Author(s):

Anmoldeep Kaur and Prasann Kumar

Abstract: Heavy metal Lead is the second most toxic heavy metal after arsenic, which has zero roles in biological systems. Lead toxicity has a hazardous effect as it can damage the plant from germination stage to yield formation stage. Lead toxicity has a hazardous effect as it can damage the plant from germination stage to yield formation stage. Arbuscular mycorrhizal (AM) fungi are soil-borne species of fungi and globally universal fungi that are colonized in plant roots system and allocate supplementary pathways for the transfer and uptake of mineral nutrients from the soil particles to the plant system. Trichoderma viride is a fungus and also a bio fungicide. It is mainly used for the seed and soil treatment for the suppression of various diseases which are mainly caused by fungal pathogens. T. viride is a mould which asexually produces spores by mitosis. Along with a unique role as a biocontrol agent, it also has the capability of chemical degradation. T.viride is when applied, start colonizing seed/rhizosphere soil surface of the crop and then multiplies on the same. Trichoderma is used as a biopesticide, biofertilizer in agriculture. A pot experiment was set up with Sorghum vulgare as test plant to evaluate the role of trichoderma, rhizobium and mycorrhiza mediated mitigation of Lead toxicity on morphological parameters. It was noticed that the plant height was significantly more in control (T0) but it was noticed that plant height was significantly reduced with 18.91%, 48.89%, 46.78%, and 43.48% when exposed to lead metal stress (T1) as compared to (T0) at 30, 60, 90 and 120 DAS. The average leaf area was significantly reduced by 25.03%, 24.9%, 33.3%, and 45.4% due to the lead stress in (T1) compared to (T0) at 30, 60, 90 and 120 DAS respectively.

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