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Kämper W, Trueman SJ, Ogbourne SM, Wallace HM. Pollination services in a macadamia cultivar depend on across‐orchard transport of cross pollen. J Appl Ecol 2021. [DOI: 10.1111/1365-2664.14002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wiebke Kämper
- Food Futures Platform Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University Nathan Qld Australia
- Department of Animal Ecology, Evolution and Biodiversity Ruhr‐University Bochum Bochum Germany
- Genecology Research Centre University of the Sunshine Coast Maroochydore DC Qld Australia
| | - Stephen J. Trueman
- Food Futures Platform Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University Nathan Qld Australia
- Genecology Research Centre University of the Sunshine Coast Maroochydore DC Qld Australia
| | - Steven M. Ogbourne
- Genecology Research Centre University of the Sunshine Coast Maroochydore DC Qld Australia
- School of Science, Technology and Engineering University of the Sunshine Coast Maroochydore DC Qld Australia
| | - Helen M. Wallace
- Food Futures Platform Centre for Planetary Health and Food Security, School of Environment and Science, Griffith University Nathan Qld Australia
- Genecology Research Centre University of the Sunshine Coast Maroochydore DC Qld Australia
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Fujii S, Tsuchimatsu T, Kimura Y, Ishida S, Tangpranomkorn S, Shimosato-Asano H, Iwano M, Furukawa S, Itoyama W, Wada Y, Shimizu KK, Takayama S. A stigmatic gene confers interspecies incompatibility in the Brassicaceae. NATURE PLANTS 2019; 5:731-741. [PMID: 31263241 DOI: 10.1038/s41477-019-0444-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 05/09/2019] [Indexed: 06/09/2023]
Abstract
Pre-zygotic interspecies incompatibility in angiosperms is a male-female relationship that inhibits the formation of hybrids between two species. Here, we report on the identification of STIGMATIC PRIVACY 1 (SPRI1), an interspecies barrier gene in Arabidopsis thaliana. We show that the rejection activity of this stigma-specific plasma membrane protein is effective against distantly related Brassicaceae pollen tubes and is independent of self-incompatibility. Point-mutation experiments and functional tests of synthesized hypothetical ancestral forms of SPRI1 suggest evolutionary decay of SPRI1-controlled interspecies incompatibility in self-compatible A. thaliana. Hetero-pollination experiments indicate that SPRI1 ensures intraspecific fertilization in the pistil when pollen from other species are present. Our study supports the idea that SPRI1 functions as a barrier mechanism that permits entrance of pollen with an intrinsic signal from self species.
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Affiliation(s)
- Sota Fujii
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan.
- Japan Science and Technology Agency, Precursory Research for Embryonic Science and Technology, Saitama, Japan.
| | - Takashi Tsuchimatsu
- Department of Biology, Graduate School of Science, Chiba University, Chiba, Japan
| | - Yuka Kimura
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Shota Ishida
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | | | - Hiroko Shimosato-Asano
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
| | - Megumi Iwano
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Shoko Furukawa
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
| | - Wakana Itoyama
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
| | - Yuko Wada
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan
| | - Kentaro K Shimizu
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
- Kihara Institute for Biological Research, Yokohama City University, Yokohama, Japan
| | - Seiji Takayama
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan.
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Nara, Japan.
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Evolutionary Pathways for the Generation of New Self-Incompatibility Haplotypes in a Nonself-Recognition System. Genetics 2018; 209:861-883. [PMID: 29716955 DOI: 10.1534/genetics.118.300748] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/28/2018] [Indexed: 11/18/2022] Open
Abstract
Self-incompatibility (SI) is a genetically based recognition system that functions to prevent self-fertilization and mating among related plants. An enduring puzzle in SI is how the high diversity observed in nature arises and is maintained. Based on the underlying recognition mechanism, SI can be classified into two main groups: self-recognition (SR) and nonself-recognition (NSR). Most work has focused on diversification within SR systems despite expected differences between the two groups in the evolutionary pathways and outcomes of diversification. Here, we use a deterministic population genetic model and stochastic simulations to investigate how novel S-haplotypes evolve in a gametophytic NSR [SRNase/S Locus F-box (SLF)] SI system. For this model, the pathways for diversification involve either the maintenance or breakdown of SI and can vary in the order of mutations of the female (SRNase) and male (SLF) components. We show analytically that diversification can occur with high inbreeding depression and self-pollination, but this varies with evolutionary pathway and level of completeness (which determines the number of potential mating partners in the population), and, in general, is more likely for lower haplotype number. The conditions for diversification are broader in stochastic simulations of finite population size. However, the number of haplotypes observed under high inbreeding and moderate-to-high self-pollination is less than that commonly observed in nature. Diversification was observed through pathways that maintain SI as well as through self-compatible intermediates. Yet the lifespan of diversified haplotypes was sensitive to their level of completeness. By examining diversification in a NSR SI system, this model extends our understanding of the evolution and maintenance of haplotype diversity observed in a recognition system common in flowering plants.
