Hemiptera plant. Phloem sap, which has a higher concentration of sugars and nitrogen, is under positive pressure unlike the more dilute xylem sap. Most of the Sternorrhyncha and a number of Auchenorrhynchan groups feed on phloem. Phloem feeding is common in the Fulgoromorpha, most Cicadellidae and in the Heteroptera. The Typhlocybine Cicadellids specialize in feeding on non-vascular mesophyll tissue of leaves, which is more nutritious than the leaf epidermis. Most Heteroptera also feed on mesophyll tissue where they are more likely to encounter defensive secondary plant metabolites which often leads to the evolution of host specificity. Obligate xylem feeding is a
Irving Tissue brand in Canada. In 2004, Irving Personal Care opened a New Brunswick plant to produce private label baby diapers and training pants for major North American retailers. In 2010, major investments in buildings and a new through air dried paper machine at the Irving Tissue site in Fort Edward increased capacity and improved product quality. Currently, Irving Tissue manufactures products under the Majesta and Royale brands in Canada and the Scotties brand in the United States. Irving Tissue is an unsyndicated company. Irving Tissue Irving Tissue Company Limited is a tissue products producing company, owned by J.D. Irving Limited. It