Variability in Indian Isolates of <I>Xanthomonas oryzae</I> (Uyeda and Ishiyama) Dowson, the Incitant of Bacterial Leaf Blight of Rice
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- SHEKHAWAT G.S.
- Division of Mycology and Plant Pathology, IARI
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- SRIVASTAVA D.N.
- Division of Mycology and Plant Pathology, IARI
Bibliographic Information
- Other Title
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- インドのイネ白葉枯病菌[<I>Xanthomonas oryzae</I> (Uyeda et Ishiyama) Dowson]菌株の変異性
Abstract
Variability in virulence, and some important physiological characters of 6 Indian isolates of Xanthomonas oryzae (Uyeda and Ishiyama) Dowson, the incitant of bacterial blight of rice and their sensitivity to antibiotics in vitro were investigated.<BR>Morphologically, all the isolates were alike. However, with regard to cultural and physiological characters and antibiotic sensitivity, they could be divided into two groups. The first group comprised of 4 isolates, which were slower in growth in culture media with optimum temperature between 25-30°C and thermal death point between 51-52°C, liquefied gelatin slowly, hydrolysed starch partially or not at all, gave alkaline reaction in litmus milk, did not produce hydrogen sulphide and were highly sensitive to all the 5 antibiotics tested, including penicillin. These isolates belonged to the highly virulent group. The other group comprised of 2 isolates, which grew faster on culture media with optimum temperature between 25-35°C and the thermal death point between 52-54°C, liquefied gelatin rapidly, hydrolysed starch completely, gave acid reaction in litmus milk, produced hydrogen sulphide and were insensitive to penicillin and comparatively less sensitive to the other 4 antibiotics. These isolates were comparatively less virulent than the isolates of the first group.
Journal
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- Japanese Journal of Phytopathology
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Japanese Journal of Phytopathology 34 (4), 289-297, 1968
The Phytopathological Society of Japan
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Details 詳細情報について
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- CRID
- 1390001206402187520
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- NII Article ID
- 130003912784
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- ISSN
- 18820484
- 00319473
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed