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BibTeX
Encapsulation of plant growth-promoting bacteria in alginate beads enriched with humic acid
Biotechnology and bioengineering, 2006-09, Vol.95 (1), p.76-83
Young, Chiu-Chung
Rekha, P.D.
Lai, Wei-An
Arun, A.B.
2006
Details
Autor(en) / Beteiligte
Young, Chiu-Chung
Rekha, P.D.
Lai, Wei-An
Arun, A.B.
Titel
Encapsulation of plant growth-promoting bacteria in alginate beads enriched with humic acid
Ist Teil von
Biotechnology and bioengineering, 2006-09, Vol.95 (1), p.76-83
Ort / Verlag
Hoboken: Wiley Subscription Services, Inc., A Wiley Company
Erscheinungsjahr
2006
Link zum Volltext
Quelle
Wiley Online Library Journals Frontfile Complete
Beschreibungen/Notizen
The key to achieving successful, reproducible results following the introduction of beneficial microbes into soil relies on the survival rate of the inoculated bacteria in a heterogeneous soil environment and hence an improved encapsulation method was developed. Owing to the constraints associated with the inoculum formulation, in this study, encapsulation of a plant growth promoting bacteria (PGPB) isolate Bacillus subtilis CC‐pg104 was attempted with alginate by enriching the bead microenvironment with humic acid. High viability of the encapsulated bacteria was observed with minimum cell loss upon storage for 5 months. Steady and constant cell release from the bead was observed for 1 week at different pH. Encapsulated cells remained active as evidenced by their ability to solubilize calcium phosphate in vitro. Successful plant growth promotion of lettuce by the encapsulated bacteria under gnotobiotic and sterile environment was also achieved. Feasibility of this improved encapsulation technique is mainly due to the dual benefits of humic acid to microbe and plant and its chemical properties allowing an easy mixing with alginate without interfering in the formation of the alginate gel beads by cross‐linking with Ca2+ ions. Thus, the encapsulation method described in this study can be effectively used to protect the PGPB inoculum from adverse conditions of the soil for their successful establishment in the rhizosphere. © 2006 Wiley Periodicals, Inc.
Sprache
Englisch
Identifikatoren
ISSN: 0006-3592
eISSN: 1097-0290
DOI: 10.1002/bit.20957
Titel-ID: cdi_proquest_miscellaneous_68796461
Format
–
Schlagworte
Acids
,
alginate
,
Alginates - chemistry
,
Bacillus subtilis
,
Bacillus subtilis - physiology
,
Bacteria
,
Biological and medical sciences
,
Biotechnology
,
Cell Culture Techniques - methods
,
Cells
,
encapsulation
,
Fundamental and applied biological sciences. Psychology
,
Glucuronic Acid - chemistry
,
Hexuronic Acids - chemistry
,
humic acid
,
Humic Substances - microbiology
,
Lactuca - growth & development
,
Lactuca - microbiology
,
Lettuce
,
Lettuce plant
,
Microspheres
,
Plant growth
,
plant growth promoting bacteria
,
Soil Microbiology
,
Soils
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