Ovule development: genetic trends and evolutionary considerations
نویسندگان
چکیده
منابع مشابه
The molecular and genetic control of ovule development.
A genetic approach has resulted in an extensive framework for the methodical analysis of ovule development. The most recent progress was accomplished in the areas of primordium formation and integument morphogenesis. Furthermore, systematic screens have identified a number of gametophytic mutations disrupting several distinct steps of embryo sac ontogenesis.
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Ovule development in Arabidopsis and other plants has been the focus of classic and molecular genetic analyses in recent years. This has been an exciting time to be involved in plant developmental biology, because many genetic pathways and regulatory mechanisms have been elucidated. Continued studies of ovule mutants have contributed to and benefited from these advances. Ovule development invol...
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Genetic analyses, particularly in Arabidopsis, have led to the identification of mutants that define different steps of ovule ontogeny, pollen stigma interaction, pollen tube growth, and fertilization. Isolation of the genes defined by these mutations promises to lead to a molecular understanding of these processes. Mutants have also been obtained in which processes that are normally triggered ...
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Sports and sports facilities development have improved rapidly over the past years in Malaysia. However, such improvements are inadequate compared to the overall development of sports at international level. Through preliminary interview with the managers, it was learnt that the sports facilities are underutilised and people do not use them. In addition, an increase in the amount of public mone...
متن کاملSeedless fruits and the disruption of a conserved genetic pathway in angiosperm ovule development.
Although the biological function of fruiting is the production and dissemination of seeds, humans have developed seedless fruits in a number of plant species to facilitate consumption. Here we describe a unique spontaneous seedless mutant (Thai seedless; Ts) of Annona squamosa (sugar apple), a member of the early-divergent magnoliid angiosperm clade. Ovules (seed precursors) of the mutant lack ...
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ژورنال
عنوان ژورنال: Sexual Plant Reproduction
سال: 2009
ISSN: 0934-0882,1432-2145
DOI: 10.1007/s00497-009-0107-2