The F-box protein is a major subunit of the Skp1-Cullin-F-box (SCF) complex.
The team of Zhongxian Zhao from Shandong Agricultural University had
previously isolated an F-box
[www.isaaa.org] gene
from [www.isaaa.org]
wheat, TaFBA1. The team now aims to know if overexpression of TaFBA1 in
tobacco plants can improve its
[www.isaaa.org] salt
stress tolerance.

The transgenic tobacco plants overexpressing TaFBA1 exhibited increases in
germination rate, root elongation, and biomass accumulation under salt
stress. Improvements in the photosynthetic rate and related parameters were
also found in the transgenic plants. These suggest that overexpression of
TaFBA1 can improve salt stress tolerance.

Furthermore, the transgenics also displayed less membrane damage, higher
antioxidant enzyme activity, and less accumulation of ROS under salt stress.
The transgenic plants also had lower Na+ content and higher K+ content than
WT plants in leaves and roots.

This shows that the enhancement of plant salt stress tolerance may be
associated with an improvement in antioxidative competition.

[www.sciencedirect.com]



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