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April 13, 2026Environmental and Experimental BotanyOpen Access

Progressive dehydration stress limits survival and growth of native Antarctic flowering plants: species-specific physiological and biochemical responses

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Authors

SSSyahril SulaimanKMKyungwon MinJLJung‐Eun Lee

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Overview

Experimental investigation shows species-specific physiological responses to dehydration in Antarctic plants, indicating adaptive strategies under climate stress.

Key Points

  • The aim is to understand how progressive dehydration affects the survival and growth of two native Antarctic flowering plants under climate change.
  • Subjected Deschampsia antarctica and Colobanthus quitensis to a 40-day dehydration treatment at 16°C.
  • Assessed physiological responses such as photosynthetic activity, biomass accumulation, and water content.
  • Measured antioxidant enzyme activities, chlorophyll concentration, and soluble sugar levels.
  • D. antarctica showed higher growth and sustained photosynthesis longer under drought conditions.
  • C. quitensis demonstrated a conservative response with early resource allocation and gas exchange suppression.
  • Both species exhibited partial survival after 30 days but complete mortality following 40 days of dehydration.

Cite This Study

Sulaiman et al. (2026) studied this question.

synapsesocial.com/papers/69dc87ea3afacbeac03e9ef5https://doi.org/10.1016/j.envexpbot.2026.106361
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