Analysis of regulatory relationship between stringent response related gene spoTXcc and T3SS genes in Xanthomonas campestris pv. campestris Studies on Hypersensitive Response Mediated by TMV Resistance Gene N in Nicotiana tabacum Cloning of Tomato myb Gene Fragments and Expression upon Development ofHypersensitive Response Cloning of Tomato myb Gene Fragments and Expression upon Development ofHypersensitive Response The structure of Hpa1Xoo from Xanthomonas oryzae pv. oryzae Effect of Intracellular Calcium Stores on Hypersensitive Reaction Induced by Wheat Leaf Rust Fungus