Prevention methods to avoid transmission of pathogens, including HIV, are crucial in the control of infectious diseases, not only to block epidemic spread but to avoid long-term treatments leading to emergence of resistances and drug associated side effects. Together with vaccine development, the discovery of new virucidal agents represents a research priority in this setting. In the screening of new compounds with antiviral activity, three Guatemalan plant extracts from Justicia reptans, Neurolaena lobata and Pouteria viridis were evaluated with a classic antiviral assay and were found to inhibit HIV replication. This activity was corroborated by an original recombinant virus assay, leading us to perform a deeper study of the virucidal activity. Active fractions were non-toxic in vitro and also inhibited other enveloped viruses. Moreover, these fractions were able to inhibit the transfer of HIV from dendritic cells (DCs) to lymphocytes, that represents the main way of HIV spread in vivo.
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http://dx.doi.org/10.1016/j.phymed.2007.10.006 | DOI Listing |
Front Plant Sci
August 2024
Subtropical Horticulture Research Station, United States Department of Agriculture, Agriculture Research Service, Miami, FL, United States.
Introduction: Avocado () is a highly nutritious fruit gaining worldwide popularity. However, its cultivation is currently reliant on a limited number of cultivars with restricted genetic diversity. This study aims to investigate the genetic diversity and population structure of avocado germplasm and identify genetic loci associated with key fruit quality traits that influence customer preference.
View Article and Find Full Text PDFPlant Dis
January 2025
Department of Plant Pathology, Tropical Research and Education Center, University of Florida, Homestead, FL 33031, U.S.A.
Laurel wilt (LW), a lethal vascular disease caused by the ambrosia fungus , has severely reduced avocado ( Mill.) production in Florida and decimated populations of native lauraceous trees across 12 U.S.
View Article and Find Full Text PDFEnviron Entomol
October 2024
USDA-ARS, Daniel K. Inouye Pacific Basin Agricultural Research Station, Tropical Crop Commodity Protection Research Unit, Hilo, HI, USA.
Avocado lace bug, Pseudocysta perseae (Heidemann) (Hemiptera: Tingidae), is a sap-feeding insect that feeds on the underside of avocado leaves. First observed in 2019, P. perseae has spread throughout the Hawaiian islands, causing premature leaf drop and decrease in avocado yield.
View Article and Find Full Text PDFViruses
April 2023
INRAE, GAFL, 84140 Montfavet, France.
The dominant gene in pepper () confers resistance to members of six potyvirus species, all of which belong to the (PVY) phylogenetic group. The corresponding avirulence factor in the PVY genome is the NIb cistron (i.e.
View Article and Find Full Text PDFPlant Physiol Biochem
March 2023
Tropical Research and Education Center, University of Florida, 18905 S.W. 280 Street, Homestead, FL, 33031, USA. Electronic address:
Avocado (P. americana Mill.) trees are classified into three botanical races, Mexican (M), Guatemalan (G), and West Indian (WI), each distinguished by their geographical centers of origin.
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