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词汇 chemotropism
释义

Definition of chemotropism in US English:

chemotropism

noun
  • A tropism, especially of a plant, in response to a particular substance.

    Example sentencesExamples
    • This kind of chemotropism is called ‘chemorepulsion’.
    • This experiment actually looks at chemotropism for potassium, which is a macronutrient, so you will need to dilute your copper sulfate solution at 1 ml into 1 liter before you begin your watering.
    • Here a complicated set of tropisms is involved from thigmotropism, or response to touch when the insect lights on the leaf, to a chemotropism in the secreting of digestive juices.
    • But the notion of chemotropism came to fruition only a decade later in the context of nerve regeneration.
    • Studies of chemotropism in yeast revealed important differences in the identity of the sensory pathways involved in gradient sensing in D. discoideum and Saccharomyces cerevisiae.

Derivatives

  • chemotropic

  • adjective ˌkēmōˈträpik
    • Although they have been shown to function in nerve growth cones, the new studies [1,2] are the first to demonstrate that they have a role in chemotropic axon guidance.
      Example sentencesExamples
      • These findings support the hypothesis that chemotropic mechanisms guide developing axons to their intermediate targets in the vertebrate CNS.
      • Growth factors delivered according to the invention exert a trophic effect at or near the delivery site (along chemotropic gradients stemming from the delivery site).
      • Inhibition of this local protein synthesis blocks the turning responses of growth cones in a chemotropic gradient suggesting that local synthesis is involved in directional steering.
      • A computational account of these results is proposed, based on a unified model that combines chemotropic gradients and spike-time-dependent synaptic plasticity.
  • chemotropically

  • adverb -ik(ə)lē
    • If the axon reorients towards or away from the pipette it suggests that the molecule acts chemotropically to influence axon behavior.
      Example sentencesExamples
      • Upon germination, broomrape seeds develop a small radicle that grows chemotropically towards host roots and firmly connects to a host rootlet.
      • Growth cones isolated from their cell bodies are able to navigate correctly along the visual pathway in vivo and to respond chemotropically to guidance factors in vitro.
      • Hunger, for example, calls out motion through changes produced by katabolism in the organism, whereby it is attracted chemotropically to food.

Definition of chemotropism in US English:

chemotropism

noun
  • A tropism, especially of a plant, in response to a particular substance.

    Example sentencesExamples
    • Here a complicated set of tropisms is involved from thigmotropism, or response to touch when the insect lights on the leaf, to a chemotropism in the secreting of digestive juices.
    • This kind of chemotropism is called ‘chemorepulsion’.
    • Studies of chemotropism in yeast revealed important differences in the identity of the sensory pathways involved in gradient sensing in D. discoideum and Saccharomyces cerevisiae.
    • But the notion of chemotropism came to fruition only a decade later in the context of nerve regeneration.
    • This experiment actually looks at chemotropism for potassium, which is a macronutrient, so you will need to dilute your copper sulfate solution at 1 ml into 1 liter before you begin your watering.
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