A new leaf imaging system lets scientists watch plant stomata control water loss and carbon uptake in real time.

For centuries, scientists have known that plants "breathe" through microscopic pores on their leaves called stomata. These ...

A scanning electron microscope reveals nematodes (highlighted in green) inside the spongy mesophyll of a European beech (Fagus sylvatica) leaf infected with beech leaf disease (BLD). Eggs are marked ...

Plant leaf senescence is a highly regulated, genetically encoded process that marks the final stage of leaf development. This complex phenomenon involves a coordinated dismantling of the ...

The level of magnification in this image makes it easy to distinguish this walking leaf insect from the actual leaf behind it. However, if you were looking at this insect from a little farther away, ...