Use of Arbuscular Mycorrhizal Fungi for Boosting Antioxidant Enzyme Metabolism and Mitigating Saline Stress in Sweet Basil (Ocimum basilicum L.)

Abdurrahim Yilmaz (), Ertan Yildirim, Hilal Yilmaz, Hakkı Ekrem Soydemir, Emrah Güler, Vahdettin Ciftci and Mehmet Yaman
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Abdurrahim Yilmaz: Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, Turkey
Ertan Yildirim: Department of Horticulture, Faculty of Agriculture, Atatürk University, Erzurum 25240, Turkey
Hilal Yilmaz: Plant and Animal Production Program, Izmit Vocational School, Kocaeli University, Kocaeli 41285, Turkey
Hakkı Ekrem Soydemir: Department of Seed Science and Technology, Bolu Abant Izzet Baysal University, Bolu 14030, Turkey
Emrah Güler: Department of Horticulture, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, Turkey
Vahdettin Ciftci: Department of Field Crops, Faculty of Agriculture, Bolu Abant Izzet Baysal University, Bolu 14030, Turkey
Mehmet Yaman: Department of Horticulture, Faculty of Agriculture, Erciyes University, Kayseri 38030, Turkey

Sustainability, 2023, vol. 15, issue 7, 1-14

Abstract: Salinity is one of the outstanding abiotic stress conditions that a significant part of the world faces. In recent years, beneficial microorganisms started to be utilized in plants to overcome several abiotic factors, including salinity. The effects of arbuscular mycorrhizal fungi (AMF) mixture on growth and enzymatic responses in basil under salt stress were investigated using saline doses of 0 mM (Control), 150 mM, and 300 mM. Results showed that AMF enhanced all growth parameters, but only the leaf number was statistically significant. However, antioxidant enzymes, such as ascorbate peroxidase (APX) by 25%, catalase (CAT) by 25%, and superoxide dismutase (SOD) by 5%, significantly enhanced. At the same time, the accumulation of oxidative enzymes, like hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA), was reduced, from 12.05 μmol g −1 fw (control) to 11.17 μmol g −1 fw (AMF) and from 14.29 μmol g −1 fw to 10.74 μmol g −1 fw, respectively. AMF also significantly alleviated the chlorophyll loss caused by increasing saline doses. Multivariate analyses revealed the co-occurrence of stress metabolism enzymes as well as the proximate effect of AMF inoculation on basil yield and enzymatic activity. As a result, AMF was considered an appropriate tool for increasing growth and reducing salt stress under both stress-free and saline conditions.

Keywords: oxidative stress; catalase; ascorbate peroxidase; malondialdehyde; structural equational model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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