Antioxidant response in arbuscular mycorrhizal fungi inoculated wetland plant under Cr stress

0542661 - BÚ 2022 RIV US eng J - Journal Article
Hu, S. - Hu, B. - Chen, Z. - Vosátka, Miroslav - Vymazal, J.
Antioxidant response in arbuscular mycorrhizal fungi inoculated wetland plant under Cr stress.
Environmental Research. Roč. 191, DEC 2020 (2020), č. článku 110203. ISSN 0013-9351. E-ISSN 1096-0953
Institutional support: RVO:67985939
Keywords : reactive oxygen species * water depths * wetland plants
OECD category: Ecology
Impact factor: 6.498, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.envres.2020.110203

Arbuscular mycorrhizal fungi (AMF) provide a positive effect on antioxidant mechanisms in terrestrial plants under heavy metal stress. This study investigated the effects of AMF on wetland plant (Iris wilsonii) growth and antioxidant response under Cr stress at different water depths. Results showed that AMF inoculated I. wilsonii had higher antioxidant response than non-inoculated controls, with shoot superoxide dismutase (SOD), root SOD, shoot peroxidase (POD), and root POD contents increased by 4.7-39.6%, 7.5-29.5%, 11.2-68.6%, 16.8-50.3%, respectively. Meanwhile, shoot (root) proline, malondialdehyde (MDA) and superoxide anion (OZ) contents in the AMF inoculated I. wilsonii were 10.2-44.3% (2.8-37.2%), 11.5-35.4% (16.9-28.2), and 14.9-30.5% (-0.926.3%) lower than those in the non-inoculated controls, respectively. Besides, AMF improved the growth of I. wilsonii with biomass, height, chlorophyll, K, and P contents in the shoots increased by 10.5-32.5%, 17.4-44.9%, 4.7-37.7%, 12.0-30.7%, 13.5-20.6%, respectively. Moreover, the I. wilsonii tolerance to Cr stress was also enhanced under the water depth of 6-3 cm. Therefore, AMF play an important role in wetland plant growth and antioxidant response under Cr stress, and it can improve wetland plants' tolerance to Cr stress at fluctuating water depth.
Permanent Link: http://hdl.handle.net/11104/0320034