PHYLOGENY AND BIOCHEMISTRY OF THE GENUS HANSENULA

I. Phylogeny ........................................................ 382 A. Introduction ........................................................ 382 B. Ploidy in Homothallic Species........................................................ 384 C. Ploidy in Heterothallic Species........................................................ 385 D. Number of Sugars Fermented and Intensity of Fermentation............................ 386 E. Ester Production......................................................... 387 F. Vitamin Requirements ......................................................... 387 G. Characteristics of the Colony Surface .................................................. 387 H. Antigenic Analysis......................................................... 388 I. Genera Closely Related to Hansenula................................................... 388 II. Biochemistry......................................................... 389 A . Introduction ........................................................ 389 B. Phosphomannans ........................................................ 389 C. Zymonic Acid........................................................ 392 D. Sphingolipids ........................................................ 392 E. Invertase........................................................ 393 F. Sexual Agglutination........................................................ 394 III. Literature Cited ........................................................ 395

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