AIM The aim of the study is to investigate the antibacterial activity of 10 volatile oils extracted from medicinal plants, including galangal (Alpinia galanga Linn.), ginger (Zingiber officinale), plai (Zingiber cassumunar Roxb.), lime (Citrus aurantifolia), kaffir lime (Citrus hystrix DC.), sweet basil (Ocimum basilicum Linn.), tree basil (Ocimum gratissimum), lemongrass (Cymbopogon citratus D...

Two isolates of Pratylenchus coffeae were collected from coffee roots (in Marília, São Paulo State, Brazil) and Aglaonema (in Rio de Janeiro City, Rio de Janeiro State, Brazil) and maintained in the laboratory on alfalfa callus. Twenty-four plants were tested in the greenhouse to characterize the host preference of these isolates. The host ranges of the isolates differed from each other and, in...

LIKUBIN has been prevalent in Taiwan since 1958, attacking most of the commercial varieties such as ponkan, tankan, and sweet orange. Formerly thought to be due to unfavorable soil conditions, such as high moisture content and deficiency of essential nutrients, or to root rot, it was subsequently demonstrated to be caused by an infectious agent believed to be closely related to tristeza virus b...

ABSTRACT Citriculture is a growing industry in Pará state, Brazil, but information regarding fruit flies and their associated parasitoids this region lacking. To address gap knowledge, we collected oranges (Citrus sinensis), lime (C. common sweet limes limettioides), citrons medica) mandarins reticulata). We recorded field infestation by Anastrepha obliqua C. sinensis under natural conditions f...

In this study we investigated the prevalence of the oppA gene, encoding the oligopeptide binding protein (OppA) of the major bacterial oligopeptide uptake system (Opp), in different species of the genus Xanthomonas. The oppA gene was detected in two Xanthomonas axonopodis strains among eight tested Xanthomonas species. The generation of an isogenic oppA-knockout derivative of the Xac 306 strain...

The search for alternative rootstocks to the ‘Rangpur’ lime tree is a challenge sustainability of citrus in Tabuleiros Costeiros (Coastal Tablelands) Northeastern Brazil. New varieties should meet high drought tolerance with water deficit, cohesive soils, resistance diseases and inducing production fruit. In this work, performance ‘Pera’ sweet orange was evaluated on ‘Tropical Sunki’ mandarin 2...

A comparative study between the antioxidant properties of peel (flavedo and albedo) and juice of some commercially grown citrus fruit (Rutaceae), grapefruit (Citrus paradisi), lemon (Citrus limon), lime (Citrusxaurantiifolia) and sweet orange (Citrus sinensis) was performed. Different in vitro assays were applied to the volatile and polar fractions of peels and to crude and polar fraction of ju...