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This study evaluated the residual compost from the production of Bactris gasipaes Kunth (pupunha heart of palm) (RP) and the mushroom Pleurotus ostreatus (RM). The residuals were used as soil conditioners for Lactuca sativa ‘Veronica’ crops. After adding RP and RM to the soil, all treatments exhibited similar behaviors and soils in each treatment were classified as eutrophic. Soil treatments involving increased application of residual compost resulted in the production of lettuce with greater widths because of an increase in the angle between the stem and leaf, resulting from a lack of nitrogen available to the plant. Soil treatments with 5% of RP and RM resulted in a 1.7 and 1.2 times (44% and 22%, respectively) decrease in dry weight of lettuce, as compared to the soil without residual compost addition. The addition of RP and RM as soil substrate reduced the growth of lettuce compared to the soil without residual compost. In general, the possibility of replacing chemical fertilizers (NPK) with RP or RM without previous composting was found to be inefficient. The resultant dry weight parameters were below the commercial level, and a complete period of composting RP and RM was deemed necessary for incorporating nitrogen into the soil. Lignocellulosic mushrooms such as Pleurotus spp. present highly fibrous residual compost with low nitrogen content, thus requiring a full period of composting before subsequent use in soil enrichment for various crops.

Existe grande diversidade de macromicetos no mundo, e a rica variedade de formas e cores que eles apresentam se reflete na diversidade de estruturas moleculares que os compõem. Alguns cogumelos são comestíveis, outros, ou 2001 42 Triterpenos hidroxilados Diversas Supressão da sinalização Akt/NF-κB 2008 43 Anticâncer (coloretal) Polissacarídeo K (PSK) Coriolus versicolor CM-10 Estimula as respostas imunológicas inata e adaptativa 2007 2006 44, 45 Lectina A. bisporus (ABL) Inibe a proliferação de células tumorais humanas invitro 1993 46 Extrato aquoso Inonotus obliquus

Ganoderma lucidum is a medicinal mushroom widely used in Eastern countries and currently in global scale. Its fruiting body and mycelium are composed by polysaccharides, triterpenes and more than 200 secondary metabolites. These compounds exhibit a range of bioactivities, such as anti-inflammatory, antitumorigenic, antibacterial and antifungal action. Several scientific publications have demonstrated the potential and performance of G. lucidum compounds in the control of diseases in animals and humans. However, there is a lack of information on the effect of their compounds on the phytopathogens control, whether directly or by activating plant defense mechanisms. In the search of new molecules that has induced activity and disease control, this study was aimed to evaluate the bioactive compounds produced by G. lucidum through liquid culture under elicitation to control powdery mildew (Erysiphe diffusa) in soybean plants. The compounds tested were: C01-distilled water, C02-copper oxychloride (1 L ha-1), FC01-filtered mycelial growth of G. lucidum without elicitation, FC02-G. lucidum filtration of lignin elicitation and FC03-G. lucidum filtration from SA elicitation. The upper part of the plant was sprayed at 20 % (v/v) concentration and 10 mL per plant were applied. All data were analyzed using R® software. The Ganoderma filtrates have shown the induction of resistance potential in soybean plants by the activation of phytoalexins, activation of the enzyme phenylalanine ammonia-lyase, increase of phenolic compounds, peroxidases and chitinase activity, such induction has specificity in relation to time activation and association with elicitors. New studies should be considered, seeking to identify and isolate the active principles present in the filtrates, as well as to evaluate the action of these substances in other pathosystems of agricultural interest.