1. Khan N, Bano A, Rahman MA, Rathinasabapathi B. UPLC-HRMS-based untargeted metabolic profiling reveals changes in chickpea (Cicer arietinum) metabolome following long-term drought stress. Plant Cell Environ 2019; https://doi.org/10.1111/pce.13195.
2. Vymazal J. Removal of nutrients in various types of constructed wetlands. Sci Total Environ 2007; 380:48–65. 17078997
3. Tester CF. Organic amendment effects on physical and chemical properties of a sandy soil. Soil Sci Soc America J 1990;54:827–31.
4. Graham PH, Vance CP. Legumes: importance and constraints to greater use. Plant Physiol 2003;131:872–7. doi: 10.1104/pp.017004 12644639
5. Venkateswarlu B, Shanker AK. Climate change and agriculture: adaptation and mitigation strategies Indian J Agron 2009;54:226–30.
6. Vejan P, Abdullah R, Khadiran T, Ismail S. Role of plant growth promoting rhizobacteria in agricultural sustainability—a review. Molecules. 2016: 29;21(5):573.
7. Drogue B, Dore H, Borland S, Wisniewski-Dye F. Which specificity in cooperation between phytostimulating rhizobacteria and plants? Res Microbiol 2013;163:500–10.
8. Pothier JF, Wisniewski-Dye F, Weiss-Gayet M, Moenne-Loccoz Y. Promoter trap identification of wheat seed extract induced genes in the plant growth promoting rhizobacterium Azospirillum brasilense Sp245. Microbiol 2007;153:3608–22.
9. Vurukonda SS, Vardharajula S, Shrivastava M, SkZ A. Enhancement of drought stress tolerance in crops by plant growth promoting rhizobacteria. Microbiol Res 2016:1;184:13–24. 26856449
10. Yang J, Kloepper JW, Ryu CM. Rhizosphere bacteria help plants tolerate abiotic stress. Trends Plant Sci 2009;14:1–4. doi: 10.1016/j.tplants.2008.10.004 19056309
11. Kaushal M, Wani SP. Plant-growth-promoting rhizobacteria: drought stress alleviators to ameliorate crop production in drylands. Ann Microbiol 2016: 1;66(1):35–42.
12. Sade N, Gebretsadik M, Seligmann R, Schwartz A. The role of tobacco Aquaporin1 in improving water use efficiency, hydraulic conductivity, and yield production under salt stress. Plant Physiol 2010;152:245–54. doi: 10.1104/pp.109.145854 19939947
13. Sharafzadeh S. Effects of PGPR on growth and nutrients uptake of tomato. Int J Adv Eng Tech: 2012;2(1):27.
14. Han HS, Lee KD. Physiological responses of soybean inoculation of Bradyrhizobium japonicum with PGPR in saline soil conditions. Res J Agri Biol Sci 2005;1:216–21.
15. Almaghrabi OA, Massoud SI, Abdelmoneim TS. Influence of inoculation with plant growth promoting rhizobacteria (PGPR) on tomato plant growth and nematode reproduction under greenhouse conditions. Saudi J Biol Sci 2013;20:57–61. doi: 10.1016/j.sjbs.2012.10.004 23961220
16. Khalid A, Arshad M, Zahir ZA. Screening plant growth-promoting rhizobacteria for improving growth and yield of wheat. J App Microbiol 2004;96:473–80.
17. Beneduzi A, Ambrosini A, Passaglia LM. Plant growth-promoting rhizobacteria (PGPR): their potential as antagonists and biocontrol agents. Gen Molec Biol 2012;35:1044–51.
