Reorganization of XXXX cell membrane is mediated by lipid composition adjustment to maintain optimal fluidity during water deficit.

@entity25374 @entity844 @entity2434 @entity3633 @entity1718 @entity970 @entity968
AIMS: we study the @entity25374 tolerance to water deficit and the dynamics of adaptive process at the level of the membrane. METHODS AND RESULTS: A. brasilense was exposed to @entity968 ( @entity970 ) growth and @entity970 shock. Tolerance, phospholipids and @entity844 composition and membrane fluidity were determined. A. brasilense was able to grow in the presence of @entity970 however viability was reduced. Cells grown with @entity970 showed membrane fluidity similar to those grown without, the lipid composition was modified, increasing @entity2434 and decreasing @entity3633 amounts. The unsaturation @entity1718 degree was reduced. The dynamics of the adaptive response revealed a decrease in fluidity 20 minutes after the addition of @entity970 , indicating that the @entity970 has a fluidizing effect on the hydrophobic region of the cell membrane. Fluidity returned to initial values after 60 minutes of @entity970 exposure. CONCLUSION: A. brasilense is able to perceive osmotic changes by changing membrane fluidity. This effect is offset by changes in the composition of membrane phospholipid and @entity844 , contributing to the homeostasis of membrane fluidity under water deficit. SIGNIFICANCE AND IMPACT OF THE STUDY: This knowledge can be used to develop new A. brasilense formulations showing an adapted membrane to water deficit. This article is protected by copyright. All rights reserved.
