Prosthechea: a chemical discontinuity in Laeliinae

Higgins, Wesley E.

doi:10.15517/lank.v3i2.23010

Cited by 5 publications

(7 citation statements)

References 5 publications

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“…5 An interesting aspect of the reproductive biology of P. cochleata is that this flower is thought to be autogamous, or self-pollinating. 15 It takes energy for a flower to produce a fragrance, which seems counterproductive for a flower species that is autogamous to be producing fragrance volatiles. 2 Additionally, the fragrance declined during the evening hours, suggesting that it would be most attractive to a day-flying pollinator.…”

Section: Discussionmentioning

confidence: 99%

Floral fragrance analysis of Prosthechea cochleata (Orchidaceae), an endangered native, epiphytic orchid, in Florida

Ray

Stuhl

Gillett-Kaufman

2018

Plant Signaling & Behavior

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South Florida is home to a number of native species of orchids. The Florida Panther National Wildlife Refuge has 27 known species, including Prosthechea cochleata, the clamshell orchid, which is listed as endangered on Florida's Regulated Plant Index. In a prior study done on this species in Mexico, P. cochleata was found to produce no floral fragrance at the particular study location. However, blooming orchids of this species at the University of Florida in Gainesville, were noted to be fragrant. In this paper, we document the presence of floral fragrance compounds from P. cochleata by using by gas chromatography mass spectrometry (GC/MS) analysis of headspace volatile collection. The orchids sampled were found to be consistently producing eight volatiles that are common in floral fragrances, including those of previous orchid species studied. By knowing the fragrance compounds produced, we can better understand the pollination biology of this endangered orchid. This information could be used to help future conservation efforts for P. cochelata by increasing pollination and subsequent seed capsule production.

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Section: Discussionmentioning

confidence: 99%

Floral fragrance analysis of Prosthechea cochleata (Orchidaceae), an endangered native, epiphytic orchid, in Florida

Ray

Stuhl

Gillett-Kaufman

2018

Plant Signaling & Behavior

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“…Among taxa in the Encyclia alliance Higgins (2003) recorded that species in Prosthechea produce fragrances and are pollinated by wasps. In Prosthechea squalida , our observations of the lip suggest that abundant secretions are produced to attract pollinators, resulting in a reward-based pollination syndrome.…”

Section: Discussionmentioning

confidence: 99%

“…In Prosthechea squalida , our observations of the lip suggest that abundant secretions are produced to attract pollinators, resulting in a reward-based pollination syndrome. In Encyclia and Oestlundia pollination is accomplished by Hymenoptera (diverse kinds of bees) ( Dressler, 1993 ; Higgins, 2003 ). We found the presence of cubic crystals around the actinocityc stomata of the anther cap in E. microbulbon , probably offered as attractors to the pollinators.…”

Section: Discussionmentioning

confidence: 99%

“…Epidendreae includes one of the largest genera in the Neotropics, the genus Epidendrum L ( Hágsater & Soto-Arenas, 2005 ; Pinheiro et al, 2009 ; Pinheiro & Cozzolino, 2013 ) and also a diverse group composed of minute plants, the Pleurothallidinae ( Pridgeon, Solano & Chase, 2001 ; Blanco & Barboza, 2005 ; Damon & Roblero, 2007 ; Karremans et al, 2015 ; Karremans, 2016 ). Plants in this tribe display remarkable variation in life form, floral morphology and pollination syndromes ( Van Der Pijl, Dodson & Flowers, 1969 ; Van den Berg, 2005 ; Jersáková, Johnson & Kindlmann, 2006 ; Freudenstein & Chase, 2015 ): for instance the showy insect-pollinated laelias and cattleyas ( Halbinger & Soto-Arenas, 1997 ; Borba & Braga, 2003 ; Van den Berg et al, 2009 ); the fragrant encyclias and prosthecheas, usually bee pollinated and exclusively pollinated by wasps respectively ( Higgins, 2003 ); Chysis Lindl. with large fusiform bulbs and fleshy-waxy flowers probably pollinated by different bees ( Dressler, 1993 ; Soto-Arenas, 2005a ; Soto-Arenas & Solano-Gómez, 2007 ; Soto-Arenas, 2008a ); Isochilus R.Br.…”

Section: Introductionmentioning

confidence: 99%

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Anther development in tribe Epidendreae: orchids with contrasting pollination syndromes

Valencia-Nieto

Sosa

Márquez‐Guzmán

2018

PeerJ

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BackgroundEpidendreae is one of the most diverse tribes among the orchids with remarkable variation in life form, floral morphology and pollination syndromes. Its circumscription was recently revised and subtribes Agrostophyllinae and Calypsoinae were transferred into this tribe. One of the principal floral characters utilized in classification of orchids is the incumbency or bending of the column. This study records and compares late stages of anther, column and lip development, and discusses anther characters in fifteen representative taxa of five of the six subtribes in Epidendreae with respect to classification and pollination biology.MethodsA series of late floral stages were sampled and fixed for examination under scanning electron microscope.ResultsAnther incumbency or bending in this group varies from 90° to almost 180°. Incumbency in the late stages of development is reached in Bletiinae, Ponerinae, Pleurothallidinae and Laeliinae whereas incumbency is reached early in its development in Corallorhiza and Govenia of Calypsoinae.DiscussionOur observations indicate that the position of Chysis in subtribe Bletiinae needs revision based on differences in a number floral, and in particular of anther characters; and that Coelia only shares the early anther incumbency with Calypsoinae members, but not the rest of floral and anther characters. Anatomical characters such as crystals around the actinocytic stomata on the anther cap and sugar crystals in Laeliinae; lack of rostellum in Bletiinae; coalescent anther with the column, lack of trichomes and papillae on lip keels, and underdeveloped rostellum in Chysis; a mechanism by which the anther cap comes off (it is joined with the grooved lip by a claw) in Isochilus are all related to pollination syndromes and reproductive biology.

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“…Prosthechea Knowles & Westc. comprises 24 species in Costa Rica and about 100 species ranging from Florida southward through Central America and the Antilles down to Argentina (Higgins, 2003;Withner and Harding, 2004;Mó et al, 2014). The genus was resurrected by Higgins (1998), who proposed a broad concept of Prosthechea, segregating it from the well-known genus Encyclia Hook.…”

Section: Introductionmentioning

confidence: 99%

Prosthechea tinukiana sp. nov. (Orchidaceae: Laeliinae): an update of theProsthechea prismatocarpa complex

Bogarín¹,

Karremans²

2015

Turk J Bot

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We describe and illustrate a new species of Prosthechea from Costa Rica. The species is similar to Prosthechea ionocentra, but it is easily distinguishable by its inflorescence originating from the penultimate mature pseudobulb; its purple spotted sepals and petals; the cordate, acute labellum; the disc with two longer, narrower keels; the stigmatic arms of the column, which are convergent and rounded; and the narrower stigma. Differences from other related species are given and discussed. Data on distribution, habitat and ecology, etymology, and phenology are provided. An updated key to the species of the Prosthechea prismatocarpa complex is presented.

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Prosthechea: a chemical discontinuity in Laeliinae

Cited by 5 publications

References 5 publications

Floral fragrance analysis of Prosthechea cochleata (Orchidaceae), an endangered native, epiphytic orchid, in Florida

Floral fragrance analysis of Prosthechea cochleata (Orchidaceae), an endangered native, epiphytic orchid, in Florida

Anther development in tribe Epidendreae: orchids with contrasting pollination syndromes

Prosthechea tinukiana sp. nov. (Orchidaceae: Laeliinae): an update of theProsthechea prismatocarpa complex

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