during the years 2007 and 2008, samples of winter jasmine (jasminum nudiflorum) with symptoms of galls on shoots were collected from shiraz, fars province, iran. gram and oxidase negative, aerobic bacterium that produced fluorescent pigment on kingۥs b medium was isolated from galls of infected trees. all isolates produced a hypersensitive reaction in tobacco. they were negative in arginine dih...

Microwave irradiation of glutaraldehyde-immersed samples was evaluated for the chemical fixation of 3-week-old galls that resulted from the infection of tomato roots (Lycopersicon esculentum) by a root-knot nematode, Meloidogyne incognita. Observation by transmission electron microscopy indicated that the best results were obtained when vials containing the intact galls were immersed in buffere...

Meloidogyne javanica and Rotylenchulus reniformis are important nematode pests of pigeonpea. Greenhouse evaluation of 66 accessions of 25 species of Cajanus, Rhynchosia, and Flemingia for resistance to M. javanica based on number and size of galls, galled area of root, and number of egg masses showed resistance to be available in these wild relatives of pigeonpea. Thirty-five accessions had </=...

_____________________________________________________________________________________ ABSTRACT: Momordica charantia roots were histologically examined for the interaction of Meloidogyne incognita and the fungus Paecilomyces lilacinus which was applied at different time intervals. Meloidogyne incognita induced large sized galls on the plants which were treated with P.lilacinus. Fully mature fema...

Pistacia integerrima is one of twenty species among the genus Pistacia. Long horn-shaped galls that develop on this plant are harvested and used in Ayurveda and Indian traditional medicine to make "karkatshringi", a herbal medicine used for the treatment of asthma and different disorders of respiratory tract. However, until now, the molecular mechanisms of action of "karkatshringi" and its chem...

AIMS Though plant metabolic changes are known to occur during interactions with bacteria, these were rarely challenged for pharmacologically active compounds suitable for further drug development. Here, the occurrence of specific chemicals with antiproliferative activity against human cancer cell lines was evidenced in hyperplasia (leafy galls) induced when plants interact with particular phyto...

Gall inducing insects most frequently oviposit in young tissues because these tissues have higher metabolism and potential for differentiation. However, these insects may also successfully establish in mature tissues as was observed in the super-host Copaifera langsdorffii. Among C. langsdorffii gall morphotypes, one of the most common is a midrib gall induced by an undescribed species of Cecid...

This study was to determine whether Arthrobotrys flagrans, A. oligospora, and Meria coniospora would control the root-knot nematode Meloidogyne hapla on alfalfa and tomato. Alfalfa seeds were coated with a fungus-rye powder in 2% cellulose and were planted in infested soil. Three-week-old seedlings from seed treated with M. coniospora had 60% and 58% fewer galls in two experiments than did seed...

Interspecific competition has been identified as a major structuring force in phytophagous arthropod communities. We would expect to find particularly strong competitive effects in communities with outbreaking components, where the joint food resource is depleted by a single super-abundant species. To assess how arthropod assemblages of the trembling aspen (Populus tremuloides, Salicaceae) resp...

In the social aphid Nipponaphis monzeni, a unique gall-repairing behaviour has been known: when a hole is made on the gall, many soldier nymphs discharge body fluid on the breach, which promptly solidifies and plugs the hole. Here, we experimentally investigated the subsequent fate of repaired galls and their inhabitants. Irrespective of natural repair by soldier nymphs or artificial repair wit...