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Rice Genes that Regulate the Rice Stress Response
University of California System: University of California, Davis - UC Davis
posted on 10/18/2011
Three genes in rice have demonstrated a significant role in plant innate immunity. Two genes confer improved pathogen resistance when silenced (demonstrated by challenge experiments using Xanthomonas oryzae pv oryzae.) One gene confers improved pathogen resistance when overexpressed (demonstrated by challenge experiments with Xanthomonas oryzae pv oryzae). Further, researchers identified ten additional novel regulators of stress tolerance in rice, including three from protein classes not previously known to function in stress responses. Several lines of evidence suggest cross-talk between biotic and abiotic stress responses.
Suggested Uses
Rice is a staple food for more than half the world and a model for studies of monocotyledonous species, which include cereal crops and candidate bioenergy grasses. Because of the economic importance of rice, as well as the growing importance of dedicated energy crop grasses, and the magnitude of stress-related losses, these genes are potentially important for the engineering of broad-spectrum (biotic and abiotic) resistance into rice, other important crops and biofuel applicable plants.
Advantages
- These genes have been demonstrated to confer disease and other stress resistance via genetic engineering of plants.
- Because rice is a model for all grasses, these genes can also be used for improvement of other monocots and dedicated energy crop grasses.
- Stress tolerant genes can benefit farmers, growers and consumers by decreasing inputs and production costs. This can amount to multi-million dollar savings in rice, and can be advantageous in other monocots as bioenergy crop grasses become commercialized on a larger scale.
Inventors
- Ronald, Pamela C., et al.
Detailed Description
Researchers have identified three genes and their associated proteins that confer resistance to Xanthomonas, a major bacterial disease of virtually all crops.
Further, researchers have identified ten additional novel regulators of stress tolerance in rice. To elucidate stress response signaling networks, the researchers constructed an interactome of 100 proteins by yeast two-hybrid (Y2H) assays around key regulators of biotic and abiotic stress responses of rice. The key regulators on which the interactome was built include XA21 and NH1 (which control the rice response to disease) and SUB1A and SUB1C (which control the rice response to flooding). The interactome was validated using protein-protein interaction assays, co-expression of transcripts and phenotypic analyses. This led to the discovery of ten novel proteins involved in the rice stress response.
File Number: 20963
| Copyright: | ©2011-2012, The Regents of the University of California |
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This innovation currently is not available for online licensing. Please contact Randi Jenkins at University of California System: University of California, Davis - UC Davis for more information.
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