Improvements in the Biochemical Responses and Pb and Ni Phytoremediation of Lavender (Lavandula Angustifolia L.) Plants Through Funneliformis Mosseae Inoculation

Overview

Journal BMC Plant Biol

Publisher Biomed Central

Specialty Biology

Date 2023 May 12

PMID 37173650

Authors

Farzad Rasouli

Mohammad Bagher Hassanpouraghdam

Yaghoub Pirsarandib

Mohammad Ali Aazami

Mohammad Asadi

Sezai Ercisli

Lamia Vojodi Mehrabani

Ivana Puglisi

Andrea Baglieri

Affiliations

Soon will be listed here.

Abstract

Background: Heavy metals (HMs) phytoremediation is a well-recognized protocol to remove toxic elements from the soil. As known, arbuscular mycorrhizal fungi (AMF) enhance the plants' growth responses. The idea of the present study was to assay the response of lavender plants to HMs stress under AMF inoculation. We hypothesized that mycorrhiza will enhance the phytoremediation and simultaneously reduce the harmful effects of heavy HMs. So, lavender (Lavandula angustifolia L.) plants were inoculated with AMF (0 and 5 g Kg soil) under Pb [150 and 225 mg kg soil from Pb (NO)] and Ni [220 and 330 mg kg soil from Ni (NO)] pollution, in the greenhouse conditions. The control treatment was plants not treated with AMF and HMs. Doing this, the root colonization, HMs uptake, enzymatic and non-enzymatic antioxidants pool, MDA, proline, total phenolics (TPC), flavonoids (TFC), anthocyanins, and essential oil (EO) components were evaluated.

Results: According to the findings, the AMF inoculation enhanced shoot and root Pb and Ni content, antioxidant enzymes activity, the total antioxidant activity by DPPH and FRAP methods, TPC, TFC, anthocyanins, and HO content in the lavender plants subjected to Pb and Ni stress. Moreover, the highest (28.91%) and the least (15.81%) percentages of borneol were identified in the lavender plants subjected to AMF under 150 mg kg of Pb and the control plants without AMF application, respectively. Furthermore, the top 1,8-cineole (12.75%) content was recorded in AMF-inoculated plants.

Conclusions: The overall results verify that AMF inoculation can be a reliable methodology to enhance the phytoremediation of Pb and Ni by lavender plants while maintaining reliable growth potential. The treatments improved the main EO constituents content, especially under moderate HMs stress conditions. With more detailed studies, the results will be advisable for the extension section for the phytoremediation of polluted soils.

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