Enhanced biomass and steviol glycosides in Stevia rebaudiana treated with phosphate-solubilizing bacteria and rock phosphate
IR@IHBT: CSIR-Institute of Himalayan Bioresource Technology, Palampur
View Archive Info| Field | Value | |
| Title |
Enhanced biomass and steviol glycosides in Stevia rebaudiana
treated with phosphate-solubilizing bacteria and rock phosphate
|
|
| Creator |
Gupta, Mamta
Bisht, Shashi Singh , Bikram Gulati, Arvind Tewari, R |
|
| Subject |
Plant sciences
|
|
| Description |
Biofertilizers offer alternative means to promoting
cultivation of medicinal plants less dependent on
chemical fertilizers. Present study was aimed at evaluating
the potential of phosphate-solubilizing bacteria (PSB)
Burkholderia gladioli MTCC 10216, B. gladioli MTCC
10217, Enterobacter aerogenes MTCC 10208 and Serratia
marcescens MTCC 10238 for utilizing Mussoorie rock
phosphate (MRP) to enhance plant growth, and stevioside
(ST) and rebaudioside-A (R-A) contents of Stevia rebaudiana.
The solubilization of MRP by PSB strains varied
from 1.4 to 15.2 lg ml-1, with the highest solubilization
by Enterobacter aerogenes 10208. The PSB treatment
increased the growth and ST and R-A contents of plants.
Plant growth and stevioside contents were more pronounced
with plants treated with a mixture of strains and
grown in MRP amended soil compared to the unamended
soil. The increment in shoot length (47.8%), root length
(17.4%), leaf dry weight (164%), stem dry weight (116%),
total shoot biomass (136%) resulted in enhanced productivity
of ST (291%) and R-A (575%) in plants inoculated
with mixture of PSB as compared to the uninoculated
plants. The soils of PSB treated plants contained more
available P than the soils of uninoculated plants (increase
of 86–576%). PSB inoculated plants also recorded higher P
content (64–273% increase) compared to uninoculated
plants. The PSB strains differed in the extent of rhizosphere
colonization, carbon source utilization pattern and whole
cell fatty acids methyl esters composition
|
|
| Date |
2011
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://ihbt.csircentral.net/1085/1/62_Enhanced_biomass.pdf
Gupta, Mamta and Bisht, Shashi and Singh , Bikram and Gulati, Arvind and Tewari, R (2011) Enhanced biomass and steviol glycosides in Stevia rebaudiana treated with phosphate-solubilizing bacteria and rock phosphate. Plant Growth Regul, 65. pp. 449-457. |
|
| Relation |
http://ihbt.csircentral.net/1085/
|
|