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Light as a stressor and its impact on biotic and abiotic stress responses in plants
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  • Venja Roeber,
  • Ishita Bajaj,
  • Mareike Rohde,
  • Thomas Schmulling,
  • Anne Cortleven
Venja Roeber
Freie Universitat Berlin Institut fur Biologie
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Ishita Bajaj
Freie Universitat Berlin Institut fur Biologie
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Mareike Rohde
Freie Universitat Berlin Institut fur Biologie
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Thomas Schmulling
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Anne Cortleven
Freie Universitat Berlin Institut fur Biologie
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Abstract

Light is important for plant life as a source of energy to drive photosynthesis but also as an environmental signal regulating development or cellular events such as resetting of the circadian clock. Light itself can cause stress such as excess light, fluctuating light, photoperiod and ultraviolet light stress. Light quality, quantity and light duration are important sources of information to prepare plants for future light stress events. Recurring light stress results in acclimation processes to the changing light environment. Furthermore, light regulates the responses of plants to diverse biotic and abiotic stresses. For example, short day conditions or shady environments prime thermotolerance and increase cold acclimation. Similarly, during drought stress, light signaling is important for the plant´s stress response. Additionally, the light environment affects the plant´s responses to biotic intruders such as pathogens or insect herbivores. Light influence many stress responses resulting in positive growth-defense trade-offs. Under shade, however, plants prioritize growth over defense and stress responses. In this review, we summarize the impact of light as a stressor and its influences on abiotic and biotic stress responses with special focus on the role of the different light receptors and the crosstalk between light signaling components and stress response pathways.

Peer review status:UNDER REVIEW

30 Jun 2020Submitted to Plant, Cell & Environment
01 Jul 2020Submission Checks Completed
01 Jul 2020Assigned to Editor
09 Jul 2020Reviewer(s) Assigned
08 Aug 2020Review(s) Completed, Editorial Evaluation Pending
04 Sep 20201st Revision Received
04 Sep 2020Submission Checks Completed
04 Sep 2020Assigned to Editor
19 Sep 2020Reviewer(s) Assigned