C
Characterization o
Candida
Arti S. Shanware
Rajiv Gandhi Biotechnology C
Laxminarayan Institute of Technolo
Rashtrasant Tukdoji Maharaj Nagpu
Amaravati Road, Nagpur - 440033, Ma
E-mail: artishanware@gmail
Tel.: 0712-2560620. 2536223; Fax: 0712-
Abstract – The rhizospheric speci
Pseudomonas are the eminent biological co
are not only known for alternative to
controlling plant diseases but also prom
Amongst the PGPRs, fluorescent Pseudom
as the largest and potentially the most p
PGPR, because of their potential to act a
biofertilizing agents. In the present
Pseudomonas (FP) isolates FP-1, FP-2 and
from the rhizospheric soil of Cotton
Shivasawanga located in Nagpur distr
India. The isolates were subjected to stand
microbiological, biochemical profilin
characterized for molecular analysis. O
rRNA analysis, nucleotide homology
analysis the strains FP-1, FP-2 and FP-3
Pseudomonas fluorescens strains. The
developing liquid biofertilizer by using
strains of fluorescent Pseudomonas. By
liquid biofertilizer, the better yield of cro
region can be achieved.
Keywords – Biological Control, Fluores
PGPR, Rhizobacteria, Antagonism.
I. INTRODUCTION
Biological method for control of plan
a highly effective, economical and envir
alternative to the use of synthetic ferti
intensive use of chemical fertilizers for p
against phytopathogens which are develo
plant pathogens as well as demolishin
hence the use of biological methods
approach in modern agriculture pract
naturally occurring soil organisms inc
Pseudomonas promote the growth of
variety of mechanisms. Fluorescent Pseu
to plant growth promoting rhizobacter
actively colonize plant roots and promo
direct or indirect mechanism [5]. Dire
plant growth includes production of ph
solubilization of phosphate and other m
their indirect mechanism includes produ
[8] and siderophore [9] which are
phytopathogens. Fluorescent Pseud
biocontrol by production of antibiot
diacetylphloroglucinol (PHL), pyo
pyrrolnitrin (PRN), phenazine-1-carbox
2- hydroxy phenazines and phenazi
Copyright © 2014 IJAIR, All right reserved
1168
International Journal of Agriculture I
Volume 2, Issue 6,
of Fluorescent Pseudomon
ates for Liquid Bioinocula
Centre,
ogy, Campus,
ur University,
aharashtra, India
l.com
2545781, 2532841
Ashwini S. D
Rajiv Gandhi Biotec
Laxminarayan Institute of
Rashtrasant Tukdoji Mahar
Amaravati Road, Nagpur - 44
ies of fluorescent
ontrol agents. These
agrochemicals for
mote plant growth.
monas have emerged
promising group of
as a biocontrol and
study fluorescent
d FP-3 were isolated
n fields of village
rict, Maharashtra,
dard morphological,
ng and further
On the basis of 16S
and phylogenetic
3 were identified as
e study aims at
g some competent
y formulating such
ops in the Vidarbha
scent Pseudomonas,
nt pathogens offers
ronmental friendly
ilizers [1]-[2]. The
protection of crops
oping resistance in
ng the soil health,
s is a significant
tices [3]-[4]. The
cluding fluorescent
f host plant by a
udomonas belongs
ria (PGPR), which
ote plant growth by
ect mechanism of
hytoharmones [6],
minerals [7], while
uction of antibiotics
e suppressive to
domonas achieve
tics such as 2,4-
oluteorin (PLT),
xyclic acid (PCA),
ine-1-carboxamide
(PCN) [10]. These antibiotics p
management as they inhibit t
concentration. In addition, to pr
they also induce a systemic resi
The use of biological control
diseases is one of the mos
sustainable agriculture de
Pseudomonas spp. offer an exc
range of phytopathogenic bact
that rhizospheric bacteria of a
efficient diseases controller
isolated from other plant sp
screening of locally adapted bi
[5]. The present study
characterization and evaluatio
fluorescent Pseudomonas spp.
commercial world.
II. MATERIALS A
2.1. Soil sampling and i
bacteria
Root adhering soil samples w
plant rhizospheric region grow
which is located near Nagpu
prepared by shaking 1g of so
undamaged root pieces with tig
of sterile distilled water and kep
to release the rhizoplane bacte
were serially diluted from 10
-1
suspension was spread on to K
agar plate and incubated at 28º
of fluorescent Pseudomonas wa
(356 nm) by using
Transilluminator. On these prel
three isolates namely FP1, FP
fluorescent Pseudomonas which
light ( fig. 1).
Fig.1. Fluorescent Pseudomon
Manuscript Processing Details (dd/mm/yyyy
Received : 06/06/2014 | Accepted on : 24/06
Innovations and Research
, ISSN (Online) 2319-1473
nas: Potential
ant
Darokar
chnology Centre,
Technology, Campus,
raj Nagpur University,
40033, Maharashtra, India
play a critical role in disease
the phytopathogens at low
roduce antimicrobial agents
istance in plants [10].
agents for controlling plant
st promising method for
evelopment. Fluorescent
cellent biocontrol against a
teria and fungi. It is noted
particular crop may be the
than bacteria originally
pecies [11]-[5]. Therefore,
iocontrol strains is essential
is based on isolation,
on of potential strains of
. for their intensive use in
AND METHODS
isolation of fluorescent
were collected from Cotton
wn in field of Shivasawanga
ur. A soil suspension was
oil sample having 2-3 cm
ghtly adhered soil in 100 ml
pt for 1hr on a rotary shaker
eria. The processed samples
to 10
-6
and 0.1 ml of the
King’s medium B ( KMB )
ºC for 48h. The occurrence
as examined under UV light
Spectroline Ultravoilet
liminary identification basis
P2, FP3 were identified as
h fluorescenced under UV-
nas isolates under UV light
y) :
6/2014 | Published : 29/06/2014