2023 review

Auxin-cytokinin interplay shapes root functionality under low-temperature stress

[Review of ]. TRENDS IN PLANT SCIENCE, 28(4), 447–459.

By: M. Tiwari *, R. Kumar *, S. Subramanian *, C. Doherty n  & S. Jagadish *

MeSH headings : Cytokinins / physiology; Indoleacetic Acids; Temperature; Meristem / genetics; Plant Roots / physiology; Arabidopsis Proteins / metabolism; Arabidopsis / genetics; Gene Expression Regulation, Plant / genetics
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: April 17, 2023

Low-temperature stress alters root system architecture. In particular, changes in the levels and response to auxin and cytokinin determine the fate of root architecture and function under stress because of their vital roles in regulating root cell division, differentiation, and elongation. An intricate nexus of genes encoding components of auxin and cytokinin biosynthesis, signaling, and transport components operate to counteract stress and facilitate optimum development. We review the role of auxin transport and signaling and its regulation by cytokinin during root development and stem cell maintenance under low-temperature stress. We highlight intricate mechanisms operating in root stem cells to minimize DNA damage by altering phytohormone levels, and discuss a working model for cytokinin in low-temperatures stress response.