Premium
Observations on the Effect of Inoculating Cassava ( Manihot esculenta ) Plantlets with Fluorescent Pseudomonads
Author(s) -
Hernandez J. M.,
Laberry R.,
Lozano J. C.
Publication year - 1986
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1986.tb04355.x
Subject(s) - biology , inoculation , rhizosphere , pseudomonas putida , pseudomonas fluorescens , shoot , erwinia , horticulture , pseudomonas , sowing , cultivar , botany , bacteria , genetics
Some 136 isolates of fluorescent pseudomonads were isolated from the rhizosphere of plants growing in 5 different ecosystems. Thirty‐four percent of these isolates inhibited the causal agent of cassava stem rot, Erwinia carotovora pv. carotovora, in vitro. One month old plantlets, produced by rooting the shoots of 4 cultivars in distilled water, were inoculated with a suspension (1.1 × 10 9 cells/ml) of each pseudomonad. Some isolates increased root weight by 95% over uninoculated controls two months after planting when inoculated at planting, and 15, and 30 days afterwards. Inoculated plants were free from symptoms of root pathogens and roots filled earlier than controls. Taxonomic studies showed that these bacterial isolates, were either Pseudomonas putida (90%) or P. fluorescens (10%).