Archives

International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 5
First page : (771) Last page : (783)
Article doi: : http://dx.doi.org/10.18782/2320-6508

An Overview: Mechanism Involved in Bio-Priming Mediated Plant
Growth Promotion

Sukanya V.¹, R. M. Patel², K. P. Suthar¹* and D. Singh¹

¹Department of Plant Molecular Biology and Biotechnology, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, India 396 450
²ASPEE SHAKILAM Biotechnology Institute, Navsari Agricultural University, Surat, Gujarat, India 395 007
*Corresponding Author E-mail: kpsmolbio@gmail.com
Received: 24.05.2018  |  Revised: 30.06.2018   |  Accepted: 7.07.2018  

 ABSTRACT

Application of plant growth promoting rhizho-bacteria in agriculture is a need of time for sustainable agriculture. Bio-priming is a treatment of seeds with beneficial microorganism under controlled hydration which enhances the preparatory processes prior to germination without the emergence of the radicle. It improves the seedling vigor, germination percentage, speed of germination, growth and development. Bio-priming agents directly release growth promoting hormones viz., indole acetic acid, gibberellin, and cytokinin or stimulate their production in the plant, they also improve the availability of minerals viz., nitrogen, phosphorous, potassium, and Iron whereby enhance the plant growth and development. Bio-priming affects plant by different indirect means viz., phytohormones production stimulation, modulation in different secondary metabolites, alteration in gene expression, tolerance to abiotic and biotic stress. The PGPR bio-priming enhances production of soluble protein, soluble sugar, phenolic acid, salicylic acid and plant growth hormones. Further, efficient mitochondrial development by augmenting energy metabolism is a specialty of bio-primed seeds. The bio-priming also found to induce early DNA and protein synthesis. Bio-priming reported to enhance the expression of RuBisCO and chl a/b, expansins, β-tubulin and GST genes which at the end leads to have better carboxylation capacity and efficient photosynthesis whereby stimulate early germination process and vigorous plant growth. Current biochemical and molecular level understanding confirms the beneficial effect of bio-priming on seed germination, plant stand establishment, growth and development.

Key words: Bio-priming, PGPR, Physiology, Biochemical, Gene expression

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Sukanya, V., Patel, R.M., Suthar, K.P. and Singh, D., An Overview: Mechanism Involved in Bio-Priming Mediated Plant Growth Promotion, Int. J. Pure App. Biosci.6(5): 771-783 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6508