TY - JOUR AU - Ndirangu, Ziporah Wanjiku AU - Egri, Zoltán AU - Muhoro, Arthur TI - Determinants of Pesticide Safety Adherence among Tomato Farmers in Kenya: Individual and Structural Factors for Sustainable Agriculture JF - JOURNAL OF SUSTAINABILITY RESEARCH J2 - JSR VL - 7 PY - 2025 IS - 2 PG - 38 SN - 2632-6582 DO - 10.20900/jsr20250028 UR - https://m2.mtmt.hu/api/publication/36127808 ID - 36127808 LA - English DB - MTMT ER - TY - THES AU - Muhoro, Arthur TI - Biological contra Chemical Diversity and Their Practical, Insecticidal Aspects in Lichenology PY - 2025 SP - 87 DO - 10.54598/006070 UR - https://m2.mtmt.hu/api/publication/36480670 ID - 36480670 LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Edit AU - Xu, Maonian AU - Muhoro, Arthur AU - Szabó, Krisztina AU - Lengyel, Attila AU - Heiðmarsson, Starri AU - Viktorsson, Elvar Örn AU - Ólafsdóttir, Elín Soffia TI - The algal partnership is associated with quantitative variation of lichen specific metabolites in Cladonia foliacea from Central and Southern Europe JF - SYMBIOSIS J2 - SYMBIOSIS VL - 92 PY - 2024 SP - 403 EP - 419 PG - 17 SN - 0334-5114 DO - 10.1007/s13199-024-00982-8 UR - https://m2.mtmt.hu/api/publication/34741626 ID - 34741626 N1 - Institute of Ecology and Botany, HUN-REN Centre for Ecological Research, Alkotmány u. 2-4, Vácrátót, H-2163, Hungary Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, Reykjavik, IS-107, Iceland Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Páter K. u. 1, Gödöllő, H-2100, Hungary HUN-REN-EKKE Lendület Environmental Microbiome Research Group, Leányka u. 6, H-3300, Eger, Hungary Northwest Iceland Nature Research Centre, Sauðárkrókur, IS-550, Iceland Export Date: 24 September 2024 CODEN: SYMBE Correspondence Address: Farkas, E.; Institute of Ecology and Botany, Alkotmány u. 2-4, Hungary; email: farkas.edit@ecolres.hu AB - Lichen specific metabolites (LSMs) have interesting biological activities and quantitative variations may be present intraspecifically. For example, variations in medullary fumarprotocetraric acid (FA) and cortical usnic acid (UA) were observed in the lichen Cladonia foliacea , but the mechanism of variation is not well understood. The current study aimed to characterise the quantitative variation of FA and UA and to investigate the association between lichen metabolite content and ecological / biological variables. Fungal and algal trees were constructed using fungal (nrITS, RPB2) and algal (nrITS) loci, respectively. Using a chiral chromatographic method, the contents of (-)-UA were determined in 29 C. foliacea specimens and range from 6.88 to 34.27 mg/g dry wt. The FA contents were lower and varied from 1.44 to 9.87 mg/g dry wt. Although the fungal tree showed two well resolved clades, no significant differences of UA or FA contents were found between the two fungal clades. However, a significantly higher UA/FA ratio as well as a unique habitat were found to be associated with specimens which contained the alga Asterochloris lobophora than those specimens associated other Asterochloris algae. Taking all predictive variables into account (i.e. substrate type, elevation, collection season, photobiont identity), the multivariate data analysis indicated that photobiont identity explained most of the variance of LSM contents in C. foliacea . Thus future LSM biosynthetic studies should take the photobiont into consideration when dealing with intraspecific quantitative variation. LA - English DB - MTMT ER - TY - CONF AU - Muhoro, Arthur AU - Eric, Ochomo AU - Farkas, Edit TI - Acetone extract of Cladonia foliacea (Huds.) Willd., a potential biopesticide as oral toxic sugar bait against Anopheles gambiae T2 - 1st Debrecen Online Conference on Infectious Diseases in a One Health context (DOCIDOH) : Book of abstracts PY - 2024 SP - 27 EP - 27 PG - 1 UR - https://m2.mtmt.hu/api/publication/34789855 ID - 34789855 LA - English DB - MTMT ER - TY - JOUR AU - Edit, FARKAS AU - Paul, M. KIRIKA AU - Krisztina, SZABÓ AU - Muhoro, Arthur TI - Concentration data of (+)-usnic acid enantiomer from some European and African samples of Flavoparmelia caperata (Parmeliaceae, lichenised Ascomycota) - results of a preliminary study JF - CRYPTOGAMIE MYCOLOGIE J2 - CRYPTOGAMIE MYCOL PY - 2024 SN - 0181-1584 UR - https://m2.mtmt.hu/api/publication/34790168 ID - 34790168 LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Edit AU - Kirika, Paul M. AU - Szabó, Krisztina AU - Muhoro, Arthur TI - Concentration Data of (+)-Usnic Acid Enantiomer from Some European and African Samples of Flavoparmelia caperata (L.) Hale (Parmeliaceae, Lichenised Ascomycota) – Results of a Preliminary Study JF - CRYPTOGAMIE MYCOLOGIE J2 - CRYPTOGAMIE MYCOL VL - 45 PY - 2024 IS - 7 SP - 71 EP - 82 PG - 12 SN - 0181-1584 DO - 10.5252/cryptogamie-mycologie2024v45a7 UR - https://m2.mtmt.hu/api/publication/35059731 ID - 35059731 N1 - HUN-REN Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2-4, Vácrátót, H-2163, Hungary Mycology Section, Botany Department, Ea Herbarium, National Museums of Kenya, P.O. Box 45166 ,Museum Hill, Nairobi, 00100 GPO, Kenya Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Páter K. u. 1, Gödöllo, H-2100, Hungary Export Date: 24 September 2024 CODEN: CRMYD Correspondence Address: Farkas, E.; HUN-REN Centre for Ecological Research, Alkotmány u. 2-4, Hungary; email: farkas.edit@ecolres.hu LA - English DB - MTMT ER - TY - CONF AU - Muhoro, Arthur AU - Ochomo, Eric AU - Farkas, Edit ED - Dima, Bálint ED - Papp, Viktor TI - Az uzneasav hatása az Anopheles gambiae-re Nyugat-Kenyában T2 - VII. Magyar Mikológiai Konferencia - Absztraktkötet PB - Magyar Mikológiai Társaság C1 - Gödöllő SN - 9789636230982 PY - 2024 SP - 177 EP - 178 PG - 2 UR - https://m2.mtmt.hu/api/publication/35071265 ID - 35071265 LA - Hungarian DB - MTMT ER - TY - CONF AU - Muhoro, Arthur AU - Ochomo, Eric AU - Farkas, Edit ED - Tölgyesi, Csaba ED - Lőrinczi, Gábor TI - Másodlagos zuzmóanyag enantiomerek hatása kenyai malária-vektor szúnyogokra T2 - 13. Magyar Ökológus Kongresszus (2024) Előadások és poszterek összefoglalói PY - 2024 SP - 123 EP - 123 PG - 1 UR - https://m2.mtmt.hu/api/publication/35428934 ID - 35428934 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Muhoro, Arthur AU - Ochomo, Eric Odhiambo AU - Njangiru, Isaac Kinyua AU - Kosgei, Jackline Jeruto AU - Rasaki, Laide Abbas AU - Farkas, Edit TI - A study on the effectiveness of (+)-usnic acid as oral toxic sugar bait against adult male and female Anopheles gambiae JF - MALARIA JOURNAL J2 - MALARIA J VL - 23 PY - 2024 IS - 1 PG - 8 SN - 1475-2875 DO - 10.1186/s12936-024-05141-4 UR - https://m2.mtmt.hu/api/publication/35466494 ID - 35466494 N1 - Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Páter K. U. 1, Gödöllő, 2100, Hungary Kenya Medical Research Institute-Centre for Global Health Research (KEMRI-CGHR), P.O. Box 1578, Kisumu, 40100, Kenya Institute of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös U. 6, Szeged, 6720, Hungary Department of Crop Sciences, North Carolina State University, Raleigh, NC 27695, United States HUN-REN Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2–4, Vácrátót, 2163, Hungary Export Date: 11 February 2025 Correspondence Address: Muhoro, A.M.; Doctoral School of Biological Sciences, Páter K. U. 1, Hungary; email: arthmacharia@yahoo.com LA - English DB - MTMT ER - TY - JOUR AU - Muhoro, Arthur AU - Kosgei, J. J. AU - Njangiru, I. K. AU - Rasaki, L. A. AU - Farkas, Edit TI - Potential of Cladonia Foliacea Extract as an Oral Toxic Insecticide Against Adult Anopheles Gambiae, Malaria Vector in Western Kenya JF - ACTA BOTANICA HUNGARICA J2 - ACTA BOT HUNG VL - 66 PY - 2024 IS - 3-4 SP - 233 EP - 250 PG - 18 SN - 0236-6495 DO - 10.1556/034.66.2024.3-4.7 UR - https://m2.mtmt.hu/api/publication/35628128 ID - 35628128 N1 - Export Date: 11 February 2025 Correspondence Address: Muhoro, A.M.; School of Biological Sciences, Páter K. u. 1, Hungary; email: arthmacharia@yahoo.com AB - Plasmodium falciparum is primarily transmitted by Anopheles gambiae . Malaria caused by Plasmodium falciparum is a major public health issue in western Kenya and sub-Saharan Africa, accounting for 90% of malaria deaths. The primary methods of malaria prevention are indoor residual spraying and the use of insecticide-treated nets. These tools face challenges such as mosquito resistance to insecticides as well as their toxic effect to the non-target organism, therefore this study aims to explore the application of lichen secondary metabolites as potential oral biological insecticides by assessing mosquito mortality in varying concentrations. Lichen secondary metabolites were extracted from Cladonia foliacea thalli. Bioassay experiments were conducted on A. gambiae Kisumu strain mosquitoes. Mortality rates were measured after ingesting sugar bait and lichen extracts in different concentrations. Three test replicates and negative control were used, with mortality measured after 4, 24, 48, and 72 hours. Analysis using three-way analysis of variance with twoway interactions was performed using R program to determine the effect of different lichen extract concentrations, time of exposures and mosquito sex on mortality. Our results showed that the ingestion of C. foliacea extract at 50 mg/ml and a post-exposure period of 24 to 48 hours had a maximum effect on the mortality rate of targeted male and female A. gambiae . No statistical difference was found between male and female mosquitoes in mortality. Our study confirms firstly that the extract of C. foliacea is a promising oral toxic agent against adult malaria vector A. gambiae . LA - English DB - MTMT ER -