Rhizosphere Signaling Cascades: Fundamentals and Determinants
Molecular interactions among the plants and microbes represent an important microecological phenomenon. The cross talk involves multiple ecological aspects like exchange of metabolites, signaling and chemotaxis, etc. These bilateral interactions are crucial for the health and development of both the plant and colonizing microbes. The signal molecules play major role as inducers of different pathways that contribute indispensable role for the survival of the participants under adverse circumstances and development of symbiotic associations as well. Though the recent high-throughput techniques have generated considerable data regarding the molecular exchanges happening in the rhizosphere microbes and the host, our current knowledge in this area is still in infancy. It is thus critical to get deeper insights of such interactions so as to develop next-generation strategies relating to the sustainable agriculture under the changing climate scenario. We describe herewith the major aspects concerning the contributors and their role in rhizosphere signaling cascades and the consequent post-signaling responses given by the host and the colonizing microbes.
KeywordsRhizosphere Bacteria Host–microbe interaction Chemotaxis Signaling
The authors gratefully acknowledge the financial assistance from Indian Council of Agricultural Research (ICAR), Govt. of India, under Application of Microorganisms in Agriculture and Allied Sectors (AMAAS).
- Benhamou N, Gagné S, Quéré DL et al (2000) Bacterial-mediated induced resistance in cucumber: beneficial effect of the endophytic bacterium Serratia plymuthica on the protection against infection by Pythium ultimum. Biochem Cell Biol 90:45–56Google Scholar
- Cleason A (2006) Volatile organic compounds from microorganisms. Ph.D. thesis, Umeå University, UmeåGoogle Scholar
- De Vleesschauwer D, Höfte M, Loon LCV et al (2009) Rhizobacteria induced systemic resistance. In: Van Loon LC (ed) Advances in botanical research. Academic, New York, pp 223–281Google Scholar
- Matzanke BF (1991) Structures, coordination chemistry and functions of microbial iron chelates. In: Winkelmann G (ed) CRC handbook of microbial iron chelates. CRC Press, Boca Raton, pp 15–64Google Scholar
- Nagoba B, Vedpathak D (2011) Medical applications of siderophores. Eur J Gen Med 8:229–235Google Scholar
- Sorty AM, Meena KK, Choudhary K, Bitla UM, Minhas PS, Krishnani KK (2016) Effect of plant growth promoting bacteria associated with halophytic weed (Psoralea corylifolia l) on germination and seedling growth of wheat under saline conditions. Appl Biochem Biotechnol 180(5):872–882PubMedCrossRefGoogle Scholar
- Supanekar SV, Sorty AM (2013) Siderophoregenic Klebsiella pneumoniae SUP II from wheat (Triticum aestivum) rhizoplane. PARIPEX-Indian J Res 7:243–245Google Scholar
- Supanekar S, Sorty A, Raut A (2013a) Study of catethol siderophore from a newly isolated Azotobacter sp. for its antimicrobial property. J Microbiol Biotechnol Food Sci 3:270–273Google Scholar
- Supanekar SV, Sorty AM, Raut AA (2013b) Catechol siderophore produced by Klebsiella pneumoniae isolated from rhizosphere of Saccharum Officinarum L. Int J Sci Res 5:423–425Google Scholar