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Barmentlo SH, Meirmans PG, Luijten SH, Triest L, Oostermeijer JGB. Outbreeding depression and breeding system evolution in small, remnant populations of Primula vulgaris: consequences for genetic rescue. CONSERV GENET 2017; 19:545-554. [PMID: 31007635 PMCID: PMC6448329 DOI: 10.1007/s10592-017-1031-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 11/17/2017] [Indexed: 12/04/2022]
Abstract
Many species suffer from anthropogenic habitat fragmentation. The resulting small and isolated populations are more prone to extinction due to, amongst others, genetic erosion, inbreeding depression and Allee-effects. Genetic rescue can help mitigate such problems, but might result in outbreeding depression. We evaluated offspring fitness after selfing and outcrossing within and among three very small and isolated remnant populations of the heterostylous plant Primula vulgaris. We used greenhouse-grown offspring from these populations to test several fitness components. One population was fixed for the pin-morph, and was outcrossed with another population in the field to obtain seeds. Genetic diversity of parent and offspring populations was studied using microsatellites. Morph and population-specific heterosis, inbreeding and outbreeding depression were observed for fruit and seed set, seed weight and cumulative fitness. Highest fitness was observed in the field-outcrossed F1-population, which also showed outbreeding depression following subsequent between-population (back)crossing. Despite outbreeding depression, fitness was still relatively high. Inbreeding coefficients indicated that the offspring were more inbred than their parent populations. Offspring heterozygosity and inbreeding coefficients correlated with observed fitness. One population is evolving homostyly, showing a thrum morph with an elongated style and high autonomous fruit and seed set. This has important implications for conservation strategies such as genetic rescue, as the mating system will be altered by the introduction of homostyles.
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Affiliation(s)
- S. Henrik Barmentlo
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94062, 1090 GB Amsterdam, The Netherlands
- Present Address: Institute of Environmental Sciences, Leiden University, Van Steenis Building, Einsteinweg 2, 2333 CC Leiden, The Netherlands
| | - Patrick G. Meirmans
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94062, 1090 GB Amsterdam, The Netherlands
| | - Sheila H. Luijten
- Science4Nature,, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Ludwig Triest
- Laboratory for Plant Science and Nature Management, Free University Brussels, Pleinlaan 2, 1050 Brussels, Belgium
| | - J. Gerard B. Oostermeijer
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94062, 1090 GB Amsterdam, The Netherlands
- Science4Nature,, Science Park 904, 1098 XH Amsterdam, The Netherlands
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Ganders FR. FECUNDITY IN DISTYLOUS AND SELF-INCOMPATIBLE HOMOSTYLOUS PLANTS OF MITCHELLA REPENS
(RUBIACEAE). Evolution 2017; 29:186-188. [DOI: 10.1111/j.1558-5646.1975.tb00826.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/1973] [Indexed: 11/27/2022]
Affiliation(s)
- Fred R. Ganders
- Department of Botany; University of British Columbia; Vancouver B.C. V6T 1W5 Canada
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Bull JJ, Pease CM. COMBINATORICS AND VARIETY OF MATING-TYPE SYSTEMS. Evolution 2017; 43:667-671. [DOI: 10.1111/j.1558-5646.1989.tb04263.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/1988] [Accepted: 12/07/1988] [Indexed: 12/01/2022]
Affiliation(s)
- J. J. Bull
- Department of Zoology; University of Texas; Austin TX 78712
| | - Craig M. Pease
- Department of Zoology; University of Texas; Austin TX 78712
