Tailoring the rhizospheric microbiome of Vigna radiata by adaptation to salt stress
- PDF / 1,066,084 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 76 Downloads / 187 Views
ORIGINAL PAPER
Tailoring the rhizospheric microbiome of Vigna radiata by adaptation to salt stress Gautam Anand1 · Vasu Goel1 · Shubham Dubey1 · Shilpi Sharma1 Received: 14 March 2020 / Accepted: 12 September 2020 © Springer Nature B.V. 2020
Abstract Sustainable management practices are the need of the hour to counter the ever-deteriorating environmental conditions in agro-ecosystems. While bioinoculants have served as eco-friendly means to mitigate stresses, their survivability and competitiveness in field conditions have been a major challenge. The present study aimed to adopt a multi-generational approach to adapt the rhizospheric microbiome of Vigna radiata, a legume consumed worldwide, under salt stress. A multi-generational plant growth experiment was set-up with induced salinity stress, employing the rhizosphere of best-performing plants from the preceding generation as inoculum for the next generation. The plant health and mitigation of salinity stress by the adapted microbiome was analyzed using plant biometrics, bacterial diversity, and stress markers. Decreased levels of salt-induced stress markers, and simultaneous improvement in plant attributes were observed with the progression of the generations. The shifts in bacterial community were prominent upon inoculation of the adapted microbiome. The treatments with the adapted microbiome in the presence of salinity stress were closer to the control sets compared to salinity-stressed treatments, indicating the efficiency of the adapted microbiome towards mitigation of salinity stress. The study demonstrates the promising potential of such an eco-friendly, microbiome-based approach for plant growth promotion and mitigation of salinity stress. Keywords Rhizosphere · Adapted microbiome · Rhizosphere engineering · Vigna radiata · Bacterial diversity
Introduction Agricultural productivity is marginalized by numerous environmental stresses such as drought, soil salinization, flood, high temperature, and strong wind. Soil salinity is one of the most damaging abiotic stresses that limit agricultural productivity (Hussain et al. 2020). The application of chemicals as fertilizers and pesticides presents a potent threat to human health. Therefore, the need of the hour is to counter these stresses and increase agricultural productivity in an eco-friendly manner. Application of plant growth promoting Gautam Anand and Vasu Goel have equal contribution. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10725-020-00667-4) contains supplementary material, which is available to authorized users. * Shilpi Sharma [email protected] 1
Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
rhizobacteria (PGPR) presents a promising potential, however, the bottlenecks of this technology are the reduced efficacy and survivability of the strain or a consortium of strains in the environment. The strain or the consortium face competition from the resi
Data Loading...
