Systematic Importance of Pollen Morphology of Some Plants of (Lamiaceae)

Azzazy, Mohamed

doi:10.19071/cb.2016.v7.3029

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…Lamiaceae (order Lamiales) is a family of flowering species, also known as the mint family [1]. The taxonomy rank is composed of 236 genera and 6900-7200 species, distributed all over the world [2].…”

Section: Introductionmentioning

confidence: 99%

“…The taxonomy rank is composed of 236 genera and 6900-7200 species, distributed all over the world [2]. Lamiaceae is divided in 12 subfamilies [3] of which Nepetoidae is one of the most clearly defined [4] and has strongly aromatic species with volatile terpenoids [1].…”

Section: Introductionmentioning

confidence: 99%

“…Volatile chemical composition (by headspace solid phase microextraction, HS-SPME) of flowers from the studied Lamiaceae species (n = 3)1 . Cont.…”

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confidence: 99%

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Bioactive Compounds and Aroma Profile of Some Lamiaceae Edible Flowers

Marchioni

Najar

Ruffoni

et al. 2020

Plants

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Edible flowers are consumed for their appearance, colours, nutritional and healthy properties, but the use is limited by the actual number of the species. Seven edible flowers of the Lamiaceae family (Ocimeae and Mentheae tribes) were investigated: Monarda didyma ‘Fireball’, Nepeta × faassenii ‘Six Hills Giant’, Ocimum basilicum ‘Blue Spice’, O. basilicum ‘Cinnamon’, Ocimum × citriodorum, Salvia discolor, and Salvia microphylla ‘Hot Lips’. Total soluble sugars, proteins, polyphenols, carotenoids, ascorbic acid and antioxidant activity were detected. The species of the Mentheae tribe contained higher sugar content than Ocimeae flowers, the opposite with regard to protein content. Ocimeae tribe flowers showed high polyphenols and carotenoids content. The Ocimeae tribe together with two specie of the Mentheae tribe showed an aroma profile dominated by sesquiterpene hydrocarbons (58.0% in S. discolor to 77.9% in Ocimum × citriodorum). Oxygenated monoterpenes prevailed in Nepeta and Monarda, also present in the essential oil of this latter species (84.5%). By contrast, Nepeta and S. discolor evidenced non-terpenes as the principal class (41.2% and 77.5%, respectively), while the oxygenated sesquiterpene was the main one in S. microphylla. The two varieties of Ocimum spp. showed oxygenated monoterpenes as the main class of volatiles.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioactive Compounds and Aroma Profile of Some Lamiaceae Edible Flowers

Marchioni

Najar

Ruffoni

et al. 2020

Plants

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Taxonomic study of subfamily Nepetoideae (Lamiaceae) by polynomorphological approach

Gul

Ahmad

Zafar

et al. 2019

Microscopy Res & Technique

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The present study is insight into pollen morphology for characterizing species and their utility in the taxonomic separation of certain taxa of subfamily Nepetoideae (Lamiaceae) from Pakistan.The pollen micromorphology of 11 species of the Nepetoideae was analyzed and documented using light microscopy and scanning electron microscopy (SEM) for both qualitative and quantitative characteristics. Most species have hexazonocolpate pollen grains but trizonocolpate and tetrazonocolpate pollen with circular and oval amb were also rarely observed in Mentha spicata.The basic pollen shape in most of the studied species was subspheroidal but prolate grains were also observed in M. spicata, S. coccinea, and S. plebeia. The exine sculpturing of Nepetoideae pollen was taxonomically very informative particularly at subfamily level. Observations of exine sculpturing with SEM revealed various types of pollen grains: reticulate, bireticulate, microreticulate, perforate, aerolate, and gammate. The bireticulate type further subdivided into three subtypes based on the number of secondary lumina in each primary lumen and is characterized by varying characteristics of the secondary reticulum and primary muri. A significant variation was observed in colpus surface ornamentation. The maximum polar diameter was found in O. americanum (58 ± 5.8 μm) and the maximum equatorial diameter observed in O. basilicum (50.25 ± 1.37 μm). Pollen features of the studied species were discussed and compared based on the current taxonomical concepts. The results showed that pollen traits of the subfamily Nepetoideae was found significant to classify the taxa. Furthermore, pollen features provide additional evidence to distinguish macromorphologically similar taxa from each other. K E Y W O R D S micromorphology, Nepetoideae, pollen, SEM, taxonomic significance

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