Effects of Drought Stress on Peramine and Lolitrem B in Epichloe-Endophyte-Infected Perennial Ryegrass
LIFE-BASEL(2022)
摘要
Perennial ryegrass (Lolium perenne) infected by Epichloe endophytes contains alkaloids that are responsible for toxicosis in many countries. Drought may greatly affect the alkaloids contents of symbionts. The E+ perennial ryegrass was grown in pots with different soil moisture conditions (15%, 30%, 45% and 60% relative saturation moisture content, RSMC) for four months in a greenhouse of Lanzhou University, and then, the aboveground tissues were collected. The levels of peramine and lolitrem B in all plant samples were determined. The results showed that the drought stress significantly (p < 0.05) increased the peramine concentrations of perennial ryegrass but did not affect the lolitrem B concentrations. In addition, the drought stress significantly (p < 0.05) reduced the plant height and dry matter of perennial ryegrass. In conclusion, drought stress affects the peramine concentration in the perennial ryegrass-endophyte symbiont but may not affect the lolitrem B concentration.
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关键词
Lolium perenne,endophytes,alkaloids,drought stress
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