18. Ab Rahman SF, Singh E, Pieterse CM, Schenk PM. Emerging microbial biocontrol strategies for plant pathogens. Plant Sci 2018:1;267:102–11. doi: 10.1016/j.plantsci.2017.11.012 29362088
19. Chakraborty N, Ghosh R, Ghosh S, Narula K. Reduction of oxalate levels in tomato fruit and consequent metabolic remodeling following overexpression of a fungal oxalate decarboxylase. Plant Physiol 2013;162:364–78. doi: 10.1104/pp.112.209197 23482874
20. Ryu CM, Farag MA, Hu CH, Reddy MS. Bacterial volatiles induce systemic resistance in Arabidopsis. Plant Physiol 2004;134:1017–26. doi: 10.1104/pp.103.026583 14976231
21. Kloepper JW, Rodriguez-Kabana R, Zehnder AW, Murphy JF. Plant root bacterial interactions in biological control of soilborne diseases and potential extension to systemic and foliar diseases. Aust Plant Pathol 1999; 28:21–26.
22. Purohit SS, editor. Hormonal regulation of plant growth and development. Springer Science & Business Media, Germany 2012 Dec 6.
23. Hara M, Furukawa J, Sato A, Mizoguchi T. Abiotic stress and role of salicylic acid in plants. InAbiotic Stress Responses in Plants 2012; 235–51. Springer, New York, NY.
24. Singh B, Usha K. Salicylic acid induced physiological and biochemical changes in wheat seedlings under water stress. Plant Growth Reg 2003;39:137–41.
25. Khan N, Bano A, Rahman MA, Guo J. Comparative physiological and metabolic analysis reveals a complex mechanism involved in drought tolerance in chickpea (Cicer arietinum L.) induced by PGPR and PGRs. Sci Rep 2019:14;9(1):2097. doi: 10.1038/s41598-019-38702-8 30765803
26. Bezrukova MV, Sakhabutdinova R, Fathutdinova RA, Kyldiarova I. The role of hormonal changes in protective action of salicylic acid on growth of wheat seedlings under water deficit. Agrochemiya (Russ) 2001;2:51–54.
27. Mishra A, Choudhuri MA. Effects of salicylic acid on heavy metal-induced membrane deterioration mediated by lipoxygenase in rice. Biol Plant 1999;42:409–15.
28. Zhao JL, Zhou LG, Wu JY. Effects of biotic and abiotic elicitors on cell growth and tanshinone accumulation in Salvia miltiorrhiza cell cultures. Appl Microbiol Biotech 2010;87:137–44.
29. Duan JJ, Li J, Guo SR, Kang YY. Exogenous Spermidine affects polyamine metabolism in salinity-stressed Cucumis sativus roots and enhances short term salinity tolerance. J Plant Physiol 2008;165:1620–35. doi: 10.1016/j.jplph.2007.11.006 18242770
30. Rider JE, Hacker A, Mackintosh CA, Pegg AE. Spermine and spermidinemediate protection against oxidative damage caused by hydrogen peroxide. Amino Acids 2007;33:231–40. doi: 10.1007/s00726-007-0513-4 17396215
31. Khan N, Bano A, Babar MA. The root growth of wheat plants, the water conservation and fertility status of sandy soils influenced by plant growth promoting rhizobacteria. Symbiosis. 2017: 1;72(3):195–205.
32. Forni C, Riov J, Caiola MG, Tel-Or E. Indole-3-acetic acid (IAA) production by Arthrobacter species isolated from Azolla. Microbiol 1992;138:377–81.
33. Lorck H. Production of hydrocyanic acid by bacteria. Physiol Plant 1948;1:142–6.
34. Sadasivam S, Manickam A. Page 246 in Biochemical Methods for Agricultural Sciences. Wiley eastern limited, India.
35. Cappuccino JG, Sherman N. Serial dilution agar plating procedure to quantitate viable cells. Microbiology: a laboratory manual, 3rd edn. The Benjamin Cummings Publishing Co., Inc, Bedwood 1992; 77–82.
36. Bramchari PV, Dubey SK. Isolation and characterization of exopolysaccharides produced by Vibrio harveyi strain VB23. Lett Appl Microbiol 2006 43:571–577. doi: 10.1111/j.1472-765X.2006.01967.x 17032234
37. Kumar AM, Anandapandian KTK, Parthiban K. Production and characterization of exopolysaccharides (EPS) from biofilm forming marine bacterium. Braz Arch Biol Technol 2011 54:259–265.
