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Nitrogen requirements of the fungal endophytes of Arundina chinensis

1971; Canadian Science Publishing; Volume: 49; Issue: 3 Linguagem: Inglês

10.1139/b71-067

1480-3305

R. C. Stephen, KL Fung,

Plant Pathogens and Fungal Diseases

The nitrogen requirements of two Rhizoctonia fungus endophytes of the orchid Arundina chinensis are reported. Both isolates were capable of using ammonium and organic nitrogen but not nitrate or atmospheric nitrogen. Glutamic acid and urea were the best of the nitrogen sources tested followed by arginine, then asparagine. Proline and methionine were not used. The addition of a mixture of vitamins to the amino acids increased growth of one of the isolates but not the other. Yeast extract supported greatest growth.