Interaction of two loci that affect trichome density in upland cotton

Article Abstract:

An inheritance model helps understand the interaction between the T1 gene and T(sub 2)(super arm) gene of upland cotton Gossypium hirsutum L. The gene T1 induces pubescence of the stems and leaves, while the T(sub 2)(super arm) gene restricts hair growth to the leaf margins. Verification of the model using some plant populations indicates the epistatic nature of the T(sub 2)(super arm) gene on T1 gene, except when T1 is homozygous or when the presence or absence of trichomes on the leaves regulates the phenotypic classes.

Models, Genetic aspects, Developmental genetics, Cotton (Fiber), Cotton, Trichomes, Trichomes (Botany)

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Interacting hobo transposons inn an inbred strain and interaction regulation inn hybrids of Drosophila melanogaster

Article Abstract:

Atransposable hono element in the Notch locus of the Uc-1 X chromosome, which refrains from disrupting the normal expression of the locus, acts with other such elements in the same X chromosome to generate Notch mutations. Two distinct systems can repress this interaction. One process in the three inbred strains is connected to the Uc-1 strain and has a maternal influence that is not the result of hobo elements. Another process ostensibly needs genetic factors or hobo elements in specific strains of Oregon-R.

Transposons

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Eyeing tumorigenesis: Notch signaling and epigenetic silencing of Rb in Drosophila

Article Abstract:

The Drosophila eyes are used as model system to find out that elevated Notch signaling in combination with activation of components of the Polycomb complex of transcriptional repressors lead to metastatic growth of tumors through epigenetic silencing of the Rbf gene. Rbf is the Drosophila homologue of the retinoblastoma tumorosuppressor gene (Rb) and it represents a novel link between Notch signaling, tumor growth and metastasis.

Tumor suppressor genes, Genetic research, Retinoblastoma, Tumour suppressor genes

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