Developing climate-resilient crops: improving plant tolerance to stress combination.

Area of Science:

• Agricultural Science
• Plant Biology
• Environmental Science

Background:

• Global warming and climate change increase abiotic stresses (droughts, heat waves, flooding) and alter pest/pathogen dynamics, reducing crop yields.
• Agriculture faces additional pressures from pollutants and climate change impacts on soil microbiomes.
• Plants in the field experience multiple, simultaneous or sequential stresses (stress combinations), unlike controlled laboratory conditions.

Purpose of the Study:

• To highlight the urgent need for research into plant responses to combined stresses.
• To emphasize that plant responses to stress combinations are unique and unpredictable from single-stress studies.
• To review current research and propose new strategies for developing climate change-resilient crops.

Main Methods:

• Review of recent scientific literature on plant stress combinations.
• Analysis of studies investigating the interactive effects of multiple environmental stressors on plants.
• Identification of gaps in current knowledge and proposal of future research directions.

Main Results:

• Plant responses to combined stresses are often unique and cannot be extrapolated from single-stress experiments.
• Current strategies for enhancing tolerance to single stresses may not be effective under combined stress conditions.
• Climate change is predicted to increase the frequency and intensity of stress combination events.

Conclusions:

• Developing crops resilient to stress combinations is critical for ensuring food security in a changing climate.
• Further research is needed to understand the complex interactions of multiple stressors on crop plants.
• New approaches are required to breed crops that can withstand diverse and combined environmental challenges.