FIG 4.

Neighbor-joining (NJ) tree of Streptomyces two-domain LMCO gene fragments obtained from composting samples together with the reference sequences retrieved from GenBank. Values above branches indicate bootstrap support derived from 1,000 replicates. The occurrences of obtained laccase gene types are given in square brackets with their corresponding GenBank accession numbers. Day 0 (D0), D4, D8, D15, D30, and D50 indicate the sampling times; the number of occurrences at a given sampling time is given if >1. D0(3), for example, indicates that the sequence appeared three times in the sample from day 0.