Abstract
Usage of biofertilizers is one of the important components of integrated nutrientmanagement, as they are renewable source of plant nutrients, ecologically safecompared to chemical fertilizers and cost effective. Silicate solubilizing bacteria(SSB) can play an efficient role not only in solubilizing insoluble forms of silicatesbut also potassium and phosphates, hence increasing soil fertility and therebyenhancing plant productivity. The aim of this study was to investigate the influenceof SSB-enriched biofertilizer on the structural and functional parameters ofphotosynthetic apparatus of Brassica juncea (L.) Czern. The pure culture of SSBwas isolated from the clay substrate, cultivated on Zak–Alexandrov medium andidentified as Bacillus sp. To obtain the biofertilizer, SSB culture (0.6*108 cfu mL-1)was mixed with steriled peat (1:1, v/w) and dried at 35–40°C. Plants were grownfrom seeds during two months in the pots with adding SSB-enriched biofertilizer tothe mixture of clay and soil (1:10, w/w). The clay substrate plus peat without SSBwas used as a control. It was found that addition of SSB-enriched biofertilizer toclay substrate significantly increased the content of total nitrogen, phosphorus andpotassium in the leaves of B. juncea. The thickness of mesophyllic layer and thenumber of mesophyll cells were increased on average by 24 %. It was correlatedwith a sharp increase of photosynthetic pigment content and CO2 uptake (1.5–2.0times). We can conclude that SSB-enriched biofertilizer improves thephotosynthetic function of B. juncea.
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Claims 3
Claim · model-written summary
SSB biofertilizer significantly increased leaf nitrogen, phosphorus and potassium.
- Taxon
- B. juncea
Brassica junceae0 - Organ / stage
- leavese0
- Treatment
- SSB-enriched biofertilizere0
- Outcome
- content of total nitrogen, phosphorus andpotassiume0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of SSB-enriched biofertilizer toclay substrate significantly increased the content of total nitrogen, phosphorus andpotassium in the leaves of B. juncea.”
Claim · model-written summary
Biofertilizer increased mesophyll thickness and cell number by about 24%.
- Taxon
- BRASSICA JUNCEABrassica junceat0
- Treatment
- SSB-enriched biofertilizere1
- Outcome
- thickness of mesophyllic layer and thenumber of mesophyll cellse0
- Direction
- increasede0
- Value
- 24 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The thickness of mesophyllic layer and thenumber of mesophyll cells were increased on average by 24 %.”
t0“BRASSICA JUNCEA”
e1“addition of SSB-enriched biofertilizer toclay substrate significantly increased the content of total nitrogen, phosphorus andpotassium in the leaves of B. juncea.”
Claim · model-written summary
Photosynthetic pigment content and CO2 uptake increased 1.5–2.0 times.
- Taxon
- B. junceaBrassica junceae1
- Treatment
- SSB-enriched biofertilizere1
- Outcome
- photosynthetic pigment content and CO2 uptakee0
- Direction
- increasee0
- Value
- 1.5–2.0timese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was correlatedwith a sharp increase of photosynthetic pigment content and CO2 uptake (1.5–2.0times).”
e1“addition of SSB-enriched biofertilizer toclay substrate significantly increased the content of total nitrogen, phosphorus andpotassium in the leaves of B. juncea.”
The same questions in other papers
inoculation · nutrient: content · Brassica juncea (Indian mustard)Positive and negative results
22 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
21 papers more in this group
See all 25 papers →inoculation · physiology: photosynthesis · Brassica juncea (Indian mustard)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.