We investigated a destructive pathogenic variant of the plant pathogen Ralstonia solanacearum that was consistently isolated in Martinique (French West Indies). Since the 1960s, bacterial wilt of solanaceous crops in Martinique has been caused primarily by strains of R. solanacearum that belong to either phylotype I or phylotype II. Since 1999, anthurium shade houses have been dramatically affe...

BACKGROUND AND AIMS There are several studies suggesting that tomato (Solanum lycopersicum) chromoplasts arise from chloroplasts, but there is still no report showing the fluorescence of both chlorophylls and carotenoids in an intermediate plastid, and no video showing this transition phase. METHODS Pigment fluorescence within individual plastids, isolated from tomato fruit using sucrose grad...

Endophytic Trichoderma is a fungus found in plant tissue and has the potential as biological control agent. The aim of this study was to endophytic isolated from tomato roots, stems leaves Phytophthora infestans fruit rot growth yield plants. treatments that were tested tricoderma plants applied with doses 50, 75, 100 g per plant, respectively. experimental design used completely randomized thr...

Fusarium spp. damages the roots of crops, its control is with synthetic fungicides, however, marine actinomycetes can be an option to use agrochemicals. The objective this work was identification and morphological characterization as antagonists solani (Mart.) Sacc. isolated from diseased tomato plants mangrove sediment actinomycetes, both identified through taxonomic keys molecular techniques....

powdery mildew is one of the most important disease concerns of tomato production in different regions of the world, which is caused by different species of erysiphales. the most important causal agents of which are leveillula taurica and oidium neolycopersici. in the present study tomato farms in qazvin province were surveyed and tomato leaves with powdery mildew symptoms were collected. after...

The phloem-feeding whitefly Bemisia tabaci is a serious pest to a broad range of host plants, including many economically important crops such as tomato. These insects serve as a vector for various devastating plant viruses. It is known that whiteflies are capable of manipulating host-defense responses, potentially mediated by effector molecules in the whitefly saliva. We hypothesized that, bes...

Triterpenoids are a group of structurally diverse specialized metabolites that frequently show useful bioactivities. These chemicals are biosynthesized from the common precursor 2,3-oxidosqualene in plants. The carbon skeletons produced by oxidosqualene cyclase (OSC) are usually modified by cytochrome P450 monooxygenases (P450s) and UDP-dependent glycosyltransferases. These biosynthetic enzymes...