FGSC #4512

Mutant Type

Genus: N

reporting_genes: tre;inl

species: Neurospora crassa

allele: 39-25;89601

stock: MLS 39-25

glasgow:

mutagen: NG

Depositor: MLS

Link Group: IR;VR

MT: A

Species No: 10

gene_back: M

oppmt: 0

trans:

ref1: Sussman et al 1971 J Bact 108:59, https://doi.org/10.1128/jb.108.1.59-68.1971

ref2: Garrett et al 1972 Nature New Biology 235:119, https://doi.org/10.1038/newbio235119a0

site:

country:

ksudc_link: https://digital.lib.k-state.edu/item/neurospora-crassa/fgsc-4512

ksudc_link_html: https://digital.lib.k-state.edu/item/neurospora-crassa/fgsc-4512 ↗

Genes

Locus	Cultural Requirements	Link Group	Type
tre	IR. Between met-6 (7%) and al-2 (20 to 37%); near mig(< < 1%) (1045, 1176). Shown between met-6 and ad-9 (7%) in reference 466, with only two-point data given. Unable to use trehalose as carbon source. Lacks trehalase activity. (Also, the invertase level is reduced 50% and the amylase level is increased.) In (tre + tre+) heterokaryons, the trehalase level is reduced to 10% of the wildtype level, and in tre/tre+ duplications the level is reduced to 1% of the wild-type level. tre codes for trehalase inhibitor, probably a protein (1045). For a possibly related regulatory mutation, see reference 663. For putative structural gene, see mig.	IR	B
inl	VR. Between pho-3 (3 to 4%) and pab-1 (1 to 10%). Right of al-3 (362, 397, 1036). (482)Requires inositol (65). Lacks D-myoinositol-1-phosphatase (1142). Lack of glucocycloaldolase found by Pina and Tatum (826) is attributed by Williams (1142) to drastic repression of glucocycloaldolase by the concentration of inositol used for growth. Growth is colonial on low levels of inositol (367). Tends to extrude dark pigment into the medium when grown on suboptimal inositol. Composition of phospholipids and cell walls is abnormal on limiting inositol (367, 439, 440, 501). Inhibited by hexachlorocyclohexane (366, 457, 931). Conidia are subject to death by unbalanced growth on minimal medium (1028, 1033), a property exploited for mutant enrichment ("inositol-less death") (606, 647) because double mutants are at a selective advantage. Heat-sensitive allele 83201 is especially useful for mutant enrichment (832, 1043). Used in the first experiments reporting transformation of Neurospora by N. crassaDNA (677, 679) and reported to be efficient as a recipient in absence of inositol (1162). Used to study glucose (917) and sulfate (641) transport systems. Used extensively for studying induced reversion (392). Used for studying the mechanism of inositol-less death (647, 702), mutagenicity of ferrous ions, and regulation of mitochondrial membrane fluidity; for a review, see reference 702. Spontaneous reversion rates (386). Allele-specific partial suppressor (390). Allele 46802 is nonrevertable and inseparable from translocation 46802 (386, 808). Strains carrying heat-sensitive allele 83201 show slow semicolonial growth in liquid minimal medium at 25°C (641), but look normal on slants (D.D. Perkins, unpublished data). Strains carrying allele 89601 contain cross-reacting material (1183). Mutant gene exo-1 is present in the inl(89601) a stock FGSC 498 and may, therefore, be present in stocks of mutants derived by inositol-less death. (See references 194, 325, and 1027). Called inos.	VR	B