This study aims to evaluate the role of extraradical mycelium arbuscular mycorrhizal fungi in Pb transport. We also investigate how these fungi, alone or combined with mycoremediated dry olive residue (MDOR), provide protection against Pb. established a container system consisting central compartment and two lateral compartments separated by hydrophobic membrane. The was filled sterilized soil ...

Host-parasite relationships of Meloidogyne incognita acrita and Pratylenchus penetrans were compared on three closely related cultivars of tomato: 'Nemared', resistant to root-knot nematodes; 'Hawaii 7153', moderately resistant; and 'B-5', susceptible. Root-knot nematode larvae induced typical galls on the roots of B-5; larvae that entered Nemared were walled-off by necrotic cells; both reactio...

Belowground symptoms of sugar beet caused by the beet cyst nematode (BCN) Heterodera schachtii include the development of compensatory secondary roots and beet deformity, which, thus far, could only be assessed by destructively removing the entire root systems from the soil. Similarly, the symptoms of Rhizoctonia crown and root rot (RCRR) caused by infections of the soil-borne basidiomycete Rhi...

Aluminum in acidic conditions is toxic to plants. Aluminum tolerance in some plant species has been ascribed to arbuscular mycorrhizal fungal symbiosis. In this study, the application of aluminum was found to inhibit mycelia development of saprobe fungi Fusarium concolor and Trichoderma koningii and the hyphal length of the arbuscular mycorrhizal fungi Glomus mosseae and Glomus deserticola in v...

Field and growth chamber experiments were conducted to determine the effect of five initial densities (Pi - 20 - 240/100 cm(3) soil) of Meloidogyne hapla on carrot development and yield of storage roots at maturity. Carrots growing in infested and noninfested organic soil were harvested after 15, 29, 44, 59, and 106 days of growth in controlled environment chambers and after l l 0 days in field...

Salinity is a major problem that seriously impacts agricultural production, particularly of tomato (Solanum lycopersicum L.). However, the plant has ability to associate with Arbuscular Mycorrhizal Fungi better tolerate salt stress. Thus, thanks extension AMF hyphae, hydromineral nutrition and tolerance excess toxic ions (Na+ Cl-) are optimized. In this context, contribution stress two varietie...

High infection rates of roots of wild kiwifruit (Actinidia chinensis Planch) and soil infestation by a root-knot nematode were found in Anshun, GuiZhou Province, China. Morphology, esterase phenotype and molecular analyses confirmed that this nematode was different from previously described root-knot nematodes. In this report, the species is described, illustrated and named Meloidogyne aberrans...

1. Bird, A. F. 1969. The influence of tobacco ringspot virus and tobacco mosaic virus on the growth of Meloidogyne javanica. Nematologica 15:201-209. 2. Goswami, B. K., S. Singh, and V. S. Verma. 1974. Interaction of a mosaic virus with root-knot nematode Meloidogyne incognita in Vigna sinensis. Nematologica 20:366-367. 3. Ryder, H. W., and H. W. Crit tenden. 1962. Interrelationships of tobacco...

Interactions between root-knot nematodes and viruses were recently reviewed by Taylor (4). Compared to virus-free cowpea (vigna sinensis Endl.), cowpea mosaic virus-infected plants formed fewer galls on roots in response to infection by Meloidogyne incognita (Kofoid and White) Chitwood (2). On the other hand, tobacco plants (Nicotiana tabacum L.) infected with tobacco ringspot virus (TRSV) and ...

Pulsatilla koreana, a species endemic to Korea, is an important herb used in traditional medicine to treat amoebic dysentery and malaria. In the present study, 23 oleanane-type triterpenoid saponins 1-23 and eight lupane-type triterpenoid saponins 24-31 were isolated from the roots of P. koreana. Their structures were elucidated on the basis of spectroscopic data. The methanol extract and isola...