Gametic Embryogenesis
A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Development and Morphogenesis".
Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3964
Special Issue Editors
Interests: gametic embryogenesis; microspore embryogenesis; gynogenesis; cell totipotency; plant regeneration; chromosome doubling; doubled haploid; somatic embryogenesis; plant breeding
Interests: doubled haploid technology; totipotency; dedifferentiation; developmental reprograming; epigenetics; microspore embryogenesis molecular markers
Special Issue Information
Dear Colleagues,
Systems based on the modification of the development program of cells or organs offer an enormous potential in plant biotechnology, and provide valuable materials for plant breeding. One of the most fascinating is gametic embryogenesis. In this process, gamete precursor cells (microspores or young bicellular pollen and ovule) are able to modify their developmental fate and adopt an embryogenic pathway in response or not to a stress treatment. Anthers, isolated microspores, ovules, ovaries, or complete flowers are cultured in vitro, resulting in multicellular structures that differentiate into embryos and finally regenerate haploid or doubled haploid (DH) plants. The value of DH plants in plant breeding programmes is unquestionable, since complete homozygosis is obtained in one generation. Furthermore, the use of a DH population increases the phenotypic selection efficiency, shortening the time required for the release of new varieties or inbred lines to 4–6 years.
In recent years, increased knowledge of the mechanisms that trigger gametic embryogenesis has revealed the existence of networks involving epigenetic, growth regulators, structural, metabolic, and autophagic factors, among others. Based on these findings, alternative strategies to conventional stress treatments have emerged for gametic embryogenesis induction, allowing the establishment of more efficient protocols. However, many questions remain to be resolved regarding the mechanisms of development pattern shift, the determinants of the embryo fate, or the diverse response of species and cultivars.
In this Special Issue, reviews and original research articles that propose innovative strategies in gametic embryogenesis protocols or that shed light on the molecular mechanisms involved are welcome.
Dr. Ana Castillo
Dr. María-Pilar Vallés
Guest Editors
Manuscript Submission Information
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Keywords
- gametic embryogenesis
- microspore embryogenesis
- gynogenesis
- cell totipotency
- cellular reprogramming
- plant regeneration
- doubled haploid
- “omics” tools
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