Yoonha Kim, Yong Suk Chung, Eungyeong Lee, Pooja Tripathi, Seong Heo, Kyung-Hwan Kim.

Int J Mol Sci 2020 Feb 22;21(4):1513.  doi: 10.3390/ijms21041513.

Abstract

Rice (Oryza sativa L.) is grown in a wide range of ecosystems, including flood- and drought-prone environments. As rice is the main food for more than half of the world’s population, rice yield losses pose a major threat to food security. Rice is vulnerable to a wide range of abiotic stresses, like drought, heavy metals, salinity, cold, and submergence. It is a high water-consuming crop and irrigated rice represents 53% of the global cultivated area of rice. Availability and accessibility of fresh water determine the global rice production.The current unpredictable climate changes are causing frequent and severe droughts. Such circumstances emphasize the need to understand the response of plants to drought stress, especially in rice, one of the most important grain crops. Knowledge of the drought stress response components is especially important in plant roots, the major organ for the absorption of water and nutrients from the soil. Thus, this article reviews the root response to drought stress in rice. It is presented to provide readers with information of use for their own research and breeding program for tolerance to drought stress in rice.

See: https://pubmed.ncbi.nlm.nih.gov/32098434/

Table 1: Details of genes involved in drought tolerance.

Figure 1: Two methods of collecting two-dimensional images. (a) horizontal root crown method in which the roots are placed on a flat surface, and the camera is placed above the roots; (b) vertical root crown method in which the root is hung from the roof and the camera is placed in front of the hanging root.