日本植物病理学会報
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
イネ内頴褐変病菌のイネ籾への感染経路
田部井 英夫畔上 耕児福田 徳治
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1988 年 54 巻 5 号 p. 637-639

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The causal bacterium entered lemmata and paleae through stomata, and multiplied in the intercellular space of the parenchyma. Stomata are mainly open on the inner surface of lemmata and paleae, few on outer surface of lemmata, and they are connected each other through the intercellular space of parenchyma. This infection site does not seem specific phenomenon with regard as in case of Erwinia herbicola. The bacterial grain rot caused by Pseudomonas glumae and the bacterial seedling blight caused by P. plantarii followed this infection pattern to the rice grain. It is suggested that the seed-borne bacterial disease of rice generally follow this course of life cycle. Browning occurred only on the inner surface and the parenchyma of the palea affected with E. herbicola, and is suspected to be one of the defensive reaction of the palea against E. herbicola.

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