Researchers Identify Two Powdery Mildew Resistance Genes from Wild Chinese GrapevineAugust 3, 2016
Chinese grape species have attracted the attention of breeders due to their resistance to powdery mildew caused by Erysiphe necator. Dániel Pap and Summaira Riaz of the University of California evaluated several Vitis piasezkii accessions for resistance to powdery mildew. The team then analyzed an F1 population of a cross between the susceptible Vitis vinifera and the resistant V. piasezkii DVIT2027.
Researchers identified two major powdery mildew resistance genes on chromosomes 9 (Ren6) and 19 (Ren7). Both loci operate by initiating programmed cell death, but differ significantly in response to speed and degree of resistance. Ren6 confers complete resistance while Ren7 confers only a partial resistance to the disease. A comparison of the resistance conferred by Ren6, Ren7 and Run1 gene from Muscadinia rotundifolia, revealed that the speed and strength of resistance from Ren6 is greater than that of Run1 which is then greater than that of Ren7.
The discovery of the loci in this study offers the potential to combine these with existing loci to develop more durable resistance against the powdery mildew.
For more on this study, read the full article in BMC Plant Biology.
The Crop Biotech Update is a weekly newsletter of ISAAA, a not-for-profit organization. The CBU is distributed for free to over 23,000 subscribers worldwide to inform them about the key developments in biosciences, especially in agricultural biotechnology. Your support will help us in our mission to feed the world with knowledge. You can help by donating as little as $10.
See more articles:
News from Around the World
- Scientists Test Efficacy of Maize Resistant to African Maize Stem Borer in Kenya Highlands
- Cost of Developing a GM Crop Demystified
- Repair System Found in Algae to Yield New Biotechnology Tools
- Obama Signs GM Food Labeling Law
- Davao Media Gets Enlightened on Biotechnology
- 'Superstar' Rice Varieties Reduce Fertilizer Loss, Cut Down Pollution
- Researchers Identify Gene Controlling Waterlogging Tolerance in Barley
- UP Law Professors Point out Need for Biotech Communicators
- Scientists Identify Mechanism of Tomato Softening
- Breakthrough in Understanding Rubisco to Help Feed the World
- Stomatal Carpenter 1 Regulates Stomata Patterning in Plants
- Researchers Identify Two Powdery Mildew Resistance Genes from Wild Chinese Grapevine
Plant Breeding Innovations
- Oligonucleotide-Mediated Genome Editing in Plants
Beyond Crop Biotech
- A Rapid, Low-cost Protoplast Transfection System for Switchgrass
- The GMO Revolution
Read the latest:
- Crop Biotech Update (August 10, 2022)
- Genome Editing Supplement (August 10, 2022)
- Gene Drive Supplement (July 27, 2022)
Subscribe to CBU: