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
SAP SE to product development. Worldwide customer support is not provided by the field organizations but by a unified organization called Active Global Support (AGS). SAP Labs are R&D locations that develop and improve SAP core products. SAP Labs are strategically located in high-tech clusters around the globe. SAP Labs are located in Germany (main locations: Walldorf/Rot, Markdorf, Berlin), United States (main location: Silicon Valley), India (main location: Bangalore), China (main location: Shanghai), Brazil (main location: Sao Leopoldo), Bulgaria (main location: Sofia), Canada (main locations: Vancouver, Montreal), Vietnam (main location: Ho Chi Minh City), Israel (main location: Ra'anana), CIS (main location: Moscow),