Structure and function of soil microbial community in artificially planted Sonneratia apetala and S. caseolaris forests at different stand ages in Shenzhen Bay, China

Yang, Qiong; Lei, Anping; Li, F.L.; Liu, L.N.; Zan, Qijie; Shin, Paul K.S.; Cheung, S.G.; Tam, N.F.Y.

doi:10.1016/j.marpolbul.2014.02.024

Cited by 44 publications

(18 citation statements)

References 40 publications

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“…The observation was consistent with previous reports (Andreote et al, 2012; Hong et al, 2015; Zhang et al, 2015). Among the Proteobacteria, Gamma-proteobacteria, Delta-proteobacteria, and Alpha-proteobacteria were the three most abundant classes in our sampling sites ( Supplementary Figure S1B ), in agreement with previous findings in Aegiceras corniculatum , Avicennia marina , and Sonneratia caseolaris (Yang et al, 2014; Alzubaidy et al, 2016; Chen et al, 2016). These results suggest that Alpha-, Gamma-, and Epsilon-proteobacteria are prevalent in mangrove plants.…”

Section: Discussionsupporting

confidence: 93%

Diverse Profiles of AI-1 Type Quorum Sensing Molecules in Cultivable Bacteria from the Mangrove (Kandelia obovata) Rhizosphere Environment

Lao

Jin

et al. 2016

Front. Microbiol.

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Mangrove rhizosphere environment harbors diverse populations of microbes, and some evidence showed that rhizobacteria behavior was regulated by quorum sensing (QS). Investigating the diverse profiles of QS molecules in mangrove ecosystems may shed light on the bacterial roles and lead to a better understanding of the symbiotic interactions between plants and microbes. The aims of the current study focus on identifying AI-1 type QS signals, i.e., acyl homoserine lactones (AHLs), in Kandelia obovata rhizosphere environment. Approximately 1200 rhizobacteria were screened and 184 strains (15.3%) tested were positive. Subsequent 16s rRNA gene sequencing and dereplication analyses identified 24 species from the positive isolates, which were affiliated to three different phyla, including Proteobacteria, Firmicutes, and Actinobacteria. Thin-layer chromatography separation of extracts revealed diverse AHL profiles and detected at least one active compound in the supernatant of these 24 cultivable AHL-producers. The active extracts from these bacterial isolates were further evaluated by ultra performance liquid chromatography-mass spectrometry, and the carbon side chain length ranged from C4 to C14. This is the first report on the diversity of AI-1 type auto-inducers in the mangrove plant K. obovata, and it is imperative to expand our knowledge of plant-bacteria interactions with respect to the maintenance of wetland ecosystem health.

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Section: Discussionsupporting

confidence: 93%

Diverse Profiles of AI-1 Type Quorum Sensing Molecules in Cultivable Bacteria from the Mangrove (Kandelia obovata) Rhizosphere Environment

Lao

Jin

et al. 2016

Front. Microbiol.

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“…The reasons remain unknown. Our finding that insignificant changes of microbial PLFAs accompanied by notable variations in soil enzyme activities in different developmental stages was consistent with that of Yang et al [49], possibly suggesting that not all microbes participate in nutrient metabolism.…”

Section: Effect Of Stand Age On Microbial Communities and Enzyme Actisupporting

confidence: 93%

“…However, contrary to our hypothesis, microbial biomass showed no significant variations at different developmental stages (Figure 2). Mackay et al and Smith et al also found this phenomenon in mixed-species forests [14,48]; Yang et al found that total PLFA abundance significantly changed only in the first 2 or 4 years in artificially planted Sonneratia apetala and Sonneratia caseolaris stands, pointing out that microbial biomass might have reached a stable state in the first few years [49]. AMF plays an important role in improving soil fertility [12,50], and Luo et al found the highest amounts of AMF in the oldest Picea asperata plantations (50-year) [51].…”

