Key Points
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Animal genome projects have sampled the animal kingdom from simple to complex organisms, whereas plant genome projects have concentrated on angiosperms. More comparative genomic information is needed before basic questions of plant evolution can be answered.
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Plants have several unique features not found in animals, such as alternation of generations, no separation between soma and germ line, and endosperm formation controlled by imprinted and imprinting genes.
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Several key transitions have occurred in plant evolution. The colonization of the land — the most important transition — was associated with several morphological innovations such as the stomata and the cuticle, increased morphological complexity and a KNOX (knotted-like homeobox) gene duplication.
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The leaf has evolved many times. In seed plants, this has involved a collective of five genetic network innovations, in which KNOX genes, ASYMMETRIC LEAVES1 (a MYB transcription factor), PHANTASTICAB and REVOLUTA (both homeodomain-zip genes) are all implicated.
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A characteristic plant class of MADS-box gene, the so-called MADS-IKC gene family, has diversified and this diversity has been recruited to specify identity in floral organs (the ABC model and its variants).
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Bilateral (as opposed to radial) symmetry in flowers is a key innovation that promotes pollinator specialization. The gene CYCLOIDEA, which is asymmetrically expressed (on the adaxial side of the flower), is a key component of this phenomenon.
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Selection on natural variation in cis-regulatory regions of transcriptional regulators might constitute an important driver of plant evolution. This mechanism has certainly been important in the evolution of cultivated maize from its domesticated ancestors.
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Evolution of natural variation in flowering time in Arabidopsis shows how a single mutation (at the FRIGIDA locus) can have a profound effect on the ecology of a plant, shifting it from one adaptive peak to another.
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Gene duplications are prevalent in plants and might lead to evolutionary innovation. The recent CYCLOIDEA/DICHOTOMA duplication in Antirrhinum contributes to the patterning of the specialized top petals of Antirrhinum. Some duplicate genes are apparently redundant, such as the SHATTERPROOF genes of Arabidopsis, but it is likely that very subtle divergence of function will be found between them.
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New genomic tools will aid understanding of the evolution of gene networks. This will allow us to integrate the environment, the genotype and the phenotype into a post-genomic synthesis of plant evolution.
Abstract
Large-scale gene-sequencing projects that have been undertaken in animals have involved organisms from contrasting taxonomic groups, such as worm, fly and mammal. By contrast, similar botanical projects have focused exclusively on flowering plants. This has made it difficult to carry out fundamental research on how plants have evolved from simple to complex forms — a task that has been very successful in animals. However, in the flowering plants, the many completely or partially sequenced genomes now becoming available will provide a powerful tool to investigate the details of evolution in one group of related organisms.
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References
The Arabidopsis Genome Initiative. Analysis of the genome sequence of the flowering plant Arabidopsis thaliana. Nature 408, 796–815 (2000).
Bowe, L. M., Coat, G. & dePamphilis, C. W. Phylogeny of seed plants based on all three genomic compartments: extant gymnosperms are monophyletic and Gnetales' closest relatives are conifers. Proc. Natl Acad. Sci. USA 97, 4092–4097 (2000).
Soltis, P. S., Soltis, D. E. & Chase, M. W. Angiosperm phylogeny inferred from multiple genes as a tool for comparative biology. Nature 402, 402–404 (1999).One of several recent papers that have revolutionized our understanding of angiosperm phylogeny, and that have allowed ideas of gene evolution and functional evolution to be tested in an accurate phylogenetic context.
Becker, A. et al. MADS-box gene diversity in seed plants 300 million years ago. Mol. Biol. Evol. 17, 1425–1434 (2000).
Bharathan, G., Janssen, B. J., Kellogg, E. A. & Sinha, N. Phylogenetic relationships and evolution of the KNOTTED class of plant homeodomain proteins. Mol. Biol. Evol. 16, 553–563 (1999).
Reiser, L., Sanchez-Baracaldo, P. & Hake, S. Knots in the family tree: evolutionary relationships and functions of knox homeobox genes. Plant Mol. Biol. 42, 151–166 (2000).
Graham, L. K. E. & Wilcox, L. W. The origin of alternation of generations in land plants: a focus on matrotrophy and hexose transport. Phil. Trans. R. Soc. Lond. B 55, 757–766 (2000).
