Influence of arbuscular mycorrhizal fungi on selenium uptake by winter wheat depends on the level of selenate spiked in soil. (March 2022)

• Record Type: Journal Article
• Authors: Li, Jiao; Liu, Ruifang; Wu, Bingyan; Zhang, Chuangye; Wang, Jinfeng; Lyu, Lihui; Tong, Xiaogang; Wu, Fuyong
• Is Part Of: Chemosphere. Volume 291:Part 2(2022)
• Publication Date: 2022-03
• Subjects: Arbuscular mycorrhizal fungi -- Se uptake -- Se fraction -- Sulfate transporter -- Winter wheat; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2021.132813
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Selenium (Se) deficiency has been a public health concern for years. Arbuscular mycorrhizal fungi (AMF) play an essential role in improving Se uptake in crops, but related mechanisms still remain unclear. To explore the influence of AMF on uptake of Se in winter wheat, a pot experiment was conducted to inoculate wheat with Funneliformis mosseae ( F.m ) or not under different levels of selenate in soil. The present results indicated that inoculation of F.m significantly ( p < 0.05) increased Se concentration in shoots and roots of wheat under low level of selenate (≤5.0 mg kg −1 ) treatments, while the contrary pattern was recorded under high level of selenate (15 and 20 mg kg −1 ) treatments. Moreover, inoculation of F.m significantly increased concentration of available Se in soil by 4.68–34.05%. Under selenate ≤5 mg kg −1 treatments, the expression of TaeSultr1;1 and TaeSultr1;3 in roots of mycorrhizal wheat was significantly up-regulated by 3.06–5.53 and 0.63–5.12 times, while reached saturation under selenate >5 mg kg −1 treatments. In addition, partial least squares path modeling (PLS-PM) showed that inoculation of AMF directly affected the expression of sulfate transporter and that both sulfate transporter and soil Se fractions played a significant positive effect on plant Se content. The present study indicated that AMF on Se concentration in winter wheat depends on the level of selenate spiked in soil and added to our understanding of the functions and applications of AMF on crop Se absorption. Graphical abstract: Image 1 Highlights: Effect of F.m on uptake of Se in wheat depended on levels of selenate spiked in soil. F.m significantly ( p < 0.05) increased Se utilization efficiency, especially under low level of selenate treatments. Expression of TaeSultr1;1 and TaeSultr1;3 in roots depended on inoculation of F.m and levels of selenate in soil.