id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-012085-ubdzhkfq	Jin, Tao	Diversity and quantity of ammonia-oxidizing Archaea and Bacteria in sediment of the Pearl River Estuary, China	2011-02-01		.txt	text/plain	4372	232	57	The diversity and abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the sediment of the Pearl River Estuary were investigated by cloning and quantitative real-time polymerase chain reaction (qPCR). From one sediment sample S16, 36 AOA OTUs (3% cutoff) were obtained from three clone libraries constructed using three primer sets for amoA gene. The terminal restriction fragment length polymorphism results showed that the relative abundance of AOB species in the sediment samples of different salinity were significantly different, indicating that salinity might be a key factor shaping the AOB community composition. Overall, AOB amoA gene copy number was 100 times lower than that of AOA, suggesting that the dominant ammonia-oxidizing microorganisms in the sediment of the Pearl River Estuary were AOA.	./cache/cord-012085-ubdzhkfq.txt	./txt/cord-012085-ubdzhkfq.txt