PJB-2021-594
EFFECTS OF SALINE-ALKALI STRESS ON THE MYCELIAL GROWTH OF MORCHELLA SEXTELATA
Jing Sun
Abstract
There are a large number of saline-alkali soil tidal flats globally. This soil is not conducive for ordinary plant growth and is in a state of waste. Morchella is the only native fungus that can be cultivated in a large area presently. This experiment shows that Morchella is superior to the salt and alkali tolerance of plants, thus having a higher research value. This study was conducted to compare the effects of different pH and salinity values on mycelium length, growth rate, vigour, indices, membrane permeability, and biomass in Morchella sextelata. Saline-alkaline tolerance was established by subjecting the fungus to variable salt and alkali levels. We found that Morchella were highly tolerant to high salinity and alkaline pH. The highest tolerable pH of our strain was 12.5, and the highest tolerable salinity level was 80 mg/mL. The highest salinity level tolerated for normal growth was 50 mg/mL, with a growth index of 3.63. With increasing salt stress conditions, the cell membrane permeability of Morchella sextelata increased, whereas biomass decreased. Therefore, Morchella can be cultivated in saline-alkali areas. This is the first report on the effects of saline-alkali stress on M. sextelata in China.
To Cite this article:
Download
