Article
Anatomy & Morphology
Shahzeb Ullah Khan, Muhammad Zafar, Riaz Ullah, Abdelaaty A. Shahat, Mushtaq Ahmad, Shazia Sultana, Khafsa Malik
Summary: In this study, pollen morphology of 14 mimosaceous species belonging to five genera was analyzed using light microscopy (LM) and scanning electron microscopy (SEM). Qualitative and quantitative characters were used to determine palynological features. The study identified various shapes of pollen grains and different exine sculpturing patterns, providing important morpho-palynological characters for identification and validation of related taxa within Mimosaceae family.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Biology
Azize Demirpolat
Summary: This study investigated the essential oil constituents, antimicrobial properties, and biosystematic characteristics of six Salvia species from Turkey. The chemical composition of the essential oils was analyzed, and 1,8-cineol, caryophyllene oxide, spathulenol, and borneol were found to be the main constituents. The essential oils showed different antimicrobial activity against tested microorganisms, with S. multicaulis having the highest activity against E. coli and S. verbenaca having the highest activity against K. pneumoniae. Morphological and anatomical analyses were also conducted, and the pollen grains of the Salvia species were found to be isopolar and radially symmetrical. The obtained data contribute to the bioactive and biosystematic studies of Salvia species for various purposes.
Article
Anatomy & Morphology
Izhar Ullah, Mushtaq Ahmad, Asma Jabeen, M. Osman Yusuf, Muhammad Arfan, Omer Kilic, Eyup Bagci, Muhammad Zafar, Shazia Sultana, Siraj Khan, Anwer Usma
Summary: Statistics worldwide show an increased risk of allergies related to plants, affecting 5-30% of the population in industrialized countries. This study in Islamabad, Pakistan focused on identifying allergenic grass species using microscopic techniques and analyzing their pollen morphology, finding variations in pollen features and exine ornamentation. The research aims to develop an allergenic pollen atlas by arranging pollen types and discussing various pollen characteristics.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Plant Sciences
Saraj Bahadur, Sehrish Taj, Wenxing Long, Mushtaq Ahmad
Summary: Pollen morphology of Asteraceae taxa was studied using light and scanning electron microscopy. Two main types of pollen were identified: echinolophate and echinate. The echinolophate feature was found to be the diagnostic trait of certain tribes, while the echinate feature mixed with other morphological features was found in the rest of the tribes. Aperture traits were useful for differentiating between tribes. Pollen size, spine length, density, arrangement, and number were found to be taxonomically important for discriminating species. Principal component analysis showed that spine length, polar axis, equatorial diameter, colpus length and width, P/E ratio, and inter-spinal area were useful pollen morphological traits. Overall, pollen morphology has significant taxonomic potential for identifying species boundaries at the tribe and generic levels within Asteraceae.
Article
Anatomy & Morphology
Sandra de Oliveira Souza, Rafaelle Souza de Oliveira, Lidyanne Yuriko Saleme Aona, Fernanda Vidigal Duarte Souza, Taliane Leila Soares, Monica Lanzoni Rossi, Everton Hilo de Souza
Summary: The study evaluated the morphology, production, and viability of pollen grains of 24Tillandsiaspecies in Bahia, Brazil. Results showed variations in ornamentation and size of pollen among species, with most exhibiting medium size. The majority of species had bilateral symmetry and high germination percentage and viability.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Anatomy & Morphology
Saraj Bahadur, Sehrish Taj, Wenxing Long, Mushtaq Ahmad
Summary: This study documented the pollen morphology of Euphorbiaceae taxa collected from different regions of Hainan Island, China, and found that pollen traits have relevance in the taxonomy and phylogenetic of the family.
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Article
Plant Sciences
Elena E. Severova, Svetlana V. Polevova, Sophia V. Yudina, Ba Vuong Truong, Thi Xuyen Do, Sahut Chantanaorrapint, Kenji Suetsugu, Shuichiro Tagane, Xing Guo, Mikhail I. Schelkunov, Maxim S. Nuraliev
Summary: The genus Thismia, a group of mycoheterotrophic plants, exhibits rare and unique structural and ecological traits within angiosperms. The pollen morphology of Thismia is poorly understood, with reports of porate pollen with unknown pore positions. Through a comprehensive study of nine Asian species of Thismia, it was found that they all have monoporate pollen with asymmetric-elliptic planoconvex shape. High-quality images revealed the sporoderm surface to be psilate or perforate, with varying perforation size and density.
