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[Allelopathy of grape root aqueous extracts].

Kun Li1, Xiu-wu Guo, Yin-shan Guo

  • 1College of Horticulture, Shenyang Agricultural University, Shenyang 110161, China. xhgbox@163.com

Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|October 1, 2010
PubMed
Summary
This summary is machine-generated.

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Grape root extracts and specific allelochemicals like salicylic acid inhibit Red Globe seedling growth. Higher concentrations lead to greater growth inhibition and physiological changes in plants.

Area of Science:

  • Plant Physiology
  • Agricultural Science
  • Biochemistry

Context:

  • Grape cultivation is economically significant worldwide.
  • Understanding allelopathic interactions is crucial for sustainable agriculture.
  • Red Globe is a commercially important grape cultivar.

Purpose:

  • To investigate the impact of Red Globe grape root aqueous extracts on seedling growth.
  • To identify key allelochemicals present in the root extracts.
  • To determine the dose-dependent effects of identified allelochemicals on seedling physiology.

Summary:

  • Aqueous extracts from Red Globe grape roots significantly inhibited seedling growth, with effects intensifying at higher concentrations (0.02, 0.1, 0.2 g/mL).
  • LC-MS analysis identified allelochemicals including p-hydroxybenzoic acid, salicylic acid, phenylpropionic acid, and coumaric acid.

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  • Salicylic acid and phenylpropionic acid (at 0.1, 1, 10 mmol/L) markedly suppressed seedling growth, reducing plant height, stem diameter, biomass, photosynthetic rates, starch, and root activity, while increasing soluble sugar and MDA content.

    • Impact:

    • Identifies specific allelochemicals in grape roots that can negatively affect plant development.
    • Provides insights into the physiological mechanisms of allelopathic inhibition in grape seedlings.
    • Informs strategies for managing allelopathy in vineyards and optimizing grape cultivation practices.