Control of Alternaria Leaf Spot of the Common Bean (Phaseolus vulgaris L.) Using Soil-Derived Biological Agents

Table 2

Substrate utilization by the various bacterial isolates.

Isolate	Starch	CMC	Skimmed milk	Tributyrin	Citrate utilization	Phosphate solubilization
C1e	+++	++	−	−	++	++
LB3	++++	−	++	++	+++	+++
SB7a	++	++	++	++++	−	−
PM1c	++	−	−	++	++	++
C1	++	++	++	++++	−	++
C1c	++	+++	++	++	+++	+++
C1b	++++	−	++	++	−	++
C1f	++	−	−	++	++	++
U5GH	++	−	−	−	−	−
C16	++	++	++	++	++	++

Note. (++) indicates low activity (growth took >3 days), (+++) denotes moderate activity (growth took 2-3 days), (++++) indicates high activity (growth took <1 day), and (−) sign indicates absence of visible enzyme activity.