Table 1.

Summary of PR proteins previously identified in latex-bearing plants.

PR Proteins	Function	Latex-Bearing Plant Species	Reference
PR 2	β-1,3-glucanases	Chelidonium majus Hevea brasiliensis	[78,83]
PR 3	Class I, II, IV, V, VI, VII Chitinases	Chelidonium majus Hevea brasiliensis	[78,83]
PR 4	Class I, II Chitinases	Chelidonium majus Hevea brasiliensis Carica papaya	[45,78,83]
PR 5	Thaumatin-like proteins	Chelidonium majus Hevea brasiliensis	[78,83]
PR 6	Proteinase inhibitor	Hevea brasiliensis Ficus carica Carica papaya	[44,45,83]
PR 7	Endoproteinase	Chelidonium majus Hevea brasiliensis	[78,83]
PR 8	Class III Chitinase	Hevea brasiliensis	[83]
PR 9	Peroxidase	Chelidonium majus Hevea brasiliensis Papaver somniferum	[78,83,84]
PR 10	Ribonuclease-like proteins	Chelidonium majus Papaver somniferum	[78,84]
PR 11	Class I Chitinase	Chelidonium majus	[78]
PR 12	Defensin	Chelidonium majus Hevea brasiliensis	[78,83]
PR 14	Lipid-transfer protein	Chelidonium majus Hevea brasiliensis	[78,83]
PR 15	Oxalate oxidase	Chelidonium majus	[78]
PR 16	Oxidase-like	Chelidonium majus	[78]
PR 17	Antifungal and antiviral	Chelidonium majus	[78]