Oxygen and hydrogen peroxide enhance light-induced carotenoid synthesis in Neurospora crassa.
Previously, we found that intracellular reactive oxygen species (ROS) affect photomorphogenesis in Neurospora crassa. In this study, we investigated the physiological roles of ROS in the response to light and found that the exposure of mycelia to air was important for the light-induced carotenogenesis. Mycelia treated with a high concentration of O(2) gas and H(2)O(2) to release ROS showed an enhancement of light-induced carotenoid accumulation and the expression of gene related to light-inducible carotenogenesis. These results suggested that stimuli caused by the exposure of the mycelia to air containing O(2) gas triggered the light-induced carotenoid synthesis.
Iigusa
Hideo
H
Kihara Institute for Biological Research, Graduate school of Integrated Science, Yokohama City University, 641-12 Maioka-cho, Totsuka-ku, Yokohama 244-0813, Japan.
Yoshida
Yusuke
Y
Hasunuma
Kohji
K
D000388:Air; D015152:Blotting, Northern; D002338:Carotenoids / Q000378:metabolism*; D005740:Gases; D015966:Gene Expression Regulation, Fungal; D006861:Hydrogen Peroxide / Q000378:metabolism* / Q000494:pharmacology; D008027:Light; D009492:Neurospora crassa / Q000378:metabolism / Q000502:physiology*; D009584:Nitrogen / Q000378:metabolism; D010100:Oxygen / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D017382:Reactive Oxygen Species; D013997:Time Factors
D005740:Gases; D012333:RNA, Messenger; D017382:Reactive Oxygen Species; D002338:Carotenoids; D006861:Hydrogen Peroxide; D009584:Nitrogen; D010100:Oxygen