Table 1: Abundance of archaea and AOA in different parts of sponge Holoxea sp.

SampleCopy numberaAverage proportion of AOA
amoA (AOA)archaea 16S rRNA

T 5.10%
W 2.30%
J 4.24%
B 11.67%

aAverage copy numbers of target gene in one nanogram total genomic DNA. T: whole sponge tissue sample; W: sample of microbes loosely attached to the sponge surface and canals, choanocyte chambers; J: sample of microbes in the sponge mesohyl; B: the intracellular microbes sample.