Resumo
Potassium is one of the important key elements in terms
of quantitative plant requirement. Although it is abundant in soils, in
both organic and inorganic forms, but its availability is restricted as
it occurs mostly in insoluble forms. Soil bacteria inhabiting
around/on the root surface and facilitate the plant growth by various
methods has been isolated from the paddy rhizosphere. Among
many isolates, two isolates Bacillus pumilus and Pseudomanas
pseudoalcaligenes were evaluated for their ability to solubilize
potassium to help plant in its growth promotion in the greenhouse
condition. Selected bacteria were analysed for their potassium
solubilizing ability on different sources and also for various growth
related physiology including accumulation of carbohydrate as
osmoprotectant under saline stress. Potassium solubilizing bacteria
(KMB) protect the plants from salinity injury by enhancing its
growth related physiology like, stomatal conductance, electrolyte
leakage and lipid peroxidation. Plant inoculated with potassium
mobilizing bacteria (KMB) also accumulate more type and number
of soluble carbohydrates analyzed by GCMS analysis in leaves
under salinity, which helps the plant to overcome osmotic stress.
Referências
- Bhattacharyya, P. N., Jha, D. Plant growth
- promoting rhizobacteria (PGPR): emergence in
- agriculture. World Journal of Microbiology
- and Biotechnology, v. 28, no. 4, p. 1327-1350,
- https://doi.org/10.1007/s11274-011-0979-9
- Chakraborty, U.; Roy, S.; Chakraborty, A.;
- Pratim, D. P.; Chakraborty, B. Plant growth
- promotion and amelioration of salinity stress in
- crop plants by a salt-tolerant bacterium. Recent
- Research in Science and Technology, v. 3,
- no. 11, p. 61-70, 2011. <https://scienceflora.org/
- journals/index.php/rrst/article/view/824/808>.
- Accessed on: Jun. 20, 2017.
- Collavino, M. M.; Sansberro, P. A.; Mroginski,
- L. A.; Aguilar, O. M. Comparison of in vitro
- solubilization activity of diverse potassium
- solubilizing bacteria native to acid soil and their
- ability to promote Phaseolus vulgaris growth.
- Biology and Fertility of Soils, v. 46, p. 727
- , 2010. https://doi.org/10.1007/s00374-010
- -x
- Couée, I.; Sulmon, C.; Gwenola, G.; El Amrani,
- A. Involvement of soluble sugars in reactive
- oxygen species balance and responses to
- oxidative stress in plants. Journal of
- Experimental Bototany, v. 57, p. 449-459,
- https://doi.org/10.1093/jxb/erj027
- Egilla, J. N.; Davies, F. T.; Boutton, T. W.
- Drought stress influences leaf water content,
- photosynthesis, and water-use efficiency of
- hibiscus Rosa sinensis at three potassium
- concentrations. Photosynthetica, v. 43, p. 135
- , 2005. https://doi.org/10.1007/s11099-005
- -2
- Jha, Y.; Subramanian, R. B.; Patel, S.
- Combination of endophytic and rhizospheric
- plant growth promoting rhizobacteria in Oryza
- sativa
- shows higher accumulation of
- osmoprotectant against saline stress. Acta
- Physiologiae Plantarum, v. 33, no. 3, p. 797
- , 2011. https://doi.org/10.1007/s11738-010
- -9
- Jha, Y.; Subramanian, R. B. Root associated
- bacteria from the rice antagonizes the growth of
- Magnaporthe grisea. Journal of Plant
- Pathology & Microbiology, v. 4, no. 2, 2013a.
- https://doi.org/10.4172/2157-7471.1000164
- Jha, Y.; Subramanian, R.B. Paddy physiology
- and enzymes level is regulated by Rhizobacteria
- under saline stress. Journal of Applied Botany
- and Food Quality, v. 85, p. 168-173, 2013b.
- Available
- from:
- <https://ojs.openagrar.de/
- index.php/JABFQ/article/view/2317/2662>.
- Accessed on: May 22, 2017.
- Jha,
- Y.;
- Subramanian,
- R.B.
- a.
- Characterization of root-associated bacteria
- from paddy and its growth-promotion efficacy.
- Biotech,
- v. 4,
- no. 3,
- p. 325-330.
- https://doi.org/10.1007/s13205-013-0158-9
- Jha, Y.; Subramanian, R.B. Under saline stress
- plant growth promoting bacteria affect growth,
- photosynthesis and antioxidant activities in
- paddy. International Journal of Agriculture,
- Environment & Biotechnology, v. 7, p. 489
- , 2014b.
- Kohler, J.; Hernandez, J. A.; Caravaca, F.;
- Roldan, A. Induction of antioxidant enzymes is
- involved in the greater effectiveness of a KMB
- versus AM fungi with respect to increasing the
- tolerance of lettuces to severe salt stress.
