Functional significance of the androecium in staminate and hermaphroditic flowers of Solanum carolinense (Solanaceae)

Connolly, Bryan A.; Anderson, Gregory J.

doi:10.1007/s00606-003-0029-7

Cited by 26 publications

(39 citation statements)

References 26 publications

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“…These bees have limited patrol area as they burrow along at ground level. Largebodied bumblebees, on the other hand, are the primary pollinators for S. carolinense (Connolly and Anderson, 2003). They typically move at longer distances, sometimes up to a dozen of kilometres (Heinrich, 1976).…”

Section: Testing Hypothesesmentioning

confidence: 99%

Historical events and allelic polymorphism at the gametophytic self-incompatibility locus in Solanaceae

2005

Heredity

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The historical migration rate of a species is often difficult to estimate with neutral markers, because the relationship between the turnover time of the markers and the age of the species commonly remains unknown. Compared with neutral markers, the plant self-incompatibility locus (S) provides a much better source of data for migration-rate estimation due to its high allelic polymorphism and antiquity. Here, the results from extensive surveys of S alleles in two wild solanaceous species, Solanum carolinense and Physalis longifolia, indicate that historical migration rates have differed significantly between the species; the higher migration rate found in S. carolinense appears to have interacted with the balancing selection at the S locus to result in fewer S alleles being maintained in the species. Historical population growth rates estimated via a modified coalescent approach also suggest a faster growing population for S. carolinense than for P. longifolia, which would have further widened their interspecific difference in S-allelle polymorphism. These historical factors may have reduced the probability of new S alleles to prevailing in S. carolinense, leaving old ones segregating at the S locus with little signature of positive selection being currently detectable.

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Section: Testing Hypothesesmentioning

confidence: 99%

Historical events and allelic polymorphism at the gametophytic self-incompatibility locus in Solanaceae

2005

Heredity

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“…Melongena (Mill.) Dunal, with 34 species in the New World (Nee, 1999), deserves special attention, because it includes the eggplant, and some of its representatives have been the subject of several studies due to their andromonoecy (Wakhloo, 1975a, b;Dulberger & al., 1981;Solomon, 1986Solomon, , 1987Elle, 1999;Connolly & Anderson, 2003). Nevertheless, the boundaries of sect.…”

Section: Introductionmentioning

confidence: 99%

Anatomical study of different fruit types in Argentine species of <i>Solanum</i> subgen. <i>Leptostemonum</i> (Solanaceae)

Chiarini¹,

Barboza²

2007

Anal. Jard. Bot. Madr.

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Chiarini, F. & G. Barboza. 2007. Anatomical study of different fruit types in Argentine species of Solanum subgen. Leptostemonum (Solanaceae). Anales Jard. Bot. Madrid 64(2): 165-175.The fruits of 11 species of Solanum subgen. Leptostemonum were studied. Cross and/or longitudinal microtome sections, stained mostly with astra blue/basic fuchsin, were prepared for microscopic examination. The fruits, notably heterogeneous, were classified into three categories. Three different kinds of cells were found of the epidermis, immediately below which a hypodermis, consisting in any of five types of structures, was always found. The mesocarp presented two histologically differentiated zones, an external one (formed by normal or spongy parenchyma, depending on the species), and an internal one, commonly juicy, and with proliferations among the seeds. This morpho-anatomical information was used to distinguish between non-capsular dehiscent fruits and the berry traditionally described for Solanum. The relationship between structure and function, and the probable dispersal syndromes are also discussed.

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“…Flowers mature acropetally, and in the greenhouse an infl orescence may contain up to 20 fl owers ( Travers et al, 2004 ). In natural populations, however, infl orescences tend to have only one fl ower open at a time ( Connolly and Anderson, 2003 ;A. Quesada-Aguilar, unpublished data).…”

Section: Methodsmentioning

confidence: 94%

“…Traditionally, fl owers with long styles have been assumed to function primarily as hermaphrodites and fl owers with reduced styles have been assumed to function primarily as males (Solomon, 1986;Anderson and Symon, 1989;Emms, 1993 ;Elle, 1998 ;Connolly and Anderson, 2003 ;Huang, 2003 ;Cuevas and Polito, 2004 ). Hypotheses to explain the evolution of andromonoecy have focused on the advantages of having male fl owers, and include:…”

mentioning

confidence: 99%

“…Solanum species, especially S. carolinense (Solanaceae) have served as model organisms to test all these hypotheses (Elle, 1999;Elle and Meagher, 2000 ;Connolly and Anderson, 2003 ;Vallejo-Marin and Rausher, 2007b). To date, results of studies reject the outcrossing hypothesis (Dulberger et al, 1981, Whelan andCostich, 1986 ), fi nd no support for the resource allocation hypothesis (Solomon, 1986;Elle, 1999;Vallejo-Marin and Rausher, 2007b) and fi nd variable support for both the pollen donation ( Elle and Meagher, 2000 ; Vallejo-Marin rates, and if the abundance and visitation rates of the pollinator taxa varies among populations, then a variety of morphological phenotypes could occur due to different selective pressures ( Glover and Barrett, 1986 ;Arroyo and Dafni, 1995 ;Alves Dos Santos, 2002 ;Arroyo et al, 2002 ;Javorek et al, 2002 ;Cariveau et al, 2004 ;P é rez-Barrales et al, 2007 ).…”

mentioning

confidence: 99%

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Flower morphology and pollinator dynamics in Solanum carolinense (Solanaceae): implications for the evolution of andromonoecy

Quesada-Aguilar

Kalisz

Ashman

2008

American J of Botany

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Flower morphology and pollinator dynamics play an important role in the evolution and maintenance of many breeding systems, including andromonoecy. We used a series of field experiments to test the functional relationship between flower morphology and pollination dynamics (e.g., pollen receipt and export) in Solanum carolinense. We find that long-styled flowers serve primarily as pollen recipients and short-styled flowers as pollen donors, making this the first study to support the male-female interference hypothesis for the evolution of andromonoecy. However, this difference in the primary male or female function of the flowers depends on the pollinator identity. In flowers visited by Bombus impatiens, style length has a positive relationship with pollen deposition and a negative relationship with pollen removal. In contrast, neither morphological nor behavioral traits determine pollen deposition or removal by small halictid bees. We demonstrate that different pollinators could select for different floral morphologies, and thus, our research suggests that pollinator-specific interactions with flower morphology play an important role in the evolution and maintenance of anrdromonoecy.

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Functional significance of the androecium in staminate and hermaphroditic flowers of Solanum carolinense (Solanaceae)

Cited by 26 publications

References 26 publications

Historical events and allelic polymorphism at the gametophytic self-incompatibility locus in Solanaceae

Historical events and allelic polymorphism at the gametophytic self-incompatibility locus in Solanaceae

Anatomical study of different fruit types in Argentine species of <i>Solanum</i> subgen. <i>Leptostemonum</i> (Solanaceae)

Flower morphology and pollinator dynamics in Solanum carolinense (Solanaceae): implications for the evolution of andromonoecy

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