Turneraceae

Arbo, María Mercedes

doi:10.1007/978-3-540-32219-1_53

Cited by 24 publications

(55 citation statements)

References 28 publications

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“…3h) has been cited for several species of Turnera (Barrett 1978), Piriqueta (Arbo 1995) and the Malagasy genus Arboa (Thulin et al 2012). It has also been recorded in Turnera oculata Story (Jaarsveld 2012), one of the two African species of the genus.…”

Section: Discussionmentioning

confidence: 99%

“…Scale bars a-f = 0.5 mm. a aril, c chalaza, ex exostome, h hilum, r raphe, ri rim even though they are also found in some shrubby species of Piriqueta (Arbo 1995;Gonzalez and Arbo 2013).…”

Section: Micromorphology Of Seed Coat (Episperm)mentioning

confidence: 99%

“…Passifloraceae sensu stricto, are strongly supported. Urban's monography (1883) and the revisions of the neotropical genera (Arbo 1977(Arbo , 1979(Arbo , 1995(Arbo , 1997(Arbo , 2000(Arbo , 2005(Arbo , 2008 highlighted the relevance of seed characters for taxonomy. In these studies, the authors described seed shape, size, color, curvature, type of coat (episperm), as well as the degree of chalaza development and orientation, shape of the exostome, and relative length and width of the aril.…”

Section: Morphological Treesmentioning

confidence: 99%

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Phylogenetic relationships within Turneraceae based on morphological characters with emphasis on seed micromorphology

2015

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Genera of Turneraceae differ notably in connation/adnation of calyx, corolla, and androecium. Floral and seed morphology were analyzed in all genera. Phylogenetic analyses were made using a matrix of 91 characters coded for 102 taxa including all genera of Turneraceae and all series of Turnera. Our goals were: assessing the impact of morphology in the cladistic analyses of Turneraceae and comparing our results with those based on molecular datasets. Our analyses suggest that all genera are monophyletic. The inclusion of seed micromorphology in the analyses increased resolution within Turnera, the strict consensus tree shows four main clades, each gathering two or more current series.

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Section: Discussionmentioning

confidence: 99%

“…Scale bars a-f = 0.5 mm. a aril, c chalaza, ex exostome, h hilum, r raphe, ri rim even though they are also found in some shrubby species of Piriqueta (Arbo 1995;Gonzalez and Arbo 2013).…”

Section: Micromorphology Of Seed Coat (Episperm)mentioning

confidence: 99%

Section: Morphological Treesmentioning

confidence: 99%

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Phylogenetic relationships within Turneraceae based on morphological characters with emphasis on seed micromorphology

2015

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“…We have categorized the breeding systems of Stapfiella with a degree of uncertainty (Table 1). Interestingly, the flowers of species of four African genera ( Hyalocalyx , Loewia , Streptopetalum & Tricliceras ) possess stamens of different lengths, mostly two shorter and three longer within a flower, for both homostylous and distylous species (Table 1; Urban, 1883; Arbo, 2006).…”

Section: Breeding Systemsmentioning

confidence: 99%

Breeding system variation, genetics and evolution in the Turneraceae

2006

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We review the genetics and evolution of breeding systems in the Turneraceae. Distyly occurs in seven of 10 genera and 81% of species. The remaining species are homostylous. Polyploid evolution has been significant in Turnera . Approximately 60% of species are polyploid ranging from diploid through decaploid. No relationship between breeding system and polyploidy is evident. The genetics of distyly involves a one-locus two-allele system ( S and s). Evidence from crosses with homostylous species and mutants is consistent with the possibility that a ' Primula -type' supergene underlies distyly but does not prove this to be the case. A polygalacturonase, and an α -dioxygenase specific to the transmitting tissue of short-styled plants both exhibit morph-limited expression in concert with predictions from an evolutionary model. The function of the proteins in distyly, if any, is unknown. We have begun constructing a fine-scale genetic map of Turnera . Two genetic markers lie within 0.2 c M of the distyly locus. This should provide a starting point for positional cloning of the distyly locus and reveal the genetic architecture and molecular basis of distyly.New Phytologist (2006) 171: 539-551

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“…Malesherbioideae has small seeds, of 1.3 to 2.7 mm, with a globose shape; a ridged‐reticulate seed coat organized in vertical and horizontal tiers, and a prominent chalaza (Ricardi, 1967; Kubitzki, 2007). Turneroideae has small seeds, of approximately 1.2 to 5 mm long, elongated in shape and often curved with ridged‐reticulate or striate coats, and a prominent or inconspicuous chalaza (Arbo, 2007; Arbo et al, 2015; Fig. 5; Appendix S2).…”

Section: Resultsmentioning

confidence: 99%