Yellow leaf curl disease caused by begomoviruses has emerged as a major limitation to the production of eggplant (Solanum melongena) in several regions world. Tomato yellow Kanchanaburi virus (TYLCKaV) is bipartite begomovirus isolated from diseased areas Indochinese peninsula, South China, and Maritime Southeast Asia. In this study, five species Indonesia, including TYLCKaV, were inoculated us...

We tested the effects of the flavonoid 3-methoxi-5,6,7,8-hydroxy-4’hydroxy flavone (NMHTV) isolated from shoots of non arbuscular mycorrhizal (AM) inoculated clover, and of the flavonoids 5,6,7,8-hydroxy-3-methoxy flavone (MH-1); 5,6,7,8-hydroxy-4’hydroxy flavone (MH-2); and 5,7-hydroxy-3,4’-methoxy flavone (MH-3); isolated from AM clover (Trifolium repens) shoots, on spore germination, hyphal ...

To provide information on the ecology of Pseudomonas aeruginosa in nature, bacteriological surveillance was performed in the defined area in Hokkaido, Japan. P. aeruginosa was isolated from water samples of Ushubetsu River in the down stream from the urban area of Asahikawa. P. aeruginosa was isolated from fecal samples of pigs but not from samples of soil of a tomato field, sand of sandboxes i...

The presence of a single resistance (R) gene allele can determine plant disease resistance. The protein products of such genes may act as receptors that specifically interact with pathogen-derived factors. Most functionally defined R-genes are of the nucleotide binding site-leucine rich repeat (NBS-LRR) supergene family and are present as large multigene families. The specificity of R-gene inte...

Isolated tomato (Lycopersicon esculentum var. Kc 146) fruit mitochondria could be stored successfully in the frozen state without a cryoprotective agent if the mitochondria were frozen quickly by immersion in liquid nitrogen and later thawed quickly at 30 C. Criteria of freezing damage were rate of respiration, adenosine diphosphate to oxygen ratio, and respiratory control ratio. Marked reducti...

We isolated the 5’ upstream promoter regions of the fruit-type sucrose synthase (SS) gene from tomato and Japanese pear by inverse PCR. The 5’ region of the tomato SS gene (TOMSSF) contained an intron approximately 1.6 kbp long in the 5’untranslated region, whereas the equivalent 5’ region in the Japanese pear SS gene (PypSUS1) had no intron. Each region was fused to the β-glucuronidase (GUS) g...

The work reported here evaluates whether bacteria populating arid and salty environments can confer resistance in tomato and pepper plants to water stress. Plant growth-promoting bacteria that have ACC deaminase activity were isolated from soil samples taken from the Arava region of southern Israel. One of these strains, Achromobacter piechaudii ARV8 [Mayak et al., Plant growth-promoting bacter...

To investigate the regulation of gene expression during male gametophyte development, we analyzed the promoter activity of two different genes (LAT52 and LAT59) from tomato, isolated on the basis of their anther-specific expression. In transgenic tomato, tobacco and Arabidopsis plants containing the LAT52 promoter region fused to the beta-glucuronidase (GUS) gene, GUS activity was restricted to...

phytoplasmal big bud is one of the important diseases of tomato (lycopersicon esculentum) in the world. the disease has been reported from iranian provinces of bushehr, isfahan, fars, khorasane razavi and ardabil. during a summer surrvey in 2010, symptoms of big bud disease was observed in tomato fields of dorood area in lorestan province. characteristic symptoms of the disease were small thick...