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Soil-borne wheat mosaic virus is a rod-shaped plant pathogen that can cause severe stunting and mosaic in susceptible wheat, barley and rye cultivars. [1] The disease has often been misdiagnosed as a nutritional problem, but this has actually allowed in part for the fortuitous visual selection by breeding programs of resistant genotypes.
For example, in mammals, somatic cells make up the internal organs, skin, bones, blood, and connective tissue. [1] In most animals, separation of germ cells from somatic cells (germline development) occurs during early stages of development. Once this segregation has occurred in the embryo, any mutation outside of the germline cells can not be ...
When it feeds on wheat, A. tosichella transmits the wheat streak mosaic virus. Infected plants show long yellow streaks, associated with some degree of chlorosis which may lead to death of the affected foliage. In Oklahoma, the disease usually appears in late April and early May when the weather warms up. [12]
Somatic cells are more commonly used for genetic analysis because they are easier to obtain than gametes. If the disease is a result of pure germline mosaicism, then the disease causing mutant allele would never be present in the somatic cells. This is a source of uncertainty for genetic counselling. An individual may still be a carrier for a ...
Whatever may happen to those cells does not affect the next generation. The Weismann barrier, proposed by August Weismann, is the strict distinction between the "immortal" germ cell lineages producing gametes and "disposable" somatic cells in animals (but not plants), in contrast to Charles Darwin's proposed pangenesis mechanism for inheritance.
Wheat streak mosaic virus (WSMV) is a plant pathogenic virus of the family Potyviridae that infects plants in the family Poaceae, especially wheat (Triticum spp.); it is globally distributed and vectored by the wheat curl mite, particularly in regions where wheat is widely grown.
New tests done by the Environmental Working Group have found 21 oat-based cereals and snack bars popular amongst children to have "troubling levels of glyphosate." The chemical, which is the ...
This article is a list of diseases of wheat (Triticum spp.) grouped by causative agent. Bacterial diseases. Bacterial diseases; Bacterial leaf blight