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Powdery Mildew

11/13/2014
Sawadaea sp. (Erysiphaceae, Erysiphales) is a powdery mildew that infects Acer sp. (Maple). Infected maple leaves, usually on the adaxial surface, are covered with dense mycelia (of white to grey powder colour) with scattered chasmothecia (fruiting body, brown to dark-brown ball-like structure). When observed microscopically, appendages are often dichotomously branched ...

Powdery Mildew

11/07/2014
Fruiting body (Chasmothecium) of Phyllactinia sp., Erysiphales. Chasmothecium is a specific type of fruiting body amongst Ascomycota (others are Apothecium and Perithecium) with no natural opening. Appendages of Chasmothecium are currently used as distinguishing feature amongst Erysiphales genera. An instance, straight and bristle-like appendages with bulb-like base are features of ...

Exoenzyme activity

09/22/2013
Ms. Karen Alarcon, 3rd yr - BS Biology student from St. Paul University Quezon City, Philippines is doing an exercise on exoenzyme screening by select bacterial isolates. On the picture, bacteria on starch agar flooded with iodine was analysed for the production of exoenzyme amylase.

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