FGSC #157

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Reporting Genes: nic-3 wc-1 arg-10

Species: crassa

Allele: Y31881 P829 B317

Alternate Strain Number: 7053

Depositor: DDP

Linkage Group: VIIL VIIR VIIR

Mating Type: A

Species Number: 10

ref1: https://www.genetics.org/content/44/6/1185.long 1960 mimeo sheet accompaning 1959 Genetics paper

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
arg-10	Uses arginine but not precursors.	VIIR	B
nic-3	VIIL. Right of spco-4 (1%) and do (3%). Left of thi-3 (9 to 27%) and csp-2 (16 to 22%) (539, 812, 816, PB). (M.K. Allen, cited in references 718 and 789) Uses nicotinic acid, nicotinamide, 3-hydroxyanthranilic acid, 3-hydroxykynurenine, or high concentrations of quinolinic acid (96, 1168). Accumulates alpha-N-acetylkynurenine; blocked in conversion of kynurenine to 3-hydroxykynurenine (1168) (Fig. 18). Pyridine nucleotide levels (111). Pathway from tryptophan to nicotinic mononucleotide, showing sites of gene action (96, 100, 368, 1168). The enzymatic reactions between 3-hydroxyanthranilate and nicotinic mononucleotide have not been demonstrated directly in Neurospora.	VIIL	B
wc-1	VIIR. Right of met-9 (1 to 4%). Left of un-10 (7%) and for (6%) (724, 812, 816). Carotenoids absent from mycelia; conidia become pigmented with some delay. Named because nonconidiating rim at top of agar slant remains white. A double mutant with flor other nonconidiating mutant would be classed as albino. Regulatory mutants for photoinduced carotenogenesis via blue light receptor might be expected to have a similar phenotype (444, 445). A blue light treatment (given in vivo), which increases the activity of soluble and microsomal enzymes required for phytoene biosynthesis in the wild type, does not do so in the mutant wc-1 (445). Fails to show phototropism of perithecial beaks when used as the female (protoperithecial) parent, but not when used as the male (fertilizing) parent (R. W. Harding, personal communication). Useful genetic marker (725, 800). Scoring clearest at high temperatures (34 C).	VIIR	B