Abstract
Rapid advances in the field of pathogen detection have opened new opportunities and better understanding for their management approaches. Aim of this study was to elucidate histopathological observations of different tissues affected by Macrophomina phaseolina and to observe the defense responses of plant growth promoting rhizobacteria (PGPR) in mungbean plants. Sections of the stem and root were prepared and stained with ferric chloride, Lugol's iodine and Wiesner's reagent and were then observed under multiple microscopic techniques. Results revealed that both pathogen and PGPR produce responses on the plant that include colonization of xylem vessels by hyphae and sclerotia, hypertrophy and hyperplasia of the cells, destruction of xylem fibers and amyloplasts in parenchymatous cells; and production of gels by the plant were observed. There was a significant increase in lignin and phenolic compounds deposition in stem and root sections of PGPR treated and non-treated mungbean plants. Whereas the soil amended with PGPR showed very less to no starch production. Moreover, production of gels and gums were also observed in both stem and root sections. Compared to light microscopy, scanning electron microscope provided greater depth of focus and resolution of the pathogen attack on plant tissues, associated bacteria. As a whole, the data demonstrated that inoculation of PGPR can be an effective strategy to stimulate plant growth and they could significantly activate disease resistance against M. phaseolina.
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Claims 7
Claim · model-written summary
Pathogen colonization of xylem and cellular damage were observed.
- Taxon
- Vigna radiata
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Vigna radiatat0 - Interactor
- necrotrophic fungust0pathogen
- Outcome
- colonization of xylem vessels by hyphae and sclerotia, hypertrophy and hyperplasia of the cells, destruction of xylem fibers and amyloplastse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“colonization of xylem vessels by hyphae and sclerotia, hypertrophy and hyperplasia of the cells, destruction of xylem fibers and amyloplasts in parenchymatous cells”
t0“necrotrophic fungus and PGPR on the comparative histochemistry of Vigna radiata”
Claim · model-written summary
Lignin and phenolic deposition increased significantly in stem and root sections.
- Taxon
- mungbeanVigna radiatae0
- Organ / stage
- stem and root sectionse0
- Treatment
- PGPR treated and non-treatede0
- Interactor
- PGPRe0symbiont
- Outcome
- lignin and phenolic compounds depositione0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant increase in lignin and phenolic compounds deposition in stem and root sections of PGPR treated and non-treated mungbean plants”
Claim · model-written summary
PGPR amended soil had little or no starch production.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- soil amended with PGPRe0
- Interactor
- PGPRe0symbiont
- Outcome
- starch productione0
- Direction
- very less to noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil amended with PGPR showed very less to no starch production”
t0“Vigna radiata”
Claim · model-written summary
Gels and gums were observed in stem and root sections.
- Taxon
- Vigna radiataVigna radiatat0
- Organ / stage
- stem and root sectionse0
- Outcome
- production of gels and gumse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“production of gels and gums were also observed in both stem and root sections”
t0“Vigna radiata”
Claim · model-written summary
Scanning electron microscopy gave greater depth of focus and resolution than light microscopy for tissue attack.
- Taxon
- Vigna radiataVigna radiatat0
- Outcome
- depth of focus and resolutione0
- Direction
- greatere0
- Comparator
- light microscopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to light microscopy, scanning electron microscope provided greater depth of focus and resolution of the pathogen attack on plant tissues, associated bacteria”
t0“Vigna radiata”
Claim · model-written summary
Authors interpret PGPR inoculation as stimulating growth and disease resistance.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- inoculation of PGPRe0
- Interactor
- M. phaseolina
Macrophomina phaseolinae0pathogen - Second interactor
- PGPRe0symbiont
- Outcome
- plant growthe0
- Direction
- stimulatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation of PGPR can be an effective strategy to stimulate plant growth and they could significantly activate disease resistance against M. phaseolina”
t0“Vigna radiata”
Claim · model-written summary
Authors interpret PGPR inoculation as activating resistance to M. phaseolina.
- Taxon
- Vigna radiataVigna radiatat0
- Treatment
- inoculation of PGPRe0
- Interactor
- M. phaseolinaMacrophomina phaseolinae0pathogen
- Second interactor
- PGPRe0symbiont
- Outcome
- disease resistance against M. phaseolinae0
- Direction
- activatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation of PGPR can be an effective strategy to stimulate plant growth and they could significantly activate disease resistance against M. phaseolina”
t0“Vigna radiata”
The same questions in other papers
inoculation · Macrophomina phaseolina · Vigna radiata (mung bean)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.