | GEO

Host-specific transcriptomic pattern of Trichoderma virens during interaction with maize or tomato roots

Project description:To test the hypothesis that gene expression by the fungal partner in this beneficial interaction is modulated by the plant host, Trichoderma virens was co-cultured with maize or tomato in a hydroponic system allowing interaction with the roots. The transcriptomes for T. virens alone were compared with fungus-inoculated tomato or maize roots by hybridization on oligonucleotide microarrays Based on the relevant role of Trichoderma virens as a biological control agent this study provides a better knowledge of its crosstalk with plants in a host-specific manner. Trichoderma virens was co-cultured for three days with maize or tomato in a hydroponic system allowing interaction with the roots. 3 experiments were performed for each treatment, and compared to 5 experiments with T. virens grown under the same conditions without plants.

2014-12-19 | E-GEOD-64344 | biostudies-arrayexpress

Host-specific transcriptomic pattern of Trichoderma virens during interaction with maize or tomato roots

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Assembly and annotation of Solanum dulcamara and Solanum nigrum plant genomes, two nightshades with contrasting susceptibilities to Ralstonia solanacearum

Project description:Ralstonia solanacearum causes disease in more than 200 plant species including bacterial wilt of tomatoes and brown rot of potatoes. This bacterium is a soilborne and waterborne pathogen, with a worldwide distribution and is on the EPPO A2 list of quarantine pathogens. ln the UK, the bacterium is present in the rivers, but its prevalence depends on the season; it is highly abundant in the summer and undetectable during winter. To survive the cold winter temperatures, R. solanacearum overwinters inside plants growing alongside the rivers such as Solanum dulcamara. Interestingly, this plant species doesn’t show bacterial wilt symptoms. To understand genomic differences with susceptible hosts, we assembled the genome using Oxford Nanopore Technologies and Illumina sequencing.

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Effect of Mac1 deletion on copper homoestasis and virulence in Fusarium oxysporum f. sp. lycopersici [RNA-seq]

Project description:The transcription factor Mac1 is a key regulator of copper homeostasis, controlling the transcriptional response to copper-limiting conditions in fungi. It has been described as a virulence factor in human pathogens such as Candida albicans and Aspergillus fumigatus, but surprisingly its role in plant pathogenesis is poorly understood. Targeted deletion of Mac1 in the soilborne pathogen Fusarium oxisporum results in an inability to grow under copper-limited conditions and kills tomato plants. The aim of this RNA-seq analysis is to elucidate the role of Mac1 in gene regulation under copper starvation and during infection of tomato plants by F. oxysporum.

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Assembly and annotation of Solanum dulcamara and Solanum nigrum plant genomes, two nightshades with contrasting susceptibilities to Ralstonia solanacearum

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Transcriptional reprogramming underpins enhanced plant growth promotion by the biocontrol fungus Trichoderma hamatum GD12 during antagonistic interactions with Sclerotinia sclerotiorum in soil

Project description:The free-living soil fungus Trichoderma hamatum GD12 is notable amongst other Trichoderma strains in exhibiting both biocontrol and plant growth promotion (PGP) activities, which are coincident with a markedly expanded genome when compared to other characterised biocontrol and PGP isolates. Here, we make direct comparisons of T. hamatum GD12 transcription during PGP, and during antagonism of the root-infecting pathogen Sclerotinia sclerotiorum, in peat-based microcosms. An extensive mRNA-seq analysis sampling six time-points, 1, 2, 4, 7, 10 and 15 days after microcosm establishment revealed dynamic and biphasic signatures in the transcriptional responses of T. hamatum GD12 during Sclerotinia biocontrol and lettuce growth promotion. Functional analysis of differentially expressed genes demonstrated up-regulation of transportation and oxidation-reduction genes during both processes. Sclerotinia biocontrol is most likely mediated by the synthesis and secretion of antifungal compounds. Notably, the biphasic response during biocontrol was further characterised by the expression of a number of uncharacterised GD12 genes, small-secreted cysteine rich proteins and secondary metabolite producing gene clusters. This work demonstrates that T. hamatum GD12 harnesses a reservoir of uncharacterised genes that are actively engaged during effective biological control of a plurivorous plant pathogen.

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Trichoderma-plant root colonization: escaping early plant defense responses and activation of the antioxidant machinery

Project description:Trichoderma spp. are versatile opportunistic plant symbionts which can colonize the apoplast of plant roots. Microarrays analysis of Arabidopsis thaliana roots inoculated with Trichoderma asperelloides T203, coupled with qPCR analysis of 137 stress-responsive genes and transcription factors, revealed wide gene transcript reprogramming, preceded by a transient repression of the plant immune responses supposedly to allow root colonization. Enhancement in the expression of WRKY18 and 40, which stimulate JA-signaling via suppression of JAZ repressors and negative-regulate the expression of the defense genes FMO1, PAD3 and CYP71A13, was detected in Arabidopsis roots upon Trichoderma colonization. Reduced root colonization was observed in the wrky18/wrky40 double mutant line, while partial phenotypic complementation was achieved by over-expressing WRKY40 in the wrky18 wrky40 background. On the other hand, an increased colonization rate was found in roots of the FMO1 knockout mutant. Two-condition experiment: Roots treated with Trichoderma vs. Control untreated roots. Biological replicates: 2 control replicates, 2 treated replicates. 1 dye-swap.

2012-11-09 | E-GEOD-42113 | biostudies-arrayexpress

Comparative secretome analyses of Trichoderma/-Arabidopsis co-cultures identify proteins for salt stress, plant growth promotion and root colonization

Project description:Numerous Trichoderma strains are beneficial for plants, promote their growth and confer stress tolerance. A recently described novel Trichoderma strain strongly promotes growth of Arabidopsis thaliana seedlings on media with 50 mM NaCl, while 150 mM NaCl strongly stimulated root colonization and induced salt-stress tolerance in the host without growth promotion. To understand the dynamics of plant-fungus interaction, we examined the secretome from both sides, and revealed a substantial change under different salt regimes, and during co-cultivation. Stress-related proteins, such as fungal Kp4-, WSC- and CFEM-domain-containing proteins, the plant calreticulin and cell-wall modifying enzymes, disappear when the two symbionts are co-cultured under high salt concentrations. More proteins involved in plant and fungal cell wall modifications and the battle of root colonization are found in the co-cultures under salt stress, while the number of plant antioxidant proteins decreased. We identified symbiosis- and salt concentration-specific proteins for both partners. The Arabidopsis PYK10 and a fungal prenylcysteine lyase are only found in the co-culture which promoted plant growth. The comparative analysis of the secretomes suggests that both partners profit from the interaction under salt stress but have to invest more in balancing the symbiosis. We discuss the role of the identified stage- and symbiosis-specific fungal and plant proteins for salt-stress and conditions promoting root colonization and plant growth.

2021-12-15 | PXD028957 | Pride

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