D. S. Robertson

Iowa State University

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P. S. Stinard

Urbana University

I. C. Anderson

Iowa State University

Patrick S. Schnable

Iowa State University

Martha G. James

University of Oxford

Marilyn D. Bachmann

Iowa State University

Alan M. Myers

Iowa State University

C. C. Bowen

Iowa State University

Peter N. Mascia

Ceres

Brent Buckner

University of Washington

David W. Morris

Aberystwyth University

Cooperative Institutions

Iowa State University

Cornell University

Agricultural Research Service

New York State College of Veterinary Medicine

United States Department of Agriculture

University of Georgia

University of California, Davis

University of California, Berkeley

Purdue University West Lafayette

University of California, Los Angeles

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Genetic analyses of a putativeMutator-induced deletion involving theblue fluorescent1(bf1) andbrown midrib4(bm4) loci in maize

Genome (1996)

D. S. Robertson

A putative Mutator-induced alteration (isolate) involving the blue fluorescent1 (Bf1) and the brown midrib4 (bm4) loci is described. This isolate (Bf1-Mu-044-4) was one of the blue fluorescent1 mutants in a large experiment designed to produce Mutator-induced mutations involving this locus. Evidence is presented supporting the conclusion that this alteration deletes all or part of both the bf1 and bm4 loci. The isolate is infrequently transmitted through the pollen, but is more readily transmitted through the egg, although at less than the expected frequency of 50% for a simple mutation. Heterozygotes of this isolate with the bm4-R allele have brown midribs. These brown midrib plants are shorter than homozygous bm4-R plants and approximately 50% of these Bf1-Mu-044-4/bm4-R heterozygotes do not reach maturity. One putative Mutator-induced bm4 mutation, which occurred in the course of the analysis of the Bf1-Mu-044 isolate, is described. Key words : Mutator, deletion, bf1-bm4 loci.

Heterozygote advantage

10.1139/g96-054

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Prometheus and Chiron

The Journal of Hellenic Studies (1951)

D. S. Robertson

In the last long trimeter speech of the Prometheus Vinctus Hermes describes to Prometheus the future course of his punishment: he will be swallowed up in the earth, and then after a long interval of time brought back to daylight for laceration by Zeus's eagle. Hermes goes on (1026 ff.): The only substantial variant is θεός τις F Tri. in 1027. There is no proof that ancient critics saw any definite allusion here. The Medicean scholium is simply ( Paley) πεισομένου, an obscure note to which I shall return. Matthias Garbitius (1559), the first scholar quoted by S. Butler in his variorum edition of 1809, suggested that the reference was either to Hercules or, more probably, to ‘some other hero’ destined to free the human mind from darkness and doubt, perhaps a Sibylline vision of the Christian redemption. This last fancy was defended anonymously in the Gentleman's Magazine for 1796 and found a belated champion in F. A. Paley, on the eve of his admission to the Church of Rome, in 1846—‘Ceterum venturum esse Messiam et descensurum in inferos antiquitus praedictum quis hic non agnoscit?’ Later Paley silently dropped this theory.

Allusion

Champion

HERO

10.2307/628196

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Tests of Mutator-induced events involving the Bf1 locus on the long arm of chromosome 9.

Maize genetics cooperation news letter (1990)

D. S. Robertson P. S. Stinard

Isochromosome

Long arm

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DNA sequence and transcript analysis of transposon MuA2, a regulator of Mutator transposable element activity in maize

Plant Molecular Biology (1993)

Martha G. James Michael J. Scanlon Minmin Qin D. S. Robertson Alan M. Myers

ORFS

Tn3 transposon

Stop codon

Direct repeat

Insertion sequence

10.1007/bf00023614

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Citations (24)

Additional information on Mutator-induced deletions involving the yg2 locus.

Maize genetics cooperation news letter (1990)

D. S. Robertson P. S. Stinard

Source

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Effects of substituting segments of the long arm of chromosome 10 from four inbred lines into inbred line W22 of maize

Journal of Heredity (1981)

D. S. Robertson Arnel R. Hallauer T. C. Kevern

Four modified W22 inbred lines were studied in which the distal 65 percent of the long arm of chromosome 10 had been incorporated from inbred lines B55, Oh93, CI187-2, and M14. These substituted lines were analyzed with respect to 11 plant and ear traits, in hybrid combinations with each other, and as hybrids with W22. In most instances, the substituted lines djd not perform as well as W22. In a few instances, performance was equal to W22, but never greater. Some hybrid combinations performed better than W22 in some traits, but jn no instances did hybrid combinations outperform the best substituted parent line. Heterotic effects were observed in nine instances involving hybrids between W22 and the substituted lines. These latter observations suggest that substituted inbred lines may provide insight into the role of certain chromosomal segments in heterosis.

Inbred strain

10.1093/oxfordjournals.jhered.a109540

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The location of Clm in maize: a possible duplicate gene locus

Journal of Heredity (1979)

D. S. Robertson

The Clm locus that partly duplicates the phenotype of cl has been placed on chromosome 8 and mapped at 27.8 crossover units from the breakpoint of translocation T8-9(6673) (8L.35). The duplicate nature of the Cland Clm loci is discussed.

Breakpoint

10.1093/oxfordjournals.jhered.a109227

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Tests of 4 controlling-element systems of maize for mutator activity and their interaction with Mu mutator

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis (1981)

D. S. Robertson Peter N. Mascia

10.1016/0027-5107(81)90198-6

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Citations (33)

Molecular characterization of four shrunken mutations induced in Mutator lines in Zea mays L

Plant Science (1991)

Joseph M. Anderson D. S. Robertson David W. Morris

10.1016/0168-9452(91)90184-a

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Citations (1)

GENETIC STUDIES OF EARWORM RESISTANCE IN MAIZE: Utilizing a Series of Chromosome-Nine Translocations

Journal of Heredity (1963)

D. S. Robertson E. V. Walter

Journal Article GENETIC STUDIES OF EARWORM RESISTANCE IN MAIZE: Utilizing a Series of Chromosome-Nine Translocations Get access DONALD S. ROBERTSON, DONALD S. ROBERTSON Search for other works by this author on: Oxford Academic PubMed Google Scholar E. V. WALTER E. V. WALTER Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Heredity, Volume 54, Issue 6, November 1963, Pages 267–272, https://doi.org/10.1093/oxfordjournals.jhered.a107264 Published: 01 November 1963

Heredity

10.1093/oxfordjournals.jhered.a107264

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Citations (5)