Changes in soil organic carbon fractions and microbial community under rice straw return in Northeast China

Shen, Yan; Song, Junming; Fan, Jinsheng; Yan, Chao; Dong, Shoukun; Ma, Chao; Gong, Zhenping

doi:10.1016/j.gecco.2020.e00962

Cited by 53 publications

(37 citation statements)

References 80 publications

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“…In the previous study, Steroidobacter was reported to be a complex organic compound degrading bacteria [42], whose abundance was the highest in MNP treatment, followed by M treatment, and then by NP treatment in this study. On the contrary, the abundance of RB41 was the highest in CK treatment, consistent with Yan who observed the highest relative abundance of RB41 in abandoned farmland compared to other treatments with fertilizer [43].…”

Section: Effects Of Treatments On the Bacterial Diversity And Community Compositionsupporting

confidence: 86%

Effects of Manure and Chemical Fertilizer on Bacterial Community Structure and Soil Enzyme Activities in North China

et al. 2021

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The application of organic fertilizer affects soil microbes and enzyme activities. In this study, we explored the effects of various long-term different fertilization treatments (manure, M; chemical fertilizer, NP; manure + chemical fertilizer, MNP; and no fertilizer, CK) on bacterial community structure and soil sucrase, urease, and alkaline phosphatase activities in Shaping, Hequ, China. High-throughput sequencing was used to amplify the third to the fourth hypervariable region of the 16S ribosomal RNA for analysis of the bacterial community structure. Enzyme activities were determined by colorimetry. Soil treated with MNP had the highest bacterial Abundance-based Coverage Estimator index and enzyme activities. The principal coordinates analysis results showed significant differences among the various fertilization treatments (p < 0.001). Proteobacteria, Actinobacteria, Acidobacteria, Gemmatimonadetes, and Chloroflexi were consistently dominant in all soil samples. The redundancy analysis and Monte Carlo permutation tests showed that the soil bacterial communities were significantly correlated with alkali-hydrolyzable nitrogen, organic matter, urease, and alkaline phosphatase. Our results reveal the fundamentally different effects that organic and inorganic fertilizers have on soil bacterial communities and their functions.

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Section: Effects Of Treatments On the Bacterial Diversity And Community Compositionsupporting

confidence: 86%

Effects of Manure and Chemical Fertilizer on Bacterial Community Structure and Soil Enzyme Activities in North China

et al. 2021

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“…The highest relative abundance of Chloroflexi in CT among the soil and water conservation measures may be attributed to a lower level of TN and SOC. Proteobacteria are more common in copiotrophic than in oligotrophic bacteria, widely distributed in plant litter and areas of root exudation, and play key roles in carbon cycles [ 33 , 34 ]. Due to higher N demands [ 35 ], copiotrophic taxa (including members of the Proteobacteria phyla) typically increased in relative abundance in the surface layer of BF, with oligotrophic taxa (mainly Chloroflexi ) exhibiting an opposite pattern.…”

Section: Discussionmentioning

confidence: 99%

Influence of Soil and Water Conservation Measures on Soil Microbial Communities in a Citrus Orchard of Southeast China

