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You are here: Home » Latest Issue » Volume 17, 2022 - Number 1 » STRUCTURAL MODIFICATIONS IN BLACK PINE NEEDLES AS POTENTIAL BIOMARKERS OF ENVIRONMENTAL POLLUTION, Carpathian Journal of Earth and Environmental Sciences, February 2022, Vol. 17, No. 1, p. 111 – 118; DOI:10.26471/cjees/2022/017/205


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Gabriel Mihai MARIA, Cristian BANCIU*, Mihnea VLADIMIRESCU, Ioana Cătălina PAICA & Anca MANOLE
Developmental Biology Department, Institute of Biology Bucharest of Romanian Academy, 296 Splaiul Independenţei. 060031, Bucharest, Romania, *corresponding author: cristi.banciu@ibiol.ro


STRUCTURAL MODIFICATIONS IN BLACK PINE NEEDLES AS POTENTIAL BIOMARKERS OF ENVIRONMENTAL POLLUTION, Carpathian Journal of Earth and Environmental Sciences, February 2022, Vol. 17, No. 1, p. 111 – 118; DOI:10.26471/cjees/2022/017/205

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Abstract:

This study presents micro-morphological characters and anatomical modifications detected in black pine needles collected from urban polluted areas in order to propose new biomarkers useful in air pollution biomonitoring. The plant samples were collected during the July 2021 from 10 different polluted sites from Bucharest and analyzed using light and scanning electron microscopy. When compared with the samples collected from less polluted sites, needle micromorphology and structure have showed significant alterations such as injured stomatal complex, eroded forms of tubular wax type and complete degradation of wax crystalline structure, raised peristomatal areas, early wax plugs perforations and abnormal epidermal teeth. The loads of heavy metal of samples were assessed by X-ray fluorescence spectrometry and the results showed a positive correlation between structural alteration incidence and needle heavy metal surface depositions.



Keyword: air pollution, Pinus nigra, structural alterations, biomonitoring, biomarkers


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