38. Lowry OH, Rosebrough NJ, Farr AL, Randall RJ. Protein measurement with the Folin phenol reagent. J Biol Chem 1951;193:265–75. 14907713
39. Dubois M, Gilles KA, Hamilton JK, Rebers PT. Colorimetric method for determination of sugars and related substances. Analyt Chem 1956;28:350–6.
40. Bates LS, Waldern TID. Rapid determination of free proline for water stress studies. Plant Soil 1983;39:205–97.
41. Li QT, Yeo MH, Tan BK. Lipid peroxidation in small and large phospholipid unilamellar vesicles induced by water-soluble free radical sources. Biochem Biophy Res Commun 2000;273:72–6.
42. Barka EA, Nowak J, Clément C. Enhancement of chilling resistance of inoculated grapevine plantlets with a plant growth-promoting rhizobacterium, Burkholderia phytofirmans strain PsJN. App Environ Microb 2006;72: 7246–52.
43. Vetter JL, Steinberg MP, Nelson AI. Enzyme assay, quantitative determination of peroxidase in sweet corn. J Agri Food Chem 1958;6:39–41.
44. Gorin N, Heidema FT. Peroxidase activity in Golden Delicious apples as a possible parameter of ripening and senescence. J Agri Food Chem 1976;24:200–01.
45. Asada K, Takahashi M. Production and scavenging of active oxygen in photosynthesis. In Kyle DJ, Osmond CB, and Arntzen CJ, editors. Photoinhibition. Amsterdam: Elsevier 1987;227–87.
46. Chandlee JM, Scandalios JG. Analysis of variants affecting the catalase developmental program in maize scutellum. Theor App Gene 1984;69:71–7.
47. Beauchamp C, Fridovich I. Superoxide dismutase: improved assays and an assay applicable to acrylamide gels. Analyt Biochem 1971;44:276–87. doi: 10.1016/0003-2697(71)90370-8 4943714
48. Weatherly PE. Studies in the water relations of the cotton plant. The field measurement of water deficits in leaves. New Phytol 1950:49:81–97.
49. Khan N, Bano A, Rahman MA, Guo J. Comparative physiological and metabolic analysis reveals a complex mechanism involved in drought tolerance in chickpea (Cicer arietinum L.) induced by PGPR and PGRs. Sci Rep. 2019:14;9(1):2097. doi: 10.1038/s41598-019-38702-8 30765803
50. Soltanpour PA, Schwab AP. A new soil test for simultaneous extraction of macro-and micro-nutrients in alkaline soils. Commun Soil Sci Plant Anal 1977 Jan 1;8(3):195–207.
51. Naseem H, Ahsan M, Shahid MA, Khan N. Exopolysaccharides producing rhizobacteria and their role in plant growth and drought tolerance. J Basic Microbiol. 2018:58(12):1009–22. doi: 10.1002/jobm.201800309 30183106
52. Bashan Y, Holguin G, De-Bashan LE. Azospirillum-plant relationships: physiological, molecular, agricultural, and environmental advances (1997–2003). Can J Microbiol. 2004:1;50(8):521–77. doi: 10.1139/w04-035 15467782
53. Alami Y, Champolivier L, Merrien A, Heulin T. The role of Rhizobium sp. rhizobacterium that produces exopolysaccharide in the aggregation of the rhizospherical soil of the sunflower: Effects on plant growth and resistance to hydric constraint. OCL—Oleagineux Corps Gras Lipides. 2000. 6:524–528.
54. Naseem H, Bano A. Role of plant growth-promoting rhizobacteria and their exopolysaccharide in drought tolerance of maize. J Plant Interact. 2014: 2;9(1):689–701.
55. Kumar A, Bahadur I, Maurya BR, Raghuwanshi R. Does a plant growth promoting rhizobacteria enhance agricultural sustainability? J Pure App Microbiol 2015;9:715–24.
56. Kohler J, Hernández JA, Caravaca F, Roldán A. Induction of antioxidant enzymes is involved in the greater effectiveness of a PGPR versus AM fungi with respect to increasing the tolerance of lettuce to severe salt stress. Environ Exp Bot 2009;65:245–52.