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Les DH, Reinartz JA, Esselman EJ. GENETIC CONSEQUENCES OF RARITY INASTER FURCATUS(ASTERACEAE), A THREATENED, SELF-INCOMPATIBLE PLANT. Evolution 2017; 45:1641-1650. [DOI: 10.1111/j.1558-5646.1991.tb02669.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/1990] [Accepted: 05/20/1991] [Indexed: 11/30/2022]
Affiliation(s)
- Donald H. Les
- Department of Biological Sciences; P.O. Box 413
- The University of Wisconsin-Milwaukee; Milwaukee WI 53201 USA
| | - James A. Reinartz
- Field Station; The University of Wisconsin-Milwaukee; Milwaukee WI 53201 USA
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Marks GE. THE ORIGIN AND SIGNIFICANCE OF INTRASPECIFIC POLYPLOIDY: EXPERIMENTAL EVIDENCE FROM SOLANUM CHACOENSE. Evolution 2017; 20:552-557. [PMID: 28562905 DOI: 10.1111/j.1558-5646.1966.tb03385.x] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/1966] [Indexed: 11/29/2022]
Affiliation(s)
- G E Marks
- John Innes Institute, Hertford, Herts, England
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Vuilleumier BS. THE ORIGIN AND EVOLUTIONARY DEVELOPMENT OF HETEROSTYLY IN THE ANGIOSPERMS. Evolution 2017; 21:210-226. [DOI: 10.1111/j.1558-5646.1967.tb00150.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/1965] [Indexed: 11/28/2022]
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Layman NC, Fernando MTR, Herlihy CR, Busch JW. Costs of selfing prevent the spread of a self‐compatibility mutation that causes reproductive assurance. Evolution 2017; 71:884-897. [DOI: 10.1111/evo.13167] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/15/2016] [Accepted: 12/21/2016] [Indexed: 02/02/2023]
Affiliation(s)
- Nathan C. Layman
- School of Biological Sciences Washington State University Pullman Washington 99164
| | - M. Thilina R. Fernando
- Department of Biology, Evolution and Ecology Group Middle Tennessee State University Murfreesboro Tennessee 37132
| | - Christopher R. Herlihy
- Department of Biology, Evolution and Ecology Group Middle Tennessee State University Murfreesboro Tennessee 37132
| | - Jeremiah W. Busch
- School of Biological Sciences Washington State University Pullman Washington 99164
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12
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Kües U. In memory of Lorna Ann Casselton, CBE, MA, PhD, DSc, MAE, FRS. FUNGAL BIOL REV 2015. [DOI: 10.1016/j.fbr.2015.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Cocker JM, Webster MA, Li J, Wright J, Kaithakottil G, Swarbreck D, Gilmartin PM. Oakleaf: an S locus-linked mutation of Primula vulgaris that affects leaf and flower development. THE NEW PHYTOLOGIST 2015; 208:149-61. [PMID: 25856106 PMCID: PMC4973830 DOI: 10.1111/nph.13370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 02/07/2015] [Indexed: 06/04/2023]
Abstract
In Primula vulgaris outcrossing is promoted through reciprocal herkogamy with insect-mediated cross-pollination between pin and thrum form flowers. Development of heteromorphic flowers is coordinated by genes at the S locus. To underpin construction of a genetic map facilitating isolation of these S locus genes, we have characterised Oakleaf, a novel S locus-linked mutant phenotype. We combine phenotypic observation of flower and leaf development, with classical genetic analysis and next-generation sequencing to address the molecular basis of Oakleaf. Oakleaf is a dominant mutation that affects both leaf and flower development; plants produce distinctive lobed leaves, with occasional ectopic meristems on the veins. This phenotype is reminiscent of overexpression of Class I KNOX-homeodomain transcription factors. We describe the structure and expression of all eight P. vulgaris PvKNOX genes in both wild-type and Oakleaf plants, and present comparative transcriptome analysis of leaves and flowers from Oakleaf and wild-type plants. Oakleaf provides a new phenotypic marker for genetic analysis of the Primula S locus. We show that none of the Class I PvKNOX genes are strongly upregulated in Oakleaf leaves and flowers, and identify cohorts of 507 upregulated and 314 downregulated genes in the Oakleaf mutant.
