Effect of Mineral Phosphate Solubilization on Biological Nitrogen Fixation by Diazotrophic Cyanobacteria

Yandigeri, Mahesh S.; Meena, Kamlesh K.; Srinivasan, R.; Pabbi, Sunil

doi:10.1007/s12088-011-0081-x

Cited by 24 publications

(15 citation statements)

References 9 publications

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“…Actinobacteria and Cyanobacteria were associated at high significance with DTP. Yandigeri et al [33] reported that Cyanobacteria were capable of dissolving inorganic phosphorus, and Streptomyces in Actinobacteria were capable of dissolving organic phosphorus. Therefore, from the results of this study, it is speculated that the changes in the overlying water DTP in Sancha Lake were partly due to the dissolution of inorganic and organic phosphorus by Actinobacteria and Cyanobacteria, respectively, releasing DTP into the overlying water.…”

Section: Resultsmentioning

confidence: 99%

Microbial Community Structure in the Sediments and Its Relation to Environmental Factors in Eutrophicated Sancha Lake

Yong

Zhang

et al. 2019

IJERPH

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To study the microbial community structure in sediments and its relation to eutrophication environment factors, the sediments and the overlying water of Sancha Lake were collected in the four seasons. MiSeq high-throughput sequencing was conducted for the V3–V4 hypervariable regions of the 16S rRNA gene and was used to analyze the microbial community structure in sediments. Pearson correlation and redundancy analysis (RDA) were conducted to determine the relation between microbial populations and eutrophic factors. The results demonstrated four main patterns: (1) in the 36 samples that were collected, the classification annotation suggested 64 phyla, 259 classes, 476 orders, 759 families, and 9325 OTUs; (2) The diversity indices were ordered according to their values as with summer > winter > autumn > spring; (3) The microbial populations in the four seasons belonged to two distinct characteristic groups; (4) pH, dissolved oxygen (DO), total phosphorus (TP), and total nitrogen (TN) had significant effects on the community composition and structure, which further affected the dissolved total phosphorus (DTP) significantly. The present study demonstrates that the microbial communities in Sancha Lake sediments are highly diverse, their compositions and distributions are significantly different between spring and non-spring, and Actinobacteria and Cyanobacteria may be the key populations or indicator organisms for eutrophication.

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Section: Resultsmentioning

confidence: 99%

Microbial Community Structure in the Sediments and Its Relation to Environmental Factors in Eutrophicated Sancha Lake

Yong

Zhang

et al. 2019

IJERPH

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“…The phosphate solubilizing microbes also facilitate growth through other mechanisms [138][139][140]35] as shown in Fig. 2.…”

Section: Exploitating the Microbes In P Nutritionmentioning

confidence: 99%

Mineral Phosphate Solubilization: Concepts and Prospects in Sustainable Agriculture

Krishnaraj¹,

Dahale²

2014

Proceedings of the Indian National Science Academy

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Microorganisms play very important role in biogeochemical cycle in soil, which reflects the plant growth and influence the agricultural production. Phosphate solubilizing microorganisms (PSM) are very important to the plants under phosphorus stress. As we know, Phosphorus is one of the essential macronutrients, along with nitrogen, required by the plants for their vital functions and survival. But, the efficiency of phosphatic fertilizers is very low due to their fixation in both acidic and alkaline soils which are predominant in India. Therefore, the inoculation of mineral phosphate solubilizers and other useful microbial inoculants in these soils would play an important role to restore the overall balance of nutrients and health of the soil to sustain it for posterity. The molecular genetics and mechanism of mineral phosphate solubilization and their efficiency in releasing phosphates for plant uptake is seemingly different and varies with microorganisms. Hence, the isolation and characterization of superior strains of mineral phosphate solubilizers to suit different soil types is imperative. These phosphate-solubilizing bacteria have the capacity to convert the insoluble forms of phosphorus into its soluble fo rm, wh i ch u l t i mat el y get s avai l ab l e t o p l an t s, a p h en o men o n o ft en referred t o as mi n eral p h o sp h at e so l u b i l i sat i o n . Th e combination of chemical fertilizers with this beneficial microorganism is also one of the ways to increase the agricultural y i e l d w i t h o u t l o s s o f n u t r i e n t s . M o r e o v e r , t h e d e v e l o p m e n t s o f c o m m e r c i a l b i o i n o c u l a n t s w i l l b e g r e a t l y a c c e p t e d b y farmers an d wi l l h el p t o mai n t ai n agri cu l t u re su st ai n ab i l i t y. Th e p resen t art i cl e d escri b es t h e p ro gress o f research i n t h i s area and future insights about use of such biophores in agriculture.

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“…Despite these proposals, it is still ambiguous with regard to defi nite operative method of P solubilization by cyanobacteria. In a recent study, Westiellopsis prolifi ca and Anabaena variabilis were shown solubilize TCP and MRP (Yandigeri et al 2011 ). Further, it was demonstrated that P solubilization was due to the production and action of phthalic acid without any decrease in pH.…”

Section: Cyanobacteria P Solubilizationmentioning

confidence: 94%

Phosphate-Solubilizing Microorganisms: A Critical Review

Kishore

Pindi

Reddy

2015

Plant Biology and Biotechnology

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Nitrogen (N), phosphorus (P) and potassium (K) are the three important nutrients required by any plant for healthy growth. Among these, P stands as the second limiting nutrient next to nitrogen. Even though different forms of P are abundantly present in soil, its availability in plant-utilizable form is limited. This defi ciency is usually compensated by adding chemical fertilizers. However, the chemical fertilizers are expensive and are not eco-friendly. Nonjudicious and irregular usage for a long time leads to decreased soil activity and soil microfl ora leading to imbalance in equilibrium. Usage of microorganisms to augment the P availability is the best alternative. Phosphate-solubilizing microorganisms (PSMs) when applied in appropriate numbers into the rhizosphere help the plant by supplementing P in plant-utilizable form by several mechanisms. In addition, few PSMs also possess added features as plant growth-promoting rhizobacteria (PGPR) and biocontrol agents conferring protection from phytopathogens. Improvement in soil characters by PSMs is an added advantage. Recent advances in technology paved the way for modifying PSMs with desired qualities. In spite of these, several areas in this area of research suffer different lacunae. Efforts are being made to discuss all major areas pertaining to PSMs in the present review.

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Effect of Mineral Phosphate Solubilization on Biological Nitrogen Fixation by Diazotrophic Cyanobacteria

Cited by 24 publications

References 9 publications

Microbial Community Structure in the Sediments and Its Relation to Environmental Factors in Eutrophicated Sancha Lake

Microbial Community Structure in the Sediments and Its Relation to Environmental Factors in Eutrophicated Sancha Lake

Mineral Phosphate Solubilization: Concepts and Prospects in Sustainable Agriculture

Phosphate-Solubilizing Microorganisms: A Critical Review

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