Abstract
In this study, a total of 50 rhizobial isolates were recovered from the root nodules of greengram plants. Of the 50 isolates, 9 bradyrhizobial strains namely, MRM1, MRM2, MRM3, MRM4, MRM5, MRM6, MRM7, MRM8, and MRM9, exhibiting a higher tolerance levels of 600, 800, 1,200, 1,000, 1,000, 1,600, 1,400, 1,400, and 1,000 μg ml−1, respectively, to triazole fungicide tebuconazole (chromatographically pure) were selected and tested for plant growth-promoting activities. Generally, the rhizobial strain with maximum fungicide-tolerance ability produced higher amounts of plant growth-promoting substances. Among the nine bacterial strains, Bradyrhizobium strain MRM6 was preferably selected due to its ability to tolerate tebuconazole maximally (up to 1,600 μg ml−1) on minimal salt agar medium. In addition, the strain MRM6 grew well in minimal salts medium supplemented with 100 (recommended), 200 (two times of the recommended), and 300 μg tebuconazole l−1 (three times of the recommended rate) and synthesized highest amounts of plant growth-promoting substances like indole acetic acid, siderophores, exopolysaccharides, hydrogen cyanate, and ammonia, both in the absence and presence of 100, 200, and 300 μg l−1 of tebuconazole. Following these properties, the strain MRM6 was used as inoculant and the inoculated greengram plants was raised in soils treated separately with recommended, two and three times the recommended dose of tebuconazole. Generally, tebuconazole at recommended and the higher rates decreased biomass, nodulation, nutrient-uptake, and grain yield of uninoculated greengram plants. Interestingly, Bradyrhizobium sp. (vigna) strain MRM6 when used with any concentration of tebuconazole, significantly increased the measured phyto-chemical-parameters of greengram plants when compared with those grown in soils treated exclusively (without inoculant) with tebuconazole. This study inferred that the strain MRM6 of Bradyrhizobium sp. (vigna) was compatible with tebuconazole and may be co-inoculated with this fungicide for enhancing the production of legumes especially greengram in soils poisoned with fungicides.
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Abbreviations
- CAS:
-
Chrome Azurol S
- DAS:
-
Days after seeding
- IAA:
-
Indole-3-acetic acid
- LB:
-
Luria Bertani
- MTL:
-
Maximum tolerance level
- YEM:
-
Yeast extract mannitol
References
Abd El-Ghany TM, Ahmed AT (2009) Efficacy of certain agrochemicals application at field rates on soil fungi and their ultrastructures. Res J Agric Biol Sci 5:150–160
Ahemad M, Khan MS (2010) Plant growth promoting activities of phosphate solubilizing Enterobacter asburiae as influenced by fungicides. EurAsia J BioSci 4:88–95
Ahemad M, Khan MS (2011) Assessment of plant growth promoting activities of rhizobacterium Pseudomonas putida under insecticide stress. Microbiol J 1:54–64
Alexander DB, Zuberer DA (1991) Use of chrome azurol S reagents to evaluate siderophore production by rhizosphere bacteria. Biol Fertil Soils 12:39–45
Ayansina ADV (2009) Pesticide use in agriculture and microorganisms. In: Khan MS, Zaidi A, Musarrat J (eds) Microbes in sustainable agriculture. Nova Science Publishers, Inc., New York, pp 261–284
Bakker AW, Schipper B (1987) Microbial cyanide production in the rhizosphere in relation to potato yield reduction and Pseudomonas spp mediated plant growth stimulation. Soil Biol Biochem 19:451–457
Becker A, Pühler A (1998) Production of exopolysaccharides. In: Spaink HP, Kondorosi A, Hooykaas PJJ (eds) Rhizobiaceae. Kluwer, Dordrecht, pp 97–118
Borthakur D, Johnston AWB (1987) Sequence of psi, a gene of the symbiotic plasmid of Rhizobium phaseoli which inhibits exopolysaccharide synthesis and nodulation and demonstration that its transcription is inhibited by psr, another gene on the symbiotic plasmid. Mol Gen Genet 207:149–154
