Biology, asked by kennacario, 1 year ago

what genes are involved in plant development?

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Answered by ggggg62
1

Answer: Plant genetics and development as separate endeavors :

There is no indication that Mendel thought of his characters as developmental alterations, or that he considered his work related to developmental biology as it existed in his day (for example in the work of Payer [6], Fig. 1A, on flower development). The detailed study of plant development began even earlier, not long after the foundation of the Académie des Sciences, with Caspar Friedrich Wolff's 1759 thesis (see Wolff, 1774 [7]), where meristems first were described, with Nehemiah Grew's The Anatomy of Vegetables Begun in 1672 [8] that treated buds as growing shoots (p. 9), or perhaps with Marcello Malpighi's description of a plant embryo in 1679 [9]. The subjects of genetics and development appear to have been separated in the thinking of plant scientists for a very long time afterward, as Bateson points out in his 1894 Materials for the Study of Variation [10], “It has been the custom … to speak of ‘Heredity’ and ‘Variation’ as two antagonistic principles; sometimes they are even spoken of as opposing ‘forces”’ [p. 75]. Bateson agrees with this custom: “In the first examination of the facts of Variation, I believe it is best to attempt no particular consideration of the working of Heredity” [p. 76].

That this principle was followed by his successors is indicated by the contents of widely used textbooks, such as Steeves and Sussex's Patterns in Plant Development (1972) [11], where genes and mutants do not seem to be mentioned. Mutants are mentioned in the 1989 update of the book [12], and represent the source of much of the developmental information by the 2003 text Mechanisms of Plant Development by Leyser and Day [13]. Thus, there was a transition from considering plant genetics and plant development as unrelated subjects, to considering genetic approaches to be the key to understanding the mechanisms of development that occurred over the past 50 years (see [14]). The use of genetics to understand plant development took far longer, then, than the rediscovery of Mendel's work in the early years of the past century.

To review the history of genetical analysis of plant development, we will take examples from the study of the development of shoots and flowers, a persistent and active subject throughout the history of botanical science. There are earlier examples of the use of developmental phenotypes of plants, such as fasciated plants or double flowers, to study modes of inheritance (for example, White [15], [16]; Miyake and Imai [17]; for additional examples in flower development see [18]), and a literature in which developmental mutants are considered as evidence for evolutionary scenarios (e.g., Saunders [19]) – that is, as atavisms. That this is an illogical way to infer evolutionary pathways has been pointed out, in detail, since at least 1900 (Goebel [20]; Leavitt [21]; Arber [22]). In the many works on what we now would call developmental mutants in plants that were published in the 19th and early 20th centuries, and summarized in the compilations of Moquin-Tandon [23], Masters [24], Penzig [25] and Worsdell [26], there was no consideration of whether the phenotypes were inherited (see [18]). The same can be said for Goethe's model for flower development based on abnormal flowers [27] – while this may be the first mechanistic consideration of development, heredity (as expected from the date) plays no role.

Another, later example of the use of genetics to understand the mechanism of development in a plant is Stebbins’ work on hooded and awned barley.

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Answered by sunita920
1

Answer:

i think it's a right answer

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