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Updated: May 22, 2025

A Suppressor Screen for the Characterization of Genetic Links Regulating Chronological Lifespan in Saccharomyces cerevisiae
Published on: September 17, 2020
Hidden aging: the secret role of root senescence
Cevza Esin Tunc1, Nicolaus von Wirén1
1Molecular Plant Nutrition, Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany.
Abstract:
Root age-dependent processes have remained poorly understood. Here, we define root age-related terms in their eco-/physiological context, provide a synthesis of read-outs and traits characterizing root senescence in different root types, and follow their modulation in the light of metabolic, hormonal, and genetic control. Evidence for an endogenously regulated senescence program in roots includes changes in root anatomy, metabolism, and color, decrease in root activity, increasing levels of stress-related hormones, and increasing expression of certain transcription factors (TFs) or genes involved in oxidative stress defense. Uncovering the genetic regulation of the developmental program steering root senescence is of great importance to establish a balanced view on whole-plant aging and improve resource efficiency in crops.
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