Sucrose and Mannans Affect Arabidopsis Shoot Gravitropism at the Cell Wall Level.

Gravitropism is the plant organ bending in response to gravity. Gravitropism, phototropism and sufficient mechanical strength define the optimal position of young shoots for photosynthesis. Etiolated wild-type Arabidopsis seedlings grown horizontally in the presence of sucrose had a lot more upright hypocotyls than seedlings grown without sucrose.

Uptake and Metabolic Conversion of Exogenous Phosphatidylcholines Depending on Their Acyl Chain Structure in .

Fungi and plants are not only capable of synthesizing the entire spectrum of lipids de novo but also possess a well-developed system that allows them to assimilate exogenous lipids. However, the role of structure in the ability of lipids to be absorbed and metabolized has not yet been characterized in detail. In the present work, targeted lipidomics of phosphatidylcholines (PCs) and phosphatidylethanolamines (PEs), in parallel with morphological phenotyping, allowed for the identification of differences in the effects of PC molecular species introduced into the growth medium, in particular, typical bacterial saturated (14:0/14:0, 16:0/16:0), monounsaturated (16:0/18:1), and typical for fungi and plants polyunsaturated (16:0/18:2, 18:2/18:2) species, on .

Microgravity modelling by two-axial clinorotation leads to scattered organisation of cytoskeleton in Arabidopsis seedlings.

Proper plant development in a closed ecosystem under weightlessness will be crucial for the success of future space missions. To supplement spaceflight experiments, such conditions of microgravity are modelled on Earth using a two-axial (2A) clinorotation, and in several fundamental studies resulted in the data on proteome and metabolome adjustments, embryo development, cell cycle regulation, etc. Nevertheless, our understanding of the cytoskeleton responses to the microgravity is still limited.