Effects of monoculture regime on the soil nirK- and nosZ-denitrifying bacterial communities of Casuarina equisetifolia

Solving the problem of high concentration aniline inhibiting nitrogen removal: starting the SBBR with the prolonged aeration mode

“…Analysis of denitrifying bacteria found that the abundance of Bosea (S0:0.32%, S1A:1.20%), 46 Flavobacterium (S0:0.36%, S1A:1.55%) 47 and Paracoccus (S0:1.92%, S1A:2.61%) 48 increased. Both Flavobacterium 49 and Paracoccus 48 had been reported to adapt to aerobic environments.…”

“…As can be seen, the prolonged aeration mode was conducive to the nitrification of sludge, which was consistent with the result of high NH 4 + -N removal efficiency shown in section 3.1. Analysis of denitrifying bacteria found that the abundance of Bosea (S0:0.32%, S1A:1.20%), 46 Flavobacterium (S0:0.36%, S1A:1.55%) 47 and Paracoccus (S0:1.92%, S1A:2.61%) 48 increased. Both Flavobacterium 49 and Paracoccus 48 had been reported to adapt to aerobic environments.…”

Effects of continuous monoculture on rhizosphere soil nutrients, growth, physiological characteristics, hormone metabolome of Casuarina equisetifolia and their interaction analysis

“…These studies have shown that there was an increase in the number of pathogenic microorganisms in rhizosphere soil, and a concurrent decrease in the number of probiotic bacteria. Furthermore, continuous planting results in a reduction in the number of microorganisms involved in the nutrient cycle of C. equisetifolia in rhizosphere soil, a decrease in the expression levels of relevant genes, and a decline in soil available nutrients, ultimately leading to reduced nutrient absorption and accumulation in C. equisetifolia [ [9] , [10] , [11] ].…”

Effect of continuous planting on Casuarina equisetifolia rhizosphere soil physicochemical indexes, microbial functional diversity and metabolites

“…Previous studies, using high-throughput sequencing, analysed the effect of continuous planting on the microbial diversity of C. equisetifolia rhizosphere soil and found a significant decrement in the microbial population, especially probiotics, and diversity after continuous planting, whereas the pathogenic bacteria significantly increased, and the nutrient cycling capacity of the soil was impeded ( Zhou et al., 2019 ). The microbial diversity and gene expression related to nitrogen cycling in the soil were further analysed, showing a reduction in the nitrogen cycling capacity and a decrease in the available nitrogen content in the soil subject to C. equisetifolia recurrent monoculture ( Zhou et al., 2021 ; Zhou et al., 2022 ). This series of studies found that continuous planting leads to a reduction in the nutrient cycling capacity of the soil from a soil microbial perspective.…”