Mycorrhiza stimulates Rhizobium infection in Paraserianthes falcataria (L.) I.C. Nielson under Hg contamination

Irma Latifah (Brawijaya University)
Idris Idris (Research Center for Biology, Indonesian Institute of Science, Indonesia)
Toga Pangihotan Napitupulu (Research Center for Biology, Indonesian Institute of Science, Indonesia)
Azra Zahra Nadirah Ikhwani (Research Center for Biology, Indonesian Institute of Science, Indonesia)
Gunawan Ruhiyat (Research Center for Biology, Indonesian Institute of Science, Indonesia)
I Nyoman Sumerta (Research Center for Biology, Indonesian Institute of Science, Indonesia)
Atit Kanti (Research Center for Biology, Indonesian Institute of Science, Indonesia)
Fitri Yola Amandita (Research and Development Center for Environmental Quality and Laboratory (P3KLL), PUSPIPTEK Building 210, South Tangerang, Banten, Indonesia)
I Made Sudiana (Research Center for Biology, Indonesian Institute of Science, Indonesia)

Journal of Microbial Systematics and Biotechnology
Vol 3, No 1 (2021): August 2021

Symbiosis of and AMF increase soybean production, but the information on the association between these microbes in Paraserianthes falcataria (L.) I.C. Nielson or ‘sengon’ under Hg contamination is limited. We observed P. falcataria inoculated with arbuscular mycorrhiza fungi (Glomus sp.) stimulate nodule formation under Hg contamination. The study was set up in a pot experiment in the growth chamber a the Hg concentration was adjusted to 50 ppm in soil medium. Inoculation of AMF stimulates nodule formation and increases P. falcataria tolerance to Hg. We isolated several bacteria from the rhizosphere belonging to Rhizobium group and others. Understanding the ecology of soil bacteria is important for Hg bioremediation using P. falcataria.