Figure 1.

Published covariations between endoreduplication and cell number, cell area, or organ area in Arabidopsis leaves. Covariations were established from a nonexhaustive list of 10 selected references that are indicated on each arrow in square brackets. The references are noted in blue when a positive covariation (+) was described between endoreduplication and another variable (i.e. when an increase or decrease in endoreduplication was accompanied by a respective increase or decrease in the other variable), in red when a negative covariation (−) was described between endoreduplication and another variable (i.e. when an increase or decrease in endoreduplication was accompanied by a respective decrease or increase in the other variable), and in black in the case of an absence of covariation (∅; i.e. when a variation in endoreduplication was not accompanied by a change in the other variable). The three gray arrows represent putative functional links frequently described in the literature between endoreduplication and leaf area, either via a control of cell number (left) and cell area (right) or a direct link (middle).