PLANT SYSTEMATICS AND EVOLUTION
(2021)
Article
Biodiversity Conservation
Yihan Wang, Ziqi Huang, Wenxin Ma, Jiaojiao Liu, Li Tian, Yuchao Zhou, Fude Shang, Peng Guo
Summary: This study aimed to explore the palynomorphological characteristics of all extant species of the Chaenomeles genus and compare the results with phylogenetic relationships and taxonomic classification. The study found that Chaenomeles pollens have specific characteristics that can be used for diagnostic and taxonomic purposes. Additionally, an artificial key based on pollen micromorphological attributes was provided.
Article
Plant Sciences
Murat Kursat
Summary: The objective of this study is to determine the pollen morphologies of different Euphorbia L. Turkish taxa using LM and SEM. PCA and cluster analysis were also employed to examine similarity grouping. The results showed that 24 taxa have tricolporate pollen grains, while three others have tricolpate and tricolporate pollen grains. The study also found perforated pattern and ornamentations on the pollen grains. In terms of shape, six taxa had prolate-spheroidal pollen, while 20 had oblate-spheroidal pollen. The PCA explained 92.16% of the variation and the UPGMA dendrogram identified four taxonomic groupings.
Article
Plant Sciences
Birol Baser, Mehmet Sagiroglu, Gulden Dogan, Hayri Duman
Summary: The study of pollen morphology of all Ferula species in Turkey reveals that the pollen characteristics are consistent and valuable for classification. Different types of exine ornamentations were observed on pollen surfaces using scanning electron microscopy. Variables like P, E, P/E ratio, and ornamentation are crucial for discriminating Ferula species.
Article
Plant Sciences
Natalya Nosova, Maria Tekleva
Summary: This paper provides detailed documentation on the morphological and epidermal characteristics of the pollen cones and in situ pollen of Aegianthus, based on specimens from the Middle Jurassic Prisayan Formation in the Irkutsk Basin, Russia. The study presents an updated diagnosis and selects a lectotype for the type species, A. sibiricus. The existence of resin bodies in sporangiophores of A. sibiricus is reported for the first time, and the number of sporangia per sporangiophore is specified. A new species, A. irkutensis, is described from the same formation and differs from other Aegianthus species in terms of papillate outer epidermal cells and smaller resin bodies.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Plant Sciences
Natalia Zavialova, Natalya Nosova
Summary: The research focused on the morphology and ultrastructure of pollen grains from Schidolepium gracile's cones, revealing some unusual traits and suggesting the possible existence of two species within Schidolepium. The exine ultrastructure of the pollen grains excludes an affinity with the araucariaceous, despite some morphological similarities. Additionally, the presence of pollen grains contamination from Cycadopites suggests a ginkgoalean affinity, highlighting the complexity of the botanical relationships within the conifer family.
INTERNATIONAL JOURNAL OF PLANT SCIENCES
(2021)
Article
Plant Sciences
Ummugulsun Yildiz
Summary: This study investigated the pollen morphology of 23 Allium L. species grown in Turkey, belonging to different sections. The results showed that the pollen of Allium species is ellipsoidal and heteropolar, with bilateral symmetry, and is shed as monads. Characteristics such as exine sculpturing, pollen membrane ornamentation, lumina shape, and sulcus membrane with a fragmented operculum were found to be useful for species identification. Three main pollen types with different exine sculpturing were determined. SEM observations revealed striate-perforate, striate-regulate-perforate, and regulate-perforate pollen ornamentations, as well as psilate, psilate-perforate, rugulate, and regulate-perforate sulcus membrane ornamentations. The exine was semitectate with a perforate tectum, and simplicolumellate columellae were observed.
BANGLADESH JOURNAL OF PLANT TAXONOMY
(2023)
Article
Materials Science, Multidisciplinary
Haoqiang Zhang, Yu X. Xu, Yong Chen, Bin Peng, Tiefeng Wei, Fengge Zhang, Haiqing Li, Qimin Wang
Summary: The oxidation behavior of arc evaporated Al-Ti-B-N coatings was investigated. The addition of B promotes the formation of an amorphous scale and improves the oxidation resistance. The oxidation at the interface between the oxide and nitride leads to the continuous formation of an amorphous inner layer with excellent adhesion, while the crystalline outer oxide layer inhibits the inward diffusion of oxygen at elevated temperatures.
Article
Plant Sciences
Natalia Zavialova, Natalya Nosova, Eugenia Bugdaeva
Summary: This study investigated the morphology and exine ultrastructure of pollen grains from Sorosaccus sibiricus, Sorosaccus sp., and S. ex gr. sibiricus. The pollen grains were boat-shaped and monosulcate, with a finely granulate pattern on the surface. Scanning electron microscopy revealed flat verrucae, while transmission electron microscopy showed sculptural elements on the surface. Ginkgoalean pollen grains can be differentiated from similar boat-shaped monosulcate pollen by a combination of ectexinal sublayers and a greatly reduced ectexine in the aperture region.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2023)