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Affiliation(s)
- Jonathan M. Cocker
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Margaret A. Webster
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Jinhong Li
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Jonathan Wright
- The Genome Analysis CentreNorwich Research ParkNorwichNR4 7UHUK
| | | | - David Swarbreck
- The Genome Analysis CentreNorwich Research ParkNorwichNR4 7UHUK
| | - Philip M. Gilmartin
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorwichNR4 7TJUK
- John Innes CentreNorwich Research ParkNorwichNR4 7UHUK
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Self-incompatibility in species ofLycopersiconSect.Eriopersiconand hybrids withL. esculentum. ACTA ACUST UNITED AC 2014. [DOI: 10.3733/hilg.v23n04p101] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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ABSTRACTS. Hereditas 2010. [DOI: 10.1111/j.1601-5223.1950.tb03394.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Abstract
Cultivated plants ofNicotiana alataare self-incompatible and are of two kinds: normal (N); and exceptional (M). N plants are reciprocally compatible withN.langsdorffii; M plants are compatible only as males. M plants contain an unusual allele,SFI, which has a dual action in the style: it rejects both self-pollen, andSfpollen fromN. langsdorffii. The overall results agree with the assumption that theSFIgene produces two kinds of specificity in the style:primaryspecificity, which is responsible for the rejection ofSfpollen; andsecondaryspecificity, which is responsible for the rejection of self-pollen as inSIalleles generally. The genetic sub-units concerned must be closely linked; there was no evidence for their dissociation in the 599 plants studied.In both compatible and incompatible pollinations,SFIpollen grows more slowly thanSIand, in addition, appears to depress the normal rate of growth ofSIpollen. In consequence, crossesSfSf×SISFI♂ yielded significantly fewer S.I. plants than the 50% expected. The two kinds of pollen grew at comparable rates, however, when F1(M × M) plants involving parents from different original sources were backcrossed toSfSf♀. Progenies then showed the expected 1:1 ratio of S.I. to S.C. plants. These results are assumed to be due to differential behaviour of theSFIallele according to its genetic background. The change in background would be from a degree of homozygosity, in plants from the same source, to a degree of heterozygosity, in crosses between plants from different sources.The high incidence of theSFIgene inN. alatais considered to be due to the advantage it confers on a self-incompatible population when it is overlapping with a related self-compatible population (having theSfgene). Plants carrying anSFIallele, by rejecting the Sfpollen, will restrict the spread of inbreeding and so be favoured by selection.The origin of theSFIandSfalleles are discussed in relation to the author's hypothesis ofS-gene structure.
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Immunological analysis of incompatibility (S) proteins and of cross-reacting material in a self-compatible mutant of Oenothera organensis. Genet Res (Camb) 2009. [DOI: 10.1017/s0016672300003207] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Proteins of pollen of Oenothera organensis from heterozygous S2S3, S2S6, S3S6 and S4S6 and homozygous S6S6 genotypes produce characteristic precipitation lines in agar-gel plates against antisera prepared from the pollen. The maximum number of precipitation lines was three, and with some genotypes only one line was formed. The lines were characteristic of the different S alleles, but there was a strong cross-reaction between S4 pollen and S6 antiserum. The S protein diffused out from intact pollen grains as readily as from macerated pollen indicating that the normal site of action of the S protein, when the pollen tubes are growing down the style, is near the surface of the pollen tube. The self-compatible mutant S6′S6 in which the S6′ allele has lost the ability to produce an active pollen S protein, has a protein which cross-reacts strongly with S6 antiserum.
