Can allelopathy be used to efficiently resist the invasion of exotic plants in subtropical forests?

Extracts obtained from Cryptomeria japonica leaves were tested for growth inhibition activity against Robinia pseudoacacia seeds, which is known as a representative invasive plant in temperate forests. Inhibitory activities against radicle and hypocotyl growth were found in hexane and ethyl acetate extracts but showed no or weak activity on seed germination. The extracts also showed inhibitory activity against Trifolium repens as a representative weed. The active extracts were fractionated by silica gel column chromatography and cryptomeridiol was isolated as an active compound. Comparison of activities between cryptomeridiol and βeudesmol indicated that the diol structure of the eudesmane skeleton was important in causing the inhibitory activities.

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Growth-inhibitory activity of components in Cryptomeria japonica leaves against Robinia pseudoacacia

Tanaka

Tomita

Saijo

et al. 2020

Journal of Forest Research

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Can allelopathy be used to efficiently resist the invasion of exotic plants in subtropical forests?

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Growth-inhibitory activity of components in Cryptomeria japonica leaves against Robinia pseudoacacia

Growth-inhibitory activity of components in Cryptomeria japonica leaves against Robinia pseudoacacia

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