Like us, plants possess receptors, microtubules and sophisticated intercellular systems that likely facilitate a degree of spatio-temporal consciousness. Instead of generating a pattern of colors, the particles of light bouncing off a plant produce a pattern of energy molecules — sugar — in the chlorophyll in its stems and leaves. Light-stimulating chemical reactions in one leaf cause a chain reaction of signals to the entire organism via vascular bundles.
Neurobiologists have discovered that plants also have rudimentary neural nets and the capacity for primary perceptions. Indeed, the sundew plant (Drosera) will grasp at a fly with incredible accuracy — much better than you can do a fly-swatter. Some plants even know when ants are coming towards them to steal their nectar and have mechanisms to close up when they approach. Scientists at Cornell University discovered that when a hornworm starts eating sagebrush (Artemisia tridentata), the wounded plant will send out a blast of scent that warns surrounding plants — in the case of the study, wild tobacco (Nicotiana attenuata) – that trouble is on its way. Those plants, in turn, prepare chemical defenses that send the hungry critters in the opposite direction. Andre Kessler, the lead researcher, called this “priming its defense response.” “This could be a crucial mechanism of plant-plant communication,” he said.
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