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Talent N. Evolution of gametophytic apomixis in flowering plants: an alternative model from Maloid Rosaceae. Theory Biosci 2009; 128:121-38. [DOI: 10.1007/s12064-009-0061-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Accepted: 02/02/2009] [Indexed: 11/29/2022]
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McCubbin AG, Lee C, Hetrick A. Identification of genes showing differential expression between morphs in developing flowers of Primula vulgaris. ACTA ACUST UNITED AC 2006. [DOI: 10.1007/s00497-006-0022-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mast AR, Feller DMS, Kelso S, Conti E. Buzz-pollinated Dodecatheon originated from within the heterostylous Primula subgenus Auriculastrum (Primulaceae): a seven-region cpDNA phylogeny and its implications for floral evolution. AMERICAN JOURNAL OF BOTANY 2004; 91:926-942. [PMID: 21653449 DOI: 10.3732/ajb.91.6.926] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We sequenced seven cpDNA regions from 70 spp. in Dodecatheon, Primula subgenus Auriculastrum, and outgroups, reconstructed their cpDNA phylogeny with maximum parsimony, and determined branch support with bootstrap frequencies and Bayesian posterior probabilities. Strongly supported conclusions include the (1) paraphyly of Primula subgenus Auriculastrum with respect to a monophyletic Dodecatheon, (2) sister relationship between the North American Dodecatheon and the Californian P. suffrutescens, (3) novel basal split in Dodecatheon to produce one clade with rugose and one clade with smooth anther connectives, (4) monophyly of all sections of Primula subgenus Auriculastrum, and (5) exclusion of the enigmatic Primula section Amethystina from the similar Primula subgenus Auriculastrum. These results support the origin of the monomorphic, buzz-pollinated flower of Dodecatheon from the heterostylous flower of Primula. We marshal evidence to support the novel hypothesis that the solanoid flower of Dodecatheon represents the fixation of recessive alleles at the heterostyly linkage group (pin phenotype). Of the remaining traits associated with their solanoid flowers, we recognize at least six likely to have arisen with the origin of Dodecatheon, one that preceded it (flower coloration, a transfer exaptation in Dodecatheon), and one that followed it (rugose anther connectives, an adaptation to buzz pollination).
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Affiliation(s)
- Austin R Mast
- Institute of Systematic Botany, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
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Abstract
• Researchers have hypothesized that self-compatibility (SC) should be more common in polyploid taxa than their diploid counterparts because of selection for reproductive assurance and/or the expected decline in inbreeding depression associated with having 'extra' gene copies. Support for this view has come from an observed breakdown of self-incompatibility (SI) in some species with a gametophytic system (GSI). The purpose of this research was to assess the strength of this relationship across a wider array of SI systems. • A large database, of diploid chromosome numbers, ploidy levels, and types of SI system, was assembled for angiosperm species and used to test for an association between ploidy and SC. • No strong association was found between SC and polyploidy at the level of species or families, and there was no evidence that those having a functional SI system also had fewer polyploid taxa or that most polyploids experience a breakdown in SI. • These results challenge the assumption that self-fertilization is strongly associated with polyploidy and suggest directions for further research on the evolution of polyploidy in relation to SI.
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Affiliation(s)
- Barbara K Mable
- Department of Botany, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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Talavera S, Gibbs PE, Fernández-Piedra MP, Ortiz-Herrera MA. Genetic control of self-incompatibility in Anagallis monelli (Primulaceae: Myrsinaceae). Heredity (Edinb) 2001; 87:589-97. [PMID: 11869350 DOI: 10.1046/j.1365-2540.2001.00951.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The genetic control of self-incompatibility (SI) was studied in the Mediterranean short-lived perennial species Anagallis monelli (Primulaceae: Myrsinaceae). Arrays of siblings, including families derived from reciprocal crosses, were cross-pollinated in full diallels, and compatibility groups were assesssed from a census of fruit-set. Two, three and four intercompatible and intraincompatible groups were found. These crossing relationships fit the model for gametophytic SI controlled by a single polymorphic gene locus in families derived from parents with one or no S alleles in common (two vs. four compatibility groups), whilst one genotype was presumed to be missing in the small families that showed only three compatibility groups.
