The Avr1b locus is required for avirulence of the oomycete pathogen Phytophthora sojae on soybeans carrying resistance gene Rps1b. One of the Avr genes of the locus (Avr1b-1) was shown to encode an elicitor. We have analyzed the spatial and temporal expression patterns of Avr1b-1 in comparison to defense-related genes induced in soybean. Avr1b-1 expression was detectable mainly in close proximity to the site of infection, in wound-inoculated hypocotyls as well as in roots infected with zoospores. Usually, in compatible interactions, higher expression levels of Avr1b-1 were observed in roots when compared with incompatible P. sojae-soybean interactions, whereas neither the timing nor the amount of transcript accumulation of defense-related genes showed cultivar-specific differences. In contrast, the PsojNIP gene encoding a proposed virulence factor was expressed only during the necrotrophic phase in the compatible interaction.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1574-6968.2006.00467.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Defense to in groundnut ( L.) is associated with vascular tissue compactness and expression of genes coding for pathogenesis-related (PR) proteins.
3 Biotech
February 2025
Junagadh Agricultural University, Junagadh, Gujarat 362001 India.
Unlabelled: is the causal agent of stem rot of many crops, a highly destructive disease of groundnut ( L). Based on evidence that many groundnut genotypes have an inherent ability to tolerate the pathogenicity of species, twenty-two genotypes of groundnut were screened against infection in sick plot field experiment; four genotypes, namely CS19, GG16, GG20 and TG37A, were selected as being the most tolerant, moderately tolerant, susceptible and highly susceptible to stem rot, respectively. Stem tissues (1cm from the collar region) from infected and healthy plants of four selected genotypes differing in susceptibility were examined using a scanning electron microscope (SEM).
View Article and Find Full Text PDFControl of HS synthesis by the monomer-oligomer transition of OsCBSX3 for modulating rice growth-immunity balance.
Mol Plant
January 2025
State Key Laboratory of Wheat Improvement, Shandong Provincial Key Laboratory of Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, China. Electronic address:
Hydrogen sulfide (H2S) is recognized as an important gaseous signaling molecule, similar to nitric oxide and carbon monoxide. However, the synthesis mechanism of H2S and its role in enhancing rice resistance to Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv.
View Article and Find Full Text PDFA Zinc Polyphenolic Compound Increases Maize Resistance Against Infection by .
Plants (Basel)
December 2024
Laboratório da Interação Planta-Patógeno, Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa 36570-900, Minas Gerais, Brazil.
Maize leaf blight (MLB), caused by the fungus , is an important disease affecting maize production. In order to minimize the use of fungicides in agriculture, nutrient-based resistance inducers may become a promising alternative to manage MLB. The goal of this study was to investigate the potential of Semia (zinc (20%) complexed with a plant-derived pool of polyphenols (10%)) to hamper the infection of maize leaves by by analyzing their photosynthetic performance and carbohydrate and antioxidative metabolism, as well as the expression of defense-related genes.
View Article and Find Full Text PDF(T6) Peptaibols Inhibiting the Growth and Inducing Pear Fruit Resistance in Its Infection.
Antioxidants (Basel)
December 2024
College of Plant Protection, Gansu Agricultural University, Lanzhou 730070, China.
Pear fruit brown rot, caused by , affects pear fruit yields and quality. The present study determined T6 (T6) peptaibols as a biological control alternative to synthetic fungicides and assessed its efficacy against through dual plate culture and surface spraying at different concentrations. T6 peptaibols effectively inhibited growth, achieving an 85.
View Article and Find Full Text PDFBeneficial mutualistic fungus Suillus luteus provided excellent buffering insurance in Scots pine defense responses under pathogen challenge at transcriptome level.
BMC Plant Biol
January 2025
Forest Pathology Research Lab, Faculty of Agriculture and Forestry, Department of Forest Sciences, University of Helsinki, Helsinki, 00790, Finland.
Background: Mutualistic mycorrhiza fungi that live in symbiosis with plants facilitates nutrient and water acquisition, improving tree growth and performance. In this study, we evaluated the potential of mutualistic fungal inoculation to improve the growth and disease resistance of Scots pine (Pinus sylvestris L.) against the forest pathogen Heterobasidion annosum.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!