A special type of channels that open and close in response to mechanical forces are known as mechanosensitive (MS) ion channels or stretch-gated ion channels 1. They respond to these signals by activating various channel proteins.
The present study unfolded various characteristics of MSLs in cereals, which will facilitate their in-depth functional characterization in future studies.Īll organisms including bacteria, plants and animals, receive mechanical signals from both internal (osmotic pressure and plasma membrane distortion) and external environment (gravity, touch, sound) 1. A comparative expression profiling of paralogous genes revealed either retention of function or pseudo-functionalization. The co-expression analysis suggested their interactions with other genes involved in growth, defense responses etc. Altered expression during CaCl 2 stress suggested their role in Ca 2+ homeostasis and signaling. Differential expression of various MSL genes in tissue developmental stages and stress conditions revealed their precise role in development and stress responses. These genes consisted of cis-regulatory elements related to growth and development, responsive to light, hormone, and stress.
The phylogenetic analysis, subcellular localization, and sequence homology suggested clustering of MSLs into two classes. These genes were located on various chromosomes of their respective cereal, while MSLs of T. Herein, a total of 11, 10, 6, 30, 9, and 8 MSL genes were identified in Aegilops tauschii, Hordeum vulgare, Sorghum bicolor, Triticum aestivum, Triticum urartu, and Zea mays, respectively. They participate in many plant developmental processes including the maintenance of plastid shape, pollen tube growth, etc. Mechanosensitive ion channels are pore-forming transmembrane proteins that allow ions to move down their electrochemical gradient in response to mechanical stimuli.
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