Rhodococcus Requires Only a Single Cytokinin to Cause Gall Symptoms.July 23, 2014
Rhodococcus, a member of the Actinobacteria, can cause gall symptoms and deformities and are pathogens to a wide range of plants. A current belief is that pathogenic Rhodococcus isolates contain the fas operon. This fas operon produces a mixture of growth-regulating cytokinins which, in turn, cause hormonal imbalance in plants, resulting in abnormal growth.
Researchers from Oregon State University compared 20 isolates of Rhodococcus to study the mechanisms of infection in these bacteria. Although the fas operon is present in most phytopathogenic isolates, it is absent from pathogenic isolate A21d2. Instead, this isolate has a gene chimera that encodes a protein capable of catalyzing and activating several cytokinins. Analysis of an archetypal isolate with the fas operon revealed that only one active cytokinin type, isopentenyladenine cytokinin, was specifically synthesized.
These results show that only isopentenyladenine cytokinin is necessary for Rhodococcus pathogenicity, contrary to the belief that a mixture of cytokinins was necessary for Rhodococcus to cause gall symptoms.
Learn more on this study by visiting http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0101996.
ISAAA shares, disseminates, and promotes science-based information to help in achieving global agricultural sustainability and development. During this time of COVID-19 pandemic, we monitor research on treatments, vaccines and keep track of the pandemic's effect on food security and agriculture. We help the public make informed decisions and actions to mitigate and recover from the impact of COVID-19. At this crucial time, we need your help. Please support our efforts today from as little as $10
See more articles:
News from Around the World
- ISAAA Brief 47: The Status of Commercialized Bt Brinjal in Bangladesh
- Genetic Blueprint of Bread Wheat Genome Unveiled
- Global Biotech Groups Unite
- US House Agri Subcommittee Highlights Benefits of Biotech
- Report Shows GM Corn Area Nearly Doubled in a Decade
- Hokkaido Farmers Hopeful for Field Trials of GM Crops
- Less Chlorophyll to Boost Wheat Yields
- Novel Gene for Salt Tolerance Found in Wild Soybean
- Korea Holds Plant Breeding Symposium
- Researchers Capture Genetic Snapshot of Maize
- Scientists Watch Photosynthesis in Action
- Solar Ultraviolet Radiation May Improve Grape Fruit and Wine Quality
- Rhodococcus Requires Only a Single Cytokinin to Cause Gall Symptoms.
- MLO Gene Family may Hold Key to Powdery Mildew Resistance in Rosaceae Species
Beyond Crop Biotech
- Chlamydial Infection in Men Causes Apoptosis of Sperm Cells
- Bioinformatics Training
- Country Biotech Facts and Trends
- Infographic on GM Safety
Subscribe to CBU: