TY - JOUR
T1 - Suppressed phosphorus-mineralizing bacteria after three decades of fertilization
AU - Zeng, Quanchao
AU - Mei, Tangyingze
AU - Delgado-Baquerizo, Manuel
AU - Wang, Mingxia
AU - Tan, Wenfeng
PY - 2022
Y1 - 2022
N2 - Phosphorus (P) mineralization from organic matter is one of the most important microbially-driven soil processes in natural ecosystems. However, little is known about how long-term fertilization affect the abundance, diversity and community composition of these important organisms in croplands wherein P is directly supply via fertilizers. Here, we investigated the fate of phosphorus-mineralizing bacteria in a citrus plantation chronosequence (5–30 years) including information on management practices (no covering, straw covering and peanut covering after 15 years). We found that the diversity and abundance of phoD-harboring bacteria and the activity of phosphatase was largely suppressed after 30 years of fertilization. Moreover, long-term fertilization altered the bacterial community associated with P mineralization, decreasing the relative abundance of Methylobacterium, Aquabacterium and Rhizobacter in comparison with adjacent natural forests. Remarkably, land management practices associated with land covering helped to increase the diversity of phoD-harboring bacteria, after 15 years of experiment. This result is likely associated with the entrance of organic matter to the system. Our results provide new evidence that long-term fertilization drastically suppressed the abundance and diversity of bacteria associated with P mineralization, with implications for soil health and sustainability.
AB - Phosphorus (P) mineralization from organic matter is one of the most important microbially-driven soil processes in natural ecosystems. However, little is known about how long-term fertilization affect the abundance, diversity and community composition of these important organisms in croplands wherein P is directly supply via fertilizers. Here, we investigated the fate of phosphorus-mineralizing bacteria in a citrus plantation chronosequence (5–30 years) including information on management practices (no covering, straw covering and peanut covering after 15 years). We found that the diversity and abundance of phoD-harboring bacteria and the activity of phosphatase was largely suppressed after 30 years of fertilization. Moreover, long-term fertilization altered the bacterial community associated with P mineralization, decreasing the relative abundance of Methylobacterium, Aquabacterium and Rhizobacter in comparison with adjacent natural forests. Remarkably, land management practices associated with land covering helped to increase the diversity of phoD-harboring bacteria, after 15 years of experiment. This result is likely associated with the entrance of organic matter to the system. Our results provide new evidence that long-term fertilization drastically suppressed the abundance and diversity of bacteria associated with P mineralization, with implications for soil health and sustainability.
UR - https://hdl.handle.net/1959.7/uws:75350
U2 - 10.1016/j.agee.2021.107679
DO - 10.1016/j.agee.2021.107679
M3 - Article
SN - 0167-8809
VL - 323
JO - Agriculture , Ecosystems and Environment
JF - Agriculture , Ecosystems and Environment
M1 - 107679
ER -