Minority cytotypes in European populations of the Gymnadenia conopsea complex (Orchidaceae) greatly increase intraspecific and intrapopulation diversity

Trávníček, Pavel; Jersáková, Jana; Kubátová, Barbora; Krejčíková, Jana; Bateman, Richard M.; Lučanová, Magdalena; Krajníková, Eva; Těšitelová, Tamara; Štípková, Zuzana; Amardeilh, Jean-Pierre; Brzosko, Emilia; Jermakowicz, Edyta; Cabanne, Olivier; Durka, Walter; Efimov, Peter G.; Hedrén, Mikael; Hermosilla, Carlos Enrique; Kreutz, Karel; Kull, Tiiu; Tali, Kadri; Marchand, Olivier; Rey, Manel; Schiestl, Florian P.; Čurn, Vladislav; Suda, Jan

doi:10.1093/aob/mcs171

Cited by 39 publications

(35 citation statements)

References 40 publications

(47 reference statements)

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“…At these sites, G. conopsea blooms in June and July and sets fruit in mid-August. These populations are represented only by diploid G. conopsea sensu stricto (Trávnícek et al, 2012).…”

Section: Study Speciesmentioning

confidence: 99%

“…Br., a species widely regarded as allogamous and which is currently the subject of intensive research (Jersáková et al, 2010;Stark et al 2011;Trávnícek et al, 2012;Meekers and Honnay, 2011;Sletvold and Ågren, 2011;Sletvold et al, 2012). The common view is that this plant is self-compatible but depends on pollinators (Gustafsson, 2000;Huber et al, 2005;Jersáková et al, 2010;Sletvold and Ågren, 2011;Sletvold et al, 2012) and that under pollinator deficiency, selfing is conducted via geitonogamy (Meekers and Honnay, 2011).…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of Spontaneous Autogamy in the Allogamous Lepidopteran Orchid Gymnadenia Conopsea (L.) R. Br. (Orchidaceae)

Tałałaj¹,

Skierczyński²

2015

Acta Biologica Cracoviensia S. Botanica

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Studies of plant breeding systems are particularly important when they involve facultative processes, which can be overlooked in natural conditions. This especially applies to species that are considered allogamous, due to their pollination syndrome and floral architecture. We examined the potential level and factors enabling or limiting spontaneous autogamy in three populations of the lepidopteran orchid Gymnadenia conopsea. Using a bagging experiment, we noted the stages of the anther thecae and the positions of the pollinaria at the five phenological stages of the flower, as well as the quantity of autogamously set fruits and the number of properly formed seeds. In the studied populations, autogamy represents an accidental character, with a maximum of 3.3% of fruits set spontaneously per analysed sample in a given population, and with seed numbers ranging from 29 to 354. This process is an environmentally dependent co-product of the mechanisms that enable a position appropriate for touching the stigma (bending of the caudicle) and increase male fitness (disintegration of the massulae), preceded by the gradual opening of the anther chambers. Autopollination of G. conopsea may occur in the flowers at various flowering stages (excluding the beginning of anthesis) at each position on the inflorescence. K Ke ey y w wo or rd ds s: : Anther thecae, bending movement, dehydration, disintegrated pollinium.

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“…At these sites, G. conopsea blooms in June and July and sets fruit in mid-August. These populations are represented only by diploid G. conopsea sensu stricto (Trávnícek et al, 2012).…”

Section: Study Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanism of Spontaneous Autogamy in the Allogamous Lepidopteran Orchid Gymnadenia Conopsea (L.) R. Br. (Orchidaceae)

Tałałaj¹,

Skierczyński²

2015

Acta Biologica Cracoviensia S. Botanica

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“…In short, the ontogenetic pattern and mature size of the hyper-elongated central labellar lobe and crenulated lateral lobes of Himantoglossum s.s. appear in retrospect to be its most remarkable feature, though detailed surveys of ploidy levels via flow cytometry (cf. the study of Gymnadenia by Trávníček et al, 2012) and of associated mycorrhizae (cf. the study of Dactylorhiza by Jacquemyn et al, 2012) might yet prove instructive.…”

Section: Discussionmentioning

confidence: 99%

Himantoglossum hircinum(Lizard Orchid) reviewed in the light of new morphological and molecular observations

