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Abstract
We describe the cloning and identification of a rice cDNA, OsTVLP1, encoding a protein with similarity to TGF-β receptor interacting proteins and vacuolar assembly Vam6p/Vps39p proteins. OsTVLP1 has an open reading frame of 2955 bp, which encodes a 984 amino acid protein, containing a citron homology (CNH) domain at its N-terminal and a clathrin heavy-chain repeat homology (CLH) domain at its C-terminal. The expression of OsTVLP1 was induced by treatments with benzothiadiazole (BTH), a chemical activator of plant disease resistance responses, and by infection of the blast fungus, Magnaporthe grisea. Importantly, the expression of OsTVLP1 was activated specifically in disease resistance response induced by BTH and in an incompatible interaction between rice and the blast fungus. Our observations suggest that OsTVLP1 may play a role in rice disease resistance response against pathogen infection.
Acknowledgements
This study was supported by the National Natural Science Foundation of China (grants no. 30170494 and 30170598), the Fund for the New Century Talent Program of MOE, the Key Project of MOE, and the Excellent Young Teachers Program of MOE to FMS, and the National Natural Science Foundation of China (grants no. 30270860) to ZZ. The authors thank Dr Zuhua He (Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Science) for the rice near-isogenic lines H8R and H8S, and Mr Rongyao Chai (Zhejiang Academy of Agricultural Science) for the M. grisea isolate 85-14B1.
Notes
* The nucleotide sequence for OsTVLP1 has been deposited in GenBank under accession number DQ237917.
† Present address: Institute of Microbiology, Chinese Academy of Science, Beijing 100080, People's Republic of China.