Plant Embryogenesis: Zygote to Seed

  title={Plant Embryogenesis: Zygote to Seed},
  author={Robert B. Goldberg and Genaro de Paiva and Ramin Yadegari},
  pages={605 - 614}
Most differentiation events in higher plants occur continuously in the postembryonic adult phase of the life cycle. Embryogenesis in plants, therefore, is concerned primarily with establishing the basic shoot-root body pattern of the plant and accumulating food reserves that will be used by the germinating seedling after a period of embryonic dormancy within the seed. Recent genetics studies in Arabidopsis have identified genes that provide new insight into how embryos form during plant… 
Signaling in plant embryogenesis.
  • J. Harada
  • Biology
    Current opinion in plant biology
  • 1999
Role of Arabidopsis LEAFY COTYLEDON genes in seed development
Evidence is discussed which suggests that the LEAFY COTYLEDON genes coordinate the morphogenesis and maturation phases and confer embryogenic competence to cells.
Genetic activity during early plant embryogenesis
This work briefly reviews some of the transcription factors involved in establishing primary and apical meristems during zygotic embryogenesis, as well as TFs necessary and/or sufficient to drive somatic embryo programs.
Embryogenesis in Dicotyledonous Plants
Analysis of mutations altering cellular patterns in Arabidopsis embryo indicate that cell-cell interactions most likely take place to establish cell and tissue layers, and there is evidence for inter-regional interactions to coordinate the overall development of the dicot embryo.
Developmental and genomic architecture of plant embryogenesis: from model plant to crops
The maternal-to-zygotic transition in higher plants.
It is hypothesize that the MZT occurs before zygotic cell division and that the development of the fertilized egg cell in flowering plants can be divided into two phases: the zygote stage, which is mainly controlled maternally, and the one-celled proembryo stage, in which zygosis activation (ZGA) occurs and is required for zygotes division.
CHAPTER 3 – Embryogenesis
Application of Somatic Embryogenesis in Woody Plants.
This review focuses on molecular mechanisms of somatic embryogenesis and its practical applications in economic woody plants and proposes a strategy to improve the process of somatics embryogenesis using molecular means.
La régulation génique chez Solanum chacoense : de la pollinisation jusqu’à l’embryogenèse
It was found that the signal received by the ovary was different and depended on several factors including the pollen source and the distance traveled by the pollen in the style, which showed that the genetic programs of pollination overlap with those of stress.


Embryogenesis in Higher Plants: An Overview.
The events that occur during embryonic development establish the organization of the plant body and prepare the embryo for both dormancy and germination, focusing primarily on dicotyledonous plants.
Gene expression during plant embryogenesis and germination: an overview.
  • T. Thomas
  • Environmental Science
    The Plant cell
  • 1993
This review will provide an eclectic overview of gene expression in angiosperm embryogenesis and germination, focusing primarily on dicot plants and addressing only a small number of the more than 3 x 104 different genes expressed in embryos and seedlings.
Molecular Mechanisms of Pollen Tube Growth and Differentiation.
The early part of the life of the male gametophyte occurs within the sporophytic tissues of the anther, and a number of critical developmental events occur that are preceded or accompanied by the induction of activity of a large number of genes.
Somatic Embryogenesis: A Model for Early Development in Higher Plants.
The use of somatic embryogenesis as a model system for understanding the regulation of gene expression required for the earliest developmental events in the life of a higher plant: the development of the fertilized zygote into a mature embryo is focused on.
Transcriptional activities in dry seed nuclei indicate the timing of the transition from embryogeny to germination.
  • L. ComaiJ. Harada
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1990
Analysis of the specific transcripts produced in dry seed nuclei indicates that the changes in gene expression patterns associated with germination are not initiated during late embryogeny, and suggests that the transition from an embryonic to a postgerminative program of development occurs after seeds are rehydrated.
Embryogenesis: a Question of Pattern
Embryogenesis in plants appears superficially to be a relatively simple process in terms of morphological development and it is the case that most organogenesis takes place in the post-embryonic
Perspectives on Genetic Analysis of Plant Embryogenesis.
The purpose of this review will be to explore the potential benefits and limitations of mutant analysis in relation to plant embryo development.
In Vitro Fertilization with Isolated, Single Gametes Results in Zygotic Embryogenesis and Fertile Maize Plants.
We demonstrate here the possibility of regenerating phenotypically normal, fertile maize plants via in vitro fertilization of isolated, single sperm and egg cells mediated by electrofusion. The
Plants: novel developmental processes.
Advances in Sophisticated gene transfer procedures, transposon mutagenesis in homologous and heterologous plants, and development of model organisms such as Arabidopsis make it possible to dissect the molecular and cellular events responsible for controlling plant-specific processes.