Ecological significance and phosphorus release potential of phosphate solubilizing bacteria in freshwater ecosystems

Maitra, Nilanjan; Manna, Sanjib Kumar; Samanta, Srikanta; Sarkar, Keka; Debnath, Dipesh; Bandopadhyay, Chinmay; Sahu, Sanjeev Kumar; Sharma, A. P.

doi:10.1007/s10750-014-2094-z

Cited by 41 publications

(14 citation statements)

References 34 publications

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“…Phosphate solubilization is another important trait of PGPR and the isolates of the current study revealed a significant release of PO 4 3- from insoluble complex TCP. The findings of the current study are in agreement with numerous published literatures reporting solubilization of phosphate by Bacillus, Pseudomonas , and Azotobacter (Ahmad et al, 2008; Bhattacharyya and Jha, 2012; Panwar et al, 2014; Maitra et al, 2015). Besides providing phosphorous to the plants, the PSBs also enhance the plant’s growth by stimulating nitrogen fixation, enhancing availability of trace metals and by formation of plant growth hormones (Kumar et al, 2013).…”

Section: Discussionsupporting

confidence: 93%

ACC Deaminase Producing Bacteria With Multifarious Plant Growth Promoting Traits Alleviates Salinity Stress in French Bean (Phaseolus vulgaris) Plants

2019

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Plant growth promoting rhizobacteria (PGPR) with 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity has the potential to promote plant growth and development under adverse environmental conditions. In the present study, rhizobacterial strains were isolated from Garlic ( Allium sativum ) rhizosphere and were screened in vitro ACC deaminase activity in DF salt minimal media supplemented with 3 mM ACC. Out of six isolates, two could degrade ACC into α-ketobutyrate, exhibiting ACC deaminase activity producing more than ∼1500 nmol of α-ketobutyrate mg protein -1 h -1 , and assessed for other plant growth promoting (PGP) functions including indole acetic acid production (greater than ∼30 μg/ml), siderophore, Ammonia, Hydrogen cyanide production and inorganic Ca 3 (PO 4 ) 2 (∼85 mg/L) and ZnSO 4 solubilization. Besides facilitating multifarious PGP activities, these two isolates augmented in vitro stress tolerance in response to 6% w/v NaCl salt stress and drought stress (-0.73 Mpa). The strains ACC02 and ACC06 were identified Aneurinibacillus aneurinilyticus and Paenibacillus sp., respectively on the basis of 16S rDNA gene sequence analysis and were evaluated for growth promoting potential in French bean seedlings under non-saline and salinity stress conditions through pot experiments. The seed bacterization by ACC02 and ACC06 revealed that treatment of plants with bacterial isolates in the form of consortia significantly declined (∼60%) stress stimulated ethylene levels and its associated growth inhibition by virtue of their ACC deaminase activity. The consortia treatment alleviated the negative effects of salinity stress and increased root length (110%), root fresh weight (∼45%), shoot length (60%), shoot fresh weight (255%), root biomass (220%), shoot biomass (425%), and total chlorophyll content (∼57%) of French bean seedlings subjected to salinity stress.

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Section: Discussionsupporting

confidence: 93%

ACC Deaminase Producing Bacteria With Multifarious Plant Growth Promoting Traits Alleviates Salinity Stress in French Bean (Phaseolus vulgaris) Plants

2019

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“…However, phosphorus is an essential element for crop growth, while it is also an unwanted nutrient in some freshwater ecosystems (Maitra et al 2014), substantially contributing to the level of eutrophication and harmful algal bloom formation.…”

Section: Response Of Cabbage Quality To Amendment Additionmentioning

confidence: 99%

The application of soil amendments benefits to the reduction of phosphorus depletion and the growth of cabbage and corn

Liu

Kerr

et al. 2015

Environ Sci Pollut Res

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The loss of phosphorus from agricultural intensive areas can cause ecological problems such as eutrophication in downstream surface waters. Therefore, the purpose of this study is to control the phosphorus loss using environmentally benign soil amendments, viz, ferrous sulfate (FES), aluminum sulfate (ALS), and polyacrylamide (PAM). The phosphorus concentration changes in soil and leaching solution, the morphological index of plant (including stem and root), and root activity and quality (represented by chlorophyll and soluble sugar) at different growth stages of cabbage (Brassica oleracea L. var. capitata L.) were monitored in a pilot experiment. Phosphorus contents in soil and runoff were also investigated in field experiments cultivated with corn (Zea mays L.). The results show that the application of these amendments improved the phosphorus uptake by cabbage and corn, resulting in the enhanced morphologies of root and stem as well as the root activity at the early and middle stages of cabbage growth. The soil total phosphorus and available phosphorus in soils treated with FES, ALS, and PAM declined, resulting in lower concentrations of phosphorus in the leachate and the soil runoff. During the use of the soil amendments, the cabbage quality measures, determined as chlorophyll and soluble sugar in leaves, were not significantly different from those in the control. It is suggested that the application of these soil amendments is safe for cabbage production under single season cropping conditions, and the use of these three amendments is a promising measure to reduce phosphorus loss in intensive agricultural areas.

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“…Phosphorus (P) is a limiting nutrient in some freshwater and coastal marine ecosystems (Gregoracci et al 2012;Maitra et al 2015). According to Strojsová et al (2003) and Reynolds (2006), the enzymatic production of phosphatases, which hydrolyze dissolved organic compounds, is an important physiological trait that allows some species to endure conditions of limited phosphate.…”

Section: Introductionmentioning

confidence: 99%

Intraspecific variation in alkaline phosphatase activity in Phaeodactylum tricornutum (Bacillariophyceae, Bohlin)

et al. 2016

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To describe potential intraspecifi c variation in phosphorus incorporation in two strains of Phaeodactylum tricornutum (Bohlin), Ub3 and Ub7, alkaline phosphatase (AP) activity was evaluated via enzyme-labeled fl uorescence assay. Analysis using the probe ELF-97 ® provides individual evaluation, and therefore can determine the nutritional status of inorganic phosphorus in phytoplanktonic cells. Bioassays compared the control treatment to both phosphateenriched and phosphate-depleted treatments by varying only the phosphate concentration in the media. Th e P. tricornutum strains exhibited diff erences in their development when incubated in the phosphate-enriched media. Th e development of the Ub7 strain diff ered by exhibiting "luxury uptake" and utilization of organic phosphorus, and the alkaline phosphatase analysis indicated limitations of this clone under such conditions. Th e Ub7 strain showed higher AP activity, when compared to Ub3, in the P-enriched condition. P. tricornutum presented increases in AP activity and low variation in Surface/Volume ratio, by increasing biovolume and its maximum linear dimension, as strategies for phosphate incorporation. Our results highlight intraspecifi c diff erences in alkaline phosphatase activity, and hence diff erences in the incorporation of organic phosphorus, as the tested species regulated enzymatic activity under diff erent external phosphate concentrations.

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Ecological significance and phosphorus release potential of phosphate solubilizing bacteria in freshwater ecosystems

Cited by 41 publications

References 34 publications

ACC Deaminase Producing Bacteria With Multifarious Plant Growth Promoting Traits Alleviates Salinity Stress in French Bean (Phaseolus vulgaris) Plants

ACC Deaminase Producing Bacteria With Multifarious Plant Growth Promoting Traits Alleviates Salinity Stress in French Bean (Phaseolus vulgaris) Plants

The application of soil amendments benefits to the reduction of phosphorus depletion and the growth of cabbage and corn

Intraspecific variation in alkaline phosphatase activity in Phaeodactylum tricornutum (Bacillariophyceae, Bohlin)

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