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Induction of defense responses and protection of almond plants against Xylella fastidiosa by endotherapy with a bifunctional peptide

ABSTRACT: Induction of defense responses and protection of almond plants against Xylella fastidiosa by endotherapy with a bifunctional peptide

PROVIDER: PRJNA813584 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18264537_1.fastq.gz	Fastqsanger.gz
	SRR18264537_2.fastq.gz	Fastqsanger.gz
	SRR18264538_1.fastq.gz	Fastqsanger.gz
	SRR18264538_2.fastq.gz	Fastqsanger.gz
	SRR18264539_1.fastq.gz	Fastqsanger.gz

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Induction of defense responses and protection of almond plants against Xylella fastidiosa by endotherapy with a bifunctional peptide

Project description:Xylella fastidiosa is a plant pathogenic bacterium that has been introduced in the European Union (EU), causing significant yield losses in economically important Mediterranean crops. Almond leaf scorch (ALS) is currently one of the most relevant diseases observed in Spain, and no cure has been found to be effective for this disease. In previous reports, the peptide BP178 has shown a strong bactericidal activity in vitro against X. fastidiosa and to other plant pathogens, and to trigger defense responses in tomato plants. In the present work, BP178 was applied by endotherapy to almond plants cv. Avijor using preventive and curative strategies. The capacity of BP178 to reduce the population levels of X. fastidiosa and to decrease disease symptoms, and its persistence over time were demonstrated under greenhouse conditions. The most effective treatment consisted of a combination of preventive and curative applications and the peptide was detected in the stem up to 60 days post-treatment. Priming plants with BP178 induced defense responses mainly through the salicylic acid pathway, but also overexpressed some genes of the jasmonic acid and ethylene pathways. It is concluded that the bifunctional peptide is a promising candidate to be further developed to manage ALS caused by X. fastidiosa.

2022-04-08 | GSE198089 | GEO

Prunus dulcis response to novel defense elicitor peptides and control of Xylella fastidiosa infections

Project description:Xylella fastidiosa is a plant pathogenic bacterium that has been introduced in the European Union (EU), threatening the agricultural economy of relevant Mediterranean crops such as almond (Prunus dulcis). Plant defense elicitor peptides would be promising to manage diseases such as almond leaf scorch but their effect on the host has not been fully studied. In this work, the response of almond plants to the defense elicitor peptide flg22-NH2 was studied in-depth using RNA-seq, confirming the activation of the salicylic acid and abscisic acid pathways. Marker genes related to the response triggered by flg22-NH2 were used to study the effect of the application strategy of the peptide on almond plants and to depict its time course. The application of flg22-NH2 by endotherapy triggered the highest number of upregulated genes, especially at 6 hours after the treatment. A library of peptides that include BP100-flg15, HpaG23, FV7, RIJK2, PIP-1, Pep13, BP16-Pep13, flg15-BP100 and BP16 triggered a stronger defense response in almond plants than flg22-NH2. The best candidate, FV7, when applied by endotherapy on almond plants inoculated with X. fastidiosa, significantly reduced levels of the pathogen and decreased disease symptoms. Therefore, these novel plant defense elicitors are suitable candidates to manage diseases caused by X. fastidiosa, in particular almond leaf scorch.

2024-07-13 | GSE259385 | GEO

Heat Shock response of the phytopathogenic bacteria Xylella fastidiosa

Project description:This is the study of the Heat Shock response of phytopathogenic bacteria Xylella fastidiosa. This series keeps the 25 minutes 40oC stimulus response (Aug 2005). Keywords: stress response; heat shock response

2006-06-01 | GSE3044 | GEO

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Expression analysis of Xylella fastidiosa PD Temecula strain grown in different media

Project description:Investigation of whole genome gene expression level changes in Xylella fastidiosa grown in minimal media XFM and XFM supplied with pectin or glucan (Host polysaccharides) , compared to cell grown in the complex media PWG. The cells grown in the minimal medium XFM supplied with host polysaccharides specially pectin are transmissible by the insect vector when delivered to the vector through artificial diet system. This does not happen with cells grown in the complex media. 4 (4 plex chips) study using total RNA recovered from 4 independents replicates for Xylella fastidiosa grown on PWG, XFM, XFM-glucan and XFM-pectin.

2009-10-03 | E-GEOD-18369 | biostudies-arrayexpress

Comparative genomic hybridization of Xylella fastidiosa 9a5c (pathogenic, reference strain) and J1a12 (non-pathogenic)

Project description:Comparison of genomic DNA from two strains of Xylella fastidiosa: 9a5c (pathogenic, reference strain) and J1a12 (non-pathogenic).

2004-04-01 | E-MEXP-22 | biostudies-arrayexpress

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