Reprint

Molecular Basis of Apomixis in Plants

Edited by
August 2021
300 pages
  • ISBN978-3-0365-1508-3 (Hardback)
  • ISBN978-3-0365-1507-6 (PDF)

This is a Reprint of the Special Issue Molecular Basis of Apomixis in Plants that was published in

Biology & Life Sciences
Summary

Apomixis is the consequence of a concerted mechanism that harnesses the sexual machinery and coordinates developmental steps in the ovule to produce an asexual (clonal) seed. Altered sexual developments involve widely characterized functional and anatomical changes in meiosis, gametogenesis, and embryo and endosperm formation. The ovules of apomictic plants skip meiosis and form unreduced female gametophytes whose egg cells develop into a parthenogenetic embryo, and the central cells may or may not fuse to a sperm to develop the seed endosperm. Thus, functional apomixis involves at least three components, apomeiosis, parthenogenesis, and endosperm development, modified from sexual reproduction that must be coordinated at the molecular level to progress through the developmental steps and form a clonal seed.

Despite recent progress uncovering specific genes related to apomixis-like phenotypes and the formation of clonal seeds, the molecular basis and regulatorynetwork of apomixis is still unknown. This is a central problem underlying the current limitations of apomixis breeding.

This book collates twelve publications addressing different topics around the molecular basis of apomixis, illustrating recent discoveries and advances toward understanding the genetic regulation of the trait, discussing the possible origins of apomixis and the remaining challenges for its commercial deployment in plants.

Format
  • Hardback
License and Copyright
© 2022 by the authors; CC BY-NC-ND license
Keywords
apomixis; evolution; germline; gene regulation; sporogenesis; plant reproduction; ribosome; RNA helicase; sexual development; stress response; apomeiosis; clonal seeds; endosperm; heterosis capture; molecular breeding; parthenogenesis; apomixis; differentially expressed genes; hybridization; microarrays; polyploidy; Ranunculus; sexuality; apomeiosis; character segregation; crop biotechnology; heterosis; meiosis; molecular breeding; recombination; agamospermy; basal angiosperms (ANA-grade); sporocyteless; polycomb-group proteins; reproductive systems; apomixis evolution; apomixis; APOSTART; plant reproduction; Poa pratensis; apomixis; diplospory; parthenogenesis; autonomous endosperm; genetics; Taraxacum; dandelion; weeping lovegrass; apomixis; drought stress; RNA-seq; differentially expressed genes; sexuality; agamospermy; plant breeding; plant development; plant reproduction; Hieracium piloselloides; apomixis; CRISPR/Cas9; PHYTOENE DESATURASE (PDS); amplicon sequencing; genome editing; tissue culture; apomixis; parthenogenesis; haploid progeny; dicotyledon; PsASGR-BBML; pseudogamy; 5-azacytidine; abscisic acid; apomixis; apospory; diplospory; expression profiling; fluridone; metabolic homeostasis; oxidative stress; sucrose non-fermenting-related protein kinase; n/a

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