FGSC #8607

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Reporting Genes: al-2; cys-10; E

Species: tetrasperma

Allele: 102; 39816 (from N. crassa); E

Alternate Strain Number: 4941-40

Depositor: DDP

Linkage Group: IR; IVL

Mating Type: A

Species Number: 12

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
cys-10	IVL. Left of acon-3 (1 to 6%), ace-4 (19 to 33%), and cut (28 to 37%) (578, PB). (721) Uses cysteine, cystathionine, homocysteine, or methionine, with a slight response to thiosulfate (469, 596, 721); however, E. Kafer (personal communication) found good growth on thiosulfate. Growth is better on casein hydrolysate than on methionine (D.D. Perkins, unpublished data). cys-10 chol-1double mutants grow better on methionine alone than on methionine plus choline (721). Lacks sulfite reductase, as do cys-2 and cys-4mutants (596). Formerly called met-4; see reference 721.	IVL	B
calC	ts		A
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