The micromorphological investigation of pollen grains of some important allergenic plants in Kermanshah (West of Iran)

Abstract

Allergenic pollens are found in gardens, fields and green spaces around cities. In Kermanshah, located in the west of Iran, seven allergen pollen samples were collected directly from nature and studied according to the Erdtman acetolysis method by using Light Microscope (LM) and Scanning Electron Microscope (SEM). In this study, atmospheric pollens were also examined by the Durham method. The results showed that the pollen grains were small, medium, and large in terms of size, and Triporate, Pantoporate, Colpate and Tricolporate in terms of aperture. In addition, they were Striate, Perforate, Macroechinate, Microechinate, and Psilate with regard to exine ornamentation; however, the echinate type was more common. In general, Prolate to a spherical shape, mediumsized, perforate, and echinate pollen characteristics are popular in the important allergenic plants. Therefore, due to the human's manipulations in nature and also the extensive size of gardens and fields, there are many types of weeds in Kermanshah Province which are significant in terms of being allergenic.

Palyno‐morphological attributes of some selected plant species of family Asteraceae from district Dera Ismail Khan, KPK, Pakistan

“…Plant species of Asteraceae family LM and SEM observation shows that A. subulatus , C. arvensis , and L. luteoalbum have echinate pollen (Ahmad et al, 2013; Khan et al, 2020; Mallick, 2017). C. oxycantha have micro‐echinate pollen (Masoumi et al, 2019), C. arvense , L. mucronata , and P. lanceolata have echinate‐microreticulate pollen (Perveen, 1999), G. maderaspatana , E. annus , S. marianum , and V. encelioides have echinate perforate pollen (Abhivivek, Sharma, and Thakur (2021); El‐Garf & Osman, 2007; Ullah et al, 2021), C. prolifera have scabrate type of pollen grain (Meo & Khan, 2003), and E. echinatus have microechinate pollen type (Perveen, 1999; Perveen, Khan, Mansuri, & Tabassum, 2016) (Table 3). The statistics of results for spine length shows that C. arvense and V. encelioides have maximum spine length (5 μm) while minimum spine length was observed in L. mucronata (1.25 μm).…”

“…Perveen (1999) studied the exine thickness that was different from our findings (Figure 3 ) . Noteworthy alterations in the size, shape, and exine thickness of pollen were also acknowledged by Khan et al (2020), Masoumi, Fathi, Hajmoradi, and Baghaeifar (2019), Sadeq and Aliwy (2019), and Younis et al (2020). Climatic conditions of the area are responsible for these slight differences (Khouatmiani et al, 2020).…”