Brick JM, Bostock RM, Silversone SE (1991) Rapid in situ assay for indole acetic acid production by bacteria immobilized on nitrocellulose membrane. Appl Environ Microbiol 57:535–538
Cernohlavkova J, Jarkovsky J, Hofman J (2009) Effects of fungicides mancozeb and dinocap on carbon and nitrogen mineralization in soils. Ecotoxicol Environ Safety 72:80–85
Chen YK, Batley M, Redmond JW, Rolfe BG (1985) Alteration of the effective nodulation properties of a fast growing broad host range Rhizobium due to change in exopolysaccharides synthesis. J Plant Physiol 120:331–349
David LJ, Rick LB, Jack EB, Johnson PD, Brian MR, Virginia LC (2006) Compatibility of in-furrow application of acephate, inoculant and tebuconazole in peanut (Arachis hypogaea L.). Peanut Sci 33:112–117
Dubey RC, Maheshwari DK, Kumar H, Choure K (2010) Assessment of diversity and plant growth promoting attributes of rhizobia isolated from Cajanus cajan L. Afr J Biotechnol 9:8619–8629
Dunfield KE, Siciliano SD, Germida JJ (2000) The fungicides thiram and captan affect the phenotypic characteristics of Rhizobium leguminosarum strain C1 as determined by FAME and Biolog analyses. Biol Fertil Soils 31:303–309
Dye DW (1962) The inadequacy of the usual determinative tests for the identification of Xanthomonas spp. Nat Sci 5:393–416
Fox JE, Gulledge J, Engelhaupt E, Burow E et al (2007) Pesticides reduce symbiotic efficiency of nitrogen-fixing rhizobia and host plants. PNAS 104:10282–10287
Gaind S, Rathi MS, Kaushik BD, Nain L et al (2007) Survival of bio-inoculants on fungicides-treated seeds of wheat, pea and chickpea and subsequent effect on chickpea yield. J Environ Sci Health B 42:663–668
Gordon S, Weber RP (1951) The colorimetric estimation of IAA. Plant Physiol 26:192–195
Guene NFD, Diouf A, Gueye M (2003) Nodulation and nitrogen fixation of field grown common bean (Phaseolus vulgaris) as influenced by fungicide seed treatment. Afr J Biotechnol 2:198–201
Holt JG, Krieg NR, Sneath PHA, Staley JT et al (1994) Bergey’s manual of determinative bacteriology. Williams and Wilkins, Balitmore
Iswaran V, Marwah TS (1980) A modified rapid Kjeldahl method for determination of total nitrogen in agricultural and biological materials. Geobioscience 7:281–282
Jackson ML (1967) Soil chemical analysis. Prentice-Hall of India, New Delhi
Janczarek M, Skorupska A (2007) The Rhizobium leguminosarum bv. trifolii RosR:transcriptional regulator involved in exopolysaccharide production. Mol Plant Microbes Interact 20:867–881
Kaur C, Maini P, Shukla NP (2007) Effect of captan and carbendazim fungicides on nodulation and biological nitrogen fixation in soybean. Asian J Exp Sci 21:385–388
Kishorekumar A, Abdul Jaleel C, Manivannan P, Sankar B, Sridharan R, Panneerselvam R (2007) Comparative effects of different triazole compounds on growth, photosynthetic pigments and carbohydrate metabolism of Solenostemon rotundifolius. Colloids Surf B Biointerfaces 60:207–212
Kloepper JW, Leong J, Teintze M, Schroth MN (1980) Enhanced plant growth by siderophores produced by plant growth promoting rhizobacteria. Nature 286:885–886
Kumari BS, Ram MR, Mallaiah KV (2009) Studies on exopolysaccharide and indole acetic acid production by Rhizobium strains from Indigofera. Afr J Microbiol Res 3:10–14
Kyei-Boahen S, Slinkard AE, Walley FL (2001) Rhizobial survival and nodulation of chickpea as influenced by fungicide seed treatment. Can J Microbiol 47:585–589
Leigh JA, Singer ER, Walker GC (1988) Exopolysaccharide deficient mutants of Rhizobium meliloti that form ineffective nodules. PNAS 82:6231–6235
