The role of soil bacterial community during winter fallow period in the incidence of tobacco bacterial wilt disease

2018 ◽  
Vol 102 (5) ◽  
pp. 2399-2412 ◽  
Author(s):  
Yunhua Xiao ◽  
Xueduan Liu ◽  
Delong Meng ◽  
Jiemeng Tao ◽  
Yabing Gu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Bacterial Wilt ◽  
Wilt Disease ◽  
Soil Bacterial Community ◽  
Fallow Period ◽  
Bacterial Wilt Disease ◽  
Soil Bacterial ◽  
Winter Fallow

Insight into the effects of different cropping systems on soil bacterial community and tobacco bacterial wilt rate

2016 ◽  
Vol 57 (1) ◽  
pp. 3-11 ◽  
Author(s):  
Jiaojiao Niu ◽  
Jin Chao ◽  
Yunhua Xiao ◽  
Wu Chen ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Bacterial Wilt ◽  
Cropping Systems ◽  
Soil Bacterial Community ◽  
Soil Bacterial ◽  
Insight Into

scholarly journals Influence of Acacia mangium on Soil Fertility and Bacterial Community in Eucalyptus Plantations in the Congolese Coastal Plains

2020 ◽  
Vol 12 (21) ◽  
pp. 8763 ◽  
Author(s):  
Lydie-Stella Koutika ◽  
Alessia Fiore ◽  
Silvia Tabacchioni ◽  
Giuseppe Aprea ◽  
Arthur Prudêncio de Araujo Pereira ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Soil Fertility ◽  
Bacterial Community Structure ◽  
Soil Bacterial Community ◽  
Coastal Plains ◽  
Mixed Species ◽  
Eucalyptus Plantations ◽  
Soil Bacterial

Productivity and sustainability of tropical forest plantations greatly rely on regulation of ecosystem functioning and nutrient cycling, i.e., the link between plant growth, nutrient availability, and the microbial community structure. So far, these interactions have never been evaluated in the Acacia and Eucalyptus forest planted on infertile soils in the Congolese coastal plains. In the present work, the soil bacterial community has been investigated by metabarcoding of the 16S rRNA bacterial gene in different stands of monoculture and mixed-species plantation to evaluate the potential of nitrogen-fixing trees on nutrient and bacterial structure. At the phylum level, the soil bacterial community was dominated by Actinobacteria, followed by Proteobacteria, Firmicutes, and Acidobacteria. A principal coordinate analysis revealed that bacterial communities from pure Eucalyptus, compared to those from plantations containing Acacia in pure and mixed-species stands, showed different community composition (beta-diversity). Regardless of the large variability of the studied soils, the prevalence of Firmicutes phylum, and lower bacterial richness and phylogenic diversity were reported in stands containing Acacia relative to the pure Eucalyptus. Distance-based redundancy analysis revealed a positive correlation of available phosphorus (P) and carbon/nitrogen (C/N) ratio with bacterial community structure. However, the Spearman correlation test revealed a broad correlation between the relative abundance of bacterial taxa and soil attributes, in particular with sulfur (S) and carbon (C), suggesting the important role of soil bacterial community in nutrient cycling in this type of forest management. Concerning mixed plantations, a shift in bacterial community structure was observed, probably linked to other changes, i.e., improvement in soil fertility (enhanced P and C dynamics in forest floor and soil, and increase in soil N status), and C sequestration in both soil and stand wood biomass with the great potential impact to mitigate climate change. Overall, our findings highlight the role of soil attributes, especially C, S, available P, and C/N ratio at a lesser extent, in driving the soil bacterial community in mixed-species plantations and its potential to improve soil fertility and to sustain Eucalyptus plantations established on the infertile and sandy soils of the Congolese coastal plains.

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