A palynological study of the genus Mentha L. (Lamiaceae)

Çelenk, Sevcan; Tarimcilar, Gül; Bıçakçı, Adem; Kaynak, Gönül; Malyer, Hulusi

doi:10.1111/j.1095-8339.2008.00789.x

Cited by 34 publications

(21 citation statements)

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“…Colpi apices in the apocolpial area are equal in O. ayliniae, but the colpi apices in the apocolpial area differ in O. dictamnus, one being narrower than the other (Figures 7A-7D). Alternate positioning of colpi has been recorded in the genera Endostemon (Paton et al, 1994), Lycopus L. (Moon and Hong, 2003), Mentha L. (Celenk et al, 2008b), and Nepeta L. (Celenk et al, 2008a). Both allied genera have bireticulate exine ornamentation with a difference in the secondary muri wall, which is thin and strongly differentiated in O. ayliniae, but thick and weakly differentiated in O. dictamnus.…”

Section: Discussionmentioning

confidence: 99%

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

Dırmencı¹,

Yazıcı²,

Özcan³

et al. 2018

Turk J Bot

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The species of the genus Origanum L. are strongly aromatic perennial herbs and subshrubs. The Origanum species have many morphological and chemical varieties. Carvacrol, thymol, linalool, and p-cymene are some of their abundant chemical components. Origanum species are widely used as tea and herbs in folk medicine. They have antispasmodic, antimicrobial, expectorant, antioxidant, anticholinesterase, and carminative effects. (Başer and Kırımer, 2006;Yılmaz et al., 2017). Therefore, the use of Origanum plants is very common as tea, as additives to foods, and in traditional remedies for the treatment of infectious diseases and the prevention of cancer and gastrointestinal system diseases (Marrelli et al., 2010).The genus Origanum (Lamiaceae, subfamily: Nepetoideae, tribe: Mentheae, subtribe: Menthineae) comprises 43 species (51 taxa) and 15 hybrids worldwide (Ietswaart, 1980(Ietswaart, , 1982. The species are mainly concentrated in the temperate regions of the Mediterranean area. Twenty-three species (26 taxa), 8 hybrids, and one suspected species have been recorded in Turkey, which has the most species. Twenty of those are endemic (Ietswaart, 1982;Davis et al., 1988;Duman, 2000). The species are classified into eight sections: Sect. Amaracus (Gleditsch) Vogel ( 4species), Sect. Anatolicon Ietsw. (2 species), Sect. Breviflamnetum Ietsw. (7 species), Sect. Longitubus Ietsw. (1 species), Sect. Chilocalyx (Briq.) Ietsw. (3 species), Sect. Majorana (Mill.) Benth. (3 species), Sect. Origanum (1 species, 4 taxa), and Sect. Prolaticorolla Ietsw. (1 species).Origanum dictamnus L., indicated as a suspected species in the Flora of Turkey, belongs to the section Amaracus. To date, O. dictamnus has only been recorded from Crete, where it is considered endemic. An unflowered specimen from Aydın-Priene (Fors-Maj. 665) was collected and identified as O. dictamnus in the Flora of Turkey (Ietswaart, 1980(Ietswaart, , 1982. This specimen (from Aydın-Priene) was different from O. dictamnus in respect to the unbranched indumentum. However, although this specimen did not have flowers, it was reported that this specimen did not, in fact, belong to O. dictamnus (Ietswaart, 1980(Ietswaart, , 1982. Based on this note stated in the Flora of Turkey and the Eastern Aegean Islands, in order to collect new materials, a field trip was made to the environs of Priene, an ancient city on the Dilek Peninsula/Kuşadası (Figure 1). Despite covetable specimens not being collected from Priene, some

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Section: Discussionmentioning

confidence: 99%

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

Dırmencı¹,

Yazıcı²,

Özcan³

et al. 2018

Turk J Bot

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“…O tamanho do grão de pólen em várias espécies tem relação com o nível de ploidia (Raseira & Raseira, 1996). A relação positiva entre o nível de ploidia e tamanho do pólen tem sido relatada para vários gêneros de plantas poliploides, como Avena L. (Katsiotis & Forsberg, 1995), Mentha L. (Celenk et al 2008) e Lippia L. (Sousa et al 2013). Conforme Simioni et al (2004) plantas que produzem grãos de pólen com 30% a 40% de incremento no tamanho, quando comparados com grãos considerados normais, servem como um indicativo de grãos de pólen não reduzidos.…”

Section: Acessosunclassified

Estimativa da viabilidade polínica de araçazeiro (Psidium cattleianum Sabine) através de distintos métodos de coloração

Hister

Tedesco

2016

Rev. bras. plantas med.

