An Intrinsic Geometric Constraint on Morphological Stomatal Traits

• DOI: 10.3389/fpls.2021.658702
• Publication Date: 2021-04-21T17:16:48Z
• Authors: Lirong Zhang; Shiping Wang; Xiaoxia Yang; Xiaoyong Cui; Haishan Niu
• Keywords: Linear relationship; Power function

A strong negative non-linear relationship exists between stomatal density (SD) and size (SS) or length (SL), which is of high importance in gas exchange plant evolution. However, the cause this has not been clarified. In geometry, SD an intrinsic with SS −1 SL −2 , defined as a geometric constraint here. We compiled global data to clarify influence on SD-SS relationship. The log-log scaling slope was significantly different from −2, respectively. Although non-geometric effect drove curve away power function −1, larger found. Therefore, higher possibly causes be inevitably negative. Compared pteridophyta gymnosperms, lower for angiosperm species, due most them having smaller stomata. relaxation seems extend upper range species hence enable exploit wide environments.