The fine structure and water permeability of hypodermis isolated from roots of Clivia miniata have been studied. The hypodermis is composed of five layers of cells arranged in radial rows. The cell walls of these layers consist of primary and tertiary walls and suberized secondary walls which are lamellated. Water permeability of the isolates was low, around the value of 10Ð9 m sÐ1. This value ...

The fan shell P. nobilis (Linnaeus, 1758) is the largest marine bivalve in the Mediterranean Sea which acts as ecosystem engineer, offering an adequate substratum to several associated benthic species. P. nobilis is threatened by the reduction and loss of its natural habitat and by increased anthropogenic inputs into coastal waters. The knowledge on the population of this species are scarce, es...

Acetone extracts of selected plant species were evaluated for their in vitro cytotoxicity against a noncancerous African green monkey kidney (Vero) cell line and an adenocarcinoma cervical cancer (HeLa) cell line. The plants studied were Origanum vulgare L. (Oregano), Rosmarinus officinalis L. (Upright and ground cove rosemary), Lavandula spica L. (Lavender), Laurus nobilis L. (Bay leaf), Thymu...

The genetic backgrounds of many Citrus varieties are quite complex. Classifications and phylogenetic relationships of Citrus species have become the focus of researchs. Some conserved genes of chloroplast genome's research have been proven effective in determining the biosources of hybrids and phylogenetic analysis. Thus, we studied variations among the chloroplast trnL gene sequences of 10 Cit...

The infection of the estuarine teleost fishes Mugil gaimardianus Desmarest, 1831 (Mugilidae), Arius phrygiatus Valenciennes, 1839 (Ariidae), Conodon nobilis Linnaeus, 1759 (Haemulidae), Cetengraulis edentulus Cuvier, 1829 (Engraulidae), and Anableps anableps Linnaeus, 1758 (Anablepidae) by praniza larvae of Gnathiidae (Crustacea, Isopoda) was studied in specimens fished off the Atlantic Ocean i...

The ability of juvenile Laurus nobilis and Acer negundo plants to refill embolized xylem vessels was tested under conditions of soil drought when xylem sap pressure was substantially negative, thus violating the expected condition that pressure must rise to near atmospheric for refilling. Intact potted plants were dried to a stem water potential ( Y W ) corresponding with approximately 80% loss...

Translocation can reduce extinction risk by increasing population size and geographic range, and is increasingly being used in the management of rare and threatened plant species. A critical determinant of successful plant establishment is light environment. Wollemia nobilis (Wollemi pine) is a critically endangered conifer, with a wild population of 83 mature trees and a highly restricted dist...

This study sought to develop a biological control agent against gray mold disease caused by Botrytis cinerea in tomato using a strain of Streptomyces, which showed significant antagonistic activity against B. cinerea. Such strain (C51) was screened by dual culture method from a total of 78 actinomycetes and was identified as Streptomyces nobilis by morphological, biochemical and molecular analy...

Several bivalve species produce byssus threads to provide attachment to substrates, with mechanical properties highly variable among species. Here, we examined the distal section of byssal threads produced by a range of bivalve species (Mytilus edulis, Mytilus trossulus, Mytilus galloprovincialis, Mytilus californianus, Pinna nobilis, Perna perna, Xenostrobus securis, Brachidontes solisianus an...