Effects of H2S and rhizobia on the shoot and root biomass, chlorophyll content, and leaf relative water content (RWC) under water deficiency condition
As shown in Fig. 1A-C, compared with control, Q8 and Q8+NaHS treatments substantially increased the shoot and root biomass of soybean under the three water conditions. With the decrease of water content, the shoot and root biomass were appreciably reduced by Q8 and Q8+NaHS treatments plants, but were not obviously changed by control and NaHS treatments plants (Fig. 1A-C). Similarly, the chlorophyll content was remarkably increased by Q8 and Q8+NaHS treatments compared with the control and NaHS treatments under the three water conditions, and showed a slight increasing trend in all treatments with the decrease of water content (Fig. 1D). In addition, with the decrease of water content, the RWC of the four treatments had different levels of reduction, but no matter what water content, Q8 and Q8+NaHS treatments were remarkably higher than other two treatments (Fig. 1E).