Effects of organic molecules from biochar-extracted liquor on the growth of rice seedlings

Formulation of a Highly Effective Inoculant for Common Bean Based on an Autochthonous Elite Strain of Rhizobium leguminosarum bv. phaseoli, and Genomic-Based Insights Into Its Agronomic Performance

“…Interestingly, this was not accompanied with an increase either in the Ndfa (%), N-fixed in kg ha −1 , nodule number, or nodule biomass compared to the other formulations used in the experiment. Thus, the improvement in field performance of the PB formulation suggests that it is related to the plant growth promoting effect assigned to biochar (Yang et al, 2019), rather than to a direct effect on the strain performance as a consequence of the formulation. The plant growth promoting effect of biochar can be explained in terms of hormone analogs contained within it (Graber et al, 2010), inducing the expression of certain genes related to plant growth (Huang et al, 2015;Mehari et al, 2015;Yang et al, 2019).…”

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“…However, the molecules could induce the L-histidine biosysthesis of E. coli at a rate 17.3% higher than that of the control group (r = 0.756, p = 0.005). Therefore, this experiment shows that the molecules may play roles as hormone analogs, which affect plant growth, microbial structure, and the concentrations of metabolic substances (Yang et al, 2015(Yang et al, , 2019. Therefore, organic compounds warrant consideration in the research field of biochar.…”

“…Biochar (1.5 g) was homogenized with 100 mL non-polar organic solvents (heptane and hexane) or polar organic solvents (methanol, ethanol, acetonitrile, chloroform, ethyl acetate, and dichloromethane). The analysis procedure was performed according to a previous study (Yang et al, 2019). The ionization efficiency and the MS response were periodically tested by 1 µL mL −1 IPA (1,000 µL mL −1 in methylene) as certified reference material (Profumo et al, 2020) in order to assure the quality of related data.…”

“…Current research suggests that biochar can provide a suitable environment for plants and microorganisms (Yang et al, 2015). The most notable functions of biochar are (1) sorption in both organic and inorganic compounds, (2) changing the cation exchange capability, (3) providing hormone analogs for plants, (4) altering soil pH, and (5) providing a place and irritant substance for microbial growth (Chan et al, 2007;Yang et al, 2019;Hong et al, 2020). Biochar contains several organic compounds with various biological functions.…”

“…Biochar contains several organic compounds with various biological functions. For example, 2-Acetyl-5-methylfuran from biochar can promote rice seedling growth by playing the role of a hormone analog (Yang et al, 2019). Moreover, Yuan et al (2017) reported that organic molecules from biochar, including 14 candidate compounds, have a positive effect on the cold tolerance of rice seedlings.…”