Spillane, C. et al. Interaction of the Arabidopsis polycomb group proteins FIE and MEA mediates their common phenotypes. Curr. Biol. 10, 1535–1538 (2000).
Yadegari, R. et al. Mutations in the FIE and MEA genes that encode interacting polycomb proteins cause parent-of-origin effects on seed development by distinct mechanisms. Plant Cell 12, 2367–2381 (2000).
Luo, M., Bilodeau, P., Dennis, E. S., Peacock, W. J. & Chaudhury, A. Expression and parent-of-origin effects for FIS2, MEA, and FIE in the endosperm and embryo of developing Arabidopsis seeds. Proc. Natl Acad. Sci. USA 97, 10637–10642 (2000).
Waites, R. & Hudson, A. Phantastica — a gene required for dorsoventrality of leaves in Antirrhinum majus. Development 121, 2143–2154 (1995).
Waites, R., Selvadurai, H. R., Oliver, I. R. & Hudson, A. The PHANTASTICA gene encodes a MYB transcription factor involved in growth and dorsoventrality of lateral organs in Antirrhinum. Cell 93, 779–789 (1998).
Timmermans, M. C. et al. ROUGH SHEATH2: a Myb protein that represses knox homeobox genes in maize lateral organ primordia. Science 284, 151–153 (1999).
Tsiantis, M., Schneeberger, R., Golz, J. F., Freeling, M. & Langdale, J. A. The maize rough sheath2 gene and leaf development programs in monocot and dicot plants. Science 284, 154–156 (1999).
Schneeberger, R., Tsiantis, M., Freeling, M. & Langdale, J. A. The rough sheath2 gene negatively regulates homeobox gene expression during maize leaf development. Development 125, 2857–2865 (1998).
Byrne, M. E. et al. Asymmetric leaves1 mediates leaf patterning and stem cell function in Arabidopsis. Nature 408, 967–971 (2000).
Kerstetter, R. A., Bollman, K., Taylor, R. A., Bomblies, K. & Poethig, R. S. KANADI regulates organ polarity in Arabidopsis. Nature 411, 706–709 (2001).
McConnell, J. R. et al. Role of PHABULOSA and PHAVOLUTA in determining radial patterning in shoots. Nature 411, 709–713 (2001).Shows that the gene PHABULOSA (PHB ) is important in specifying adaxial identity — a key innovation in leaf evolution. A sterol/lipid-binding domain in the PHB protein acts as a receptor for an unknown adaxializing signal, which leads to the protein being actively transcribed only in the adaxial domain.
Bateman, R. M. & Dimichele, W. A. Heterospory — the most iterative key innovation in the evolutionary history of the plant kingdom. Biol. Rev. Cambr. Phil. Soc. 69, 345–417 (1994).
Kramer, E. M. & Irish, V. F. Evolution of the petal and stamen developmental programs: evidence from comparative studies of the lower eudicots and basal angiosperms. Int. J. Plant Sci. 161, S29–S40 (2000).
Kramer, E. M. & Irish, V. F. Evolution of genetic mechanisms controlling petal development. Nature 399, 144–148 (1999).Examines the conservation of the ABC model of floral development from the model organisms Arabidopsis and Antirrhinum to the basal eudicots. The authors find that some aspects of the ABC model are conserved, whereas others are not.
Ambrose, B. A. et al. Molecular and genetic analyses of the silky1 gene reveal conservation in floral organ specification between eudicots and monocots. Mol. Cell 5, 569–579 (2000).
Yu, D. et al. Organ identity genes and modified patterns of flower development in Gerbera hybrida (Asteraceae). Plant J. 17, 51–62 (1999).
Xue, Y. B., Carpenter, R., Dickinson, H. G. & Coen, E. S. Origin of allelic diversity in Antirrhinum S locus RNases. Plant Cell 10, 805–814 (1996).
Cronk, Q. C. B. & Möller, M. Genetics of floral symmetry revealed. Trends Ecol. Evol. 12, 85–86 (1997).
