Pollen morphology of some selected species of the genus Centaurea L. (Asteraceae) from Syria

Joujeh, Ruba; Zaid, Salim; Mona, S.

doi:10.1016/j.sajb.2019.07.040

Cited by 21 publications

(22 citation statements)

References 11 publications

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“…According to Bıyıklıoğlu et al 2018, the exine sculpture is microechinate in C. iberica and pollen shape is subprolate, P mean is 34.8; E mean is 30. Joujeh et al (2019) studied pollen of some Centaurea species from Syria and one of them is C. iberica. According to their data the polar axis is 33.86 μm and the equatorial diameter is 31.86 μm in C. iberica.…”

Section: Discussionmentioning

confidence: 99%

Türkiye’den 5 Centaurea L. ve 3 Psephellus Cass. Taksonunun Polen Morfolojileri

Gürdal¹,

Özhatay

2019

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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In this study, pollen morphology of 5 Centaurea (C. antitauri, C. coronopifolia, C. iberica, C. patula, and C. pterocaula) and 3 Psephellus (P. hypoleucus, P. pulcherrimus, and P. simplicicaulis) species distributed in Turkey have been examined based on the exine structure and sculpturing. Previous papers drew attention to great value of pollen morphology in the taxonomy of Centaurea and divided genus from Centaurea as Rhaponticoides, Psephellus and Cyanus. Pollen grain characters of 8 species were investigated by light microscope (LM). For morphological analysis, pollen grains were prepared according to Wodehouse (1935). Voucher specimens are deposited in the ISTE (Herbarium of Faculty of Pharmacy, Istanbul University). Types of pollen grains are tricolporate, isopolar and tectum complete of all specimens studied. The largest pollen in Psephellus hypoleucus whereas the smallest pollen in Centaurea iberica. The exine sculptures in the rest of the examined specimens are scabrate, microechinate or reticulate. The polar axis (P) ranges from 32.78±1.805 μm to 40.42±1.976 μm in studied Centaurea species and 36.76±0.8109 μm to 40.5±1.3092 μm in studied Psephellus species. The equatorial axis ranges from 30.77±1.43 μm to 39.20±0.632 μm in studied Centaurea species and 37.4878±2.1313 μm to 40.5789±1.7566 μm in studied Psephellus species. All of the morphological parameters investigated are given in detailed. Pollen shape of 8 species, which are we have been studied, is the same shape but their sizes are different. And there are some differences on the exine surface (sculpture). In the taxonomy pollen type gives an idea for these genera and it is also better to combine it with morphological, karyological and molecular data.

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Section: Discussionmentioning

confidence: 99%

Türkiye’den 5 Centaurea L. ve 3 Psephellus Cass. Taksonunun Polen Morfolojileri

Gürdal¹,

Özhatay

2019

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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“…Morphology of pollens and achenes of the species in Asteraceae has taxonomic significance and sometimes was used to identify similar species (Biyiklioğlu et al 2018;Joujeh et al 2020;Nurgül et al 2021). The micromorphology of achenes and pollen grains of Ixeridium dimorphifolium and I. beauverdianum was shown in Figure 7 and Table 2.…”

Section: Key To the Species Ofmentioning

confidence: 99%

Two new species and a new combination from Zhejiang, East China

Lu¹,

Xu²,

Xie³

et al. 2021

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As the supplement of the flora of Zhejiang, East China, two new species were described with illustrations. Cerastium huadingense Y.F.Lu, W.Y.Xie & X.F.Jin (Caryophyllaceae) differs from C. qingliangfengicum in having sterile stems absent, leaves sessile, petals slightly longer than sepals, and stamens slightly shorter than sepals. Ixeridium dimorphifolium Y.L.Xu, Y.F.Lu & X.Cai (Asteraceae) differs from I. beauverdianum in having plant stoloniferous, basal leaves dimorphic, involucre 8‒10 mm long, inner phyllaries 8, and florets 7‒10. Paraphlomis setulosa C.Y.Wu & H.W.Li (Lamiaceae) was reviewed and morphological characters of the corolla and stamens of its type and the specimens collected in the field survey were critically examined. With barbate anthers and strongly divergent anther cells, Paraphlomis setulosa was transferred to Sinopogonanthera, and S. setulosa (C.Y.Wu & H.W.Li) H.W.Zhang & X.F.Jin was consequently combined.

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“…One of the more promising and environmentally safe preparations comprises components based on plant raw materials—biologically active plant extracts with inhibitory and/or biocidal effects against phytopathogens. Wild species of the Asteraceae family, one of the largest and most important plant families, are of particular interest for use as a source of active ingredients [ 1 , 2 ]. Currently, the family has 32,913 recognized species divided into 1911 genera in 13 subfamilies [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…The biological activity of extracts and essential oils of different types of Centaurea L. has been established, and includes antitumor, antidiabetic, anti-inflammatory, analgesic, antidepressant, antiplasmoid, antirheumatic, antioxidant, antimicrobial, and enzymatic properties [ 1 , 2 , 4 , 5 , 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of the Phytochemical Composition and Biological Activity of Extracts of Flowering Plants of Centaurea cyanus L., Centaurea jacea L. and Centaurea scabiosa L.

Sharonova

Nikitin

Terenzhev

et al. 2021

Plants

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The data on the phytochemical composition and biological activity for flowering plant extracts of the genus Centaurea (Knapweed)—cornflower (Centaurea cyanus L.), brown knapweed (Centaurea jacea L.), and greater knapweed (Centaurea scabiosa L.), which are typical representatives of the flora in the middle belt of the Russian Federation, were obtained. For the first time, biologically active substances such as pyranone, coumaran (2,3-dihydrobenzofuran), and 5-hydroxymethylfurfural were identified in ethanol and methanol extracts of Centaurea scabiosa L. by gas chromatography–mass spectrometry. Catechol and α-amyrin were the major components of the ethanol extract from Centaurea cyanus L., and flavone was the major component of Centaurea jacea L. flower extract. The greatest antimicrobial activity against phytopathogens was detected in Centaurea scabiosa L. when extracting freshly harvested flower biomass with methyl tert-butyl ether at room temperature: the minimum inhibitory concentrations were 60–120 µg/mL, the minimum fungicidal concentration was 120 µg/mL, and the minimum bactericidal concentration was 250 µg/mL. The low antioxidant activity of the studied plant extracts was established using the maximum values of Centaurea jacea L. Ethanol extract of Centaurea cyanus L. flowers had low antimicrobial and antioxidant activity. The extracts showed no phytotoxicity to garden cress germination but inhibited the growth of juvenile plants, especially roots. The greatest phytotoxic effect was revealed with methyl tert-butyl ether, where the depression of growth indicators was 35% or more.

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Pollen morphology of some selected species of the genus Centaurea L. (Asteraceae) from Syria

Cited by 21 publications

References 11 publications

Türkiye’den 5 Centaurea L. ve 3 Psephellus Cass. Taksonunun Polen Morfolojileri

Türkiye’den 5 Centaurea L. ve 3 Psephellus Cass. Taksonunun Polen Morfolojileri

Two new species and a new combination from Zhejiang, East China

Comparative Assessment of the Phytochemical Composition and Biological Activity of Extracts of Flowering Plants of Centaurea cyanus L., Centaurea jacea L. and Centaurea scabiosa L.

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