Mycelium is differen­tiated into nodes and internodes. The identification of the cultured pathogen as Alternaria alternata was also carried out based on colony morphology and conidial size (Ellis, 1971; Shakir et al., 1997). Stewart [42] used . A. vanuatuensis produced diffusible pigments on PDA and V8 juice agar, but not on MEA. In aging or axenic growth, excessive cellular swelling was recognized characteristically in the fungus. Malt Extract Agar - variation in colony morphology - Poster Subject: Malt Extract Agar - variation in colony morphology - Poster Keywords: Malt Extract Agar - variation in colony morphology - Poster, mycology, fungi, MEA, colony color, aspergillus, cladosporium, dematiacieous, penicillium, Hardy Diagnostics Created Date: 5/17/2006 5:48:04 PM Media Colony diameter (mm) Sporulation . Alternaria species have been generally identified and classified based on cultural and conidial morphology [5, 6, 7]. The nodal region bears much branched rhizoid grows downward, inside the substratum for anchorage and absorption of food. The conidia of the isolates formed in natural habitats usually had long beaks and were more uniform in size than those produced in vitro. The colony morphology of A. vanuatuensis was similar to that of A. porri. Open Access Journal of Agricultural Research Meena M, et al. using metabolic profiling, morphology of the colony on standardized media and pattern of the conidial branching [31-41]. Figure 1: Colony morphology of different Alternaria alternata isolates on PDA plates. Classification: Ascomycete Morphology: Cell: Colony: Malt agar: Brownish Grey to black with white edges, producing a “suede-like” coating of spore stalks. I. The optimum pH levels of Alternaria solani grow in vitro were 6-7 and the optimum growing temperatures of the isolates recovery in this study was 25 and 30°C. The conidial morphology of each fungal isolate was carefully noted and compared with those given in the standard manuals for its confirmation. Colony morphology observation was conducted by incubation of the isolates on Alternaria spp., including A. alternata, exhibit considerable mor-phological plasticity that is dependent upon cultural conditions of substrate, temperature, light, and humidity (17,29). Evaluation of Alternaria alternata Isolates for Metabolite Production Isolated from Different Sites of Varanasi, India. Types of conidia found on PCA (A). Alternaria Apophysomyces Basidiobolus Bipolaris Botrytis Cokeromyces Conidiobolus Curvularia ... Rhizopus Stemphylium Trichophyton Ulocladium Having miscellaneous microscopic morphology Chaetomium Coccidioides Madurella Phoma Ustilago Yellow to … Scale bars b-e and g 20 μm; f 50 μm Alternaria infectoria and Stemphylium herbarum of pyrethrum 97 Fig. After 5–7 days in culture, colonies of A. tenuissima reach a diameter of 5 cm on PCA or V-8 agar (vegetable juice agar). Unlike many other species of Alternaria, the conidiophores of A. tenuissima can develop in darkness after the colony has been exposed to light even very briefly; however its growth is more robust with longer periods of light exposure. The Alternaria alternata colony grew well on PDA medium and formed an olivaceous … Growth and morphology. 2.6. Rhizopus stolonifer: morphology and reproduction of black bread mold. 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