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Meloidogyne hapla

ABSTRACT: Northern root-knot nematodes which are devastating pathogens of plant and fiber crops

PROVIDER: PRJNA12686 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR22137906_1.fastq.gz	Fastqsanger.gz
	SRR22137906_2.fastq.gz	Fastqsanger.gz
	SRR22137907_1.fastq.gz	Fastqsanger.gz
	SRR22137907_2.fastq.gz	Fastqsanger.gz

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Developmental trajectories of giant cells induced by Meloidogyne incognita in tomato determined by single-cell RNA-sequencing

Project description:Plant-parasitic root-knot nematodes (Meloidogyne species) are highly polyphagous parasites that infect a wide variety of plants, including economically important crops. These parasites modulate cellular identity of terminally differentiated root cells to induce the formation of giant-cells and knot-like structures (galls), creating new organs in infected plant roots. In this study, we generated single cell RNA-seq data of galls and neighboring root tissues at two distinct stages of M. incognita infection of tomato plants.

2025-08-19 | GSE289841 | GEO

Differentially expressed small RNAs in Arabidopsis galls formed by Meloidogyne javanica

Project description:Root-knot nematodes (RKNs) induce inside the vascular cylinder the giant cells (GCs) imbibed into a gall. Gene-repression in early developing GCs could be facilitated by small RNAs (sRNA) as miRNAs. 24nt-sRNAs, rasiRNAs and 21-22nt-sRNAs can also mediate epigenetic mechanisms. Three sRNA libraries from 3dpi galls and three from uninfected root segments were sequenced following Illumina-Solexa technology.

2015-11-19 | GSE71563 | GEO

Bacillus thuringiensis Cry5, Cry21, App6 and Xpp55 proteins to control the plant pest nematodes Meloidogyne javanica and M. incognita

Project description:The global imperative to enhance crop protection while preserving the environment has increased interest in the application of biological pesticides. Bacillus thuringiensis (Bt) is a Gramm-positive bacterium that can produce nematicidal proteins and accumulate them in parasporal crystals. Root-knot nematodes are obligate root plant parasitic which are distributed worldwide, causing severe damages to the infested plants and, consequently, large yield reductions. In this work, we have evaluated the toxicity of the crystal proteins Cry5, Cry21, App6, and Xpp55 against two root-knot nematodes belonging to the Meloidogyne genus (M. incognita and M. javanica). The results show that all four proteins, when solubilized, were highly toxic for both nematode species. To check the potential of using Bt strains producing nematicidal crystal proteins as biopesticides to control plant parasitic nematodes in the field, in planta assays were conducted, using two wild Bt strains which produced Cry5 or a combination of App6 and Cry5 proteins. The tests were carried out with cucumber or with tomato plants infested with M. javanica J2, subjected to irrigation with spore+cristal mixtures of the respective strains. The results showed that the efficacy of the nematicidal activity was plant-dependent, as Bt was able to reduce emerged J2 in tomato plants but not in cucumber plants. In addition, the toxicity observed in the in planta assays was much lower than expected, highlighting the challenge of the crystal proteins to exert their toxicity. This emphasizes the delivery of the Bt proteins as crucial for its use to control root-knot nematodes.

2025-05-07 | PXD053413 | Pride

Meloidogyne (189290)

Project description:Genomic taxonomic assignment of individual root-knot nematodes

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Differentially expressed small RNAs in Arabidopsis galls formed by Meloidogyne javanica

2015-11-19 | E-GEOD-71563 | biostudies-arrayexpress

Ascorbate oxidation primes rice plants for enhanced defence against root-knot nematode Meloidogyne graminicola through jasmonate/ethylene-activation

Project description:Ascorbic acid (AA) is known to play a vital role in plant growth and detoxification of reactive oxygen species, however little is known about the significance of AA oxidation in plant defence against pathogens. • The role of ascorbate oxidation in rice defence against root-knot nematodes, Meloidogyne graminicola, was tested with application of AA, ascorbate oxidase (AO), dehydroascorbic acid (DHA), biosynthesis inhibitors and use of mutants. Transcriptome analysis was done on AO treated plants, and hormone measurements were executed to confirm the results. Biochemical analyses were used to study oxidative stress markers, including accumulation of H2O2, , malondialdehyde and AA/DHA.

2020-01-22 | GSE125427 | GEO

Bulk soil microbiome associated with Meloidogyne hapla occurrence

Project description:CHARACTERIZING MICROBIAL COMMUNITIES ASSOCIATED WITH THE NORTHERN ROOT-KNOT NEMATODE (MELOIDOGYNE HAPLA) OCCURRENCE AND SOIL HEALTH

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Meloidogyne arenaria

Project description:Root-Knot Nematode - plant parasite infesting a wide range of crops

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Meloidogyne incognita

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