Results 31 to 40 of about 489 (138)

Triterpene benzoates from the bark of Picramnia teapensis (Simaroubaceae)

Journal of the Brazilian Chemical Society, 2001
Two new benzoic acid esters of triterpene alcohols [lup-20(29)-en-28-oic acid 3alpha,7beta-dibenzoate and 3alpha-hydroxy-lup-20(29)-en-28-oic acid 7beta-benzoate] were isolated from the stem bark of Picramnia teapensis Tul.
Rodríguez-Gamboa Tatiana, Fernandes João B., Rodrigues Filho Edson, Silva M. Fátima das G. F. da, Vieira Paulo C., Barrios Ch. Mariano, Castro-Castillo Oscar, Victor Sandra R., Pagnocca Fernando C., Bueno Odair C., Hebling Maria J. A.   +10 more
doaj   +1 more source

Natureza do parasitismo de Escovopsis e Escovopsioides sobre Leucoagaricus gongylophorus, fungos associados aos jardins de formigas cortadeiras

, 2014
Pós-graduação em Ciências Biológicas (Microbiologia Aplicada ...
Haifig, Sadala Schmidt Varanda
core   +4 more sources

Table S1. Evidence for and against cellulose degradation, assimilation and metabolisation in Leucoagaricus gongylophorus. from A fungal symbiont converts provisioned cellulose into edible yield for its leafcutter ant farmers

, 2022
Studies on cellulose degradation since the results of Abril and Bucher (2002), which indicated Leucoagarcius gongylophorus was incapable of metabolising cellulose, and their main findings.
Conlon, Benjamin H., O'Tuama, David, Michelsen, Anders, Crumière, Antonin J. J., Shik, Jonathan Z.   +4 more
openaire   +2 more sources

Nutritional challenges of feeding a mutualist: Testing for a nutrient-toxin tradeoff in fungus-farming leafcutter ants. [PDF]

Ecology, 2022
Abstract The biochemical heterogeneity of food items often yields tradeoffs as each bite of food tends to contain some nutrients in surplus and others in deficit, as well as other less palatable or even toxic compounds. These multidimensional nutritional challenges are likely to be compounded when foraged foods are used to provision others (e.g ...
Crumière AJJ, Mallett S, Michelsen A, Rinnan R, Shik JZ.   +4 more
europepmc   +2 more sources

Total Synthesis of Shearinines D and G: A Convergent Approach to Indole Diterpenoids

Angewandte Chemie, Volume 134, Issue 3, January 17, 2022., 2022
Highly convergent total syntheses of (+)‐shearinines G and D, fungal metabolites with interesting bioactivities, were accomplished through late‐stage coupling of two complex fragments. Intramolecular rhodium‐catalyzed cyclopropanation of a diazo ketone established the central trans‐hydrindane motif bearing two vicinal quaternary stereocenters, thus ...
Nicole Hauser, Michael A. Imhof, Sarah S. Eichenberger, Tomas Kündig, Erick M. Carreira   +4 more
wiley   +2 more sources

Leafcutter ants enhance microbial drought resilience in tropical forest soil. [PDF]

Environ Microbiol Rep
We carried out an eight‐month investigation on a tropical soil microbial community in the aftermath of a severe drought event, which resulted in changes to soil moisture levels and methane emissions. Our study reveals that the leafcutter ant, Atta cephalotes, plays a crucial role in stabilizing the microbial community and enhancing its resilience by ...
Shulman HB, Aronson EL, Dierick D, Pinto-Tomás AA, Botthoff JK, Artavia-León A, Allen MF.   +6 more
europepmc   +2 more sources

INSECTICIDAL AND FUNGICIDAL ACTIVITY OF A MAGNESIUM COMPOUND CONTAINING ISOVANILLIC ACID AGAINST LEAF-CUTTING ANT AND ITS SYMBIOTIC FUNGUS

Química Nova, 2021
Pesticides offer a simple, cost-effective solution to ensure food supplies for a growing world population. However, their environmental performance needs improvement if pesticides are to continue contributing importantly.
Eldevan S. Silva, Rafael C. Marchi, Carla Sthefane P. Matos, Maria Fátima G. F. Silva, João B. Fernandes, Odair C. Bueno, Rose M. Carlos   +6 more
doaj   +1 more source

Reciprocal nutritional provisioning between leafcutter ants and their fungal cultivar mediates performance of symbiotic farming systems

Functional Ecology, Volume 37, Issue 12, Page 3079-3090, December 2023., 2023
Read the free Plain Language Summary for this article on the Journal blog. Abstract Optimized food acquisition is challenging because foraged diet items are chemically complex and often nutritionally imbalanced. These challenges are likely magnified when foraged foods are used to provision others (e.g.
Mille Bolander, Julie Elmegaard Andersen, Benjamin H. Conlon, Xavier Arnan, Anders Michelsen, Jonathan Zvi Shik   +5 more
wiley   +1 more source

Mutualistic interactions between ants and fungi: A review

Ecology and Evolution, Volume 13, Issue 8, August 2023., 2023
We review the mutualistic interactions between ants and fungi. Neotropical myrmicine Attina cultivate Basidiomycota for food, the same being true for certain “plant‐ants” associated with myrmecophytes that also feed on Ascomycota fungi. Otherwise, these Ascomycota have antibacterial properties.
Alain Dejean, Frédéric Azémar, Piotr Naskrecki, Maurice Tindo, Vivien Rossi, Christian Faucher, Hervé Gryta   +6 more
wiley   +1 more source

Beyond defense: microbial modifications of plant specialized metabolites alter and expand their ecological functions. [PDF]

New Phytol
Summary Plant specialized metabolites (PSMs) are compounds that are not involved in primary metabolism but instead confer other roles for the plant host, often related to ecological interactions. In the field of plant–microbe interactions, many PSMs have traditionally been considered for their roles in shaping interactions with pathogens.
Unger K, Agler MT.
europepmc   +2 more sources