Gametophytic maternal effect
WebThe first gametophytic structure is the modification of microspore mother cell into the pollen grain. The pollen grain grows into the male gametophyte on germination which is initiated … WebMinamikawa, "Pollen-expressed F-box gene family and mechanism of S-RNase-based gametophytic self-incompatibility (GSI) in Rosaceae," Sexual Plant Reproduction, vol. …
Gametophytic maternal effect
Did you know?
WebJan 19, 2024 · The study of the steroid profile of maternal and gametophytic tissues of wild-type (WT) and adxr ovules revealed that homocastasterone is mostly found in … WebDec 22, 2016 · In Arabidopsis, the trait can be maternally regulated but the underlying mechanisms sustaining this regulation, its general occurrence and its biological significance among accessions are poorly understood. Upon seed imbibition, the endosperm is essential to repress the germination of dormant seeds.
WebJan 15, 2010 · The reduced female gametophyte of flowering plants enabled much more rapid seed setting (i.e. the production of seeds during reproductive growth) than is possible in gymnosperms, allowing for habitat adaptations that require short reproductive cycles and facilitating the expansion of flowering plants into diverse ecological niches. Box 1. Glossary
WebMay 15, 2000 · The results of both crosses together indicate that EMB30 is indeed a maternal-effect gene for early seed development. If EMB30 is a strict gametophytic-maternal-effect gene, then 50% of the mature seeds from an emb30/+ plant should be defective in seed development, regardless of the source of the pollen. Webexpected consequence of a maternal gametophytic effect of met1-3/+, which should produce a greater proportion BASTA resistance among the largest seeds in a population derived from met1-3/+6wt crosses. To confirm this finding we compared BASTA resistance and seed size in an entire population of seeds from met1-3/+6wt crosses from a single …
WebThe functions performed by the megagametophyte includes both basic cellular functions and functions that unique to the megagametophyte, such as pollen tube guidance and reception, as well as processes associated with double fertilization and …
WebSep 1, 1998 · The gametophytic maternal effect mutant medea (mea) shows aberrant growth regulation during embryogenesis in Arabidopsis thaliana, consistent with the parental conflict theory for the evolution of parent-of-origin-specific effects. Expand. 842. View 1 excerpt, references background; rachel and chloe clothingWebga·me·to·phyte. (gə-mē′tə-fīt′) In plants, fungi, and certain algae, the individual organism or generation of organisms that produces reproductive cells (called gametes). Each cell of … rachel and carla what\u0027s cookingWebApr 17, 1998 · The gametophytic maternal effect mutant medea ( mea) shows aberrant growth regulation during embryogenesis in Arabidopsis thaliana. Embryos derived from … shoes and things virginiaWebOct 27, 2016 · One of our mutants, medea, is of particular interest because it displays a gametophytic maternal effect on seed development. If the seed is derived from a mutant medea gametophyte, the seeds abort … shoes ankle strap extensionWebMaternal control of higher plant seed development is likely to involve female sporophytic as well as female gametophytic genes. While numerous female sporophytic mutants … shoes and trainersWebMay 1, 2000 · We hypothesize that ‘maternal’ effect mutations in plants result from failure of the central cell and/or embryonic lineage due to loss of essential maternal protein or transcript stores. By analogy with Drosophila, many essential genes are therefore predicted to display a range of mutant phenotypes similar to that observed in prolifera mutants. shoes animatedWebJul 27, 2016 · Analysis of gametophytic maternal effect mutants have revealed several possible causes for the defects, including: (1) abnormal embryo sac morphology; (2) loss … rachel and chase