After logging, 17% of the stumps left in pondcypress (Taxodium distichum var. nutans) swamps produced sprouts that persisted for several years. Significantly more sprouts were present on stumps with diameters < 60 cm (perhaps left from younger trees) and shorter than 70 cm. Stumps in large openings and from trees cut in winter tended to have more sprouts than stumps left in thinned swamps and f...

Pisolithus albus (Basidiomycota, Sclerodermataceae) is reported here for the first time from Egypt where it was found on Karaman Island in Sohag Governorate. It forming an ectomycorrhizal association with Eucalyptus occidentalis and Vachellia nilotica. The fungus also near two potentially new hosts: Paspalum distichum Dodonaea viscosa; however, mycorrhizal connections these hosts not proven. Ph...

Past medicinal plant research primarily focused on bioactive phytochemicals, however, the focus is currently shifting due to the recognition that a significant number of phytotherapeutic compounds are actually produced by associated microbes or through interaction with their host. Medicinal plants provide an enormous bioresource of potential use in modern medicine and agriculture, yet their mic...

Immature detached cereal caryopses from barley (Hordeum vulgare L. var distichum cv Midas) and wheat (Triticum aestivum L. cv Sicco) were shown to be capable of fixing externally supplied (14)CO(2) in the light or dark. Green cross cells and the testa contained the majority of the (14)C-labeled material. Some (14)C-labeled material was also found in the outer, or transparent, layer and in the e...

Field observations indicate that the distribution of certain forest tree species is modified by periodic flooding of the soil. There appear to be distinct differences between species with respect to the amount of flooding which they will tolerate. Overcup oak, for example, often occurs on areas which are flooded for considerable periods of time during the year, but northern red oak usually occu...