Pollen Morphology of Broadleaf Trees Growing in Different Health Conditions in the City of Aktobe

Abstract

The purpose of this work is to comparatively assess pollen viability of five plant species growing in different areas of the city of Aktobe, Kazakhstan (N 50Њ18¢, W 57Њ10¢). Pollen viability was assessed through iodine staining on the samples of pollen grains harvested between April and June 2017 from 100 plants of 5 species growing in the industrial zones, parks, and along highways: Ulmus laevis Pall., Ulmus pinnato-ramosa Dieck., Acer negundo L., Syringa vulgaris L., Populus tremula L. The minimum percentage of fertile pollen grains that was found in Ulmus laevis species has been detected in samples from the industrial zones, up to 68%. For Ulmus pinnato-ramosa, the minimum proportion of fertile pollen grains was 30%. For Acer negundo and Syringa vulgaris, similar trends were obtained. All plant species except Ulmus laevis (0.42) and Populus tremula (0.37) showed no relationship between the size of pollen grains and the intensity of their color change. Among all plant species under study, two (Ulmus laevis and Populus tremula) had the potential to act as model plant species and bioindicators of urban pollution. All five plant species demonstrated the highest proportion of defective pollen grains in the industrial zones, up 98%.

Comprehensive study of allergenic tree species: Palynological insights enhanced by HPLC and GC–MS profiling

“…influences, resulting in a notable abundance of teleomorphic pollen grains (Utarbayeva et al, 2021). Aesculus hippocastanum L. has also been investigated in previous studies.…”

“…The study encompassed four plant species, including an invasive one ( Acer negundo ), yet no significant differences in the results were detected. Interestingly, A. negundo thriving in industrial zones exhibited susceptibility to human‐induced influences, resulting in a notable abundance of teleomorphic pollen grains (Utarbayeva et al, 2021). Aesculus hippocastanum L. has also been investigated in previous studies.…”

Assessment of the State of the Landscaping System in the City of Aktobe, the Republic of Kazakhstan under Conditions of Man-Made Load Using Remote Sensing

“…The territory lies within the subzone of moderate-dry steppe with dark chestnut soil. Landscaping is carried out by planting artificial plantings [29]. Of the dangerous geological and hydrogeological processes and phenomena in the city and newly developed areas, the following were noted:…”

Assessment of the State of the Landscaping System in the City of Aktobe, the Republic of Kazakhstan, under Conditions of Man-Made Load Using Remote Sensing

“…The territory lies within the subzone of a moderate-dry steppe with dark chestnut soil. Landscaping is carried out by planting artificial plantings [35]. Regarding the dangerous geological and hydrogeological processes and phenomena in the city and newly developed areas, the following were noted:…”