- Environmental and Experimental Botany,
- v. 64,
- no. 2/3,
- p. 207-216,
- https://doi.org/10.1016/j.envexpbot.2008.09.008
- Liu, W.; Xu, X.; Wu, S.; Yang, Q.; Luo, Y.;
- Christie, P. Decomposition of silicate minerals
- by Bacillus mucilaginosus in liquid culture.
- Environmental Geochemistry and Health,
- v. 28,
- no. 1/2,
- p. 133-140,
- https://doi.org/10.1007/s10653-005-9022-0
- Madhava Rao,
- K. V.,
- Sresty,
- T. V. S.
- Antioxidative parameters in the seedlings of
- pigeon pea (Cajanus cajan (L.) Millspaugh) in
- response to Zn and Ni stresses. Plant Science,
- v. 157,
- no.
- ,
- p. 113-128,
- https://doi.org/10.1016/S0168-9452(00)00273-9
- Meena, V. S.; Maurya, B. R.; Verma, J. P. Does
- a rhizospheric microorganism enhance K+
- availability
- in
- agricultural
- soil?
- Microbiological Research, v. 169, no. 5/6,
- p. 337-347,
- j.micres.2013.09.003
- https://doi.org/10.1016/
- Meena, V. S.; Maurya, B. R.; Verma, J. P.;
- Arora, A.; Kumar, A.; Kim, K.; Bajpai, V. K.
- Potassium solubilizing rhizobactera (KSR):
- isolation, identification and K-release dynamics
- from waste mica. Ecological Engineering,
- v. 81, p. 340-347, 2015. https://doi.org/10.1016/
- j.ecoleng.2015.04.065
- Merlin, N. J.; Parthasarathy, V.; Manavalan, R.;
- Kumaravel, S. Chemical investigation of aerial
- parts of Gmelina asiatica Linn by GCMS.
- Pharmacognosy Research, v. 1, no. 3, p. 152
- , 2009.
- Mia, M. A. B., Shamsuddin, Z. H., Mahmood,
- M. Use of plant growth promoting bacteria in
- banana: a new insight for sustainable banana
- production.
- International
- Journal
- of
- Agriculture & Biology, v. 12, p. 459-467,
- Available from: <http://psasir.upm.edu.
- my/12408/1/Use_of_Plant.pdf>. Accessed on
- Braz. J. Biol. Sci., 2017, v. 4, No. 8, p. 333-344.
- Jha
- Braz. J. Biol. Sci., 2017, v. 4, No. 8, p. 333-344.
- Jun. 23, 2017.
- Rejšková, A.; Patková, L.; Stodůlková, E.;
- Lipavská, H. The effect of abiotic stresses on
- carbohydrate status of olive shoots (Olea
- europaea L.) under in vitro conditions. Journal
- of Plant Physiology, v. 164, p. 74-184, 2007.
- https://doi.org/10.1016/j.jplph.2005.09.011
- Romheld, V.; Kirkby, E. A. Research on
- potassium in agriculture: needs and prospects.
- Plant and Soil, v. 335, p. 155-180, 2010.
- https://doi.org/10.1007/s11104-010-0520-1
- Selvakumar, G.; Kundu, S.; Gupta, A. D.;
- Shouche, Y. S.; Gupta, H. S. Isolation and
- characterization of nonrhizobial plant growth
- promoting bacteria from nodules of Kudzu
- (Pueraria thunbergiana) and their effect on
- wheat seedling growth. Current Microbiology,
- v. 56, no. 2, p. 134-139, 2008.
- https://doi.org/10.1007/s00284-007-9062-z
- Sivritepe, N.; Sivritepe, H.Ö.; Türkan, I.; Bor,
- M.; Özdemir, F. NaCl pretreatment mediate salt
- adaptation in melon plant through antioxidative
- system. Seed Science and Technology, v. 36,
- no. 2, p. 360-370, 2008. https://doi.org/
- 15258/sst.2008.36.2.09
- Whitelaw, M. A.; Harden, T. J.; Helyar, K. R.
- Potassium solubilization in solution culture by
- the soil fungus Penicillium radicum. Soil
- Biology and Biochemistry, v. 31, no. 5, p. 655
- , 1999. https://doi.org/10.1016/S0038
- (98)00130-8
- Yu, X.; Liu, X.; Zhu, T. H.; Liu, G. H.; Mao, C.
- Isolation and characterization of potassium
- solubilizing bacteria from walnut and their
- effect on growth and phosphorus mobilization.
- Biology and Fertility of Soils, v. 47, p. 437
- , 2011. https://doi.org/10.1007/s00374-011
- -2
- Zaidi, A.; Khan, M. S.; Ahemad, M.; Oves, M.
- Plant growth promotion by potassium
- solubilizing bacteria. Acta Microbiologica et
- Immunologica Hungarica, v. 56, no. 3, p. 263
- , 2009. https://doi.org/10.1556/
- AMicr.56.2009.3.6
