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Download e-book for kindle: Xanthomonas by A. C. Hayward (auth.), J. G. Swings, E. L. Civerolo (eds.)

By A. C. Hayward (auth.), J. G. Swings, E. L. Civerolo (eds.)

ISBN-10: 9401046662

ISBN-13: 9789401046664

ISBN-10: 9401115265

ISBN-13: 9789401115261

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Trends in Microbiology
`... a very good evaluation of plant ailments because of Xanthomonas, and provides an perception into the ecology and biology of this bacterium, in addition to into genetic loci taking part in a task within the interplay with the plant...I think that this very well-written publication should be of significant price to complicated scholars and to specialists in either classical and molecular plant pathology, in addition to to readers attracted to plant-bacterium interactions.'
Plant Science

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`. .. the ultimate (eighth) bankruptcy through Sutherland presents a useful resource of knowledge concerning the synthesis, constitution, commercial utilization and nutrients functions of the xanthan polymer. .. very transparent and informative. .. necessary common precis tables of vectors and houses of avirulence genes are given.

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Sample text

Race 1 isolates appear to be dominant in fields where rice cultivars possessing no Xa-4 gene for resistance were planted. In contrast, race 2 became prevalent in fields planted to rice cultivars possessing the Xa-4 gene. ' This has become a key issue in the control of the disease. In China, many investigations and observations have shown that the bacterial pathogen can be detected and isolated from seed. Chinese scientists have further proved that the bacteria can survive in rice seed. Seedlings were shown to be infected if derived from seeds harvested from a diseased crop.

It is therefore difficult to repeat the experiments. Later, when the phage technique was applied to detect Xoo in rice seed harvested from infected fields, the results were positive, thus proving that Xoo is seedborne. Because there are different views on the source of primary infection, the control measures also use different approaches. Reports from China indicate that seed treatment has resulted in both reduction of leaf infection and the number of focal centres. However, there were many cases which indicate that seed treatment did not produce the expected control of this disease.

Quantity and quality of exopolysaccharides may partially explain differences in virulence of races of X. c. pv. malvacearum (Zachowski, 1989). W. 1 Introduction There are two bacterial diseases of rice with which xanthomonads are associated: bacterial blight (BB) caused by X. oryzae pv. oryzae (Xoo), and bacterial leaf streak (BLS) caused by X. oryzae pv. oryzicola (Xocola). For many years they were thought to occur only in Asia until Aldrick et al. (1973), Lozano (1977) and several others (Reckhaus, 1983; Mew, 1989) reported that BB was present in Australia, Latin America and Xanthomonas oryzae pathovars on rice 31 Africa, respectively.

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Xanthomonas by A. C. Hayward (auth.), J. G. Swings, E. L. Civerolo (eds.)

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