Definition of phototropism in English:

phototropism

noun ˌfəʊtə(ʊ)ˈtrəʊpɪz(ə)mfəʊˈtɒtrəˌpɪz(ə)mˌfoʊdəˈtroʊpɪzəm

mass nounBiology

The orientation of a plant or other organism in response to light, either towards the source of light (positive phototropism) or away from it (negative phototropism).
〔生〕（植物或其他生物体的）向光性。比较HELIOTROPISM , PHOTOTAXIS
Compare with heliotropism, phototaxis
Example sentencesExamples
- Like other interactions between organisms and their environments, plant phototropism can be thought of as a process involving three phases: perception, transduction and response.
- The nucleus-localized, flavin-binding gene products, CRY1 and CRY2 are involved in several blue light responses, including phototropism.
- One of the earliest noted auxin effects was in phototropism, the curvature of stems toward a light source.
- Phototropins mediate photomovement responses such as phototropism, chloroplast relocation and stomatal opening.
- The latter is known as a photoreceptor, for example, for phototropism, stomatal aperture and entrainment of endogenous rhythms in plants and animals.

Derivatives

phototropic

adjective fəʊtə(ʊ)ˈtrɒpɪk

Biology

Blue-light reception in plants leads to phototropic plant movement, chloroplast relocation, and opening of stomatal guard cells.
Example sentencesExamples
- Phototropins and homologs, recently renamed Phot proteins, comprise a class of blue-light receptors that are involved in phototropic plant movement, chloroplast relocation, and stomatal opening in guard cells.
- At the end of the blue light treatment, wild-type hypocotyls showed curvatures of about 60°C and red-fluorescing chloroplasts in the phototropic arch (not shown).
- It has been known for more than a century that unilateral illumination induces phototropic bending in plants.
- These experiments provide evidence that periodic short-term exposure to wind can induce phototropic responses in the early stage of pine seedlings' development.

Definition of phototropism in US English:

phototropism

nounˌfōdəˈtrōpizəmˌfoʊdəˈtroʊpɪzəm

Biology

The orientation of a plant or other organism in response to light, either toward the source of light (positive phototropism) or away from it (negative phototropism).
〔生〕（植物或其他生物体的）向光性。比较HELIOTROPISM , PHOTOTAXIS
Compare with heliotropism, phototaxis
Example sentencesExamples
- The latter is known as a photoreceptor, for example, for phototropism, stomatal aperture and entrainment of endogenous rhythms in plants and animals.
- Like other interactions between organisms and their environments, plant phototropism can be thought of as a process involving three phases: perception, transduction and response.
- Phototropins mediate photomovement responses such as phototropism, chloroplast relocation and stomatal opening.
- One of the earliest noted auxin effects was in phototropism, the curvature of stems toward a light source.
- The nucleus-localized, flavin-binding gene products, CRY1 and CRY2 are involved in several blue light responses, including phototropism.

词汇	phototropism
释义	Definition of phototropism in English: phototropism noun ˌfəʊtə(ʊ)ˈtrəʊpɪz(ə)mfəʊˈtɒtrəˌpɪz(ə)mˌfoʊdəˈtroʊpɪzəm mass nounBiology The orientation of a plant or other organism in response to light, either towards the source of light (positive phototropism) or away from it (negative phototropism). 〔生〕（植物或其他生物体的）向光性。比较HELIOTROPISM , PHOTOTAXIS Compare with heliotropism, phototaxis Example sentencesExamples Like other interactions between organisms and their environments, plant phototropism can be thought of as a process involving three phases: perception, transduction and response. The nucleus-localized, flavin-binding gene products, CRY1 and CRY2 are involved in several blue light responses, including phototropism. One of the earliest noted auxin effects was in phototropism, the curvature of stems toward a light source. Phototropins mediate photomovement responses such as phototropism, chloroplast relocation and stomatal opening. The latter is known as a photoreceptor, for example, for phototropism, stomatal aperture and entrainment of endogenous rhythms in plants and animals. Derivatives phototropic adjective fəʊtə(ʊ)ˈtrɒpɪk Biology Blue-light reception in plants leads to phototropic plant movement, chloroplast relocation, and opening of stomatal guard cells. Example sentencesExamples Phototropins and homologs, recently renamed Phot proteins, comprise a class of blue-light receptors that are involved in phototropic plant movement, chloroplast relocation, and stomatal opening in guard cells. At the end of the blue light treatment, wild-type hypocotyls showed curvatures of about 60°C and red-fluorescing chloroplasts in the phototropic arch (not shown). It has been known for more than a century that unilateral illumination induces phototropic bending in plants. These experiments provide evidence that periodic short-term exposure to wind can induce phototropic responses in the early stage of pine seedlings' development. Definition of phototropism in US English: phototropism nounˌfōdəˈtrōpizəmˌfoʊdəˈtroʊpɪzəm Biology The orientation of a plant or other organism in response to light, either toward the source of light (positive phototropism) or away from it (negative phototropism). 〔生〕（植物或其他生物体的）向光性。比较HELIOTROPISM , PHOTOTAXIS Compare with heliotropism, phototaxis Example sentencesExamples The latter is known as a photoreceptor, for example, for phototropism, stomatal aperture and entrainment of endogenous rhythms in plants and animals. Like other interactions between organisms and their environments, plant phototropism can be thought of as a process involving three phases: perception, transduction and response. Phototropins mediate photomovement responses such as phototropism, chloroplast relocation and stomatal opening. One of the earliest noted auxin effects was in phototropism, the curvature of stems toward a light source. The nucleus-localized, flavin-binding gene products, CRY1 and CRY2 are involved in several blue light responses, including phototropism.
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