Soil microbe inoculation alters the bacterial communities and promotes root growth of Atractylodes lancea under heat stress

Drought stress modifies the community structure of root-associated microbes that improve Atractylodes lancea growth and medicinal compound accumulation

“…The GSM improved medicinal compound accumulation in A. lancea root but was susceptible to PEG6000 stress inhibition Under normal growth conditions, the GSM inoculation generally improved the accumulation of the four major volatile medicinal compounds, namely atractylon, b-eudesmol, atractylon and atractylodin (Figures 2F-I). Unlike in our previous study looking at the effects of GSM inoculation on A. lancea under heat stress we did not observe increased hinesol accumulation (Figure 2F) (Wang et al, 2022). Interestingly, without GSM inoculation water deficiency stress did not alone induce increases in any of the four compounds, in the way heat stress did for b-eudesmol (Wang et al, 2022).…”

“…Unlike in our previous study looking at the effects of GSM inoculation on A. lancea under heat stress we did not observe increased hinesol accumulation (Figure 2F) (Wang et al, 2022). Interestingly, without GSM inoculation water deficiency stress did not alone induce increases in any of the four compounds, in the way heat stress did for b-eudesmol (Wang et al, 2022). This suggests that the metabolism of each compound is differentially impacted by distinct environmental factors.…”

“…Collectively, to apply microbes on cultivated A. lancea is a potentially powerful solution to the current difficulties faced by A. lancea farming. Indeed, in a previous study, we found that the local soil microbes of the Geo-authentic A. lancea habitat could promote the accumulation of the four major medicinal compounds in the A. lancea root while rendering the A. lancea plantlets tolerant to heat stress (Wang et al, 2022). In the current study, we investigated the impact of the local soil microbes from a Geoauthentic A. lancea habitat on the fitness and medicinal compound accumulation of A. lancea under water deficiency stress, and how A. lancea and the soil microbes interacted symbiotically.…”

Maize intercropping enriches plant growth-promoting rhizobacteria and promotes both the growth and volatile oil concentration of Atractylodes lancea

“…To measure soil total nitrogen (TN), total phosphorus (TP), and total kalium (TK), the soil samples were dried indoors by airflow, cleaned by removing the fine roots, and passed through a 0.25 mm soil sieve ( Wang et al., 2022 ). The total organic carbon (TOC) was measured using the kalium dichromate external heating method.…”

Overview of biofertilizers in crop production and stress management for sustainable agriculture

“…Paraburkholderia phytofirmans having ACC deaminase-producing efficiency helps in normal growth of tomato plants under heat stress as reported by Esmaeel et al ( 2018 ). Bacterial inoculants such as Rhodococcus and Burkholderia protect the medicinal plant Atractylodes lancea from heat stress and improved their growth via enriched root-associated microbes (Wang et al, 2022a ).…”