Average number of bacteria per square cm of leaf surface

Range 1,000,000 - 10,000,000 bacteria/cm^2 of leaf surface
Organism Plants
Reference Vorholt JA. Microbial life in the phyllosphere. Nat Rev Microbiol. 2012 Dec10(12):828-40. doi: 10.1038/nrmicro2910 p.828 left column top paragraphPubMed ID23154261
Primary Source [3] Lindow SE, Brandl MT. Microbiology of the phyllosphere. Appl Environ Microbiol. 2003 Apr69(4):1875-83.PubMed ID12676659
Comments P.828 left column top paragraph: "The leaf surface habitat is vast: vegetation modelling [ref 2 BNID 115366] gives an estimated global leaf area of 508,630,100 km^2, which corresponds to 1,017,260,200 km^2 of upper and lower leaf surface, an area approximately twice as great as the land surface. Assuming that there are on average 10^6−10^7 bacteria per square cm of leaf surface [primary source], the global bacterial population present in the phyllosphere could comprise up to 10^26 cells." Primary source p.1875 left column top paragraph: "Bacteria are by far the most numerous colonists of leaves, often being found in numbers averaging 10^6 to 10^7 cells/cm^2 (up to 10^8 cells/g) of leaf (refs 1, 7, 41 of primary source)."
Entered by Uri M
ID 115367