Physiology and biochemistry of theAmaranthus cytokinin bioassay and its applications

Köhler, Karl-Hermann; Opltz, Carmen; Feitsch, Gabriele

doi:10.1007/bf02902307

Cited by 1 publication

(1 citation statement)

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“…Senescence bioassays were devised with various plant species (Letham, 1967;Osborne and McCalla, 1961;Letham et al, 1983). The Amaranthus bioassay measures the formation of betacyanin (Biddington and Thomas, 1973;Kohler et al, 1987); and the cucumber cotyledon bioassay (Fletcher et al, 1982) depends on the formation of chlorophyll.…”

Section: Analysis Of Cytokininsmentioning

confidence: 99%

Role of Cytokinins in Plant Growth Promotion by Rhizosphere Bacteria

Salamone

Hynes

Nelson

2005

PGPR: Biocontrol and Biofertilization

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Abstract:Plant growth regulators (PGRs) are organic substances that influence the physiology and development of plants at very low concentrations. Cytokinins are one of the five major groups of PGRs or phytohormones and regulate cytokinesis in plant cells. Soil microorganisms are capable of synthesizing PGRs such as cytokinins in pure culture, soil and in association with plant tissues. This chapter reviews the structure and function of cytokinins in plant tissues and their production by plant growth promoting rhizobacteria (PGPR). A role for microbially-produced cytokinins in plant growth and development is proposed. Cytokinin production by PGPR is an innovative alternative to enhance plant growth and may be a sustainable approach to improve the yield and quality of agricultural crops. However further research is necessary to understand the principles underlying cytokinin production by rhizobacteria and to develop cytokinin-producing inoculants for practical application by growers.

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