@Article{phyton.2025.066682,
AUTHOR = {Arely A. Vargas-Díaz, Daisy Pérez-Brito, Beatriz Hernández-Carlos, Jairo Cristóbal-Alejo, Silvia Andrade-Canto, Marcela Gamboa-Angulo},
TITLE = {<i>Acalypha gaumeri</i>: Antifungal Activity of Three Populations under Edaphic and Seasonal Variations and <i>Ex-Situ</i> Propagation},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {94},
YEAR = {2025},
NUMBER = {9},
PAGES = {2839--2853},
URL = {http://www.techscience.com/phyton/v94n9/63923},
ISSN = {1851-5657},
ABSTRACT = {In the search for new alternatives to control tropical fungal pathogens, the ethanol extracts (EEs) from <i>Acalypha gaumeri</i> (Euphorbiaceae) roots showed antifungal properties against several tropical fungal phytopathogens. <i>A. gaumeri</i> is classified as endemic to the Yucatan Peninsula, Mexico, an area with distinct rainy, drought and northern seasons. The present study evaluated the antifungal activity of three wild populations of <i>A. gaumeri</i> collected quarterly in different seasons during one year against <i>Alternaria chrysanthemi</i>, <i>Colletotrichum gloeosporioides</i>, and <i>Pseudocercospora fijiensis</i> and explored their <i>ex-situ</i> propagation. The highest activity was shown by the EE from the Tinum wild population during the rainy season against <i>A. chrysanthemi</i>, <i>C. gloeosporioides</i>, and <i>P. fijiensis</i> with MIC values of 500–1000 μg/mL, followed by Yaxcaba populations during the rainy season and Kiuic and Tinum from November against <i>A</i>. <i>chrysanthemi</i> and <i>P</i>. <i>fijiensis</i> 1000 and 500 μg/mL, respectively. The propagation of <i>A. gaumeri</i> was more effective through medium cuttings, showing 96% with 0.06% auxin indolbutyric acid, whereas only 51% of seeds germinated. The results indicated that seasonal changes and edaphic conditions in the three populations influence the antifungal efficacy of the extracts from <i>A</i>. <i>gaumeri</i> roots. This study enhances the knowledge of the biology and sustainable management of the <i>A. gaumeri</i> plant and advances the development of a biorational product to control tropical fungal diseases.},
DOI = {10.32604/phyton.2025.066682}
}