Mohapatra S, Ahuja AK, Deepa M, Jagadish GK, Prakash GS, Kumar S (2010) Behaviour of trifloxystrobin and tebuconazole on grapes under semi-arid tropical climatic conditions. Pest Manag Sci 66:910–915
Mody BR, Bindra MO, Modi VV (1989) Extracellular polysaccharides of cowpea rhizobia: compositional and functional studies. Arch Microbiol 1:2–5
Morgante JWM, Otieno PE, Cheminingwa GN, Nderitu JH et al (2007) Effect of legume root rot pathogens and fungicide seed treatment on nodulation and biomass accumulation. J Biol Sci 7:1163–1170
Perret X, Staehelin C, Broughton W (2000) Molecular basis of symbiotic promiscuity. Microbiol Mol Biol Rev 64:180–201
Phipps PM (2003) The response of CBR-susceptible and -resistant cultivars to preplant treatment with metam and in-furrow application of Folicur and Abound for disease management, 2002. F&N Reports 58:FC020
Revellin C, Leterme P, Catroux G (1993) Effect of some fungicide treatments on the survival of some Bradyrhizobium japonicum and on the nodulation and yield of soybean (Glycine max L. Merr). Biol Fertil Soils 16:211–214
Reeves MW, Pine L, Neilands JB, Balows A (1983) Absence of siderophore activity in Legionella species grown in iron-deficient media. J Bacteriol 154:324–329
Rolfe BG, Carlson RW, Ridge RW, Dazzo RW, Mateos FB, Pankhurst CE (1996) Defective infection and nodulation of clovers by exopolysaccharide mutants of Rhizobium leguminosarum bv. trifolii. Aust J Plant Physiol 23:285–303
Sadasivam S, Manikam A (1992) Biochemical methods for agricultural sciences. Wiley Eastern Limited, New Delhi
Shew BB (2006) Peanut disease management. In: 2006 Peanut Information. North Carolina Coop. Ext. Ser. AG-331, pp 79–104, 116
Singh N, Dureja P (2009) Effect of biocompost-amendment on degradation of triazoles fungicides in soil. Bull Environ Contam Toxicol 82:120–123
Somasegaran P, Hoben HJ (1994) Handbook for Rhizobia: methods in legume Rhizobium technology. Springer, Berlin
Spaink HP (2000) Root nodulation and infection factors produced by rhizobial bacteria. Annu Rev Microbiol 54:257–288
Tomlin CDS (1997) The pesticide manual. The British Crop Protection Council, Surrey
van Workum WA, Canter Cremers HCJ, Wijfjes AHM, van der Kolk C, Wijffelman CA, Kijne JW (1997) Cloning and characterization of four genes of Rhizobium leguminosarum bv. trifolii involved in exopolysaccharide production and nodulation. Mol Plant Microbe Interact 10:290–301
Vincent JM (1970) A manual for the practical study of root nodule bacteria. Blackwell Scientific Publications, Oxford
Wani PA, Khan MS, Zaidi A (2008) Chromium-reducing and plant growth-promoting Mesorhizobium improves chickpea growth in chromium-amended soil. Biotechnol Lett 30:159–163
Yang C, Lee C (2008) Enrichment, isolation, and characterization of 4-chlorophenol-degrading bacterium Rhizobium sp. 4-CP-20. Biodegradation 19:329–336
Zablotowicz RM, Reddy KN (2004) Impact of glyphosate on the Bradyrhizobium japonicum symbiosis with glyphosate-resistant transgenic soybean: a minireview. J Environ Qual 33:825–831
Zahran HH (1999) Rhizobium-legume symbiosis and nitrogen fixation under severe conditions and in an arid climate. Microbiol Mol Biol Rev 63:968–989
Acknowledgments
The authors thank Dr. N. A. Naqvi, Parijat Agrochemicals, New Delhi, India, for providing technical grade fungicides. Financial assistance from University Grants Commission (UGC), New Delhi, India is also gratefully acknowledged.
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Ahemad, M., Khan, M.S. Productivity of greengram in tebuconazole-stressed soil, by using a tolerant and plant growth-promoting Bradyrhizobium sp. MRM6 strain. Acta Physiol Plant 34, 245–254 (2012). https://doi.org/10.1007/s11738-011-0823-8
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DOI: https://doi.org/10.1007/s11738-011-0823-8