AUTHOR=Yu Hui , Wang Fenghua , Shao Minmin , Huang Ling , Xie Yangyang , Xu Yuxin , Kong Lingrang 

TITLE=Effects of Rotations With Legume on Soil Functional Microbial Communities Involved in Phosphorus Transformation

JOURNAL=Frontiers in Microbiology

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2021.661100

DOI=10.3389/fmicb.2021.661100

ISSN=1664-302X

ABSTRACT=<p>Including legumes in the cereal cropping could improve the crop yield and the uptake of nitrogen (N) and phosphorus (P) of subsequent cereals. The effects of legume-cereal crop rotations on the soil microbial community have been studied in recent years, the impact on soil functional genes especially involved in P cycling is raising great concerns. The metagenomic approach was used to investigate the impacts of crop rotation managements of soybean-wheat (SW) and maize-wheat (MW) lasting 2 and 7years on soil microbial communities and genes involved in P transformation in a field experiment. Results indicated that SW rotation increased the relative abundances of <italic>Firmicutes</italic> and <italic>Bacteroidetes</italic>, reduced <italic>Actinobacteria</italic>, <italic>Verrucomicrobia</italic>, and <italic>Chloroflexi</italic> compared to MW rotation. <italic>gcd</italic>, <italic>phoR</italic>, <italic>phoD</italic>, and <italic>ppx</italic> predominated in genes involved in P transformation in both rotations. Genes of <italic>gcd</italic>, <italic>ppa</italic>, and <italic>ugpABCE</italic> showed higher abundances in SW rotation than in MW rotation, whereas <italic>gadAC</italic> and <italic>pstS</italic> showed less abundances. <italic>Proteobacteria</italic>, <italic>Acidobacteria</italic>, and <italic>Gemmatimonadetes</italic> played predominant roles in microbial P cycling. Our study provides a novel insight into crop P, which requires strategy and help to understand the mechanism of improving crop nutrient uptake and productivity in different rotations.</p>