A plant uses "metal armor" to resist pathogens
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Last Update: 2010-09-13
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Source: Internet
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Author: User
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A new study in the UK found that a herb can accumulate a lot of metal elements in its leaves to avoid the invasion of bacteria, as if it were equipped with a layer of "metal armor" Researchers from Oxford University reported in a new issue of Public Library of science pathogens that a plant called kale suppressor can accumulate high concentrations of zinc, nickel, cadmium and other metal elements in its leaves, but it was not clear how it can accumulate metals In order to understand the reason, the researchers cultured blue vegetables in different metal concentration environment, and used Pseudomonas syringae, which often causes diseases in radish and other plants, to carry out experiments The results showed that no matter zinc, nickel or cadmium, as long as the concentration of metals increased, the invasion degree of bacteria would be reduced Dr Gail Preston, who was involved in the study, said it showed that the blue vegetables used the metal elements of the environment to put "metal armor" on themselves to resist the invasion of bacteria However, the researchers also found that while the blue vegetables were equipped with "strong shields", some bacteria also evolved "sharp spears" Some bacteria found in metal mines have evolved high metal tolerance, so it is possible to survive in plants with high metal concentration The researchers say it's like an "arms race" that continues to take place in the interactive evolution of both sides in nature.
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