Enhancement of Drought-Stress Tolerance of<i>Brassica oleracea</i>var.<i>italica</i>L. by Newly Isolated<i>Variovorax</i>sp. YNA59
Yuna Kim, Muhammad Aaqil Khan, Sang‐Mo Kang, Muhammad Hamayun, In‐Jung Lee
Abstract
Plants are constantly exposed and challenged by various environmental stresses throughout their life cycle. Among these environmental stresses, drought stress causes significant losses to agricultural productivity In China, drought stress reduced more than 30% of corn yield [5], while reduction in maize yield (40%), and wheat (21%) were recorded during 40% of water reduction Similarly, a 34%-68% yield reduction in cowpea depending on the timing of drought stress Drought stress leads to the generation of reactive oxygen species (ROS) such as superoxide anion (O 2-), hydrogen peroxide (H 2 O 2 ), and hydroxyl radical (HO) and cause oxidative damage to cell components, lipid and protein peroxidation, and enzyme inhibition eventually leading to cell death Drought tolerance may be improved through various methods, including plant breeding, chemical fertilizer, tissue culture, and genetic engineering, which are time consuming, costly, and have adverse effects on the environment.