Show simple item record Keiko en_US Timothy L. W. en_US Akane en_US Hitoshi en_US Alison J. en_US 2009-10-17T12:27:22Z 2009-10-17T12:27:22Z 2004-04 en_US
dc.identifier en_US
dc.identifier.citation Fujita , K , Carver , T L W , Meguro , A , Kunoh , H & Wright , A J 2004 , ' Rapid pre-germination responses of Erisyphe pisi conidia to contact and light ' Journal of General Plant Pathology , vol 70 , no. 2 , pp. 75-84 . , 10.1007/s10327-003-0093-4 en_US
dc.identifier.other PURE: 123692 en_US
dc.identifier.other dspace: 2160/3238 en_US
dc.description.abstract In darkness, most Erysiphe pisi conidia responded rapidly to contact with a hydrophobic artificial substratum and released extracellular material (ECM) in the same way as on pea cuticle. On this substratum and barley leaf epidermis, conidia then produced a germ tube that emerged close to the substratum, contacted it, and differentiated an appressorium. By contrast, on a hydrophilic substratum, ECM release and germination were delayed and infrequent, and germ tubes often emerged and faced away from the substratum toward vertical light, thereby failing to make contact and form appressoria. This finding supported the hypothesis that ECM release is involved in both triggering germination and sensing substratum contact. Exposure to white light dramatically affected the germ tube emergence site so most emerged from a site in the conidial wall facing the light. Lateral light did not affect the frequency of germ tubes making substratum contact; but when lit from above, most germ tubes emerged up, facing away from the substratum. The germ tubes formed in light were longer than those formed in darkness, but no phototropism was found for the elongating tubes. Examination of Blumeria graminis indicated that its conidia and germ tubes are insensitive to white light. en_US
dc.format.extent 10 en_US
dc.relation.ispartof Journal of General Plant Pathology en_US
dc.subject Erysiphe pisi en_US
dc.subject Blumeria graminis en_US
dc.subject Conidia en_US
dc.subject Germination en_US
dc.subject Contact en_US
dc.subject Phototropism en_US
dc.subject Photoresponse en_US
dc.subject Extracellular material (ECM) en_US
dc.title Rapid pre-germination responses of Erisyphe pisi conidia to contact and light en_US
dc.contributor.pbl Aberystwyth University en_US
dc.contributor.pbl Institute of Biological, Environmental and Rural Sciences en_US

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