A STUDY OF THE DEVELOPMENT OF THE ROOT SURFACE MICROFLORA DURING THE INITIAL STAGES OF PLANT GROWTH

Journal of Applied BacteriologyPublished 1 June 1956

Albert Rovira

DOI10.1111/j.1365-2672.1956.tb00048.x

Citations96

TL;DR

Evidence is presented that furtherDevelopment of the root surface population after the initial high rate of multiplication was dependent on the normal development of the plant, and interesting differences between the roots of tomatoes and oats.

Abstract

SUMMARY: A study of the development of the microfloras on the seeds and roots of tomatoes and oats during germination and subsequent root development showed a rapid selective multiplication on the seed during the initial stages of germination and also on the root almost immediately after emergence. Evidence is presented that further development of the root surface population after the initial high rate of multiplication was dependent on the normal development of the plant. Direct microscopic observations of the micro‐organisms of the root surfaces showed interesting differences between the roots of tomatoes and oats. In the former, the root hairs of young plants were free from bacteria but in the oats even young root hairs supported large numbers of organisms. In both plants the root tips were invariably free from organisms.

Keywords

Agricultural and Biological SciencesBiochemistry, Genetics and Molecular Biology

Journal of Soil ScienceMICROBIOLOGICAL STUDIES OF SOME SUBANTARCTIC SOILS

407 Citations1955J.S. Bunt, AD Rovira

A stimulation occurred in each case in the rhizosphere, even in the more primitive Azorella selago and Dicranoweisia antarctica associations at Macquarie Island.

Journal of General MicrobiologyA Technique for the Quantitative Estimation of Soil Micro-organisms: With a Statistical Note by

390 Citations1948Philip C. Jones, J. E. Mollison +1 more

Soil micro-organisms have been counted by a new technique whose essential feature is the suspension of measured amounts of soil in a molten agar gel from which small drops are removed and allowed to solidify as thin films on a haemocytometer slide of known depth.

Plant and SoilPlant root excretions in relation to the rhizosphere effect

338 Citations1956Albert Rovira

The excretory products of roots of peas and oats grown aseptically in quartz sand were studied by paper chromatography and found to excrete considerable amounts of amino material during 21 days growth with 22 different amino compounds, while oats excreted less.

Canadian Journal of Research/Canadian journal of researchTHE INTERACTION OF HIGHER PLANTS AND SOIL MICRO-ORGANISMS: I. MICROBIAL POPULATION OF RHIZOSPHERE OF SEEDLINGS OF CERTAIN CULTIVATED PLANTS

113 Citations1940M. I. Timonin

It was found that bacteria and actinomycetes were 7 to 71 times greater in the rhizosphere than in the soil distant from the roots, whereas fungi were but 0.75 to 3.1 times more numerous.

Journal of EcologyDevelopment of a Soil Microflora in Relation to Plant Succession on Sand- Dunes, Including the `Rhizosphere' Flora Associated with Colonizing Species

78 Citations1952D. M. Webley, D. J. Eastwood +1 more

An attempt to make an attempt to investigate the rhizosphere flora of dominant species in naturally occurring plant communities through the development of soil microfloras associated with particular plant communities using sand-dune communities.