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Related Concept Videos

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The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
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Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
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Updated: Oct 29, 2025

Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
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Assessing Global Circadian Rhythm Through Single-Time-Point Transcriptomic Analysis.

Xingwei Wang1,2, Yufeng Xu3, Mian Zhou4

  • 1State Key Laboratory for Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing, China.

Methods in Molecular Biology (Clifton, N.J.)
|July 12, 2021
PubMed
Summary
This summary is machine-generated.

The molecular timetable method estimates plant circadian rhythms from single-time-point transcriptomes, accelerating crop clock research. This study applies this method to soybean, offering technical insights and scripts for broader use.

Keywords:
Circadian clockMolecular timetableSoybeanSubmergenceTranscriptome

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Area of Science:

  • Plant Biology
  • Genomics
  • Chronobiology

Background:

  • The plant circadian clock regulates physiological processes and is linked to crop traits.
  • Understanding crop circadian clocks is limited by genetic resource scarcity and high-cost time-course profiling.

Purpose of the Study:

  • To apply the molecular timetable method for studying the soybean circadian clock.
  • To provide technical guidance and resources for using this novel approach in crop research.

Main Methods:

  • Utilized the molecular timetable method for circadian rhythm estimation.
  • Analyzed single-time-point transcriptome data in soybean.
  • Developed and shared R Markdown scripts for method application.

Main Results:

  • Successfully applied the molecular timetable method to soybean.
  • Identified key technical considerations for its use in crop circadian studies.
  • Demonstrated the potential of single-time-point analysis to overcome limitations of traditional methods.

Conclusions:

  • The molecular timetable method is a promising, cost-effective approach for crop circadian clock research.
  • This study provides a practical framework and tools for soybean circadian clock analysis.
  • Facilitates accelerated discovery in crop genetics and breeding through efficient circadian profiling.