6 research outputs found
Genetic diversity in four cabbage populations based on random amplified polymorphic DNA markers
Transgenic sugar beet tolerant to imidazolinone obtained by Agrobacterium-mediated transformation
Population genetic analysis of hyacinth bean (Lablab purpureus (L.) Sweet, Leguminosae) indicates an East African origin and variation in drought tolerance
Recent advances in functional genomics for sugar beet (Beta vulgaris L.) improvement: progress in determining the role of BvSTI in pest resistance in roots
The arbuscular mycorrhizal mycelium from barley differentially influences various defense parameters in the non-host sugar beet under co-cultivation
Superoxide dismutase-mentor of abiotic stress tolerance in crop plants
Abiotic stresses impact growth, development,
and productivity, and significantly limit the global agricultural
productivity mainly by impairing cellular
physiology/biochemistry via elevating reactive oxygen
species (ROS) generation. If not metabolized, ROS
(such as O2
âąâ, OHâą, H2O2, or 1O2) exceeds the status
of antioxidants and cause damage to DNA, proteins,
lipids, and other macromolecules, and finally cellular
metabolism arrest. Plants are endowed with a family
of enzymes called superoxide dismutases (SODs) that
protects cells against potential consequences caused by
cytotoxic O2
âąâ by catalyzing its conversion to O2 and
H2O2. Hence, SODs constitute the first line of defense
against abiotic stress-accrued enhanced ROS and its reaction
products. In the light of recent reports, the present
effort: (a) overviews abiotic stresses, ROS, and their
metabolism; (b) introduces and discusses SODs and
their types, significance, and appraises abiotic stressmediated
modulation in plants; (c) analyzes major reports
available on genetic engineering of SODs in
plants; and finally, (d) highlights major aspects so far
least studied in the current context. Literature appraised
herein reflects clear information paucity in context with
the molecular/genetic insights into the major functions
(and underlying mechanisms) performed by SODs, and
also with the regulation of SODs by post-translational
modifications. If the previous aspects are considered in
the future works, the outcome can be significant in sustainably
improving plant abiotic stress tolerance and efficiently
managing agricultural challenges under changing
climatic conditions