Metabolic changes in barley seedlings at different aphid infestation levels

Abstract Different infestation levels with the greenbug ( Schizaphis graminum Rondani) were correlated with physiological parameters and several metabolite concentrations in young barley plants ( Hordeum vulgare cv Aramir). Leaf water potential, chlorophyll content, carbon dioxide assimilation and total soluble carbohydrates decreased significantly with more than 18 aphids per plant. Conversely, proline concentration increased with more than 18 aphids. With 100 individuals per plant, sugar concentrations decreased five times with respect to the non-infested control. Similar changes were observed in plants subjected to drought stress. These results suggest that several metabolic changes that occur in barley infested by a large number of aphids may be due in part to the lower leaf water potential caused by the insect.

• Publication year

  1994

• Venue

  Phytochemistry

• Publication date

  Unknown publication date

• Fields of study

  Biology, Environmental Science

• Identifiers
  DOI 10.1016/S0031-9422(00)94755-1
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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