Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Leaf senescence: signals, execution, and regulation.

Yongfeng Guo1, Susheng Gan

  • 1Cornell Genomics Initiative and Department of Horticulture, Cornell University, Ithaca, New York 14853-5904, USA.

Current Topics in Developmental Biology
|December 14, 2005
PubMed
Summary

Leaf senescence, a programmed aging process, is triggered by environmental and internal cues. Understanding senescence-associated genes (SAGs) and their regulation is key to deciphering plant aging mechanisms.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Genome-Wide Characterization of CAPE-Producing <i>PR1</i> Genes Reveals Regulator-Dependent Expression and Abiotic Stress-Associated Functions in <i>Nicotiana tabacum</i>.

Plants (Basel, Switzerland)·2026
Same author

Bifunctional Electrocatalysts with High-Entropy Alloys: Bridging Hydrogen Evolution and Oxygen Reduction.

Chemistry of materials : a publication of the American Chemical Society·2026
Same author

Analysis of the aspartic protease gene family in <i>Nicotiana benthamiana</i> and its application in recombinant protein expression.

Frontiers in plant science·2026
Same author

Metalloborophenes: Structural Diversity and Emerging Properties of Metal-Boron Two-Dimensional Frameworks.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Editorial: Plant molecular farming for biopharmaceutical production and beyond.

Frontiers in plant science·2026
Same author

Transcriptomic and metabolomic analysis of carotenoid metabolism and accumulation of carotenoid-derived products in tobacco leaves before and after curing.

Frontiers in plant science·2025

Area of Science:

  • Plant Biology
  • Molecular Biology
  • Genetics

Background:

  • Leaf senescence is a crucial developmental process in plants, involving programmed aging and cell death.
  • It is influenced by various internal factors (e.g., plant hormones, reproductive growth) and external stresses (e.g., drought, nutrient deficiency, pathogens).

Purpose of the Study:

  • To elucidate the molecular mechanisms underlying leaf senescence.
  • To identify and analyze senescence-associated genes (SAGs) and their regulatory networks.

Main Methods:

  • Genome-scale investigations of gene expression during leaf senescence.
  • Analysis of biochemical and metabolic changes associated with senescence.
  • Identification of key regulatory components in signal transduction pathways.

Related Experiment Videos

Main Results:

  • Thousands of senescence-associated genes (SAGs) are upregulated during leaf senescence.
  • Key signaling components like receptor-like kinases and MAP kinase cascades have been identified.
  • Master regulators, including WRKY transcription factors, and specific cis-elements (e.g., in SAG12) are involved in transcriptional regulation.

Conclusions:

  • Understanding SAGs and their regulation is crucial for deciphering the molecular basis of leaf senescence.
  • This research provides insights into signal perception, execution, and control of plant aging.