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Affiliation(s)
- S Talavera
- Departamento de Biología Vegetal y Ecología, Apto. 1095, Universidad de Sevilla, 41080 Seville, Spain
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Hiscock SJ, Kües U. Cellular and molecular mechanisms of sexual incompatibility in plants and fungi. INTERNATIONAL REVIEW OF CYTOLOGY 1999; 193:165-295. [PMID: 10494623 DOI: 10.1016/s0074-7696(08)61781-7] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Plants and fungi show an astonishing diversity of mechanisms to promote outbreeding, the most widespread of which is sexual incompatibility. Sexual incompatibility involves molecular recognition between mating partners. In fungi and algae, highly polymorphic mating-type loci mediate mating through complementary interactions between molecules encoded or regulated by different mating-type haplotypes, whereas in flowering plants polymorphic self-incompatibility loci regulate mate recognition through oppositional interactions between molecules encoded by the same self-incompatibility haplotypes. This subtle mechanistic difference is a consequence of the different life cycles of fungi, algae, and flowering plants. Recent molecular and biochemical studies have provided fascinating insights into the mechanisms of mate recognition and are beginning to shed light on evolution and population genetics of these extraordinarily polymorphic genetic systems of incompatibility.
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Affiliation(s)
- S J Hiscock
- Department of Plant Sciences, University of Oxford, United Kingdom
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Ramsey J, Schemske DW. PATHWAYS, MECHANISMS, AND RATES OF POLYPLOID FORMATION IN FLOWERING PLANTS. ACTA ACUST UNITED AC 1998. [DOI: 10.1146/annurev.ecolsys.29.1.467] [Citation(s) in RCA: 1335] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Justin Ramsey
- Department of Botany, University of Washington, Seattle, Washington 98195-5325; e-mail:
| | - Douglas W. Schemske
- Department of Botany, University of Washington, Seattle, Washington 98195-5325; e-mail:
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Iridoid glycoside and allozyme variation within and among populations of Plantago rhodosperma decne. (Plantaginaceae). BIOCHEM SYST ECOL 1997. [DOI: 10.1016/s0305-1978(97)00040-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Franklin F, Lawrence M, Franklin-Tong V. Cell and Molecular Biology of Self-Incompatibility in Flowering Plants. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0074-7696(08)62485-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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34
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Ecology of two cytotypes ofButomus umbellatus I. Karyology and breeding behaviour. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf02853305] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Hinata K, Watanabe M, Toriyama K, Isogai A. A Review of Recent Studies on Homomorphic Self-Incompatibility. INTERNATIONAL REVIEW OF CYTOLOGY 1993. [DOI: 10.1016/s0074-7696(08)61877-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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36
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Dulberger R. Floral Polymorphisms and Their Functional Significance in the Heterostylous Syndrome. EVOLUTION AND FUNCTION OF HETEROSTYLY 1992. [DOI: 10.1007/978-3-642-86656-2_3] [Citation(s) in RCA: 122] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Clarke AE, Anderson MA, Atkinson A, Bacic A, Ebert PR, Jahnen W, Lush WM, Mau SL, Woodward JR. Recent developments in the molecular genetics and biology of self-incompatibility. PLANT MOLECULAR BIOLOGY 1989; 13:267-71. [PMID: 2491653 DOI: 10.1007/bf00025314] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
A summary of recent work on molecular aspects of self-incompatibility in Nicotiana alata is presented. The amino acid sequences of style proteins corresponding to different S-alleles of N. alata have a high level of homology in some regions and are variable in other regions. The regions of homology include N-terminal sequences as well as most of the glycosylation sites and cysteine residues. The glycosyl substituents may consist of a number of 'glycoforms'. The isolated style S-glycoproteins inhibit in vitro growth of pollen tubes. The S-glycoproteins tested inhibited the growth of pollen of several S-genotypes, and there was some specificity in the interaction. Heat treatment of the isolated S-glycoproteins dramatically increased their activity as inhibitors of pollen tube growth, although the specificity in the interaction was lost. The nature of the S-allele products in pollen is not yet established.
