Trichoderma harzianum ThU and Its Metabolites Underscore Alteration in Essential Oils of Ocimum basilicum and Ocimum sanctum

Research paper by Rupali Gupta, Akanksha Singh, Ranjana Kanaujia, Shaivya Kushwaha, Rakesh Pandey

Indexed on: 19 Jun '16Published on: 18 Jun '16Published in: Proceedings of the National Academy of Sciences, India Section B: Biological Sciences


Ocimum, an important commercial aromatic crop, is well known for the industrially acclaimed essential oil. In the present study, a comparative analysis was performed between Trichoderma harzianum (ThU) and its secondary metabolites on plant growth, essential oil and phytochemical parameters in O. basilicum and O. sanctum. A significant enhancement in biomass and essential oil content (2.37 and 2.16 fold, respectively) was observed in the live culture of ThU (TH_CC) treatment of O. basilicum, whereas its metabolites (TH_CF) enhanced biomass (1.25 folds) and essential oil (2.17 folds) in O. sanctum as compared to their respective controls. The present study first time highlights species dependent response in plants by the application of TH_CC and TH_CF to enhance plant growth, antioxidants and oil content of Ocimum. The present results thus provide a better understanding of the host specific response to ThU and its metabolites which can be used to develop effective biofertilizers for crop improvement.