Table 7. The percent of the nodule-associated bacterial genera with the potential for specific plant growth promoting (PGP) activities found within the root nodules of 1-year-old (IP1yr), 2-year-old (IP2yr), 13-year-old (IP13yr), and old growth (IPOG) Inga punctata. The PGP activities shown are for protease, lipase, and cellulase enzymatic, phosphate solubilization activity (PO4 Sol), auxin production (IAA or Indole-3-acetic acid), siderophore production (Sideroph), N-fixation (N-Fix), ammonium oxidation or nitrification (AMO), and CO₂/other C1 fixations (CO₂/C1 fix).

Tree Age Nodules	Protease	Lipase	Cellulase	PO4 Sol	IAA	Sideroph	N-Fix	AMO	CO2/C1 Fix	Mean % of all activities
IP1yr	38.46	25	76.92	53.85	69.23	61.54	69.23	38.46	69.23	55.77 ± 17.94
IP2yr	25	16.67	58.33	25	41.67	41.67	66.67	41.67	58.33	41.67 ± 17.18
IP13yr	25	23.08	43.75	31.25	50	37.5	68.75	43.75	50	41.45 ± 14.27
IPOG	22.22	16.67	38.89	27.78	44.44	50	61.11	38.89	44.44	38.27 ± 14.01