Plant Surface Microbiology 124 hierarchical controls should not be

hierarchical controls should not be treated as a universal remedy to curtail unfair business practices

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den Spagat zwischen möglichst hoher Flexibilität und Unterstützung des laufenden Geschäftsbetriebs zu bewältigen

(Bertram/Herz/Jocham 2002)

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Plant Surface Microbiology 124 hierarchical controls should not beMost plants rely on the co existence with microorganisms: both groups benefit from these symbioses. It has been shown that a large number of specific genes in plants and microorganisms are only activated during these interactions. Of course, various microbes also act as pathogens. Interactions between plants and microorganisms are often located on plant surfaces, such as leaf cuticles, seeds and mainly on the roots. The communication between plants