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Cell potency is a cell's ability to differentiate into other cell types. [1] [2] The more cell types a cell can differentiate into, the greater its potency.Potency is also described as the gene activation potential within a cell, which like a continuum, begins with totipotency to designate a cell with the most differentiation potential, pluripotency, multipotency, oligopotency, and finally ...
The liver receptor homolog-1 (LRH-1) also known as totipotency pioneer factor NR5A2 (nuclear receptor subfamily 5, group A, member 2) is a protein that in humans is encoded by the NR5A2 gene. [ 5 ] [ 6 ] LRH-1 is a member of the nuclear receptor family of intracellular transcription factors .
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Such cells, called somatic cells, make up most of the human body, such as skin and muscle cells. Cells differentiate to specialize for different functions. [8] Germ line cells are any line of cells that give rise to gametes—eggs and sperm—and thus are continuous through the generations. Stem cells, on the other hand, have the ability to ...
This has given rise to the concept of totipotency of plant cells. [4] [5] However, this is not true for all cells or for all plants. [6] In many species explants of various organs vary in their rates of growth and regeneration, while some do not grow at all.
Transformed cells can be treated with a series of plant hormones, such as auxins and gibberellins, and each may divide and differentiate into the organized, specialized, tissue cells of an entire plant. This capability of total re-generation is called totipotency. The new plant that originated from a successfully transformed cell may have new ...
However, different cells express different subsets of these genes. The evidence for nuclear equivalence comes from cases in which differentiated cells or their nuclei have been found to retain the potential of directing the development of the entire organism. Such cells or nuclei are said to exhibit totipotency. [1]
His original idea presented in 1902 was called totipotentiality (now termed as totipotency): “Theoretically all plant cells are able to give rise to a complete plant.” [3] [4] [5] In his 1905 work "Die lichtsinnesorgane der laubblätter" Haberlandt suggested that plants might be able to see using organs on the upper surface of the leaf. [6] [7]