Hirokuni Miyamoto, Katsumi Shigeta, Wataru Suda, Yasunori Ichihashi, Naoto Nihei, Makiko Matsuura, Arisa Tsuboi, Naoki Tominaga, Masahiko Aono, Muneo Sato, Shunya Taguchi, Teruno Nakaguma, Naoko Tsuji, Chitose Ishii, Teruo Matsushita, Chie Shindo, Toshiaki Ito, Tamotsu Kato, Hiroshi Ohno, Atsushi Kurotani, Hideaki Shima, Shigeharu Moriya, Sankichi Horiuchi, Kenichi Mori, Hisashi Miyamoto, Masahira Hattori, Hiroaki Kodama, Jun Kikuchi, Yumi Hirai
2022年2月7日
Compost is used worldwide as a soil conditioner for crops, but its functions
remain unclear. Here, the omics profiles of carrots and soil amended with
compost fermented by thermophilic Bacillaceae, as a compost model, are
classified based on information on carrots' growth, color, and taste
characteristics. The production of carrots and their antioxidant activity were
significantly increased by compost exposure, as was their content of carotenes,
essential carrot nutrients. Furthermore, omics profiles revealed that carrots'
growth, red color, and taste could be increased by altering characteristic
leaf, root, and soil metabolites by compost exposure. In particular, structural
equation modeling statistically predicted a strong association with
nitrogen-cycle related-soil bacteria candidates, which could modulate nitrogen
fixation and anaerobic ammonium oxidation (anammox), affected by compost. These
observations statistically provide a novel perspective on potential sustainable
compost as an organic fertilizer that has the role of preserving the
environment.