Abiotic stress caused by saline environments and extreme light and
temperature conditions can lead to increased production of reactive oxygen
species (ROS). Excessive ROS production will further lead to deleterious
effects. Peroxiredoxin (Prx) is one of the primary ROS-scavenging enzymes of
plants. Peroxiredoxin Q (PrxQ), a member of Prx family, was recently cloned
from plants. To elucidate the protective function of PrxQ during abiotic
stress, they increased the capacity of Lisianthus (Eustoma grandiflorum) to
express PrxQ gene (SsPrxQ) from seepweeds (Suaeda salsa).

Results showed that the rPrxQ protein exhibit antioxidant activity and
thioredoxin-dependent peroxidase activity in vitro. Furthermore,
overexpression of SsPrxQ led to enhanced tolerance to salt and high light
intensity. Based on the findings, SsPrxQ can be used to develop stress
resistant plants

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