Role of MYB36 and TSC10a Genes in Heavy Metal Stress in Certain Roadside Plant Species Exposed to Air Pollutants in the Jeddah Governorate, Kingdom of Saudi Arabia | ||
| Egyptian Journal of Botany | ||
| Articles in Press, Accepted Manuscript, Available Online from 18 November 2025 | ||
| Document Type: Regular issue (Original Article) | ||
| DOI: 10.21608/ejbo.2025.360599.3195 | ||
| Author | ||
| Thorya A. Fallatah* | ||
| Department of Biological Science, College of Science, University of Jeddah, Jeddah 21959, Kingdom of Saudi Arabia | ||
| Abstract | ||
| One of the significant environmental issues we face today is heavy metal (HM) pollution. HMs pose serious threats to human health, with the potential to cause severe and even life-threatening conditions. This study analyzed the expression of genes associated with HM uptake, specifically MYB36 and TSC10a, in the leaves of eight plant species from polluted street areas in the Jeddah Governorate. In this region, the main sources of air pollution are traffic, and vehicular emissions include Azadirachta indica, Senna sulfurea, Ziziphus spina-christi, Cordia sebestena, Tecoma stans, Bougainvillea spectabilis, Conocarpus lancifolius, and Ixora coccinea were the plant species studied. Gene expression analysis in the leaves of these plants was performed using real-time quantitative polymerase chain reaction (RT-qPCR). The results indicated that the expressions of MYB36 and TSC10a were highly upregulated in B. spectabilis; in contrast, the expression of MYB36 was downregulated in C. sebestena, C. lancifolius, and I. coccinea. The expression patterns of the studied genes suggest their key role in enhancing HM tolerance. This study revealed the link between gene expression regulation and HM tolerance via comparative analysis of eight different species, aiding in the determination of the best-cultivated plant species for reducing air pollution. | ||
| Keywords | ||
| Air pollution; Heavy metals; MYB36 gene; RT-qPCR; Street plants; TSC10a gene | ||
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