EVOLUTIONARY RATES AND SPECIES DIVERSITY IN FLOWERING PLANTS

Abstract Genetic change is a necessary component of speciation, but the relationship between rates of speciation and molecular evolution remains unclear. We use recent phylogenetic data to demonstrate a positive relationship between species numbers and the rate of neutral molecular evolution in flowering plants (in both plastid and nuclear genes). Rates of protein and morphological evolution also correlate with the neutral substitution rate, but not with species numbers. Our findings reveal a link between the rate of neutral molecular change within populations and the evolution of species diversity. Corresponding Editor: D. Baum

[1]  V. Savolainen,et al.  Rate of gene sequence evolution and species diversification in flowering plants: a re–evaluation , 1998, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[2]  E. Kellogg,et al.  The structure and function of RuBisCO and their implications for systematic studies. , 1997, American journal of botany.

[3]  Gilean McVean,et al.  A population genetic model for the evolution of synonymous codon usage: patterns and predictions , 1999 .

[4]  M T Clegg,et al.  Rates and patterns of chloroplast DNA evolution. , 1994, Proceedings of the National Academy of Sciences of the United States of America.

[5]  M. Sanderson.  ESTIMATING RATES OF SPECIATION AND EVOLUTION: A BIAS DUE TO HOMOPLASY , 1990 .

[6]  H. A. Orr,et al.  The population genetics of speciation: the evolution of hybrid incompatibilities. , 1995, Genetics.

[7]  Dan Graur,et al.  Speciational Evolution: a Phylogenetic Test With Allozymes in Sceloporus (Reptilia) , 1989, Cladistics : the international journal of the Willi Hennig Society.

[8]  Mark W. Chase,et al.  The earliest angiosperms: evidence from mitochondrial, plastid and nuclear genomes , 1999, Nature.

[9]  D. Soltis,et al.  Molecular Evolution of 18S rDNA in Angiosperms: Implications for Character Weighting in Phylogenetic Analysis , 1998 .

[10]  E. Martins.  The Comparative Method in Evolutionary Biology, Paul H. Harvey, Mark D. Pagel. Oxford University Press, Oxford (1991), vii, + 239 Price $24.95 paperback , 1992 .

[11]  J H Gillespie,et al.  The role of population size in molecular evolution. , 1999, Theoretical population biology.

[12]  G. A. Horridge,et al.  Animal species and evolution. , 1964 .

[13]  G. Williams,et al.  Natural selection : domains, levels, and challenges. , 1994 .

[14]  M. Dallwitz,et al.  The families of angiosperms: Automated descriptions, with interactive identification and information retrieval , 1991 .

[15]  L Nagel,et al.  Natural selection and parallel speciation in sympatric sticklebacks. , 2000, Science.

[16]  W. M. Whitten,et al.  Phylogeny of the eudicots : a nearly complete familial analysis based on rbcL gene sequences , 2000 .

[17]  Jerry A. Coyne,et al.  Genetics and speciation , 1992, Nature.

[18]  M T Clegg,et al.  The evolution of plant nuclear genes. , 1997, Proceedings of the National Academy of Sciences of the United States of America.

[19]  A. Hastings,et al.  Founder Effect Speciation: A Theoretical Reassessment , 1996, The American Naturalist.

[20]  J. Coyne.  ERNST MAYR AND THE ORIGIN OF SPECIES , 1994, Evolution; international journal of organic evolution.

[21]  P. Harvey,et al.  Rate of rbcL gene sequence evolution and species diversification in flowering plants (angiosperms) , 1996, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[22]  D. Soltis,et al.  Angiosperm phylogeny inferred from multiple genes as a tool for comparative biology , 1999, Nature.

[23]  M. J. Dallwitz,et al.  The Families of Flowering Plants: Descriptions, Illustrations, Identification and Information Retrieval , 1992 .

[24]  H. A. Orr,et al.  The evolutionary genetics of speciation. , 1998, Philosophical transactions of the Royal Society of London. Series B, Biological sciences.

[25]  A. Templeton.  EXPERIMENTAL EVIDENCE FOR THE GENETIC‐TRANSILIENCE MODEL OF SPECIATION , 1996, Evolution; international journal of organic evolution.

[26]  James F. Smith.  Phylogenetics of seed plants : An analysis of nucleotide sequences from the plastid gene rbcL , 1993 .

[27]  W. Kress,et al.  Angiosperm phylogeny inferred from 18S rDNA, rbcL, and atpB sequences , 2000 .

[28]  K. E. Omland.  CORRELATED RATES OF MOLECULAR AND MORPHOLOGICAL EVOLUTION , 1997, Evolution; international journal of organic evolution.

[29]  M T Clegg,et al.  Substitution rate comparisons between grasses and palms: synonymous rate differences at the nuclear gene Adh parallel rate differences at the plastid gene rbcL. , 1996, Proceedings of the National Academy of Sciences of the United States of America.

[30]  M. Orr,et al.  Ecology and speciation. , 1998, Trends in ecology & evolution.

[31]  Elizabeth A. Kellogg,et al.  An ordinal classification for the families of flowering plants , 1998 .

[32]  D. Maddison,et al.  MacClade 4: analysis of phy-logeny and character evolution , 2003 .

[33]  M. Badger,et al.  Comparisons of rbcL genes for the large subunit of ribulose-bisphosphate carboxylase from closely related C3 and C4 plant species. , 1990, The Journal of biological chemistry.

[34]  R. Harrison.  Molecular Changes at Speciation , 1991 .

[35]  A. Templeton,et al.  Genetic Revolutions in Relation to Speciation Phenomena: The Founding of New Populations , 1984 .