Ophiobolin A is a secondary phytotoxic metabolite produced by some pathogenic fungal species responsible for severe plant diseases, considered to play a role in disease development and symptom appearance. Herein we investigated whether the phytotoxic activities of ophiobolin A against weed species could be improved by nanoencapsulation. Given the rapid natural degradation of the compound, it was hoped that nanoencapsulation would prolong the phytotoxic effects or enhance the bioactivity, thus leading to improved weed control capabilities. This article presents an assessment of the effectiveness of encapsulated ophiobolin A on 11 commonly found weed species, compared to the pure ophiobolin, to the particle alone, and a combination of mixed particles and ophiobolin A, by applying the solution droplets to both intact or injured leaf surface, on the adaxial or abaxial side. The bioassays showed the improved efficacy of the encapsulated ophiobolin, and the need for leaf lesions to diffuse the particles into the tissues.[Formula: see text].
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http://dx.doi.org/10.1080/14786419.2020.1860975 | DOI Listing |
PLoS One
January 2025
Department of Feed Development, Madagascar Biodiversity Center, Antananarivo, Madagascar.
Gryllus madagascarensis (Orthoptera: Gryllidae) is a cricket species that shows promise to mitigate food insecurity and malnutrition. But whether this species will accept low- to no-cost weeds and agro by-products as feed, and how these feeds affect its performance, remains unknown. This study assessed the acceptability of 66 weed species and agro by-products (derived from a single plant species) by adult G.
View Article and Find Full Text PDFJ Agric Food Chem
January 2025
Institute of Science and Technology, Sao Paulo State University, Av. Três de Março, 511 - Alto da Boa Vista, 18087-180 Sorocaba, SP, Brazil.
Polymer-based herbicide nanocarriers have shown potential for increasing the herbicide efficacy and environmental safety. This study aimed to develop, characterize, and evaluate toxicity to target and nontarget organisms of natural-based polymeric nanosystems for glyphosate. Polymers such as chitosan (CS), zein (ZN), and lignin (LG) were used in the synthesis.
View Article and Find Full Text PDFPhysiol Mol Biol Plants
December 2024
Plant Molecular Biology Laboratory, M. S. Swaminathan Research Foundation, Third Cross Street, Taramani Institutional Area, Chennai, 600113 India.
Unlabelled: Hexaploid var. and tetraploid var. are major weeds in rice fields.
View Article and Find Full Text PDFPlant Dis
December 2024
College of Landscape Architecture and Horticulture, Kunming, China;
Dodder (Cuscuta spp.), particularly the species Cuscuta chinensis, is a parasitic weed known for its ability to infest a broad spectrum of plant species, thereby significantly affecting the stability and functionality of native ecosystems (Zhang, Xu et al. 2021).
View Article and Find Full Text PDFOpen Vet J
November 2024
Faculty of Veterinary Medicine, Universitas Brawijaya, Malang, Indonesia.
Background: (EO) L (Siam weed) is a highly invasive species that contains various beneficial active compounds. This study was conducted to explore the antibacterial properties of EO ethanol extract against Gram-positive and Gram-negative bacteria.
Aim: The aim of this study was to evaluate the antibacterial activity of EO ethanolic extract against various Gram-positive and Gram-negative bacteria to assess its potential as an antimicrobial agent.
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