Raising root zone temperature improves plant productivity and metabolites in hydroponic lettuce production oleh Sota Hayashi, Christopher P. Levine, Wakabayashi Yu, Mayumi Usui, Atsuyuki Yukawa, Yoshihiro Ohmori, Miyako Kusano, Miyako Kusano, Miyako Kusano, Makoto Kobayashi, Tomoko Nishizawa, Ikusaburo Kurimoto, Saneyuki Kawabata, Wataru Yamori