Cytogenetic affinity between the new species Glycine argyrea and its congeners

Grant, J. E.; Pullen, R; Brown, A. H. D.; Grace, J. P.; Gresshoff, P.M.

doi:10.1093/oxfordjournals.jhered.a110274

Cited by 28 publications

(7 citation statements)

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“…While this type of rooting is not preferred, particularly given the suspect status ofa molecular clock for this data set, it does join the annual species to the group ofperennials whose species have been used most successfully in intersubgeneric crosses (Broue et aI., 1982;Newell and Hymowitz, 1982;Singh and Hymowitz, 1985a;Grant et al, 1986). Chloroplast-DNA studies on the group ofgenera putatively related to Glycine (Phaseoleae subtribe Glycininae; Lackey, 1981) should provide definitive rooting of this tree and currently are in progress.…”

Section: Discussionmentioning

confidence: 99%

“…The principal source of information concerning relationships among these species has been the analysis of meiotic pairing in artificially produced inter-and intraspecific hybrids (Putievsky and Broue, 1979;Newell and Hymowitz, 1983;Grant et al, 1984bGrant et al, , 1986Hymowitz, 1985b, 1985c;Singh et al, 1988), which has documented the existence ofa number ofgenome groups in the subgenus. While genome analysis has been able to identify groups of related species, analysis of experimentally produced hybrids is incapable of resolving relationships among taxa whose genomes show little or no affinity.…”

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confidence: 99%

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A Chloroplast-DNA Phylogeny of the Wild Perennial Relatives of Soybean (Glycine Subgenus glycine): Congruence with Morphological and Crossing Groups

Doyle¹,

Doyle²,

Brown³

1990

Evolution

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Hypotheses ofevolutionary relationships among the Australian wild perennial relatives of soybean (Glycine subgenus Glycine) are based largely on patterns of meiotic pairing in intraand interspecific experimental hybrids. This evidence has indicated a number ofgenome groupings within the subgenus but has not resolved most phylogenetic relationships. Restriction-endonuclease site variation of chloroplast DNA (cpDNA) within the perennial subgenus is reported here, representing a sampling of approximately 3% of the approximately 150-kilobase plastome. Seven hundred twenty-one unique restriction sites were compared within Glycine using 29 restriction endonucleases; 157 sites varied within the genus. Distance and parsimony methods using these data yielded congruent results, recognizing the existence of three major groups within subgenus Glycine: the species-rich and geographically diverse A clade consisting of G. canescens and related taxa; the B clade, which includes the stoloniferous species; and the C group, containing two species with distinctive curved pods. These results are in general agreement with hypotheses based on genome analysis; inconsistencies involve the inclusion of genetically divergent taxa such as G. falcata in well-supported plastome clades comprised of otherwise interfertile species. Such findings are not unexpected if crossing barriers are considered to be unique features of such anomalous species, paralleling their often numerous morphological and cpDNA autapomorphies. Consideration of cpDNA divergence within the three major clades of subgenus Glycine indicates that the rate of plastome evolution is uncoupled from rates of morphological or ecological diversification.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

A Chloroplast-DNA Phylogeny of the Wild Perennial Relatives of Soybean (Glycine Subgenus glycine): Congruence with Morphological and Crossing Groups

Doyle¹,

Doyle²,

Brown³

1990

Evolution

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“…G. canescens does not contribute directly to any natural allopolyploids. The synthetic allopolyploids (2n = 78) were grown from seed produced from selfed plants that were created by doubling sterile F1 hybrids using colchicine, as described by Grant et al [1986]. Many years later, when chloroplast DNA variation in the group was examined, it was determined that the direction of the synthetic crosses is opposite that of natural T5 species.…”

Section: G Clandestina (G1253)mentioning

confidence: 99%

Lessons from Natural and Artificial Polyploids in Higher Plants

Hegarty

Coate

Sherman-Broyles

et al. 2013

Cytogenet Genome Res

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Polyploidy in higher plants is a major source of genetic novelty upon which selection may act to drive evolution, as evidenced by the widespread success of polyploid species in the wild. However, research into the effects of polyploidy can be confounded by the entanglement of several processes: genome duplication, hybridisation (allopolyploidy is frequent in plants) and subsequent evolution. The discovery of the chemical agent colchicine, which can be used to produce artificial polyploids on demand, has enabled scientists to unravel these threads and understand the complex genomic changes involved in each. We present here an overview of lessons learnt from studies of natural and artificial polyploids, and from comparisons between the 2, covering basic cellular and metabolic consequences through to alterations in epigenetic gene regulation, together with 2 in-depth case studies in Senecio and Glycine. See also the sister article focusing on animals by Arai and Fujimoto in this themed issue.

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“…A fourth genus, Gossypium, was excluded because of the difficulty of estimating genetic distances among multiple polyploid and reticulate species within this genus, and the many unresolved systematic relationships among taxa in this group (Seelanan et al 1997(Seelanan et al , 1999. Allopatric and sympatric species pairs were determined using species ranges obtained from the literature or floras (Glycine: Brown et al 1985;Grant et al 1986;Harden 1990. Silene: Hitchcock and Maguire 1947;Prentice 1976;Ghazanfar 1981.…”

Section: Sources Of the Datamentioning

confidence: 99%

Patterns of Reproductive Isolation in Three Angiosperm Genera

2004

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Abstract. Analyses among animal species have found that reproductive isolation increases monotonically with genetic distance, evolves more quickly for prezygotic than postzygotic traits, and is stronger among sympatric than allopatric species pairs. The latter pattern is consistent with expectations under the reinforcement hypothesis. To determine whether similar trends are found among plant species, patterns of reproductive isolation (postpollination prezygotic, postzygotic, and ''total'' isolation) in three plant genera (Glycine, Silene, Streptanthus) were examined using data from previously published artificial hybridization experiments. In Silene, all measures of reproductive isolation were positively correlated with genetic distance. In contrast, in Glycine and Streptanthus, correlations between reproductive isolation and genetic distance were weak or nonsignificant, possibly due to the influence of biologically unusual taxa, variable evolutionary forces acting in different lineages, or insufficient time to accumulate reproductive isolation. There was no evidence that postpollination prezygotic reproductive isolation evolved faster than postzygotic isolation in Glycine or Silene. We also detected no evidence for faster accumulation of postmating prezygotic isolation between sympatric than allopatric species pairs; thus we found no evidence for the operation of speciation via reinforcement. In Silene, which included six polyploid species, results suggest that changes in ploidy disrupt a simple monotonic relationship between isolation and genetic distance.

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Cytogenetic affinity between the new species Glycine argyrea and its congeners

Cited by 28 publications

References 0 publications

A Chloroplast-DNA Phylogeny of the Wild Perennial Relatives of Soybean (Glycine Subgenus glycine): Congruence with Morphological and Crossing Groups

A Chloroplast-DNA Phylogeny of the Wild Perennial Relatives of Soybean (Glycine Subgenus glycine): Congruence with Morphological and Crossing Groups

Lessons from Natural and Artificial Polyploids in Higher Plants

Patterns of Reproductive Isolation in Three Angiosperm Genera

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