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Related Experiment Videos

Temporal and Spatial Expression Pattern of Sucrose Synthase during Tomato Fruit Development.

F. Wang1, A. G. Smith, M. L. Brenner

  • 1Departments of Horticultural Science (F.W., A.G.S., M.L.B) and Plant Biology (M.L.B), University of Minnesota, St. Paul, Minnesota 55108.

Plant Physiology
|February 1, 1994
PubMed
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Sucrose synthase plays a key role in tomato fruit development. Its expression patterns in fruit tissues reveal regulation at both transcriptional and translational levels, impacting growth.

Area of Science:

  • Plant Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Sucrose synthase (SS) is crucial for carbohydrate metabolism in plants.
  • Its role in early tomato fruit development (Lycopersicon esculentum Mill.) is suggested but not fully elucidated.
  • Understanding SS expression is key to comprehending fruit growth regulation.

Purpose of the Study:

  • To investigate the temporal and spatial expression patterns of sucrose synthase during tomato fruit development.
  • To correlate sucrose synthase expression with key developmental stages and physiological processes.
  • To explore potential regulatory mechanisms of sucrose synthase expression.

Main Methods:

  • Quantitative analysis of sucrose synthase mRNA and protein levels throughout tomato fruit development.

Related Experiment Videos

  • Spatial localization studies of sucrose synthase mRNA within fruit tissues.
  • Comparison of expression patterns with starch accumulation.

    • Main Results:

    • Sucrose synthase mRNA and protein were predominantly found in tomato fruit compared to other organs.
    • mRNA peaked early (5-7 days after anthesis, DAA), while protein peaked later (20-25 DAA), indicating post-transcriptional regulation.
    • mRNA localization correlated with starch accumulation in specific fruit tissues like the mesocarp.

    Conclusions:

    • Sucrose synthase expression is tightly regulated at both transcriptional and translational levels during tomato fruit development.
    • Differential expression and localization suggest a significant role in supplying carbohydrates for fruit growth and starch synthesis.
    • Findings provide insights into the molecular mechanisms governing tomato fruit development.