57. Habib SH, Kausar H, Saud HM. Plant growth-promoting rhizobacteria enhance salinity stress tolerance in okra through ROS-scavenging enzymes. BioMed Res Int 2016;21.
58. Czerpak R, Dobrzyn P, Krotke A, Kicinska E. The Effect of Auxins and Salicylic Acid on Chlorophyll and Carotenoid Contents. Polish J Environ Stud 2002;11:231–35.
59. Khandaker L, Masum Akond AS, Oba S. Foliar application of salicylic acid improved the growth, yield and leaf’s bioactive compounds in red amaranth (amaranthus tricolor l.). Veget Crops Res Bull 2011;74:77–86.
60. Durmuş N, Bekircan T. Pretreatment with polyamines alleviate the deleterious effects of diuron in maize leaves Acta Biol Hung 2013;66:52–65.
61. Zhang Y, Zhu H, Zhang Q, Li M. Phospholipase Dα1 and phosphatidic acid regulate NADPH oxidase activity and production of reactive oxygen species in ABA-mediated stomatal closure in Arabidopsis. Plant Cell 2009;21:2357–77. doi: 10.1105/tpc.108.062992 19690149
62. Dashti N, Zhang F, Hynes R, Smith DL. Application of plant growth promoting rhizobacteria to soybean (Glycine max L. Merr.) increases protein and dry matter yield under short season conditions. Plant Soil 1997;188:33–41.
63. Afzal, Bano A. Rhizobium and phosphate solubilizing bacteria improve the yield and phosphorus uptake in wheat (Triticum aestivum). Int J Agri Biol Eng 2008;10:85–8.
64. Islam F, Yasmeen T, Ali Q, Ali S. Influence of Pseudomonas aeruginosa as PGPR on oxidative stress tolerance in wheat under Zn stress. Ecotox Environ Safety 2014;30:285–93.
65. Perez-Montano F, Alias-Villegas C, Bellogin RA, Del Cerro P. Plant growth promotion in cereal and leguminous agricultural important plants: from microorganism capacities to crop production. Microbiol Res 2014;169:325–36. doi: 10.1016/j.micres.2013.09.011 24144612
66. Neelam M, Rahul M, Ajiboye M, Kafayat Y. Salicylic Acid Alters Antioxidant and Phenolics Metabolism in Catharanthus roseus Grown Under Salinity Stress. African Journal of Traditional, Complem Altern Medic 2014;11:118–25.
67. Canakci S, Dursun B. Some physiological and biochemical responses to nickel in salicylic acid applied chickpea (Cicer arietinum L.) seedlings. Acta Biol Hung 2011;62:279–89. doi: 10.1556/ABiol.62.2011.3.7 21840830
68. Prado FE, Boero C, Gallardo M, Gonzalez JA. Effect of NaCl on germination, growth, and soluble sugar content in Chenopodium quinoa Willd. Seeds". Bot Bull Acad Sinica 2000;.41.
69. Hoekstra FA, Buitink J. Mechanisms of plant desiccation tolerance. Trend Plant Sci 2001;8: 431–8.
70. Khosravi S, Baghizadeh A, Nezami MT. The salicylic acid effect on the Salvia officianlis L. sugar, protein and proline contents under salinity (NaCl) stress. J Stress Physiol Biochem 2011;7:80–7.
71. Bahadur A, Singh UP, Sarnia BK, Singh DP. Foliar application of plant growth-promoting rhizobacteria increases antifungal compounds in pea (Pisum sativum) against Erysiphe pisi. Mycobiol 2007;35:129–34.
72. Chakraborty N, Ghosh R, Ghosh S, Narula K. Reduction of oxalate levels in tomato fruit and consequent metabolic remodeling following overexpression of a fungal oxalate decarboxylase. Plant physiol 2013;1:112.
73. War AR, Paulraj MG, War MY, Ignacimuthu S. Role of salicylic acid in induction of plant defense system in chickpea (Cicer arietinum L.). Plant Sign Behav 2011;6:1787–92.