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Affiliation(s)
- A E Clarke
- Plant Cell Biology Research Centre, School of Botany, University of Melbourne, Parkville, Victoria, Australia
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Uyenoyama MK. On the evolution of genetic incompatibility systems. IV. Modification of response to an existing antigen polymorphism under partial selfing. Theor Popul Biol 1988; 34:347-77. [PMID: 3238621 DOI: 10.1016/0040-5809(88)90028-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A 2-locus model of the evolution of self-incompatibility in a population practicing partial selfing is presented. An allele is introduced at a modifier locus which influences the strength of the rejection reaction expressed by the style in response to antigens recognized in pollen. Two causes of inbreeding depression are investigated. First, offspring viability depends solely on the source (self or non-self) of the fertilizing pollen. Second, offspring viability declines with the expression of recessive deleterious alleles, segregating at a third (disease) locus, which exhibit an imperfect association with antigen alleles. Evolutionary changes occurring at the disease locus are not considered in this study. The condition under which a modifier allele that intensifies the incompatibility reaction increases when rare depends upon the number of antigens, the frequency of recessive deleterious alleles at the disease locus, and the level of association between the antigen locus and the disease locus. It is the improvement of viability among offspring derived by outcrossing, rather than the prevention of self-fertilization, that may represent the primary evolutionary function of genetic incompatibility systems.
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Affiliation(s)
- M K Uyenoyama
- Department of Zoology, Duke University, Durham, North Carolina 27706
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Bernatzky R, Anderson MA, Clarke AE. Molecular genetics of self-incompatibility in flowering plants. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/dvg.1020090102] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Barrett SCH, Brown AHD, Shore JS. Disassortative mating in tristylous Eichhornia paniculata (Pontederiaceae). Heredity (Edinb) 1987. [DOI: 10.1038/hdy.1987.7] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Abstract
The conventional hypothesis of gametophytic self-incompatibility in the angiosperms involves one to four multiallelic incompatibility loci and the positive inhibition of incompatible pollen tubes. However, this concept does not accommodate recent experimental data indicating that there may be many loci. An alternative hypothesis which incorporates many loci and complementary pollen-style interactions suggests that there may be no S gene, as previously thought, and that gametophytic self-incompatibility is perhaps merely one aspect of extensive pollen-style interactions.
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Ancora G, Sree Ramulu K. Plant regeneration from in vitro cultures of stem internodes in self-incompatible triploid lycopersicon peruvianum mill. and cytogenetic analysis of regenerated plants. ACTA ACUST UNITED AC 1981. [DOI: 10.1016/0304-4211(81)90231-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pandey KK. Evolution of incompatibility systems in plants: Complementarity and the mating locus in flowering plants and fungi. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 1977; 50:89-101. [PMID: 24407527 DOI: 10.1007/bf00277251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/1977] [Indexed: 06/03/2023]
Abstract
The restriction of sexual pairing by a specificity gene is considered to be an ancient development in the plant kingdom. The diversity and general parallelism of incompatibility systems seen amongst the phyla at the present time can be rationalized in terms of the association of various derived forms of the ancestral specificity unit with differing spectra of accessory factors controlling sexual physiology in the different phyla. Sexual morphogenesis has become divided into distinct phases under the control of complementary genes. These phases are initiated by a regulatory system of "Co-ordinator genes" which control the order in which groups of morphogenetic genes are expressed during development. The entire sexual cycle will be completed only if all the complementary groups are activated in the appropriate sequence. The present article discusses essential features of the evolution of the breeding locus in different phyla. These features are consistent in themselves with the present data and are not dependent on the proposed ancient origin of the specificity gene.The above hypothesis throws light on the (1) evolution of the complex mating loci in flowering plants and fungi; (2) evolution of complementary incompatibility and heteromorphic incompatibility in flowering plants; (3) anomalous cross-compatibility behaviour of mutants in the fungus Schizophyllum commune; (4) nature of homothallism in higher fungi; (5) mode of origin of new functional self-incompatibility alleles; and (6) "homogenic" and "heterogenic" incompatibility.
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Affiliation(s)
- K K Pandey
- Genetics Unit, Grasslands Division, D.S.I.R., Palmerston North, New Zealand
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Pandey KK. Phases in the S-gene expression, and S-allele interaction in the control of interspecific incompatibility. Heredity (Edinb) 1973. [DOI: 10.1038/hdy.1973.93] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Elements of theS-gene complex V. Interspecific cross-compatibility relationships and theory of the evolution of theS complex. Genetica 1969. [DOI: 10.1007/bf01787372] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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