Gibberellins producing fungal genes cluster have been recently identified for Phaeosphaeria sp. L487 [37], Gibberella fujikuroi, Sphaceloma manihoticola[38] etc. Previous studies have shown that Penicillium citrinum[39], P. paxilli[40], P. funiculosum[17] produces gibberellins. It suggests the existence of GAs gene cluster in Penicillium spp.; hence, needs further genomic analyses at transcriptomics

levels. In endophyte-host symbioses, consequences and SHP099 in vivo interaction of secondary metabolites may be a contribution of the fungal endophyte to its host-plant to establish a mutualistic relationship [32, 41]. Though, this process is very slow and the quantities of metabolites are very minute depending upon host and endophyte, but one way or the other, this barter trade always supports the

host to counteract stress periods. The phytohormones synthesis potential gives additional benefits to the host plants in mitigating the adverse affects of extreme environmental conditions salinity, drought and temperature stress as shown by Redman et al. [16], Khan et al. [17] and Hamilton and Bauerle [31]. Plants treated with the culture filtrate and propagules of endophytes are often healthier than endophyte-free ones [19, 32]. Indeed, the endophyte-associations have enhanced biomass of barley [16], tomato [15], soybean [17] and rice [16] plants under various abiotic stress conditions like salinity, drought and high temperature.

Pepper plants are adversely affected by abiotic stresses which retard their yield. It was observed that P. resedanum selleck chemicals -associated plants had higher shoot length, chlorophyll content, and photosynthesis rate and low electrolytic leakages as compared to non-inoculated control. The non-inoculated plants, on the PD184352 (CI-1040) other hand, deprived of such association results in retarded growth and metabolism whilst they loss high plant biomass. This is also in conformity with the findings of Hamilton et al. [18] and Hamilton and Bauerle [31]. ROS generation and oxidative stress modulation It was found that the activities of antioxidants and related enzymes were significantly higher in endophyte-associated plants under osmotic imbalance induced ROS generation. With or without osmotic stress, endophyte elicitation has significantly regulated the SAR302503 in vitro antioxidant activities as compared to control and sole SA treated plants. It was shown that the responses of ROS generation and antioxidant signaling were similar to the effects caused by pathogenic and mutualistic microorganisms [42]. As both are different forms of consortiums however, higher antioxidant generation can improve plant defenses against disease and abiotic stress conditions. This was further elucidated by White and Torres [42] and Hamilton et al. [18]. Stress oriented ROS generations are minimized by the antioxidant and related enzymes production insides host-cells.