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- Title
Interactions between the plants and microorganisms.
- Authors
KREMER, ROBERT J.
- Abstract
Allelopathic microorganisms comprise rhizobacteria and fungi that colonize the surfaces of plant roots and produce and release phytotoxic metabolites, similar to allelochemicals, that adversely affect the growth of their host plants. The allelopathic microorganisms are grouped separately from typical phytopathogens because they do not follow classical disease cycles involving aggressive infection and colonization of plant tissues. Allelopathic microorganisms passively suppress or inhibit the plant root growth through production of variety of phytotoxic compounds absorbed by the plant, or they compete for limited plant nutrients in the rhizosphere. Thus it is important to understand the effects of allelopathic microorganisms on plant growth and discern these from traditional phytopathogens so that appropriate management of plant growth problems can be implemented based on this knowledge. The purpose of this paper is to provide basic information on protocol development of bioassays to identify allelopathic microorganisms associated with plants. Guidance provided by the general procedures is presented as templates for devising custom protocols to aid in eventual development of standardized bioassays for consistent detection and characterization of allelopathic microorganisms, for which little information and reliable data currently exist. The use of improved bioassays that yield reproducible results will enhance comprehension of the effects of allelopathic microorganisms on plant growth and increase the overall perspective of functional biology and ecology of the rhizosphere microbial community beyond general descriptions of interactions between plants and soilborne phytopathogens.
- Subjects
PLANTS; MICROORGANISMS; ROOT development; ROOT diseases; HOST plants for phytopathogenic microorganisms
- Publication
Allelopathy Journal, 2013, Vol 31, Issue 1, p51
- ISSN
0971-4693
- Publication type
Article