74. Dihazi A, Jaiti F, Zouine J, El Hassni M. Effect of salicylic acid on phenolic compounds related to date palm resistance to Fusarium oxysporum f. sp. albedinis. Phytopathol Mediterr 2003;42:9–16.
75. Jha Y, Subramanian RB. PGPR regulate caspase like activity, programmed cell death, and antioxidant enzyme activity in paddy under salinity. Physiol Molec Biol Plants 2014;20:201–7.
76. Gupta B, Huang B. Mechanism of salinity tolerance in plants: physiological, biochemical, and molecular characterization. Int J Gen 2014; 2014:701596.
77. Khan MI, Iqbal N, Masood A, Per TS. Salicylic acid alleviates adverse effects of heat stress on photosynthesis through changes in proline production and ethylene formation. Plant Sig Behav 2013;8:26374.
78. Singh RP, Jha PN. The multifarious PGPR Serratia marcescens CDP-13 augments induced systemic resistance and enhanced salinity tolerance of wheat (Triticum aestivum L.). PLos one 2016;11:e0155026. doi: 10.1371/journal.pone.0155026 27322827
79. Jha Y, Subramanian RB. PGPR regulate caspase like activity, programmed cell death, and antioxidant enzyme activity in paddy under salinity. Physiol Molec Biol Plants 2014;20:201–7.
80. Kang HM, Saltveit ME. Chilling tolerance of maize, cucumber and rice seedling leaves and roots are differentially affected by salicylic acid. Physiol Plant 2002;115:571–6. 12121463
81. Turan M, Güllüce M, Çakmak R, Şahin F. Effect of plant growth-promoting rhizobacteria strain on freezing injury and antioxidant enzyme activity of wheat and barley. J Plant Nut 2013;36:731–48.
82. Sakhabutdinova AR, Fatkhutdinova DR, Shakirova FM. Effect of salicylic acid on the activity of antioxidant enzymes in wheat under conditions of salination. Appl BiochMicrobiol 2004;40:501–5.
83. Senaratna T, Touchell D, Bunn E, Dixon K. Acetyl salicylic acid (Aspirin) and salicylic acid induce multiple stress tolerance in bean and tomato plants. Plant Growth Reg 2000;30:157–61.
84. Casanovas EM, Barassi CA, Sueldo RJ. Azospirillum inoculation mitigates water stress effects in maize seedlings. Cereal Res Commun 2002;1:343–50.
85. Sandhya VS, Ali SZ, Grover M, Reddy G. Effect of plant growth promoting Pseudomonas spp. on compatible solutes, antioxidant status and plant growth of maize under drought stress. Plant Growth Reg 2010;62:21–30.
86. Gou W, Tian L, Ruan Z, Zheng PE. Accumulation of choline and glycinebetaine and drought stress tolerance induced in maize (Zea mays) by three plant growth promoting rhizobacteria (PGPR) strains. Pak J Bot 2015;47:581–6.
87. Arzanesh MH, Alikhani HA, Khavazi K, Rahimian HA. Wheat (Triticum aestivum L.) growth enhancement by Azospirillum sp. under drought stress. World J Microbiol Biotech 2011;27:197–205.
88. Ahemad M, Kibret M. Mechanisms and applications of plant growth promoting rhizobacteria: current perspective. J King Saud University-Sci 2014;26:1–20.
89. Islam S, Akanda AM, Prova A, Islam MT. Isolation and identification of plant growth promoting rhizobacteria from cucumber rhizosphere and their effect on plant growth promotion and disease suppression. Front Microbiol 2016;6:1360. doi: 10.3389/fmicb.2015.01360 26869996
90. Huang P, de-Bashan L, Crocker T, Kloepper JW. Evidence that fresh weight measurement is imprecise for reporting the effect of plant growth-promoting (rhizo) bacteria on growth promotion of crop plants. Biol Fert Soils 2017;53:199–208.
91. Idrees M, Khan MM, Aftab T, Naeem M. Salicylic acid-induced physiological and biochemical changes in lemongrass varieties under water stress. J Plant Interact 2010;5:293–303.