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A STUDY OF POLYSACCHARIDE‐PRODUCING ORGANISMS OCCURRING IN THE ROOT REGION OF CERTAIN PASTURE GRASSES
Author(s) -
WEBLEY D. M.,
DUFF R. B.,
BACON J. S. D.,
FARMER V. C.
Publication year - 1965
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1965.tb01428.x
Subject(s) - dactylis glomerata , lolium perenne , phleum , rhizosphere , biology , pasture , strain (injury) , red clover , botany , agronomy , poaceae , bacteria , genetics , anatomy
Summary A study has been made of the incidence of polysaccharide‐producing bacteria in the root region of the grass strains Ryegrass (Lolium perenne ) strain 823, Cocksfoot ( Dactylis glomerata ) strain S 143 , and Timothy ( Phleum pratense ) strain S 50 . The root surfaces of the three grasses had the highest percentage of isolates capable of producing capsule and/or slime material (particularly the latter) when compared with the rhizosphere soil and non‐rhizosphere soil. Infra‐red and paper chromatographic analyses of the extracellular material showed that the ability to produce fructosans was commoner in isolates from the root surface.