Scientists discover how plants recognize their "brothers" and "sisters" that occurred from the seeds of the same mother plant. The very fact that the identification of plants, their relatives had been known for a long time, but the mechanism of this process, the researchers found they could not. New work published in Communicative & Integrative Biology, and its summary is given in a press release the University of Delaware.
Plants extract dissolved in soil nutrients through their roots. The more ramified root system, the greater volume of soil the plant can "eat". Botanists have noticed that the plant families that live in the soil nearby, not compete with each other for resources - their root systems are relatively unbranched. Moreover, if the plant is located near the same species, but not a "brother" or "sister", the competition between the neighbors is very acute.
To find out how plants determine the related connection, the scientists were grown in the laboratory rezuhovidku Tal, or Arabidopsis Arabidopsis thaliana. Seedlings A. thaliana were placed in a liquid medium containing root extracts from the related or related plants of the same species. It is known that roots secrete a variety of different substances. With the growth of the scientists measured the length and branching Arabidopsis roots, as well as the length of the stems (as a resource of nutrients is limited, the more extensive root system is, the shorter generally above-ground part).
found that in the presence of extracts of the roots of "strangers" A. thaliana develop much more complex root system than in the medium, containing extracts of related plants. In one experiment, scientists inhibited root secretion by sodium orthovanadate. Plants placed on Wednesday with an extract of the roots of Arabidopsis after treatment with orthovanadate, showed no signs of recognition of relatives or strangers.
Physiology plants differs significantly from the physiology of animals, so the laws discovered by zoologists and physiologists, they do not work. Nevertheless, it was found that plants can communicate with each other and adapt to changing environmental conditions. But the authors of one recent study showed that long-term plant change "reluctantly". Such conservatism is making global warming more dangerous for plants than previously thought.
Plants extract dissolved in soil nutrients through their roots. The more ramified root system, the greater volume of soil the plant can "eat". Botanists have noticed that the plant families that live in the soil nearby, not compete with each other for resources - their root systems are relatively unbranched. Moreover, if the plant is located near the same species, but not a "brother" or "sister", the competition between the neighbors is very acute.
To find out how plants determine the related connection, the scientists were grown in the laboratory rezuhovidku Tal, or Arabidopsis Arabidopsis thaliana. Seedlings A. thaliana were placed in a liquid medium containing root extracts from the related or related plants of the same species. It is known that roots secrete a variety of different substances. With the growth of the scientists measured the length and branching Arabidopsis roots, as well as the length of the stems (as a resource of nutrients is limited, the more extensive root system is, the shorter generally above-ground part).
found that in the presence of extracts of the roots of "strangers" A. thaliana develop much more complex root system than in the medium, containing extracts of related plants. In one experiment, scientists inhibited root secretion by sodium orthovanadate. Plants placed on Wednesday with an extract of the roots of Arabidopsis after treatment with orthovanadate, showed no signs of recognition of relatives or strangers.
Physiology plants differs significantly from the physiology of animals, so the laws discovered by zoologists and physiologists, they do not work. Nevertheless, it was found that plants can communicate with each other and adapt to changing environmental conditions. But the authors of one recent study showed that long-term plant change "reluctantly". Such conservatism is making global warming more dangerous for plants than previously thought.
0 comments:
Post a Comment