Luo, D., Carpenter, R., Copsey, L., Vincent, C., Clark, J. & Coen, E. Control of organ asymmetry in flowers of Antirrhinum. Cell 99, 367–376 (1999).Shows how the closely related genes CYCLOIDEA (CYC ) and DICHOTOMA together control the unique features of the adaxial side of the snapdragon flower. CYC knockout mutants abaxialize the flower, whereas a gain-of-function CYC mutation, BACKPETALS, which affects the cis -regulation of the gene, results in an adaxialized flower.
Luo, D., Carpenter, R., Vincent, C., Copsey, L. & Coen, E. Origin of floral asymmetry in Antirrhinum. Nature 383, 794–799 (1996).
Cubas, P., Lauter, N., Doebley, J. & Coen, E. The TCP domain: a motif found in proteins regulating plant growth and development. Plant J. 18, 215–222 (1999).
Gaudin, V. et al. The expression of D-cyclin genes defines distinct developmental zones in snapdragon apical meristems and is locally regulated by the cycloidea gene. Plant Physiol. 122, 1137–1148 (2000).
Cubas, P., Vincent, C. & Coen, E. An epigenetic mutation responsible for natural variation in floral symmetry. Nature 401, 157–161 (1999).Shows that the phenotype of the classic peloria mutation, studied by Linnaeus, is due to a loss-of-function of the Linaria CYCLOIDEA homologue and subsequent abaxialization of the flower. The mutation is not attributable to a sequence change, but to a heritable change in the methylation status of the gene.
Cubas, P., Coen, E. & Martínez–Zapater, J. M. Ancient asymmetries in the evolution of flowers. Curr. Biol. 11, 1050–1052 (2001).
Stern, D. L. A role of Ultrabithorax in morphological differences between Drosophila species. Nature 396, 463–466 (1999).
Sucena, E. & Stern, D. L. Divergence of larval morphology between Drosophila sechellia and its sibling species caused by cis-regulatory evolution of ovo/shaven-baby. Proc. Natl Acad. Sci. USA 97, 4530–4534 (2000).
Wang, R.-L., Stec, A., Hey, J., Lukens, L. & Doebley, J. The limits of selection during maize domestication. Nature 398, 236–239 (1999).Shows that, in the evolution of maize from its wild ancestor (teosinte) by selection under cultivation, very strong selection has been applied to the cis -regulatory regions of the TEOSINTE BRANCHED1 gene.
Carroll, S. B. Developmental regulatory mechanisms in the evolution of insect diversity. Development 21, S7–S223 (1994).
Doebley, J. & Lukens, L. Transcriptional regulation and the evolution of plant form. Plant Cell 10, 1075–1082 (1998).
Doebley, J., Stec, A. & Hubbard, L. The evolution of apical dominance in maize. Nature 386, 485–488 (1997).
Bateman, R. M. & DiMichele, W. A. in Shape and Form in Plants and Fungi (eds Ingram, D. S. & Hudson, A.) 63–102 (Academic, London, 1994).
Bateman, R. M. et al. Early evolution of land plants: phylogeny, physiology, and ecology of the primary terrestrial radiation. Annu. Rev. Ecol. Syst. 29, 263–292 (1998).
DiMichele, W. A. & Bateman, R. M. Plant paleoecology and evolutionary inference: two examples from the Paleozoic. Rev. Palaeobot. Palynol. 90, 223–247 (1996).
Tucker, S. C. The ontogenetic basis for missing petals in Crudia (Leguminosae: Caesalpinioideae: Detarieae). Int. J. Plant Sci. 162, 83–89 (2001).
Johanson, U. et al. Molecular analysis of FRIGIDA, a major determinant of natural variation in Arabidopsis flowering time. Science 290, 344–347 (2000).A pioneer paper that shows the molecular basis of naturally occurring, putatively adaptive variation — in this case, flowering time. The authors show how populations with a different flowering time result from a deletion at the FRIGIDA locus.
Gaut, B. & Doebley, J. DNA sequence evidence for the segmental allotetraploid origin of maize. Proc. Natl Acad. Sci. USA 94, 6809–6814 (1997).
Gaut, B. S. Patterns of chromosomal duplication in maize and their implications for comparative maps of the grasses. Genome Res. 11, 55–66 (2001).
Vision, T. J., Brown, D. G. & Tanksley, S. D. The origins of genomic duplications in Arabidopsis. Science 290, 2114–2117 (2000).
