FGSC #3789

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Reporting Genes: ro-10 al-2 un-18

Species: crassa

Allele: AR7 15300 T54M94(t)

Alternate Strain Number: 1694

Depositor: DDP

Linkage Group: IL IR IR

Mating Type: A

Species Number: 10

Opposite Mating Type: 3790

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
ro-10	IL. Left of fr (18%) (PB). Resembles ro-1 (PB)	IL	B
un-18	IR. Right of T(NM169d) and R (11%) (808). Unknown function. Heat sensitive (507). No growth at 34°C. Growth at 25 C is substantial but not wild type, and better on complete medium than on minimal medium. Allele T54M94 is called 41 in reference 507.	IR	B