Taxonomic Revision of<i>Euphorbia</i>subsect.<i>Myrsiniteae</i>in Iran

Pahlevani, Amirhossein; Geltman, D. V.; Riina, Ricarda

doi:10.5735/085.048.0606

Cited by 13 publications

(9 citation statements)

References 3 publications

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“…Seed can have different sizes and, above all, different shapes (ovoidal, quadrangular or strongly compressed laterally), ornamentation (smooth or vermiculate-rugulose) and color (brown or gray) ( Figure 2). Some of these species, such as E. characias, E. dendroides, E. myrsinites, and E. rigida, are characterized by interesting biotechnical and/ F I G U R E 1 Photographs of the eight Euphorbia study species or ornamental value, both for architectural shapes and fascinating foliage (La Mantia et al, 2012;Pahlevani, Geltman, & Riina, 2011;Riina et al, 2013;Sari & Karaşah, 2015).…”

Section: Introductionmentioning

confidence: 99%

Temperature and storage time strongly affect the germination success of perennial Euphorbia species in Mediterranean regions

Cristaudo

Catara

Mingo

et al. 2019

Ecology and Evolution

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This study aims to explore the effect of environmental factors (temperature, light, storage time) on germination response and dormancy patterns in eight Mediterranean native wildplants, belonging to the Euphorbia L. genus. In detail, we considered E. amygdaloides subsp. arbuscula, E. bivonae subsp. bivonae, E. ceratocarpa, E. characias, E. dendroides, E. melapetala, E. myrsinites, and E. rigida. We collected seeds from natural plant populations and performed germination assays in climatic chambers at seven constant temperatures (from 5 to 35°C, with 5°C increments), and four fluctuating temperature regimes (8/15, 8/20, 8/25, and 8/30°C, with a 12/12 hr thermoperiod). Germination assays were set up both in dark (D) and in light/dark conditions (L/D, 12/12 hr photoperiod), after short and long seed storage (SS around 30 days and LS around 150 days). For all these species, except E. amygdaloides subsp. arbuscula, results show that the final germinated proportions were improved by a long storage period (>150 days), which supports the existence of nondeep physiological dormancy. Optimal temperature levels ranged from 14.3 to 21.3°C and base temperatures ranged from 5.6 to 12.1°C, while ceiling temperatures from 25.6 to 34.7°C. For none of these species, germinations were favored by an alternating daily temperature regime, while in several instances, germinations were quicker and more complete in darkness, than in an alternating light/dark regime. In some instances, extreme temperature levels (5 and 30°C) induced dormancy and germinations did not resume when seeds were exposed at optimal temperature levels. Results are discussed in terms of the dynamics of emergences and how this might be affected by climate changes.

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Section: Introductionmentioning

confidence: 99%

Temperature and storage time strongly affect the germination success of perennial Euphorbia species in Mediterranean regions

Cristaudo

Catara

Mingo

et al. 2019

Ecology and Evolution

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“…) or on revising geographically localized species (Binojkumar & Balakrishnan ; Pahlevani & Riina ; Pahlevani et al . ) and thus contribute to an ongoing revision of the entire genus.…”

Section: Introductionmentioning

confidence: 99%

DNA barcoding in a biodiversity hot spot: potential value for the identification of Malagasy Euphorbia L. listed in CITES Appendices I and II

Aubriot

Lowry

Cruaud

et al. 2012

Molecular Ecology Resources

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The island of Madagascar is a key hot spot for the genus Euphorbia, with at least 170 native species, almost all endemic. Threatened by habitat loss and illegal collection of wild plants, nearly all Malagasy Euphorbia are listed in CITES Appendices I and II. The absence of a reliable taxonomic revision makes it particularly difficult to identify these plants, even when fertile, and thereby compromises the application of CITES regulations. DNA barcoding, which can facilitate species-level identification irrespective of developmental stage and the presence of flowers or fruits, may be a promising tool for monitoring and controlling trade involving threatened species. In this study, we test the potential value of barcoding on 41 Euphorbia species representative of the genus in Madagascar, using the two widely adopted core barcode markers (matK and rbcL), along with two additional DNA regions, nuclear internal transcribed spacer (ITS) and the chloroplastic intergenic spacer psbA-trnH. For each marker and for selected marker combinations, inter- and intraspecific distance estimates and species discrimination rates are calculated. Results using just the 'official' barcoding markers yield overlapping inter- and intraspecific ranges and species discrimination rates below 60%. When ITS is used, whether alone or in combination with the core markers, species discrimination increases to nearly 100%, whereas the addition of psbA-trnH produces less satisfactory results. This study, the first ever to test barcoding on the large, commercially important genus Euphorbia shows that this method could be developed into a powerful identification tool and thereby contribute to more effective application of CITES regulations.

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“…(Boissier, 1879; Parsa, 1949; Rechinger, 1964; Rechinger & Schiman‐Czeika, 1964; Prokhanov, 1974; Radcliffe‐Smith, 1980, 1982, 1986; Collenette, 1999; Govaerts et al ., 2000). Iran has apparently the largest number of species in south‐west Asia with more than 90, including several endemics and some undescribed species (Boissier, 1879; Rechinger & Schiman‐Czeika, 1964; Mobayen, 1979, 1984; Akhani, 2004; Pahlevani, 2007; Pahlevani, Geltman & Riina, 2011; Pahlevani & Mozaffarian, 2011).…”

Section: Introductionmentioning

confidence: 99%

Seed morphology of Iranian annual species of Euphorbia (Euphorbiaceae)

Pahlevani

Akhani

2011

Botanical Journal of the Linnean Society

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Euphorbia (Euphorbiaceae) is one of the largest and most diversified cosmopolitan genera of flowering plants. South-west Asia is a major centre of diversity and contains c. 65 annual species, 35 of which occur in Iran. In this article, the seed morphology of all Iranian annual species was studied, including E. aulacosperma and E. rhabdothosperma, both new records for Iran. Quantitative and qualitative macro-and micromorphological features of seeds and caruncles were investigated using stereomicroscopy and scanning electron microscopy. Caruncle characters (shape, size, colour) and seed characters (shape, size, colour, ornamentation) are often constant and useful in identification and classification. An identification key and scanning electron micrographs are provided for all known Iranian taxa.

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Taxonomic Revision ofEuphorbiasubsect.Myrsiniteaein Iran

Cited by 13 publications

References 3 publications

Temperature and storage time strongly affect the germination success of perennial Euphorbia species in Mediterranean regions

Temperature and storage time strongly affect the germination success of perennial Euphorbia species in Mediterranean regions

DNA barcoding in a biodiversity hot spot: potential value for the identification of Malagasy Euphorbia L. listed in CITES Appendices I and II

Seed morphology of Iranian annual species of Euphorbia (Euphorbiaceae)

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