Positive effects of Funneliformis mosseae inoculation on reed seedlings under water and TiO2 nanoparticles stresses

• Published in: World journal of microbiology & biotechnology 2019-06, Vol.35 (6), p.1-13, Article 81
• Main Authors: Xu, Zhouying, Wu, Yang, Xiao, Zong, Ban, Yihui, Belvett, Norville
• Format: Article
• Language: English
• Subjects: Absorption; Accumulation; Amino acids; Antioxidants; Applied Microbiology; Aquatic habitats; Aquatic plants; Arbuscular mycorrhizas; Biochemistry; Biomedical and Life Sciences; Biotechnology; Chlorophyll; Contaminants; Drought; Environmental Engineering/Biotechnology; Enzymatic activity; Enzymes; Flooding; Fungi; Funneliformis mosseae; Host plants; Inoculation; Life Sciences; Malondialdehyde; Microbiology; Microorganisms; Moisture content; Nanomaterials; Nanoparticles; Nanotechnology; Nutrients; Nutrition; Original Paper; Plant growth; Plant nutrition; Proline; Reactive oxygen species; Reeds; Seedlings; Soil conditions; Soil contamination; Soil microorganisms; Soil moisture; Titanium dioxide; Water content
• ISSN: 0959-3993; 1573-0972
• DOI: 10.1007/s11274-019-2656-3

TiO 2 nanoparticles (TiO 2 NPs) is one of the most widely used nanomaterials. Arbuscular mycorrhizal fungi (AMF) are an important and widely distributed group of soil microorganisms, which promote the absorption of nutrients by host plants and increase their tolerance to contaminants. However, the effects and mechanisms of AMF on plant TiO 2 NPs tolerance in wetland habitats are not clear. In this experiment, under the conditions of three soil moisture contents (drought 50%, normal 70% and flooding 100%) and four TiO 2 NPs concentrations (0, 100, 200 and 500 mg kg −1 ), the effects of Funneliformis mosseae on the growth, antioxidant enzyme activities, osmotic substances and the absorption and accumulation of Ti in the Phragmites australis (reed) seedlings were studied. The results showed that the inoculation of F. mosseae under three moisture content conditions significantly increased the plant nutrition and root activities of reeds. Compared with the non-inoculated control, inoculation with F. mosseae increased the activities of antioxidant enzymes, the contents of chlorophyll, proline, soluble protein, and free amino acids, and significantly reduced the contents of malondialdehyde (MDA) and reactive oxygen species (ROS) of leaves. The accumulating ability of inoculated reeds to Ti was significantly higher than that of non-inoculated controls ( P