title: Microbial communities play important roles in modulating paddy soil fertility.
abstract: We studied microbial communities in two paddy soils, which did not receive nitrogen fertilization and were distinguished by the soil properties. The two microbial communities differed in the relative abundance of gram-negative bacteria and total microbial biomass. Variability in microbial communities between the two fields was related to the levels of phosphorus and soil moisture. Redundancy analysis for individual soils showed that the bacterial community dynamics in the high-yield soil were significantly correlated with total carbon, moisture, available potassium, and pH, and those in the low-yield cores were shaped by pH, and nitrogen factors. Biolog Eco-plate data showed a more active microbial community in the high yield soil. The variations of enzymatic activities in the two soils were significantly explained by total nitrogen, total potassium, and moisture. The enzymatic variability in the low-yield soil was significantly explained by potassium, available nitrogen, pH, and total carbon, and that in the high-yield soil was partially explained by potassium and moisture. We found the relative abundances of Gram-negative bacteria and Actinomycetes partially explained the spatial and temporal variations of soil enzymatic activities, respectively. The high-yield soil microbes are probably more active to modulate soil fertility for rice production.
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.|Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
authors: Xuesong
authors: X
authors: Luo
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
authors: Xiaoqian
authors: X
authors: Fu
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
authors: Yun
authors: Y
authors: Yang
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.|Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
authors: Peng
authors: P
authors: Cai
authors: Crop Physiology and Production Center (CPPC), College of Plant Science and Technology, Huazhong Agricultural University, Wuhan Hubei 430070, China.
authors: Shaobing
authors: S
authors: Peng
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.
authors: Wenli
authors: W
authors: Chen
authors: State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China.|Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
authors: Qiaoyun
authors: Q
authors: Huang
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism; D039903:Actinobacteria / Q000201:enzymology / Q000302:isolation & purification*; D001192:Arylsulfatases / Q000378:metabolism; D018533:Biomass; D002244:Carbon / Q000737:chemistry / Q000378:metabolism; D006090:Gram-Negative Bacteria / Q000201:enzymology / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000737:chemistry / Q000378:metabolism; D012275:Oryza / Q000254:growth & development / Q000382:microbiology; D010743:Phospholipids / Q000032:analysis; D010758:Phosphorus / Q000737:chemistry / Q000378:metabolism; D025341:Principal Component Analysis; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology; D014510:Urease / Q000378:metabolism; D014867:Water / Q000737:chemistry; D043324:beta-Fructofuranosidase / Q000378:metabolism
chemical_list: D010743:Phospholipids; D012987:Soil; D014867:Water; D010758:Phosphorus; D002244:Carbon; D000135:Acid Phosphatase; D001192:Arylsulfatases; D043324:beta-Fructofuranosidase; D014510:Urease; D009584:Nitrogen