Effect of protists on rhizobacterial community composition and rice plant growth in a biochar amended soil

Asiloglu R., Sevilir B., Samuel S. O., Aycan M., AKÇA M. O., Suzuki K., ...Daha Fazla

BIOLOGY AND FERTILITY OF SOILS, cilt.57, sa.2, ss.293-304, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1007/s00374-020-01525-1
  • Dergi Adı: BIOLOGY AND FERTILITY OF SOILS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Geobase, Pollution Abstracts, Veterinary Science Database
  • Sayfa Sayıları: ss.293-304
  • Anahtar Kelimeler: Biochar, N-cycling bacteria, Phagotrophic protists, Rice rhizosphere, Trophic interactions, BACTERIAL COMMUNITY, ACANTHAMOEBA-CASTELLANII, PROTOZOAN POPULATIONS, AGRICULTURAL SOIL, NITROGEN-FIXATION, PREY DIVERSITY, TOP-DOWN, FOOD, MINERALIZATION, RESPONSES
  • Ankara Üniversitesi Adresli: Evet

Özet

The effects of protists on an indigenous soil bacterial community, putative bacterial genes involved in N-cycling, and the rice plant growth were studied in poultry litter biochar (PL) and rice husk biochar (RH) amended (with two application doses: 2% and 4% w/w) paddy field soil. The bacterial community composition, which was evaluated using 16S rRNA gene amplicon sequencing, was significantly and differentially affected by the protists, the PL and the RH. The effects of protists on the bacterial community composition were decreased by the RH and the PL treatments. The number of protist-affected bioindicator bacterial taxa was decreased from 90 to 46, 29, 43, and 21 in the 2% RH-, 4% RH-, 2% PL-, and 4% PL-treated soils, respectively. The presence of the protist significantly increased the abundance of the putative bacterial genes involved in mineralisation, dissimilatory nitrate reduction to ammonium (DNRA), and NO3- assimilation, and the same occurred with PL treatments. The rice plant growth and N uptake were always higher in the presence of protists and PL amendments. Overall our results suggest a new insight into the effects of biochar on the bacterial community via altering the trophic interactions.