1
|
Iqbal S, Ummara U, Noreen S, Akhter MS, Jaleel F, Jabeen S, Naz N, Wahid A, Alotaibi MO, Nour MM, Al-Qthanin RN, Aqeel M. Enhancing systematic tolerance in Bermuda grass (Cynodon dactylon L.) through amplified alkB gene expression and bacterial-driven hydrocarbon degradation. Environ Sci Pollut Res Int 2024; 31:19871-19885. [PMID: 38368297 DOI: 10.1007/s11356-024-32326-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/30/2024] [Indexed: 02/19/2024]
Abstract
This study aimed to access the impact of soil polluted with petroleum (5, 10 g petroleum kg-1 soil) on Bermuda grass (Cynodon dactylon L.) with and without applied bacterial inoculants (Arthrobacter oxydans ITRH49 and Pseudomonas sp. MixRI75). Both soil and seed were given bacterial inoculation. The evaluated morphological parameters of Bermuda grass were fresh and dry weight. The results demonstrated that applied bacterial inoculants enhanced 5.4%, 20%, 28% and 6.4%, 21%, and 29% shoot and root fresh/dry weights in Bermuda grass under controlled environment. The biochemical analysis of shoot and root was affected deleteriously by the 10 g petroleum kg-1 soil pollution. Microbial inoculants enhanced the activities of enzymatic (catalase, peroxidase, glutathione reductase, ascorbate peroxidase, superoxide dismutase) and non-enzymatic (ɑ-tocopherols, proline, reduced glutathione, ascorbic acid) antioxidant to mitigate the toxic effects of ROS (H2O2) under hydrocarbon stressed condition. The maximum hydrocarbon degradation (75%) was recorded by Bermuda grass at 5 g petroleum kg-1 soil contamination. Moreover, bacterial persistence and alkane hydroxylase gene (alkB) abundance and expression were observed more in the root interior than in the rhizosphere and shoot interior of Bermuda grass. Subsequently, the microbe used a biological tool to propose that the application of plant growth-promoting bacteria would be the most favorable choice in petroleum hydrocarbon polluted soil to conquer the abiotic stress in plants and the effective removal of polyaromatic hydrocarbons in polluted soil.
Collapse
Affiliation(s)
- Sehrish Iqbal
- Department of Environmental Science, The Women University Multan, Multan, Pakistan
| | - Ume Ummara
- Department of Botany, The Islamia University of Bahawalpur, Rahim Yar Khan Campus, Bahawalpur, Pakistan
| | - Sibgha Noreen
- Institute of Botany, Bahauddin Zakariya University, Multan, Pakistan
| | | | - Farrukh Jaleel
- Department of Chemistry, The Islamia University of Bahawalpur, Rahim Yar Khan Campus, Bahawalpur, Pakistan
| | - Shazia Jabeen
- Department of Environmental Science, The Women University Multan, Multan, Pakistan
| | - Nargis Naz
- Department of Botany, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Abdul Wahid
- Department of Environmental Science, Bahauddin Zakariya University, Multan, Pakistan
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
| | - Mudawi M Nour
- Nurseries Department, Habitat Regeneration and Landscaping, Wildlife and Natural Heritage, Royal Commission for AlUla, Saudi Arabia
| | - Rahmah N Al-Qthanin
- Prince Sultan Bin-Abdul-Aziz Center for Environment and Tourism Studies and Researches, King Khalid University, P.O. Box 960, 61421, Abha, Saudi Arabia
- Biology Department, College of Sciences, King Khalid University, Abha, Saudi Arabia
| | - Muhammad Aqeel
- State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystem, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, China.
| |
Collapse
|