Do you remember what you did yesterday? If not, then you can take a lesson from Nasa poissoniana, a star flowering plant from Peruvian Andes with an unusual set of skills.
These plants can physically wiggle around their stamens – the organs they use for fertilization – to maximize the distribution of their pollen. Surprisingly, the study published last month in the system of signaling and behavior of plants, suggests that individual plants can regulate the time of these movements based on their previous experience with pollinators. In other words, they remember the past and try to repeat it.
Nasa poissoniana belongs to the subfamily of Loasoideae plants. They are known for their polychrome blooms, as well as "really painful" stings, says Body Henning, one of the leading authors of the study.
Doctor. Henning, a researcher at the Botanical Gardens and Botanical Museum in Berlin, has been working with Loisoideae for almost two decades with his fellow Maximilian Weighend of the University of Bonn in Germany. From the very beginning, "the complexity of flowers impressed us," he said. While other plants can rotate leaves or catapulate their seeds, many species of Loasoideae move their stamens: long, narrow threads that are covered with pollen. Stamens Loasoideae begin to scatter, thicken into groups and lay in flower petals. During the life of the flower, individual stamens swing one after another in the center of the flower, where they rise and offer visitors fresh pollen
. external – smart on factory standards. In some species, this movement can be provoked by light and temperature, or by pollinators themselves. When a bee interrupts around a nectar in the center of the flower, it launches the next step that climbs, is ready for a new bee, or the return of the previous bee. Thus, flowers maximize their chances of transferring pollen to different flowers.
For this latest study, researchers have divided Nasa poissoniana into several groups. "Sprays" – in this case, people with probes – visited the first group every 15 minutes, rustling with a nectar containing flowers. The second group was interrupted every 45 minutes. Other groups were left alone as controls.
The following day, the researchers watched the flowers. Those that were visited every 15 minutes were planned for this chronology, swinging in new stings faster and more often. The second group was more desperate, and its fresh stomach concentration reached a maximum of 45 minutes. Plants have been "awaiting repeated pollination," said Dr. Henning, who expects other Loasoideae members to have this talent. A great example of how exquisitely tuned plants are to their surroundings. "But she ceased to use the word" intellectual ", or other terms that could anthropomorphize the behavior of plants. Henning says he wants to know why they are trying so hard.
"The enormous total costs that these plants invest in, circulating their pollen around, is baffling," he said. "There are a number of similar successful plant groups. But none of them demonstrates such detailed work "