Bateman

Rudall

Hawkins

et al. 2013

New Journal of Botany

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[Running Head: Bateman et al. Observations on Lizard Orchid populations]Himantoglossum hircinum is one of the rarer and more charismatic orchids in the British flora. Morphometric comparison of the two largest and best-known populations in southern England -the coastal dune population at Sandwich and the chalk grassland population at Newmarket -using 46 characters showed that they differ only subtly, the Sandwich plants being on average more vegetatively robust and slightly more darkly pigmented, but possessing less extensive lip-spots and substantially longer 'arms'. A comparatively morphologically divergent semi-desert population from Ifrane, Morocco differs from the English populations in having broader stems, less recurved 'arms', a more strongly down-curved spur and in lacking near-circular spots within the sepals. Molecular comparison of 46 plants, representing 13 English populations and 18 populations from Continental Europe and Morocco, revealed only subtle distinctions in the high-copy nuclear gene ITS, and smaller-scale comparisons of the low-copy nuclear (LEAFY) and plastid (four intron) regions proved to be even less discriminatory. These results reinforce prior morphological inferences that H. hircinum is a cohesive species. Scanning electron microscopy elucidated the ontogeny of these remarkable flowers, suggesting that the exceptionally elongate central labellar lobe originated by accelerated heterochronic growth and showing that the characteristic spiral torsion always runs counter-clockwise. Lateral fusion of the paired viscidia is convergent with several other lineages of subtribe Orchidinae. Review of pollination and life-history features of H. hircinum suggest that they are typical of food-deceptive species within Orchidinae. The Lizard Orchid is infamous for geographic mobility; its cycles of expansion and contraction through the last century have been interpreted as reflecting a net northward migration in response to recent climate change. Our data tentatively suggest relatively recent colonisation of Morocco at high altitudes and an overall northwestward direction of migration into the UK. ITS ribotypes indicate multiple immigration events leading to levels of genetic diversity in England comparable with those on the Continent. A nonrecent origin is inferred for H. hircinum which, despite recent systematic revisions, may *Manuscript Click here to download Manuscript: Hircinum_NJB_Text_v8. doc 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2 harbour further cryptic species; the taxonomic status of supposed outlying populations in southern Italy in particular is questioned by the present genetic data.

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“…Different cytotypes of G. conopsea often form mixed-ploidy populations (Marhold et al, 2005;Jersáková et al, 2010;Stark et al, 2011). The population that we have studied comprises only diploids (Trávníček et al, 2012). Flowers are small and pinkish or reddish lilac with a large amount of nectar in the narrow spur and a weak vanilla-like scent emitted during the day and night (Stpiczyńska and Matusiewicz, 2001;Marhold et al, 2005;Bell et al, 2009).…”

Section: Studied Speciesmentioning

confidence: 93%

The Ability of Spontaneous Autogamy in Four Orchid Species: Cephalanthera Rubra, Neottia Ovata, Gymnadenia Conopsea, and Platanthera Bifolia

Tałałaj¹,

Ostrowiecka²,

Włostowska³

et al. 2017

Acta Biologica Cracoviensia S. Botanica

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The breeding system in Orchidaceae generates many questions about the selfing potential of its representatives. We investigated the ability of spontaneous autogamy of four orchid species: Cephalanthera rubra and Neottia ovata of the Neottieae tribe and Gymnadenia conopsea and Platanthera bifolia of the Orchideae tribe. These species represent diverse specializations of the gynostemium architecture. The self-compatibility and properties of autogamous seeds were determined in a bagging experiment and seed development analysis. After induced autogamy, a high level of fruiting (80-100%) was noted in all of the four study species. C. rubra, N. ovata, and G. conopsea are completely self-compatible, and P. bifolia is suggested to be partially self-compatible. If autogamy occurred, inbreeding depression and resource limitation on seed development appeared only in the two Orchideae species. Independent of flower specialization, both Neottieae species and P. bifolia were completely allogamous, whereas G. conopsea could be facultatively autogamous.

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Minority cytotypes in European populations of the Gymnadenia conopsea complex (Orchidaceae) greatly increase intraspecific and intrapopulation diversity

Cited by 39 publications

References 40 publications

Mechanism of Spontaneous Autogamy in the Allogamous Lepidopteran Orchid Gymnadenia Conopsea (L.) R. Br. (Orchidaceae)

Mechanism of Spontaneous Autogamy in the Allogamous Lepidopteran Orchid Gymnadenia Conopsea (L.) R. Br. (Orchidaceae)

Himantoglossum hircinum(Lizard Orchid) reviewed in the light of new morphological and molecular observations

The Ability of Spontaneous Autogamy in Four Orchid Species: Cephalanthera Rubra, Neottia Ovata, Gymnadenia Conopsea, and Platanthera Bifolia

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