Somatic Mutation and Evolution in Plants (CROSBI ID 303186)
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Podaci o odgovornosti
Schoen, Daniel J. ; Schultz, Stewart T.
engleski
Somatic Mutation and Evolution in Plants
Somatic mutations are common in plants, and they may accumulate and be passed on to gametes. The determinants of somatic mutation accumulation include the intraorganismal selective effect of mutations, the number of cell divisions that separate the zygote from the formation of gametes, and shoot apical meristem structure and branching. Somatic mutations can promote the evolution of diploidy, polyploidy, sexual recombination, outcrossing, clonality, and separate sexes, and they may contribute genetic variability in many other traits. The amplification of beneficial mutations via intraorganismal selection may relax selection to reduce the genomic mutation rate or to protect the germline in plants. The total rate of somatic mutation, the distribution of selective effects and fates in the plant body, and the degree to which the germline is sheltered from somatic mutations are still poorly understood. Our knowledge can be improved through empirical estimates of mutation rates and effects on cell lineages and whole organisms, such as estimates of the reduction in fitness of progeny produced by within-versus between-flower crosses on the same plant, mutation coalescent studies within the canopy, and incorporation of somatic mutation into theoretical models of plant evolutionary genetics.
cell depth ; intraorganismal selection ; genomic mutation ; life history ; mating system ; genetic variation
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Podaci o izdanju
50
2019.
49-73
objavljeno
1543-592X
10.1146/annurev-ecolsys-110218-024955
Povezanost rada
nije evidentirano