FGSC #8917

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Reporting Genes: arg-1 al-2 sup-3

Species: crassa

Allele: CD145, 15300, CAL-8

Alternate Strain Number: 833-33a,

Depositor: RHD

Linkage Group: IL, IR, IR

Mating Type: a

Species Number: 10

ref1: Davis 1979 Genetics 93:557-575, https://doi.org/10.1093/genetics/93.3.557; J Bact 1980 141:1305-11, https://doi.org/10.1128/jb.141.3.1305-1311.1980

ref2: Davis & Ristow 1983 J Bact 154:1046-1053, https://doi.org/10.1128/jb.154.3.1046-1053.1983

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
al-2	IR. Right of os-5 (<1%) and T(STL76). Left of arg-6(1%) and al-1 (797, 802, 808, 816, 818). Included in duplications from Tp(T54M94), confirming location left of arg-6(808). (482) Carotenoids absent or abnormal, but steroids produced (398). Blocked in microsomal fraction and defective in phytoene synthetase (445), a particulate enzyme (445 and references cited therein) (Fig. 9). Tracer experiments indicate a lesion between prephytoene pyrophosphate and phytoene (572). Alleles include those resulting in white and pale rose-white, e.g., 15300 and Y254MI65 (1042), and purple, e.g., MN58a (154). For complementation, see references 500 and 1041. Fine-structure mapping (500, 1042) needs reevaluation because of new information on the location of the arg-6 marker (797).	IR	B
arg-1	Uses arginine but not precursors.	IL	B
sup-3	Symbol changed to su.	IR	B