Synergistic effect of β-sitosterol and biochar application for improving plant growth of Thymus vulgaris under heat stress.

Autor: Alharbi K; Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia., Khan AA; Department of Plant Biology and Ecology, Nankai University, Tianjin, 300071, China., Sakit Alhaithloul HA; Biology Department, College of Science, Jouf University, Sakaka, 2014, Saudi Arabia., Al-Harbi NA; Biology Department, University College of Tayma, University of Tabuk, Tabuk, 47512, Saudi Arabia., Al-Qahtani SM; Biology Department, University College of Tayma, University of Tabuk, Tabuk, 47512, Saudi Arabia., Aloufi SS; Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr, Yanbu, 46429, Saudi Arabia., Abdulmajeed AM; Biology Department, Faculty of Science, University of Tabuk, Umluj, 46429, Tabuk, Saudi Arabia., Muneer MA; College of Resources and Environment, International Magnesium Institute, Fujian Agriculture and Forestry University, Fuzhou, 350002, China., Alghanem SMS; Department of Biology, College of Science, Qassim University, Saudi Arabia., Zia-Ur-Rehman M; Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38000, Punjab, Pakistan. Electronic address: ziasindhu1399@gmail.com., Usman M; Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, 38000, Punjab, Pakistan., Soliman MH; Biology Department, Faculty of Science, Taibah University, Al-Sharm, Yanbu El-Bahr, Yanbu, 46429, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt. Electronic address: hmona@sci.cu.edu.eg.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2023 Nov; Vol. 340, pp. 139832. Date of Electronic Publication: 2023 Aug 15.
DOI: 10.1016/j.chemosphere.2023.139832
Abstrakt: Climate change has become the global concern due to its drastic effects on the environment. Agriculture sector is the backbone of food security which remains at the disposal of climate change. Heat stress is the is the most concerning effect of climate change which negatively affect the plant growth and potential yields. The present experiment was conducted to assess the effects of exogenously applied β-sitosterol (Bs at 100 mg/L) and eucalyptus biochar (Eb at 5%) on the antioxidants and nutritional status in Thymus vulgaris under heat stressed conditions. The pot experiment was conducted in completely randomize design in which thymus plants were exposed to heat stress (33 °C) and as a result, plants showed a substantial decline in morpho-physiological and biochemical parameters e.g., a reduction of 59.46, 75.51, 100.00, 34.61, 22.65, and 38.65% was found in plant height, shoot fresh weight, root fresh weight, dry shoot weight, dry root weight and leaf area while in Bs + Eb + heat stress showed 21.16, 56.81, 67.63, 23.09, 12.84, and 35.89% respectively as compared to control. In the same way photosynthetic pigments, transpiration rate, plant nutritional values and water potential increased in plants when treated with Bs and Eb in synergy. Application of Bs and Eb significantly decreased the electrolytic leakage of cells in heat stressed thymus plants. The production of reactive oxygen species was significantly decreased while the synthesis of antioxidants increased with the application of Bs and Eb. Moreover, the application Bs and Eb increased the concentration of minerals nutrients in the plant body under heat stress. Our results suggested that application of Bs along with Eb decreased the effect of heat stress by maintaining nutrient supply and enhanced tolerance by increasing the production of photosynthetic pigments and antioxidant activity.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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