FGSC #7384

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Reporting Genes: cum Sk-2K acr-2

Species: crassa

Allele: P5241 J KH5

Alternate Strain Number: 3268

Depositor: BCT

Linkage Group: III III III

Mating Type: a

Species Number: 10

Opposite Mating Type: 7384

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
acr-2	III. Linked to thi-4 (0/286). Left of sc (3 to 6%) and spg (1 to 11%) (498, 816). acr-2 has been shown left of the centromere on published maps but without direct evidence. acr-2and trp-1 (on IIIR) cosegregated at the second division in 1 of 13 asci (H.B. Howe, Jr., personal communication), which would favor a right arm location. Resistant to acriflavine (494, 495); also resistant to 3-amino-1,2,4-triazole (seven alleles tested) (494). Resistance is probably dominant (heterokaryon tests) (498). Not resistant to malachite green. An excellent stable marker, fully fertile, with unambiguous scoring. Sizable inocula should be used to avoid false-negative tests. Use acriflavine at 50 µg /ml in minimal agar medium (816) (higher concentrations may be used) and aminotriazole at 0.5 mg/ml; both added before autoclaving.	III	B
Sk-2K			B
cum	IIIL. Left of r(Sk-2) (4%), acr-7 (5 to 18%), and acr-2(18%). No recombination with Sk-2K. (PB; B.C. Turner, personal communication) Initially colonial; then spreads and sends up blooms of aerial hyphae which conidiate profusely at the shallow ends of agar slants. Good female fertility. Similar in morphology to the mutants sn and sp and to the mutant cot-4 at 25 C (PB).	IIIL	B