Abstract:Pleurotus sajor-caju (Fr.) Singer was cultivated on selected agro wastes viz. cotton stalks, groundnut haulms, soybean straw, pigeon pea stalks and leaves and wheat straw, alone or in combinations. Cotton stalks, pigeon pea stalks and wheat straw alone or in combination were found to be more suitable than groundnut haulms and soybean straw for the cultivation. Organic supplements such as groundnut oilseed cake, gram powder and rice bran not only affected growth parameters but also increased yields. Thus bioconversion of lignocellulosic biomass by P. sajor-caju offers a promising way to convert low quality biomass into an improved human food.
Cell cultures of Psoralea corylifolia L. were established from the leaf disk derived callus. The effect of different biotic elicitors prepared from the fungal extract (Aspergillus niger and Penicillium notatum), yeast extract and chitosan with different concentrations was studied. The increased synthesis of psoralen in 16-day old cell cultures under 16 h of light and 8 h of dark period was studied. Elicitation of psoralen in A. niger elicitor treated cells was found 9-fold higher over control cells. Treating the cells with P. notatum, yeast extract and chitosan elicitors lead to four to seven-fold higher psoralen accumulation over control cells. The extract of A. niger at 1.0% v/v increased the significant accumulation of psoralen (9850 μg/g DCW) in the cultured cells. Our study clearly shows that all the elicitors had the potential to increase the accumulation of psoralen but the A. niger elicitor at 1.0% v/v induced maximum accumulation.
Geodorum laxiflorum Griff., an endemic orchid of India is collected for the first time in Maharashtra state. Gadchiroli district is a much known district of the state for its rich biodiversity.
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