Venter, J. C. et al. The sequence of the human genome. Science 291, 1304–1351 (2001).
Wolfe, K. H. Yesterday's polyploids and the mystery of diploidization. Nature Rev. Genet. 2, 333–341 (2001).
Serikawa, K. A. & Mandoli, D. F. Aaknox1, a kn1-like homeobox gene in Acetabularia acetabulum, undergoes developmentally regulated subcellular localization. Plant Mol. Biol. 41, 785–793 (1999).
Champagne, C. E. M. & Ashton, N. W. Ancestry of plant KNOX genes revealed by bryophyte (Physcomitrella patens) homologs. New Phytol. 150, 23–36 (2001).Shows that the fundamental duplication of KNOX (knotted homeobox) genes into two classes is characteristic of all land plants but not of an alga, indicating that this duplication might have been a key step in the evolution of land flora.
Citerne, H. L., Möller, M. & Cronk, Q. C. B. Diversity of cycloidea-like genes in Gesneriaceae in relation to floral symmetry. Ann. Bot. 86, 167–176 (2000).
Zhang, P. F., Chopra, S. & Peterson, T. A. Segmental gene duplication generated differentially expressed myb-homologous genes in maize. Plant Cell 12, 2311–2322 (2000).
Liljegren, S. J. et al. SHATTERPROOF MADS-box genes control seed dispersal in Arabidopsis. Nature 404, 766–770 (2000).
Shimeld, S. M. Gene function, gene networks and the fate of duplicated genes. Semin. Cell. Dev. Biol. 10, 549–553 (1999).
Coen, E. S. et al. Floricaula — a homeotic gene required for flower development in Antirrhinum majus. Cell 63, 1311–1322 (1990).
Rottmann, W. H. et al. Diverse effects of overexpression of LEAFY and PTLF, a poplar (Populus) homolog of LEAFY/FLORICAULA, in transgenic poplar and Arabidopsis. Plant J. 22, 235–245 (2000).
Shu, G. P. et al. LEAFY and the evolution of rosette flowering in violet cress (Jonopsidium acaule, Brassicaceae). Am. J. Bot. 87, 634–641 (2000).
Mouradov, A. et al. Molecular control of early cone development in Pinus radiata. Protoplasma 208, 3–12 (1999).
Frohlich, M. W. & Parker, D. S. The mostly male theory of flower evolutionary origins: from genes to fossils. Syst. Bot. 25, 155–170 (2000).Significant as the first paper to put forward a potentially testable molecular hypothesis for the origin of the hermaphrodite angiosperm flower from unisexual gymnosperm reproductive structures. This might have occurred by integrating male and female cone development genes under the control of a single angiosperm gene called LEAFY.
Blazquez, M. A. & Weigel, D. Integration of floral inductive signals in Arabidopsis. Nature 404, 889–892 (2000).Shows how the giberellin pathway and the photoperiod pathway (both of which can induce flowering) integrate on separate cis -regulatory elements of the same downstream target gene: LEAFY , a gene that promotes the transition from vegetative to floral meristems.
Smith, N. A. et al. Total silencing by intron-spliced hairpin RNAs. Nature 407, 319–320 (2000).
Schaefer, D. G. Gene targeting in Physcomitrella patens. Curr. Opin. Plant Biol. 4, 143–150 (2001).
Wood, A. J., Oliver, M. J. & Cove, D. J. Bryophytes as model systems. Bryologist 103, 128–133 (2000).
Reski, R. Molecular genetics of Physcomitrella. Planta 208, 301–309 (1999).
Hofmann, A. H. et al. A specific member of the Cab multigene family can be efficiently targeted and disrupted in the moss Physcomitrella patens. Mol. Gen. Genet. 261, 92–99 (1999).
Trieu, A. T. et al. Transformation of Medicago truncatula via infiltration of seedlings or flowering plants with Agrobacterium. Plant J. 22, 531–541 (2000).
Weigel, D. et al. Activation tagging in Arabidopsis. Plant Physiol. 122, 1003–1013 (2000).
Purugganan, M. D. The molecular population genetics of regulatory genes. Mol. Ecol. 9, 1451–1461 (2000).
