The existence of pronounced cytoplasmic pH gradients within the apices of tip-growing cells, and the role of cytoplasmic pH in regulating tip growth, were investigated in three different cell types: vegetative hyphae of Neurospora crassa; pollen tubes of Agapanthus umbellatus; and rhizoids of Dryopteris affinis gametophytes. Examination of cytoplasmic pH in growing cells was performed by simult...

background and objectives: the main aims of this study have been finding out the antibacterial activity and preliminary phytochemical screening of some fern species. methods: the antimicrobial activity of the methanol extracts of polypodium interjectum shivas, polystichum woronowii fomin, polystichum aculeatum (l.) roth., dryopteris affinis (lowe) fraser-jenk, athyrium filix-femina (l.) roth, a...

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Tatsushi Matsubayashi,1,∗) Ryo Yamazaki,2,∗∗) Daisuke Yonetoku,3,∗∗∗) Toshio Murakami,3,†) and Toshikazu Ebisuzaki1,††) 1Ebisuzaki Computational Astrophysics laboratory, Institute of Physical and Chemical Research (RIKEN) Hirosawa 2-1, Wako, Saitama, 351-0198 Japan 2Department of Earth and Space Science, Osaka University, Toyonaka 560-0043, Japan 3Department of Physics, Kanazawa University, Kak...

Dictyophora indusiata (Vent. ex Pers.) Fish Phallaceae (Chinese name Zhu-Sūn, the bamboo fungi) has been used as a medicinal mushroom to treat many inflammatory, gastric and neural diseases since 618 AD in China. We hypothesize that the soluble polysaccharides (SP) present in D. indusiata and their monosaccharide profiles can act as an important role affecting the antioxidative capability, whic...

Here, I describe the geographical distribution of the savanna types in Namibia and identify the factors controlling the occurrence of each savanna type in relation to the amount of annual precipitation and the various physiographical regions, including the mopane ( Colophospermum mopane) area. The different types of savanna can be distinguished on the basis of the leaf habits of the dominant ve...

Nitrogen and phosphorus are considered the most important limiting elements in terrestrial and aquatic ecosystems. however, very few studies have focused on which is from forested streams, a bridge between these two systems. To fill this gap, we examined the concentrations of dissolved N and P in storm waters from forested watersheds of five regions in Japan, to characterize nutrient limitation...