Molecular mechanisms of polyploidy and hybrid vigor
By Z. J. Chen. Trends in Plant Science, 2010
596 citations recorded by the source corpus.
Hybrids such as maize (Zea mays) or domestic dog (Canis lupus familiaris) grow bigger and stronger than their parents. This is also true for allopolyploids such as wheat (Triticum spp.) or frog (i.e. Xenopus and Silurana) that contain two or more sets of chromosomes from different species. The phenomenon, known as hybrid vigor or heterosis, was systematically characterized by Charles Darwin (1876). The rediscovery of heterosis in maize a century ago has revolutionized plant and animal breeding and production. Although genetic models for heterosis have been rigorously tested, the molecular bases remain elusive. Recent studies have determined the roles of nonadditive gene expression, small RNAs, and epigenetic regulation, including circadian-mediated metabolic pathways, in hybrid vigor and incompatibility, which could lead to better use and exploitation of the increased biomass and yield in hybrids and allopolyploids for food, feed, and biofuels.
Subfields: Genetics, Plant Science
View Paper: https://www.semanticscholar.org/paper/17aebca6aced05a0c6c017e48ec7c5dbae543fb1
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In Genetics
In Plant Science
- D. Richardson
- Petr Pyšek
- J. L. Le Roux
- M. te Beest
- Shawn M. Kaeppler
- Magdalena Kubešová
- J. Suda
- V. Jarošı́k
Citations in the corpus
- The more the better? The role of polyploidy in facilitating plant invasions. (2012, background): “Mechanisms involved in auto- and allopolyploidization have been thoroughly covered in several recent reviews (e.g. Osborn et al., 2003; Adams and Wendel, 2005b; Brysting et al., 2007; Hegarty and Hiscock, 2007; Chen, 2010; Parisod et al., 2010).”
- Heterosis: Many Genes, Many Mechanisms—End the Search for an Undiscovered Unifying Theory (2012, background): “Heterosis can also be captured and fixed through the process of polyploidization which is common in the plant kingdom (reviewed in [13, 14, 20]).”