Abstract
Plant stress is a real dilemma; it puzzles plant biologists and is a global problem that negatively affects people’s daily lives. Of particular interest is salinity, because it represents one of the major water-related stress types. We aimed to determine the signals that guide the cellular-related events where various adaptation mechanisms cross-talk to cope with salinity-related water stress in plants. In an attempt to unravel these mechanisms and introduce cellular events in the right context, we expansively discussed how salt-related signals are sensed, with particular emphasis on aquaporins, nonselective cation channels (NSCCs), and glycosyl inositol phosphorylceramide (GIPC). We also elaborated on the critical role Ca2+, H+, and ROS in mediating signal transduction pathways associated with the response and tolerance to salt stress. In addition, the fragmentary results from the literature were compiled to develop a harmonized, informational, and contemplative model that is intended to improve our perception of these adaptative mechanisms and set a common platform for plant biologists to identify intriguing research questions in this area.
Highlights
Unlike animals that can exhibit the fight or flight response, plants are sessile organisms that have only one approach when encountering stress—adaptation
Grondin et al [16] showed that open stomata 1 (OST1; known as Snf1-related protein kinase 2.6; SnRK2.6) can phosphorylate PIP2;1 at Ser121 in an ABA-dependent manner
These results indicate the interconnection of reactive oxygen species (ROS) and H+ signals, adding additional levels of complexity to cellular signals
Summary
Unlike animals that can exhibit the fight or flight response, plants are sessile organisms that have only one approach when encountering stress—adaptation. Plants constantly monitor an ever-changing environment, sense the incoming signals, and correctly integrate and decode the signals to formulate a battery of signaling molecules that enable them to cope with stress. Water-related stress (e.g., drought and salinity) represents one of the major types of plant stressors, of which osmotic stress is considered a general component [1]. We focus on salinity, along with its ionic and osmotic components. We elaborate on the main elements of the term “signals on demand” by answering two questions: (1) how do plants sense salt-related signals? (2) how are these signals correctly decoded and processed to formulate adaptive cellular responses? We elaborate on the main elements of the term “signals on demand” by answering two questions: (1) how do plants sense salt-related signals? and (2) how are these signals correctly decoded and processed to formulate adaptive cellular responses?
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
