A New Taxonomy for Epilobium angustifolium L.(Onagraceae)

Mosquin, Theodore

doi:10.2307/2805200

Cited by 72 publications

(75 citation statements)

References 6 publications

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“…Plants produce tall, narrow racemes consisting of between ten and 20 open £owers. In North America, C. angustifolium consists of diploid, triploid and tetraploid individuals (Mosquin 1966;Husband & Schemske 1998). In general, diploids are found at high latitudes and altitudes (Mosquin 1966;Flint 1980).…”

Section: (A) Study Organismmentioning

confidence: 99%

“…In North America, C. angustifolium consists of diploid, triploid and tetraploid individuals (Mosquin 1966;Husband & Schemske 1998). In general, diploids are found at high latitudes and altitudes (Mosquin 1966;Flint 1980). While diploids and tetraploids are mostly allopatric, mixed populations do occur in the zone of contact, along the Rocky Mountains.…”

Section: (A) Study Organismmentioning

confidence: 99%

“…Throughout most of their range, diploids occur at higher latitudes than tetraploids (Mosquin 1966(Mosquin , 1967. However, their ranges overlap in a narrow zone along the southern border of the boreal forest and in the northern Rocky Mountains.…”

Section: Introductionmentioning

confidence: 99%

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Constraints on polyploid evolution: a test of the minority cytotype exclusion principle

Husband

2000

Proc. R. Soc. Lond. B

219

232

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Polyploid evolution is often considered a mechanism of instant speciation; yet the establishment of rare tetraploids within diploid populations may be constrained by a frequency-dependent mating disadvantage (minority cytotype exclusion principle). I tested this hypothesis using experimental populations of Chamerion angustifolium (Onagraceae) that contained di¡erent proportions of tetraploids and diploids. Fitness, measured as total seed production over the entire £owering season, was calculated from a census of £ower number and estimates of ovule number per £ower and proportion of seed set per fruit. The ¢tness of tetraploids relative to diploids was frequency dependent, increasing from 0.4, when tetraploids were rare, to 0.7 when at 50% and 1.15 when they were in the majority (67%). This pattern exists because of a negative relationship between tetraploid frequency and seed set per fruit in diploids. Seed set in tetraploids was independent of cytotype frequency. The frequency-independent e¡ect in tetraploids re£ects higher assortative mating, partly because of non-random patterns of bee visitation. Bees visited a disproportionately high number of diploid in£orescences; however, the proportion of successive £ights between tetraploids increased above random expectations as the frequency of tetraploids decreased. These results provide the ¢rst experimental test of frequency-dependent ¢tness in diploid^polyploid mixtures and suggest an important role for more gradual, population processes governing the evolution of polyploidy in natural populations.

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Section: (A) Study Organismmentioning

confidence: 99%

Section: (A) Study Organismmentioning

confidence: 99%

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Constraints on polyploid evolution: a test of the minority cytotype exclusion principle

Husband

2000

Proc. R. Soc. Lond. B

219

232

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“…Epilobium angustifolium L. (Onagraceae), known as Fireweed or Rosebay willowherb, is widespread in the northern hemisphere and can be found at the submontane level up to the forest boundary, particularly on soils deficient in lime (Kartnig & Hoffmann-Bohm, 2007;Mosquin, 1966). In Styria (Austria), rosebay willowherb is preferably found in beating wood, in sparse forests, and in tall herb vegetation.…”

Section: Introductionmentioning

confidence: 99%

Content of phenolic compounds in wild populations ofEpilobium angustifoliumgrowing at different altitudes

Monschein

Jaindl

Buzimkić

et al. 2015

Pharmaceutical Biology

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Context: Flavonoids are regarded as essential ingredients for the anti-inflammatory activity of Epilobium angustifolium L. (Onagraceae). The metabolic profiles of medicinal plants vary aside from genetic determination due to the influence by external factors. Objectives: This study evaluates the influence of altitudinal variation on the content of flavonoids in E. angustifolium in two consecutive growing periods. Materials and methods: Aerial and herbaceous plant materials were collected at three different altitudes (800, 1000, and 1500 m) during two collection periods. Plant samples (11-13 samples per altitude and year) were extracted with methanol using accelerated solvent extraction (ASE). Identification and quantification of the constituents were achieved by chromatographic means of HPLC-PDA and LC-PDA-MS analyses. Results: Rising concentrations of flavonol 3-O-glycosides could be detected with increasing altitude. The content of the major compound, quercetin 3-O-glucuronide, ranged from 4.4 ± 2.05 (800 m) to 4.9 ± 1.03 (1000 m) and up to 6.6 ± 1.14 mg/g (1500 m). The total amount of flavonol 3-O-glycosides in 73 analyzed samples ranged from 10.7 ± 1.37 up to 17.3 ± 1.99 mg/g. Discussion: Quercetin-3-O-glucuronide can be considered as a potential marker for the increased production of flavonols in herbal parts of E. angustifolium at higher altitudinal levels. Conclusion: The study confirms that environmental factors at higher altitude result in elevated levels of flavonols in aerial plant tissues of E. angustifolium. Specific factors for influencing the flavonoid content have to be clarified in further studies.

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“…et ce, en captant une portion de la lumière, ce qui nuit à la croissance du conifère. L'Épilobe à feuilles étroites survient fréquemment après un feu car le retrait de toute compétition par le feu permet aux graines de l'Épilobe de germer, puis permet à la colonie de se former par reproduction végétative par la suite (Mosquin 1966, Wein et Bliss 1973. système racinaire de l'Érable à épis inhibe la germination des résineux (Vincent, 1965).…”

Section: La Recolonisation Et Compétition Pour La Lumièreunclassified

Dynamique de la régénération d une sapinière du Parc des Grands-Jardins ayant subi une épidémie de la tordeuse des bourgeons de l épinette et un incendie

Lemieux¹

2001

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A New Taxonomy for Epilobium angustifolium L.(Onagraceae)

Cited by 72 publications

References 6 publications

Constraints on polyploid evolution: a test of the minority cytotype exclusion principle

Constraints on polyploid evolution: a test of the minority cytotype exclusion principle

Content of phenolic compounds in wild populations ofEpilobium angustifoliumgrowing at different altitudes

Dynamique de la régénération d une sapinière du Parc des Grands-Jardins ayant subi une épidémie de la tordeuse des bourgeons de l épinette et un incendie

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