Along this journey, we describe different techniques that have been key to identify important events during leaf development and discuss approaches that will further help unraveling the complex cellular and molecular mechanisms that underlie leaf growth.ĭifferent plants species produce leaves that are very diverse in size and shape, ranging for example from the huge leaves of giant rhubarb to the small leaves of Arabidopsis thaliana. In this review, we will start at the Arabidopsis rosette level and gradually zoom in from a macroscopic view on leaf growth to a microscopic and molecular view. Over the last decade, numerous phenotyping techniques have been developed to visualize and quantify leaf size and growth, leading to the identification of numerous genes that contribute to the final size of leaves. Leaves emerge as a small pool of cells at the vegetative shoot apical meristem and develop into planar, complex organs through different interconnected cellular events. In these organs, light is captured and converted into chemical energy, which plants use to grow and complete their life cycle.
In Arabidopsis, leaves contribute to the largest part of the aboveground biomass.
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