A Method for Staining Infection Hyphae in Pine Leaves |
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Authors: | Janardhanan Nair |
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Institution: |
a Department of Botany, University of Auckland, Auckland, New Zealand |
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Abstract: | Fungus-inoculated Pinus radiata leaves were fixed and then stained with periodic acid-Schiff reagent. Pieces of leaf with fungal material on the surface were removed. These pieces were stained in lactophenol cotton blue for a few minutes and then mounted in dilute lactophenol cotton blue. Microscopic examination of fungal material inside and outside the mounted leaf pieces revealed the following: conidia and germ tubes on the leaf surface were red, appressoria remained unstained, and infection hyphae within the leaf were stained blue. This differential staining method was particularly useful for distinguishing germ tubes from infection hyphae arising from appressoria. |
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