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RESUMO:A análise histoquímica dos grãos de pólen através do uso de corantes permite a determinação de sua viabilidade polínica. O objetivo deste estudo foi comparar a eficiência dos corantes orceína acética 2% e reativo de Alexander modificado, para estimar a viabilidade polínica de vinte acessos de araçazeiro (Psidium cattleianum Sabine) -uma árvore de frutos muito apreciados que também é utilizada para fins medicinais. Botões florais na pré-antese foram coletados e fixados em etanol:ácido acético (3:1) por 24 horas, após os botões foram transferidos para etanol 70% e mantidos sob refrigeração. A técnica de esmagamento das anteras foi utilizada no preparo das lâminas. Para cada acesso foram preparadas 2 lâminas por corante e analisados 500 grãos de pólen por lâmina. A viabilidade polínica foi estimada através da porcentagem de grãos de pólen viáveis. De modo geral, observou-se que os grãos de pólen corados com orceína acética 2% apresentaram viabilidade alta, acima de 98,1%, e os acessos não diferiram entre si. A viabilidade polínica através da coloração com a solução de Alexander variou de 43% (acesso Silveira Martins 1) a 97% (acesso Candelária 1), mostrando que provavelmente exista variabilidade genética entre os acessos. Em apenas dois acessos não houve diferença significativa entre os valores de viabilidade encontrados através dos dois corantes testados. Conclui-se então que a orceína acética 2% superestimou a viabilidade polínica de P. cattleianum e que o reativo de Alexander é o mais preciso, devido a sua dupla coloração (verde de malaquita + fucsina ácida). Assim, indica-se o reativo de Alexander para análise de estimativa da viabilidade polínica de genótipos de araçá envolvidos em um programa de melhoramento genético. Palavras-chave:Araçá, orceína acética, reativo de Alexander, viabilidade polínica ABSTRACT: Estimation of pollen viability of strawberry guava (Psidium cattleianum Sabine) through distinct staining methods. The histochemical analysis of pollen grains through the use of stains makes it possible to determine their pollen viability. The purpose of this study was to compare the efficiency of 2% acetic orcein and Alexander's stain modified, in estimating the pollen viability of twenty strawberry guava accessions (Psidium cattleianum Sabine) -a valued fruit tree which is used for medicinal purposes. Pre-anthesis flower buds were collected and fixed in ethanol:acetic acid (3:1 v/v) for 24 hours at room temperature, subsequently they were stored in 70% ethanol under refrigeration. The anther squash technique was performed for slide preparation. In each accession two slides per stain and 500 pollen grains were analyzed. The pollen viability was estimated according to the percentage of viable pollen grains. Overall, it was observed that pollen grains stained with 2% acetic orcein evinced a high viability, higher than 98,1%, and the accessions did not differ. The pollen viability estimated with Alexander's stain varied from 43% (accession of Silveira Martins 1) to 97% (accession of Candelária 1), in...

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“…Investigations of pollen morphology has been essential for elaboration of the taxonomy of Lamiaceae (Erdtman 1945, Pozhidaev 1989, Abu-Asab and Cantino 1992, Moon and Hong 2003, Hong 2007, Celenk et al 2008, Moon et al 2008a, 2008b, 2008c. However, the pollen morphology of the genus Elsholtzia is not well known, and few studies have been conducted to evaluate the morphology.…”

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Systematic implications of pollen morphology in Elsholtzia (Elsholtzieae–Lamiaceae)

Jang¹,

Jeon²,

Hong³

2010

Nordic Journal of Botany

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Pollen morphology of 18 species (32 specimens) representing all three currently recognized sections of the genus Elsholtzia (Elsholtzieae–Lamiaceae) was investigated in detail using light, scanning electron and transmission electron microscopy. Elsholtzia pollen grains are small to medium in size (P=20–50 μm, E=16–45 μm), mostly prolate‐spheroidal to prolate, and rarely oblate‐spheroidal to subprolate in shape (P/E=0.95–1.46), hexacolpate (the amb more or less circular or ellipsoid) with granular aperture membranes. Three distinct types of sexine ornamentation are observed in Elsholtzia: perforate, rugulose‐bireticulate, and bireticulate. The bireticulate pattern is the most common, showing a wide range of morphological variation among species. The exine thickness varies from 1.2 to 2.5 μm. Among the present palynological data, the variability observed in sexine ornamentation of Elsholtzia could be of systematic significance. Current infrageneric classification of the genus Elsholtzia is partially congruent with pollen morphological data.

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A palynological study of the genus Mentha L. (Lamiaceae)

Cited by 34 publications

References 10 publications

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

A new species and a new natural hybrid of Origanum L. (Lamiaceae) from the west of Turkey

Estimativa da viabilidade polínica de araçazeiro (Psidium cattleianum Sabine) através de distintos métodos de coloração

Systematic implications of pollen morphology in Elsholtzia (Elsholtzieae–Lamiaceae)

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