Stamen Development in<i>Salvia</i>L.: Homology Reinvestigated

Claßen‐Bockhoff, Regine; Crone, M.; Baikova, Elena

doi:10.1086/386565

Cited by 41 publications

(41 citation statements)

References 4 publications

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“…The most remarkable developmental difference observed between the species examined was in stamen development, because only two fertile stamens develop in Rosmarinus and Salvia (Claßen‐Bockhoff et al, ). In these taxa, reduction occurs in the adaxial stamens by suppression of their growth once initiated.…”

Section: Discussionmentioning

confidence: 99%

Comparative floral development in the tribe Mentheae (Nepetoideae: Lamiaceae) and its bearing on the evolution of floral patterns in asterids

Naghiloo

Khodaverdi

Esmaillou

et al. 2014

J of Sytematics Evolution

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A comparative developmental study of flowers was carried out using epi-illumination light microscopy on four genera of Lamiaceae (Nepeta, Rosmarinus, Salvia, and Ziziphora), representing all three subtribes of Mentheae. All species examined share unidirectional (adaxial to abaxial) sepal initiation, except Rosmarinus, which has the reverse unidirectional sequence, starting abaxially. Initiated but suppressed bracteoles were detected only in Rosmarinus. In Rosmarinus, Salvia, and Ziziphora, initiation of petals and stamens proceeds unidirectionally from the abaxial side. Floral initiation of Nepeta has bidirectional inception of petals and unidirectional stamen initiation from the adaxial side. Temporal overlap in organ initiation between petal and stamen whorls occurs in all taxa, though this feature is more prominent in Rosmarinus. Significant structural and developmental features that distinguish the four genera include: (1) polysymmetric calyx tube, highly tomentose corolla and deeply four-partitioned ovary in Nepeta; (2) monosymmetric two-lipped calyx and shallowly four-partitioned ovary in Ziziphora; and (3) suppression of adaxial stamens in Salvia and Rosmarinus. Adaxial stamens are absent from Rosmarinus, but reduced stamens remain as staminodia in Salvia. In a phylogenetic context, the late monosymmetry of Nepeta and very early monosymmetry of Rosmarinus could both be regarded as derived conditions compared with the early monosymmetry of Salvia and Ziziphora.

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Section: Discussionmentioning

confidence: 99%

Comparative floral development in the tribe Mentheae (Nepetoideae: Lamiaceae) and its bearing on the evolution of floral patterns in asterids

Naghiloo

Khodaverdi

Esmaillou

et al. 2014

J of Sytematics Evolution

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“…Bentham (1876) separated the genus Salvia into 12 sections based on stamen variation, which remains until now the most widely accepted treatment (Briquet 1897;Stibal 1934Stibal , 1935Epling 1938Epling , 1939Pobedimova 1954;Hruby 1962). The evolution of the stamen connective and unique lever mechanism has occurred parallel in the Old World and the New World (Claßen-Bockhoff et al 2004;Walker and Sytsma 2007). The demonstration of the nonmonophyletic origin of Salvia based on molecular data (Walker et al 2004;Walker and Sytsma 2007) has led to the reinvestigation of morphological characters in Salvia and closely related genera in the subtribe Salviinae.…”

Section: Introductionmentioning

confidence: 99%

A Search for Phylogenetically Informative Pollen Characters in the Subtribe Salviinae (Mentheae: Lamiaceae)

Moon¹,

Vinckier

Walker

et al. 2008

International Journal of Plant Sciences

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The pollen morphology and ultrastructure of the subtribe Salviinae were investigated with light, scanning electron, and transmission electron microscopy. In addition, cladistic analyses of the obtained morphological data, supplemented with rbcL data from GenBank, were conducted in order to assess the phylogenetic signal of palynological characters. Salviinae pollen is small to large, oblate to prolate in shape, with a circular to slightly elliptic amb, and mostly hexacolpate. Perovskia abrotanoides appears to be distylous and shows a significant pollen dimorphism between pin and thrum flowers. The sexine ornamentation of the genera Lepechinia and Chaunostoma is perforate, while the ornamentation of other genera is bireticulate. Perovskia expresses a unique type of sexine ornamentation. The sexine ornamentation variation in Salvia has systematic importance but only partly corresponds with current phylogenetic hypotheses. Unbranched columellae and a continuous, granular endexine are hypothesized to be a symplesiomorphic condition in the tribe Mentheae. Our combined phylogenetic analyses show that the addition of palynological characters contributes to improved resolution and also increases bootstrap support values in comparison with molecular phylogenetic analyses.

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“…Calosphace with centres of diversity in Mexico, the Andean region, and southern Brazil and Argentina. Monophyly of subgenus Calosphace is supported by morphology (Bentham 1876;Epling 1939;Claßen-Bockhoff et al 2004) and molecular data (Walker and Sytsma 2007).…”

Section: Phylogenetic Relationshipsmentioning

confidence: 92%

Chromosome number evolution, biogeography and phylogenetic relationships inSalvia(Lamiaceae)

Ranjbar

Pakatchi

Babataheri

2015

Webbia

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Stamen Development inSalviaL.: Homology Reinvestigated

Cited by 41 publications

References 4 publications

Comparative floral development in the tribe Mentheae (Nepetoideae: Lamiaceae) and its bearing on the evolution of floral patterns in asterids

Comparative floral development in the tribe Mentheae (Nepetoideae: Lamiaceae) and its bearing on the evolution of floral patterns in asterids

A Search for Phylogenetically Informative Pollen Characters in the Subtribe Salviinae (Mentheae: Lamiaceae)

Chromosome number evolution, biogeography and phylogenetic relationships inSalvia(Lamiaceae)

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