PJB-2019-778
Physiological responses of artificial algae biocrusts to varying pH and growth regulator in the cultural media
Ling Tao
Abstract
The effects of the culture medium, pH, and a plant growth regulator on the physiological characteristics of artificially cultivated desert algae were explored under artificial culture conditions. The optimal artificial culture conditions were also investigated. The results showed that when the pH of the medium was 7.5, the malondialdehyde content was at a minimum, and the chlorophyll-a, soluble protein, and soluble sugar contents were at a maximum. This suggested that an alkaline environment was more suitable for the growth and metabolism of desert algae crusts. The optimum pH for the medium in the artificial cultivation of desert algae was 7.5. The malondialdehyde content decreased with increasing growth regulator concentration, but it increased with an increasing concentration of acetone. When the concentration of the growth regulator was 0.5 mg/L, the chlorophyll-a and soluble sugar contents were at a maximum. This suggested that the growth regulator had a regulatory effect on the growth of desert algae crusts. The optimal concentration of plant growth regulator for algae crust growth was found to be 0.5 mg/L.
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