Durgadas P. Kasbekar
Articles written in Journal of Genetics
Volume 71 Issue 1-2 August 1992 pp 57-59 Book Review
Volume 72 Issue 1 April 1993 pp 43-43 Book Review
Volume 77 Issue 1 April 1998 pp 37-40
Durgadas P. Kasbekar Bhavani T. Prasanna M. Vairamani
Cellular slime mould amoebae can be induced to become resistant to an otherwise inhibitory concentration of pisatin, an isoflavonoid phytoalexin of pea, if they are first treated with a subinhibitory concentration. We report here the serendipitous isolation of pisatin-resistant mutants in the cellular slime mould
Volume 77 Issue 2-3 August 1998 pp 71-75
K. Aparna Robert W. Sandrock Durgadas P. Kasbekar
We have cloned the
Volume 78 Issue 1 April 1999 pp 1-1
Franklin W. Stahl J. Gowrishankar S. Mahadevan Durgadas P. Kasbekar
Volume 80 Issue 1 April 2001 pp 53-54 Book Review
Volume 80 Issue 2 August 2001 pp 55-61
Felicite K. Noubissi K. Aparna Kevin McCluskey Durgadas P. Kasbekar
A convenient assay to score repeat-induced point mutation (RIP) in
Volume 88 Issue 1 April 2009 pp 33-39 Research Article
Srividhya V. Iyer Mukund Ramakrishnan Durgadas P. Kasbekar
The
Volume 96 Issue 3 July 2017 pp 457-463 Review Article
Ascus dysgenesis in hybrid crosses of Neurospora and Sordaria (Sordariaceae)
When two lineages derived from a common ancestor become reproductively isolated (e.g. Neurospora crassa and N. tetrasperma), genes that have undergone mutation and adaptive evolution in one lineage can potentially become dysfunctional when transferred into the other, since other genes have undergone mutation and evolution in the second lineage, and the derivedalleles were never ‘tested’ together before hybrid formation. Bateson (1909), Dobzhansky (1936), and Muller (1942) recognized that incompatibility between the derived alleles could potentially make the hybrid lethal, sterile, or display some other detriment. Alternatively, the detrimental effects seen in crosses with the hybrids may result from the silencing of ascus-development genes bymeiotic silencing by unpaired DNA (MSUD). Aberrant transcripts from genes improperly paired in meiosis are processed into single-stranded MSUD-associated small interfering RNA (masiRNA), which is used to degrade complementary mRNA. Recently, backcrosses of N. crassa / N. tetrasperma hybrid translocation strains with wild-type N. tetrasperma were found to elicit novel ascus dysgenesis phenotypes. One was a transmission ratio distortion that apparently disfavoured the homokaryotic ascospores formed following alternate segregation. Another was the production of heterokaryotic ascospores in eight-spored asci. Lewis (1969) also had reported sighting rare eight-spored asci with heterokaryotic ascospores in interspecific crosses in Sordaria, a related genus. Ordinarily, in both Neurospora and Sordaria, the ascospores are partitioned at the eight-nucleus stage, and ascospores in eight-spored asci are initially uninucleate. Evidently, in hybrid crosses of the family Sordariaceae, ascospore partitioning can be delayed until after one or more mitoses following the postmeiotic mitosis.
Volume 100 All articles Published: 8 February 2021 Article ID 0001 EDITORIAL
Reflections on genetics through the looking glass
Volume 101 All articles Published: 3 January 2022 Article ID 0001 EDITORIAL
The first reported paramutation.
Volume 101, 2022
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