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Heat-stress Memory is Responsible for Acquired Thermotolerance in Bangia fuscopurpurea

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Title: Heat-stress Memory is Responsible for Acquired Thermotolerance in Bangia fuscopurpurea
Authors: Kishimoto, Ikuya Browse this author
Ariga, Inori Browse this author
Itabashi, Yutaka Browse this author →KAKEN DB
Mikami, Koji Browse this author →KAKEN DB
Keywords: Bangia fuscopurpurea
Fatty acid
Heat stress
Rhodophyta
Stress memory
Thermotolerance
Issue Date: Oct-2019
Publisher: John Wiley & Sons
Journal Title: Journal of phycology
Volume: 55
Issue: 5
Start Page: 971
End Page: 975
Publisher DOI: 10.1111/jpy.12895
Abstract: The environmental stresses that sessile organisms experience usually fluctuate dramatically and are often recurrent. Terrestrial plants can acquire memory of exposure to sublethal heat stress to acquire thermotolerance and survive subsequent lethal high‐temperature stress; however, little is known concerning whether seaweeds acquire thermotolerance via heat‐stress memory. We have demonstrated that the red seaweed Bangia fuscopurpurea can indeed acquire memory of sublethal high‐temperature stress, resulting in the acquisition of thermotolerance that protects against subsequent lethal high‐temperature stress. Moreover, the maintenance of heat‐stress memory was associated with a slight increase in the saturation level of membrane fatty acids. This suggests that the modification of membrane fluidity via changes in membrane fatty acid composition is involved in the establishment and maintenance of heat‐stress memory in B. fuscopurpurea. These findings provide insights into the physiological survival and growth strategies of sessile red seaweeds to cope with recurrent changes in environmental conditions.
Rights: This is the peer reviewed version of the following article: Heat-stress Memory is Responsible for Acquired Thermotolerance in Bangia fuscopurpurea, which has been published in final form at https://doi.org/10.1111/jpy.12895. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Type: article (author version)
URI: http://hdl.handle.net/2115/79385
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三上 浩司

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