Purugganan, M. D., Boyles, A. L. & Suddith, J. I. Variation and selection at the CAULIFLOWER floral homeotic gene accompanying the evolution of domesticated Brassica oleracea. Genetics 155, 855–862 (2000).
Purugganan, M. & Suddith, J. Molecular population genetics of the Arabidopsis cauliflower regulatory gene; non-neutral evolution and naturally occurring variation in floral homeotic function. Proc. Natl Acad. Sci. USA 95, 8130–8134 (1998).
Lukens, L. & Doebley, J. Molecular evolution of the teosinte branched gene among maize and related grasses. Mol. Biol. Evol. 18, 627–638 (2001).
Yang, Z. & Nielsen, R. Synonymous and nonsynonymous rate variation in nuclear genes of mammals. J. Mol. Evol. 46, 409–418 (1998).
Sutton, K. & Wilkinson, M. Rapid evolution of a homeodomain: evidence for positive selection. J. Mol. Evol. 45, 579–588 (1997).
Nei, M. & Gojobori, T. Simple methods for estimating the numbers of synonymous and non-symonymous nucleotide substitutions. Mol. Biol. Evol. 3, 418–426 (1986).
Hudson, R. R., Kreitman, M. & Aguadé, M. A test of neutral molecular evolution based on nucleotide data. Genetics 116, 153–159 (1987).
Rozas, J. & Rozas, R. DnaSP version 3: an integrated program for molecular population genetics and molecular evolution analysis. Bioinformatics 15, 174–175 (1999).
Chuzhanova, N. A., Krawczak, M., Nemytikova, L. A., Gusev, V. D. & Cooper, D. N. Promoter shuffling has occurred during the evolution of the vertebrate growth hormone gene. Gene 254, 1–2 (2000).
Lemieux, C., Otis, C. & Turmel, M. Ancestral chloroplast genome in Mesostigma viride reveals an early branch of green plant evolution. Nature 403, 649–652 (2000).
Qiu, Y. L. & Lee, J. Transition to a land flora: a molecular phylogenetic perspective. J. Phycol. 36, 799–802 (2000).
Qiu, Y. L., Cho, Y., Cox, C. J. & Palmer, J. D. The gain of three mitochondrial introns identifies liverworts as the earliest land plants. Nature 394, 671–674 (1998).
Nickrent, D. L., Parkinson, C. L., Palmer, J. D. & Duff, R. J. Multigene phylogeny of land plants with special reference to bryophytes and the earliest land plants. Mol. Biol. Evol. 17, 1885–1895 (2000).
Pryer, K. M. et al. Horsetails and ferns are a monophyletic group and the closest living relatives to seed plants. Nature 409, 618–622 (2001).
Qiu, Y. L. et al. The earliest angiosperms: evidence from mitochondrial, plastid and nuclear genomes. Nature 402, 404–407 (1999).
Soltis, P. S., Soltis, D. E. & Chase, M. W. Angiosperm phylogeny inferred from multiple genes as a tool for comparative biology. Nature 402, 402–404 (1999).
Barkman, T. J. et al. Independent and combined analyses of sequences from all three genomic compartments converge on the root of flowering plant phylogeny. Proc. Natl Acad. Sci. USA 97, 13166–13171 (2000).
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I thank R. Bateman and two anonymous referees for constructive comments on the manuscript.
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Glossary
- BRYOPHYTE
-
Land plants in which the gametophyte generation is the larger, persistent phase. Bryophytes include the Hepaticophyta (liverworts), Anthocerotophyta (hornworts) and Bryophyta (mosses).
- GAMETOPHYTE
-
The plant generation that has a haploid set of chromosomes and produces gametes.
- SPOROPHYTE
-
The multicellular diploid form (in plants that undergo alternation of generations). The sporophyte results from a union of haploid gametes and meiotically produces haploid spores that grow into the gametophyte generation.
- APOPLASTIC
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Pertaining to the free space of tissue; specifically the cell wall porosity and intercellular spaces.
- THALLUS
-
A cellular expansion that forms the main body of thalloid plants, such as algae and liverworts. Thalloid plants have no roots, stems or leaves, and include liverworts, hornworts and pteridophyte gametophytes.
- STOMATA
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Openings in the epidermis of a plant that permit gaseous exchange with the air. In general, all land plants except liverworts have stomata in their sporophyte stage.
