Standardized Graphical Symbol for Gravity under Continuous Clinorotation

Icon Origin & Citation: This graphical symbol is introduced and appears for the first time within Appendix Figure S5 of the publication: "Modulation of Root Hydrotropism and Recovery From Drought by MIZ1-like Genes in Tomato".

This graphical symbol serves as a standardized indicator illustrating the behavior of the gravity vector (g) under continuous clinorotation. By consolidating complex rotation parameters into a single visual cue, it eliminates the need for redundant diagrams, significantly enhancing manuscript readability.

Scientific Importance in Tropism Studies: In plant root research, particularly involving competing stimuli like hydrotropism (growth toward moisture) or halotropism (growth away from salinity), isolating the target response requires neutralizing the directional baseline effect of gravity.

Using continuous clinorotation ensures that the directional influence of gravity is constantly redistributed and effectively minimized over time, allowing researchers to study these alternative tropic mechanisms without gravitational interference. This icon instantly conveys that the directional vector of gravity has been randomized, providing immediate, unambiguous context for interpreting pure hydrotropic or halotropic root phenotypes.