Rapid pre-germination responses of Erisyphe pisi conidia to contact and light

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dc.contributor.author Fujita, Keiko
dc.contributor.author Carver, Timothy L. W.
dc.contributor.author Meguro, Akane
dc.contributor.author Kunoh, Hitoshi
dc.contributor.author Wright, Alison J.
dc.date.accessioned 2009-10-17T12:27:22Z
dc.date.available 2009-10-17T12:27:22Z
dc.date.issued 2004-04
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 . en
dc.identifier.issn 1345-2630
dc.identifier.other PURE: 123692
dc.identifier.other dspace: 2160/3238
dc.identifier.uri http://hdl.handle.net/2160/3238
dc.description Fujita, K., Wright, A. J., Meguro, A., Kunoh, H., Carver, T. L. W. (2004). Rapid pre-germination responses of Erisyphe pisi conidia to contact and light.   Journal of General Plant Pathology, 70, (2), 75-84. en
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
dc.format.extent 10 en
dc.language.iso eng
dc.relation.ispartof Journal of General Plant Pathology en
dc.subject Erysiphe pisi en
dc.subject Blumeria graminis en
dc.subject Conidia en
dc.subject Germination en
dc.subject Contact en
dc.subject Phototropism en
dc.subject Photoresponse en
dc.subject Extracellular material (ECM) en
dc.title Rapid pre-germination responses of Erisyphe pisi conidia to contact and light en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1007/s10327-003-0093-4
dc.contributor.institution Aberystwyth University en
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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