- MONOPODIAL
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Growing continuously from a single growing point (meristem).
- MERISTEM
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A collection of stem cells in plants — undifferentiated but determined tissue, the cells of which are capable of active cell division and subsequent differentiation into specialized and permanent tissue, such as shoots and roots.
- HETEROSPORY
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The condition of producing two types of spore of different sizes: megaspores (female) and microspores (male).
- LIGULE
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An appendage on the upper side of a grass leaf at the point where the sheath joins the blade.
- SPOROPHYLL
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A leaf-like organ bearing sporangia (containing spores). The sporophyll and sporangia together form the basic reproductive unit of the sporophyte generation of land plants. Ovules of seed plants are derived from sporophylls and other organs, whereas the filament of the angiosperm stamens is a sporophyll.
- CARPEL
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The female reproductive organ of a flower.
- STAMEN
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The male organ of the angiosperm flower.
- SPHENOPSIDS
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A group of pteridophytes called horsetails, now represented by the extant genus Equisetum, but formerly much more diverse with many extinct woody forms. Pteridophytes comprise vascular plants in which both the gametophyte and sporophyte are free living. Other members of the group include the extant lycophytes and ferns, and many extinct groups, such as trimerophytes.
- INDETERMINATE GROWTH
-
Continuation of the developmental history of an organism or organ when it reaches its adult form. This is characteristic of higher plants. By contrast, determinate growth describes the cessation of the developmental history of an organism or organ when it reaches its adult form. This is characteristic of higher animals.
- PHENOLOGY
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The timing of periodic biological phenomena that are usually correlated with climatic conditions.
- NUCELLUS AND INTEGUMENT
-
The nucellus is the tissue that usually makes up the greater part of the ovule of seed plants. It encloses the embryo sac. It is itself enclosed by one or two protective coats called integuments, which become the seed coat.
- SPORANGIUM
-
A reproductive structure in plants that produces spores by meoisis; in angiosperms, the anthers are groups of four sporangia.
- EUDICOTS
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The largest clade of angiosperms, characterized by three symmetrically placed pollen apertures or aperture arrangements derived from this.
- SEPAL
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Sepals form the outer ring of modified leaves that surrounds the petals, stamens and carpels.
- PERIANTH
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A collective term for all the external parts of the flower: the calyx, or sepals, and the corolla, or petals.
- LODICULE
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Plug or flap of tissue in the grass flower that occurs between the stamens and the bracts that enclose the flower, swelling rapidly to open the flower.
- PAPPUS
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A group of modified sepals often in the form of a ring of silky or bristly hairs, or scales.
- XEROPHYTE
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A plant adapted for growth under arid conditions.
- HALOPHYTE
-
A salt-tolerant terrestrial plant.
- APICAL DOMINANCE
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The tendency for the apical meristem of a plant to be more active than its lateral or axial meristems. It is particularly evident in young trees and is due to the production of auxins (plant hormones) in the apical meristem.
- SELECTIVE SWEEP
-
Process by which new favourable mutations become fixed so quickly that physically linked alleles also become fixed by 'hitchhiking'.
- EPIMUTATION
-
A heritable change in gene expression but not gene sequence. This usually takes place by abnormally increasing the methylation status of a gene, producing a loss-of-function phenotype. This can then be heritable for many generations, unless reset by meiosis.
- FITNESS PEAK
-
A phenotype or part of the possible morphological variation that has high fitness.
- ADAPTIVE LANDSCAPE
-
If all morphological variation or all possible phenotypes are considered as a landscape some will have high fitness (peaks) and others low fitness (valleys).
- COROLLA
-
Whorl of floral leaves (petals) that surround the stamens. They are usually coloured and attract pollinators, and may be joined into a tube or ring, as in advanced eudicots.
- REPLUM
-
Septum dividing the ovary of crucifers (such as Arabidopsis) into chambers.
- VALVE
-
Part of the ovary wall, at which splitting occurs to release the seeds.
- MUTATIONAL LOAD
-
Negative fitness consequence of naturally occurring mutations.
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Cronk, Q. Plant evolution and development in a post-genomic context. Nat Rev Genet 2, 607–619 (2001). https://doi.org/10.1038/35084556
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DOI: https://doi.org/10.1038/35084556
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