@article{wjar2018642,
author={{Khan, Aashif Iqubal and Bhandari, Rishi Ram and Pokhrel, Ambika and Yadav, Ram Nandan},
title={A Study on Root Exudation Pattern and Effect of Plant Growth Promoting Fungi during Biotic and Abiotic Stress in Pigeonpea},
journal={World Journal of Agricultural Research},
volume={6},
number={4},
pages={122--131},
year={2018},
url={http://pubs.sciepub.com/wjar/6/4/2},
issn={2333-0678},
abstract={An experiment was conducted to observe the interaction of <i>Fusarium</i> <i>udum</i> and <i>Macrophomina</i> <i>phaseolina</i> with a rhizospheric microbe <i>Pseudomonas</i> [AKC-O11] to see their impact on pigeonpea under biotic and abiotic conditions. Both biotic [<i>Fusarium</i> <i>udum</i> and <i>Macrophomina</i> <i>phaseolina</i>] and abiotic stress (NaCl) were applied and performances of these microbes were evaluated. The strain was used individually and in combination with the stresses and applied as seed bacterization of pigeonpea (Var. MA-3) seeds to see the impact on total phenol content in plant root exudates. The bacterized seeds were grown under invitro conditions and after three days of germination the seedlings were exposed to biotic stress due to challenge of the pathogens [<i>Fusarium</i> <i>udum</i> and <i>Macrophomina</i> <i>phaseolina</i>] and abiotic stress due to irrigation with salt solution of 100 mM. Root exudates were collected at 48 h, 96 h and 144 h after the application of stresses. The collected root exudates were processed for total phenolic content and High Pressure/Performance Liquid Chromatography (HPLC) analysis. It was observed that total phenol content was low in seeds bacterized with <i>Pseudomonas</i> strain but the concentration increased when the plants were challenged with the pathogen particularly <i>Macrophomina</i> <i>phaseolina</i> and NaCl. Similarly, a similar trend was also observed in gallic acid accumulation. The above results indicates that <i>Pseudomonas </i>strain (AKC-O11) have potential to be used as biocontrol agent that can help pigeonpea plants to combat attack of <i>Macrophomina</i> <i>phaseolina</i> and <i>Fusarium</i> <i>udum</i> as well as salinity.},
doi={10.12691/wjar-6-4-2}
publisher={Science and Education Publishing}
}