Effect of Poly-β-Hydroxybutyrate (PHB) and Glycogen Producing Endophytic bacteria on yield, growth and nutrient contents in rice cultivated in saline soil
Journal Title: Applied Science Reports - Year 2014, Vol 8, Issue 3
Abstract
The saline soil is important problem in Egypt because of a wide areas are Influenced by salts that obstruct attempts to increase the cultivated land. The main problem in the saline soil is how to prepare suitable conditions for plants cultivation and it’s known that microorganisms could make a suitable root zone for seeds to diminish saline effect on the plant. The Poly-β-Hydroxybutyrate (PHB) and Glycogen produced by endophytic bacteria and Rhizobia as carbon storage polymers can support the survival and reproduction of these bacteria in adverse conditions (soil salinization) and improve tolerance to osmotic stress, hence these bacteria could increase the soil fertility, improve growth and the yield of crops to be a significant alternative to chemical fertilizers in agriculture. In this study strains of endophytic bateria Enterobacter aerogenens, ET.101(T), Enterobacter gergoviae, ET.111(S), Enterobacter aerogenens (L), ET.102 and Rhizobium leguminosarum bv. Viceae viz Icarda 441 (R) were examined for elevation plant resistance to soil salinity. Laboratory and field experiments were conducted and the Laboratory experiment showed that the amounts produced from Poly-B-hydroxybutyrate (PHB) and glycogen, were superior in strain (T) followed by strain (S), (R) and (L) respectively where the percentage of PHB in these cells was between 19.66 and 39.09 % of dry cell weight while the content of glycogen in these tested strains were ranged from 0.093 - 0.211 g/l. Strain (T) has progressed in enhanced stress resistance capability. In plant traits, results indicated that the high amount of PHB and glycogen producing by strain (T) improved the growth, grain yield and 1000 grain weight of rice, saving 50% N fertilizer. These treatments also significantly effected in pH, organic matter, and N, P, K content of the soil.
Authors and Affiliations
Amal A Ali, Khaled A Shaban , Eman A Tanawy
Keywords
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- EP ID EP142484
- DOI 10.15192/PSCP.ASR.2014.4.3.134142
- Views 71
- Downloads 0
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