Xanthomonas oryzae

L-alanine can be prepared from aspartic acid (Figure A8.13). L-Aspartate-(5-decarboxylase produced by Xanthomonas oryzae No 531 has been used to prepared L-alanine in 95% yield from 15% L-aspartic add solution. Other strains, ie Pseudomonas dacunhae or Achromobacter pestifer, give comparable yields of L-alanine. The process has been commercialised by Tanabe. 

Chittoor J.M. Leach J.E. White F.F. (1997) Differential induction of a peroxidase gene family during infection of rice by Xanthomonas oryzae po. oryzae // Mol Plant Microbe Inter. V. 10. P. 861-871. 

Xanthomonas oryzae (only in bacteriophage XP-12-infected, not in uninfected strain [1]) [1]... 

The control of bacterial diseases with the currently available products Is very unsatisfactory. The problem has become urgent with the spread of fire blight (Erwlnla amylovora) In Europe, and the Increased Incidence of bacterial leaf blight of rice (Xanthomonas oryzae) and citrus canker (Xanthomonas cltrl) as well as many other bacterial diseases. The direct control of virus diseases Is cur-... 

Xa2i A rice gene that confers resistance to most strains ofXanthomonas oryzae pv. oryzae. Xanthomonas oryzae A bacteria that causes bacterial blight of rice. 

Nojirimycin B (248, mannojirimycin) was isolated from the culture broth of Streptomyces lavendulae, along with nojirimycin [550]. The structure of 248 was established by NMR and by its oxidation to mannonic-6-lactam. Nojirimycin B was a potent inhibitor of apricot emulsin and rat epididymal a-mannosidase, but was less active against Trichoderma viride p-glucosidase. It was weakly active against Xanthomonas oryzae, but inactive against other bacteria [550]. 

DETECTION OF XANTHOMONAS ORYZAE PV. ORYZICOLA BY ELECTROCHEMILUMINESCENCE POLYMERASE CHAIN REACTION... 

Fentiazon (74), 3-benzylidenamino-4-phenyl-l,3-thiazolin-2-thion, developed in Japan (Usui and Yamano, 1969), is a folial fungicide with preventive action against the bacterial leaf blight of rice caused by Xanthomonas oryzae. It is not toxic to rice, but is moderately toxic to fish. Its acute oral LOj is 10 000 mg/kg for rats (Anonym, 1967). 

FIG U RE 9.4 The bacterial leaf blight symptom caused by Xanthomonas oryzae pv. oryzae on wild-type (A) andp p-transgenic rice plants (B). 

Rice bacterial blight (Xanthomonas oryzae Dowson) Sheath blight of rice (Pellicularia sasakii (Shirai) S. Ito)... 

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