scholarly journals In-Silico Characterization and Expression Analysis of NB-ARC Genes in Response to Erwinia mallotivora in Carica papaya

2021 ◽  
Vol 50 (9) ◽  
pp. 2591-2602
Author(s):  
Nur Syazana Abu Bakar ◽  
Noor Baity Saidi ◽  
Lina Rozano ◽  
Mohd Puad Abdullah ◽  
Suhaina Supian
Keyword(s):  
Disease Resistance ◽  
Plant Disease Resistance ◽  
Carica Papaya ◽  
R Genes ◽  
Binding Surface ◽  
Transcriptome Database ◽  
Defence Signalling ◽  
In Silico Characterization ◽  
Lrr Domain

Disease resistance in plants is commonly associated with resistance (R) genes that encode nucleotide binding site-leucine rich repeat (NBS-LRR) domains that are essential for pathogen recognition and defence signalling. In this study, we identified and analyzed the sequence of putative pathogen-responsive NB-ARC transcripts from Carica papaya transcriptome database, carried out the structural and phylogenetic analysis, and determined the expression profile of the transcripts in C. papaya challenged with Erwinia mallotivora. The findings indicate CpNBS1, the only pathogen-responsive NB-ARC protein identified in this study belongs to the CC-NBS-LRR group. Semi-quantitative PCR showed CpNBS1 was differentially expressed in response to E. mallotivora. Structural analysis of the 4993-Eksotika and 4993-Viorica translated proteins showed striking differences in terms of the number of β-sheets and α-helixes as well their ligand-binding surface, suggesting the role of the LRR domain in determining the specificity of recognition of E. mallotivora effector. Collectively, this study provides new insights into the role of NBS-LRR genes in C. papaya and its implications for enhancing of plant disease resistance through genetic engineering.

Role of transporters in plant disease resistance

2021 ◽  
Vol 171 (4) ◽  
pp. 849-867
Author(s):  
Basavantraya N. Devanna ◽  
Rajdeep Jaswal ◽  
Pankaj Kumar Singh ◽  
Ritu Kapoor ◽  
Priyanka Jain ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Plant Disease Resistance ◽  
Plant Disease

Arabidopsis thaliana: A source of candidate disease-resistance genes for Brassica napus

Genome ◽  
2000 ◽  
Vol 43 (3) ◽  
pp. 452-460 ◽  
Author(s):  
D Sillito ◽  
I AP Parkin ◽  
R Mayerhofer ◽  
D J Lydiate ◽  
A G Good
Keyword(s):  
Arabidopsis Thaliana ◽  
Disease Resistance ◽  
Brassica Napus ◽  
Resistance Genes ◽  
Plant Disease Resistance ◽  
Disease Resistance Genes ◽  
R Gene ◽  
R Genes ◽  
Rapid Divergence ◽  
Genomic Regions

Common structural and amino acid motifs among cloned plant disease-resistance genes (R genes), have made it possible to identify putative disease-resistance sequences based on DNA sequence identity. Mapping of such R-gene homologues will identify candidate disease-resistance loci to expedite map-based cloning strategies in complex crop genomes. Arabidopsis thaliana expressed sequence tags (ESTs) with homology to cloned plant R genes (R-ESTs), were mapped in both A. thaliana and Brassica napus to identify candidate R-gene loci and investigate intergenomic collinearity. Brassica R-gene homologous sequences were also mapped in B. napus. In total, 103 R-EST loci and 36 Brassica R-gene homologous loci were positioned on the N-fo-61-9 B. napus genetic map, and 48 R-EST loci positioned on the Columbia × Landsberg A. thaliana map. The mapped loci identified collinear regions between Arabidopsis and Brassica which had been observed in previous comparative mapping studies; the detection of syntenic genomic regions indicated that there was no apparent rapid divergence of the identified genomic regions housing the R-EST loci.Key words: RFLP mapping, candidate R genes, R-gene homologues, genomic collinearity, Arabidopsis ESTs.

A Central Role of Salicylic Acid in Plant Disease Resistance

Science ◽  
1994 ◽  
Vol 266 (5188) ◽  
pp. 1247-1250 ◽  
Author(s):  
T. P. Delaney ◽  
S. Uknes ◽  
B. Vernooij ◽  
L. Friedrich ◽  
K. Weymann ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Disease Resistance ◽  
Plant Disease Resistance ◽  
Plant Disease

scholarly journals Understanding and Exploiting Post-Translational Modifications for Plant Disease Resistance

Biomolecules ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1122
Author(s):  
Catherine Gough ◽  
Ari Sadanandom
Keyword(s):  
Disease Resistance ◽  
Immune Responses ◽  
Plant Disease Resistance ◽  
Plant Immunity ◽  
Dynamic Responses ◽  
Post Translational Modifications ◽  
Pathogen Effectors ◽  
Trade Offs ◽  
Defence Signalling ◽  
Fine Tune

Plants are constantly threatened by pathogens, so have evolved complex defence signalling networks to overcome pathogen attacks. Post-translational modifications (PTMs) are fundamental to plant immunity, allowing rapid and dynamic responses at the appropriate time. PTM regulation is essential; pathogen effectors often disrupt PTMs in an attempt to evade immune responses. Here, we cover the mechanisms of disease resistance to pathogens, and how growth is balanced with defence, with a focus on the essential roles of PTMs. Alteration of defence-related PTMs has the potential to fine-tune molecular interactions to produce disease-resistant crops, without trade-offs in growth and fitness.

Role of reactive oxygen species and antioxidants in plant disease resistance

2003 ◽  
Vol 59 (4) ◽  
pp. 459-464 ◽  
Author(s):  
Balázs Barna ◽  
József Fodor ◽  
Miklós Pogány ◽  
Zoltán Király
Keyword(s):  
Reactive Oxygen Species ◽  
Disease Resistance ◽  
Plant Disease Resistance ◽  
Plant Disease ◽  
Reactive Oxygen ◽  
Oxygen Species
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