Wang

Devlin

et al. 2021

Microorganisms

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Soil microbes play a crucial role in ecosystem function. Here, the effects of soil and water conservation measures on soil microbial community structures, biodiversity, and co-occurrence networks are investigated and compared. We sampled soils at three different depths (0–10 cm, 10–20 cm and 20–40 cm) in a citrus orchard that uses long-term soil and water conservation measures, which includes Bermuda grass strip intercropping (BS), Bermuda grass full coverage (BF), Radish–soybean crop rotation strip intercropping (RS) and clear tillage orchards (CT). Results demonstrated that BS and BF yields a significant increase in bacterial richness and diversity of fungal in soils, while BF contains more beneficial microbial taxa, especially those with degrading and nutrient cycling capabilities. Microbial community structures differed significantly among the applied measures. In addition, co-occurrence networks under BS, BF and RS were more complex and robust than that of CT, and the stability of the network in BF was the highest. Microbial interactive stability and potential interactions in bacterial networks were stronger than those of fungi. The distribution of dominant phyla showed that Chloroflexi and Ascomycota dominated the different soil and water conservation measures. Proteobacteria and Ascomycota are revealed to be keystone species in bacterial networks and fungal networks, respectively, while Proteobacteria was the keystone species in microbial networks. Though the relative abundance of Chloroflexi turned out to have increased among the four measures, the relative abundance for Proteobacteria, Acidobacteria and Actinobacteria all decreased along the soil profile, with Acidobacteria under BS to be an exception. Soils under BS and BF had higher total nitrogen, microbial biomass carbon and organic carbon than CT and RS. Organic carbon(C) and total nitrogen(N) in soil were the major drivers of these bacterial community patterns, while there was no significant correlation between them and fungi. Overall, BF increases soil nutrients and microbial diversity, and also promotes ecological stability and interrelations among microbial taxa that collectively improve soil quality in the citrus orchard studied. Therefore, we recommended BF to be an ideal application for citrus orchards of southeast China.

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“…However, previous results have emerged, which reported that combined strains can reduce plants disease. [31,32] reported that T. harzianum when combined to another PGPM strain destroyed the external and internal hyphae continuity of Glomus intraradices, which resulted in regulation of P acquisition of mycorrhizal plants.…”

Section: Discussionmentioning

confidence: 99%

Influence of the Beneficial Microorganisms Bioformulations on the Soil Physicochemical Parameters and the Nutritional Profile of Abelmoschus Esculentus Cultivated in Cameroon

Alexis

Fotso

Martial

et al. 2021

JAERI

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Abelmoschus esculentus, a plant cultivated in tropical and temperate regions throughout the world, is highly appreciated for its various uses. Its culture encounters difficulties, particularly in Cameroon, due to soil infertility. In order to overcome this difficulty, the use of biological fertilizers in order to regenerate agricultural soils for more production is suggested. Three types of formulations were prepared after in vitro compatibilities tests, T1 (B. amyloliquefaciens and T. harzianum); T2 (B. velezensis and B. amyloliquefaciens) and T3 (B. velezensis and T. harzianum) with the aim of improving soil physicochemical; agromorphological and nutritional profile of okra. The plants were cultivated in 4.5 m² plots, arranged in complete randomized blocks design. ANOVA revealed significant differences between T1treatment and the other treatments and with the T0 control in plant height with the growth rate of 1.144cm/day, fruit length (11.53±0.49cm) and the average weight of fruits per treatment (1868.00±279.45g) at the significance level of P<0.05 (Tukey test). The productivity of treatment T1 per hectare (16.604±2.48t/ha) was highly significant compared to the other treatments and the control (8.53±1.49t/ha). Parameters such as disease resistance, leaf area and number of leaves were not significant between treatments but with the control. The values obtained with T1 treatment were high compared to the others. Regarding nutritional properties, the Na, K, Mg, Cu, Fe, Zn, carbohydrates and proteins contents were significantly increased compared to the control with contents values above the same okra variety. These different results may suggest the use of bioformulation with B. amyloliquefaciens and T. harzianum in order to improve soil fertility and to produce a sufficient quantity and quality of biofortified okra.

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Changes in soil organic carbon fractions and microbial community under rice straw return in Northeast China

Cited by 53 publications

References 80 publications

Effects of Manure and Chemical Fertilizer on Bacterial Community Structure and Soil Enzyme Activities in North China

Effects of Manure and Chemical Fertilizer on Bacterial Community Structure and Soil Enzyme Activities in North China

Influence of Soil and Water Conservation Measures on Soil Microbial Communities in a Citrus Orchard of Southeast China

Influence of the Beneficial Microorganisms Bioformulations on the Soil Physicochemical Parameters and the Nutritional Profile of Abelmoschus Esculentus Cultivated in Cameroon

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