The presence of Phytophthora infestans in the rhizosphere of a wild Solanum species may contribute to off-season survival and pathogenicity

Vetukuri, Ramesh R.; Masini, Laura; McDougal, Rebecca; Panda, Preeti; Zinger, Levine de; Brus-Szkalej, Maja; Lankinen, Åsa; Grenville‐Briggs, Laura J.

doi:10.1016/j.apsoil.2019.103475

Cited by 11 publications

(3 citation statements)

References 61 publications

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“…Control leaves were treated with 20 μL 1× PBS buffer instead of a pathogen suspension. This experiment was repeated three times with 5 leaves per treatment and two spots per leaf [ 60 , 61 ].…”

Section: Methodsmentioning

confidence: 99%

Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens

Ghadamgahi

Tarighi

Taheri

et al. 2022

Biology

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P. aeruginosa strain FG106 was isolated from the rhizosphere of tomato plants and identified through morphological analysis, 16S rRNA gene sequencing, and whole-genome sequencing. In vitro and in vivo experiments demonstrated that this strain could control several pathogens on tomato, potato, taro, and strawberry. Volatile and non-volatile metabolites produced by the strain are known to adversely affect the tested pathogens. FG106 showed clear antagonism against Alternaria alternata, Botrytis cinerea, Clavibacter michiganensis subsp. michiganensis, Phytophthora colocasiae, P. infestans, Rhizoctonia solani, and Xanthomonas euvesicatoria pv. perforans. FG106 produced proteases and lipases while also inducing high phosphate solubilization, producing siderophores, ammonia, indole acetic acid (IAA), and hydrogen cyanide (HCN) and forming biofilms that promote plant growth and facilitate biocontrol. Genome mining approaches showed that this strain harbors genes related to biocontrol and growth promotion. These results suggest that this bacterial strain provides good protection against pathogens of several agriculturally important plants via direct and indirect modes of action and could thus be a valuable bio-control agent.

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Section: Methodsmentioning

confidence: 99%

Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens

Ghadamgahi

Tarighi

Taheri

et al. 2022

Biology

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“…By profiling the A. thaliana root microbiome, Durán et al (2018) provided evidence that negative interactions between bacteria and oomycetes, members of root microbiota, are critical for plant survival and maintenance of the host-microbiota balance [51] . On the other hand, the rhizospheric microbiota of some wild Solanum species may contribute to off-season survival and pathogenicity of P. infestans [52] . In the specific context of zoospore swimming in the soil, such studies would shed light on how zoospores maximize microbial interactions during the early infection events to exploit the diversity of the effector repertoire that each species uses to promote infection [53] , [54] .…”

Section: The Microbial Environmentmentioning

confidence: 99%

Phytophthora zoospores: From perception of environmental signals to inoculum formation on the host-root surface

Bassani

Larousse

Tran

et al. 2020

Computational and Structural Biotechnology Journal

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To explore moist soils and to target host plants, phytopathogenic Phytophthora species utilize the sensory and propulsion capabilities of the biflagellate unicellular zoospores they produce. Zoospore motion and interactions with the microenvironment are of primary importance for Phytophthora physiology. These are also of critical significance for plant pathology in early infection sequential events and their regulation: the directed zoospore migration toward the host, the local aggregation and adhesion at the host penetration site. In the soil, these early events preceding the root colonization are orchestrated by guidance factors, released from the soil particles in water films, or emitted within microbiota and by host plants. This signaling network is perceived by zoospores and results in coordinated behavior and preferential localization in the rhizosphere. Recent computational and structural studies suggest that rhizospheric ion and plant metabolite sensing is a key determinant in driving zoospore motion, orientation and aggregation. To reach their target, zoospores respond to various molecular, chemical and electrical stimuli. However, it is not yet clear how these signals are generated in local soil niches and which gene functions govern the sensing and subsequent responses of zoospores. Here we review studies on the soil, microbial and host-plant factors that drive zoospore motion, as well as the adaptations governing zoospore behavior. We propose several research directions that could be explored to characterize the role of zoospore microbial ecology in disease.

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“…A late blight resistance resource is hidden in genotypes of wild potato species native to Mexico and the Andean highlands and developed during the ages of host and pathogen coevolution (e.g., [ 5 ]). The wild germplasm have been successfully implemented in breeding programs, including species with broad-spectrum resistance genes (e.g., S. bulbocastanum , S. stoloniferum , and S. verrucosum ), and the number of species with reported resistance to late blight is steadily increasing [ 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. However, the conventional resistance breeding process is time-consuming, giving a rapidly adapting pathogen an advantage.…”

Section: Introductionmentioning

confidence: 99%

The Omics Hunt for Novel Molecular Markers of Resistance to Phytophthora infestans

Dufková

Berka

Greplová

et al. 2021

Plants

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Wild Solanum accessions are a treasured source of resistance against pathogens, including oomycete Phytophthora infestans, causing late blight disease. Here, Solanum pinnatisectum, Solanum tuberosum, and the somatic hybrid between these two lines were analyzed, representing resistant, susceptible, and moderately resistant genotypes, respectively. Proteome and metabolome analyses showed that the infection had the highest impact on leaves of the resistant plant and indicated, among others, an extensive remodeling of the leaf lipidome. The lipidome profiling confirmed an accumulation of glycerolipids, a depletion in the total pool of glycerophospholipids, and showed considerable differences between the lipidome composition of resistant and susceptible genotypes. The analysis of putative resistance markers pinpointed more than 100 molecules that positively correlated with resistance including phenolics and cysteamine, a compound with known antimicrobial activity. Putative resistance protein markers were targeted in an additional 12 genotypes with contrasting resistance to P. infestans. At least 27 proteins showed a negative correlation with the susceptibility including HSP70-2, endochitinase B, WPP domain-containing protein, and cyclase 3. In summary, these findings provide insights into molecular mechanisms of resistance against P. infestans and present novel targets for selective breeding.

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The presence of Phytophthora infestans in the rhizosphere of a wild Solanum species may contribute to off-season survival and pathogenicity

Cited by 11 publications

References 61 publications

Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens

Plant Growth-Promoting Activity of Pseudomonas aeruginosa FG106 and Its Ability to Act as a Biocontrol Agent against Potato, Tomato and Taro Pathogens

Phytophthora zoospores: From perception of environmental signals to inoculum formation on the host-root surface

The Omics Hunt for Novel Molecular Markers of Resistance to Phytophthora infestans

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