Abstract
Citrus fruits, revered for their nutritional value, face significant threats from diseases like citrus canker, particularly impacting global citrus cultivation, notably in Pakistan. This study delves into the critical role of NPR1 -like genes, the true receptors for salicylic acid (SA), in the defense mechanisms of citrus against Xanthomonas axonopodis pv. citri (Xcc). By conducting a comprehensive genome-wide analysis and phylogenetic study, the evolutionary dynamics of Citrus limon genes across diverse citrus cultivars are elucidated. Structural predictions unveil conserved domains, such as the BTB domain and ankyrin repeat domains, crucial for the defense mechanism. Motif analysis reveals essential conserved patterns, while cis-regulatory elements indicate their involvement in transcription, growth, response to phytohormones, and stress. The predominantly cytoplasmic and nuclear localization of NPR1 -like genes underscores their pivotal role in conferring resistance to various citrus species. Analysis of the Ks/Ka ratio indicates a purifying selection of NPR1 -like genes, emphasizing their importance in different species. Synteny and chromosomal mapping provide insights into duplication events and orthologous links among citrus species. Notably, Xac infection stimulates the expression of NPR1 -like genes, revealing their responsiveness to pathogenic challenges. Interestingly, qRT-PCR profiling post-Xac infection reveals cultivar-specific alterations in expression within susceptible and resistant citrus varieties. Beyond genetic factors, physiological parameters like peroxidase, total soluble protein, and secondary metabolites respond to SA-dependent PR genes, influencing plant characteristics. Examining the impact of defense genes (NPR1) and plant characteristics on disease resistance in citrus, this study marks the inaugural investigation into the correlation between NPR1-associated genes and various plant traits in both susceptible and resistant citrus varieties to citrus bacterial canker.
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Claims 10
Claim · model-written summary
NPR1-like genes have conserved BTB and ankyrin repeat domains.
CitrusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Structural predictions unveil conserved domains, such as the BTB domain and ankyrin repeat domains, crucial for the defense mechanism.”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Motif analysis found conserved patterns in citrus NPR1-like genes.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Motif analysis reveals essential conserved patterns”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Cis-regulatory elements indicated involvement in transcription, growth, phytohormone response and stress.
- Gene
- cis-regulatory elementse0
- Outcome
- involvement in transcription, growth, response to phytohormones, and stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cis-regulatory elements indicate their involvement in transcription, growth, response to phytohormones, and stress.”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
NPR1-like genes were predominantly localized in cytoplasm and nucleus.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The predominantly cytoplasmic and nuclear localization of NPR1 -like genes underscores their pivotal role in conferring resistance to various citrus species.”
Claim · model-written summary
Ks/Ka analysis indicated purifying selection of NPR1-like genes.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Analysis of the Ks/Ka ratio indicates a purifying selection of NPR1 -like genes”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Synteny and chromosome mapping identified duplication events among citrus species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Synteny and chromosomal mapping provide insights into duplication events and orthologous links among citrus species.”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Synteny and chromosome mapping identified orthologous links among citrus species.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Synteny and chromosomal mapping provide insights into duplication events and orthologous links among citrus species.”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Xac infection stimulated expression of NPR1-like genes.
- Treatment
- Xac infectione0
- Interactor
- Xace0pathogen
- Outcome
- expression of NPR1 -like genese0
- Direction
- stimulatese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xac infection stimulates the expression of NPR1 -like genes”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
After Xac infection, NPR1-like expression varied by susceptible and resistant cultivar.
- Material
- susceptible and resistant citrus varietiese0
- Interactor
- Xace0pathogen
- Gene
- NPR1-like genest0
- Outcome
- alterations in expressione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“qRT-PCR profiling post-Xac infection reveals cultivar-specific alterations in expression within susceptible and resistant citrus varieties.”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
Claim · model-written summary
Peroxidase, total soluble protein and secondary metabolites responded to SA-dependent PR genes.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“physiological parameters like peroxidase, total soluble protein, and secondary metabolites respond to SA-dependent PR genes”
t0“Genome-wide analysis of NPR1-like genes in citrus species and expression analysis in response to citrus canker (Xanthomonas axonopodis pv. citri)”
The same questions in other papers
infection · molecular: expression · CitrusPositive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.