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Phytotoxicity of Chemical Compounds from Cinnamomum camphora Pruning Waste in Germination and Plant Cultivation

Author

Listed:
  • Hong Wang

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

  • Wei Lin

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

  • Dongdong Zhang

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

  • Rui Yang

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

  • Wanlai Zhou

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

  • Zhiyong Qi

    (Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
    Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China)

Abstract

Much previous research has indicated most composts of pruning waste are characterized by potential phytotoxicity, it is highly correlated with the chemical compounds of raw materials. Cinnamomum camphora, a common kind of pruning waste in Southeast Asia and East Asia, is characterized by intense bioactivities due to complex chemical components. This study investigated the potential phytotoxicity of C. camphora pruning waste in light of germination and higher plant growth. C. camphora extracted from leaves completely inhibited seed germination and still showed suppression of root elongation at an extremely low dosage. C. camphora extract also displayed significant inhibition of nutrient absorption in tomato seedlings, including moisture, available nutrients (N, P and K) and key microelements (Fe, Mn, Zn and S). The gene expression of aquaporins and transporters of nitrate and phosphate was significantly up-regulated in roots. This could be regarded as a positive response to C. camphora extract for enhancing nutrient absorption. Moreover, the severe damage to the plasma membrane in roots caused by C. camphora extract might seriously affect nutrient absorption. Camphor is the main component of the C. camphora extract that may induce the phytotoxicity of plasma membrane damage, resulting in the inhibition of nutrient absorption and low biomass accumulation. This study provided a new understanding of the ecotoxicological effects of C. camphora pruning waste, indicating that the harmless disposal of pruning waste requires much attention and exploration in the future.

Suggested Citation

  • Hong Wang & Wei Lin & Dongdong Zhang & Rui Yang & Wanlai Zhou & Zhiyong Qi, 2022. "Phytotoxicity of Chemical Compounds from Cinnamomum camphora Pruning Waste in Germination and Plant Cultivation," IJERPH, MDPI, vol. 19(18), pages 1-12, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:18:p:11617-:d:915454
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    References listed on IDEAS

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    1. Rui Yang & Xuejiao Chen & Dongdong Zhang & Hong Wang & Wanlai Zhou & Wei Lin & Zhiyong Qi, 2022. "Steam-Exploded Pruning Waste as Peat Substitute: Physiochemical Properties, Phytotoxicity and Their Implications for Plant Cultivation," IJERPH, MDPI, vol. 19(9), pages 1-16, April.
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