Section: Effect Of Stand Age On Microbial Communities and Enzyme Actimentioning

confidence: 87%

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Miao

Kang

et al. 2019

Forests

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Although Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) is an important species for wood production in subtropical China, it serious declines in soil nutrients and timber productivity in plantations have been reported, probably caused by successive rotation and inappropriate cutting time. Although the significant effect of stand age on soil properties has been widely recognized, research on soil enzymes and microbial communities is relatively rare. In this study, assuming that short rotation period is one important reason for soil degradation, we measured soil physicochemical properties, microbial community composition, and enzyme activity in 3-, 15-, 25- and 45-year Chinese fir forests in Jiangxi province of China. Soil organic carbon (SOC) content decreased from 3-year to 25-year stands and then increased in 45-year stands. Despite the significant relationship between SOC and the abundance of total phospholipid fatty acids (PLFAs), no notable changes in the abundance of PLFAs were detected with increasing tree ages, except for the abundances of arbuscular mycorrhizal fungi (AMF) which were significantly higher in 25-year stands. However, the ratios of gram-positive to gram-negative bacteria (G+/G−) and fungi to bacteria (F/B) both decreased with increasing stand age. 45-year stands showed the highest activities of both phosphatase and β-glucosidase. Total potassium (TK) content and net N mineralization rate both had significant links with soil microbial community structure. Collectively, our study emphasized that stand age could significantly affect soil physicochemical properties and the microbial community. In general, 25-year stands showed poorer soil status compared to that of 45-year stands. Thus, the cutting age of Chinese fir should be increased to over 25 years to maintain a better soil status.

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“…Knowledge of the factors influencing soil microorganisms is fundamental for sustainable environmental management. Previous studies have demonstrated that forest age is an important factor affecting soil microbial community structure [ 11 , 12 ] and enzyme activities [ 13 , 14 ]. The quantity and quality of plant litter and root exudates determine the nutrient resources for soil microbial community [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Soil microbial communities and enzyme activities in sea-buckthorn (Hippophae rhamnoides) plantation at different ages

Yang

2018

PLoS ONE

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The aim of this study was to assess the impact of forest age and season on the soil microbial community and enzyme activities in sea-buckthorn plantation system and to determine the relative contributions to soil microbial properties. Soil sampling was carried out in the dry season (April) and wet season (September) in four areas, including: abandoned farmland (NH), an 8-year- old plantation (young plantation, 8Y), a 13-year-old plantation (middle-aged plantation, 13Y), and an 18-year-old plantation (mature plantation, 18Y). The results showed that forest age and season have a significant effect on soil microbial community structure and enzyme activities. The total, bacterial, fungal, Gram-negative (G+), and Gram-positive (G-) PLFAs increased gradually with forest age, with the highest values detected in 18Y. All the detected enzyme activities showed the trend as a consequence of forest age. The microbial PLFAs and soil enzyme activities were higher in the wet season than the dry season. However, there were no significant interactions between forest age and season. A Correlation analysis suggested that soil microbial communities and enzyme activities were significantly and positively correlated with pH, total nitrogen (TN) and available phosphorus (AP). Season had a stronger influence on soil microbial communities than forest age. In general, sea-buckthorn plantations establishment might be a potential tool for maintaining and increasing soil fertility in arid and semi-arid regions.

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Structure and function of soil microbial community in artificially planted Sonneratia apetala and S. caseolaris forests at different stand ages in Shenzhen Bay, China

Cited by 44 publications

References 40 publications

Diverse Profiles of AI-1 Type Quorum Sensing Molecules in Cultivable Bacteria from the Mangrove (Kandelia obovata) Rhizosphere Environment

Diverse Profiles of AI-1 Type Quorum Sensing Molecules in Cultivable Bacteria from the Mangrove (Kandelia obovata) Rhizosphere Environment

Prolonging Rotation of Chinese Fir to over 25 Years Could Maintain a Better Soil Status in Subtropical China

Soil microbial communities and enzyme activities in sea-buckthorn (Hippophae rhamnoides) plantation at different ages

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