Browse

Shoot phytochrome B modulates reactive oxygen species homeostasis in roots via abscisic acid signaling in Arabidopsis

DC Field Value Language
dc.contributor.authorHa, Jun-Ho-
dc.contributor.authorKim, Ju-Heon-
dc.contributor.authorKim, Sang-Gyu-
dc.contributor.authorSim, Hee-Jung-
dc.contributor.authorLee, Gisuk-
dc.contributor.authorHalitschke, Rayko-
dc.contributor.authorBaldwin, Ian T.-
dc.contributor.authorKim, Jeong-Il-
dc.contributor.authorPark, Chung-Mo-
dc.date.accessioned2021-01-31T08:22:11Z-
dc.date.available2021-01-31T08:22:11Z-
dc.date.issued2018-06-
dc.identifier.citationPlant Journal, Vol.94 No.5, pp.790-798-
dc.identifier.issn0960-7412-
dc.identifier.other73112-
dc.identifier.urihttps://hdl.handle.net/10371/172048-
dc.description.abstractUnderground roots normally reside in darkness. However, they are often exposed to ambient light that penetrates through cracks in the soil layers which can occur due to wind, heavy rain or temperature extremes. In response to light exposure, roots produce reactive oxygen species (ROS) which promote root growth. It is known that ROS-induced growth promotion facilitates rapid escape of the roots from non-natural light. Meanwhile, long-term exposure of the roots to light elicits a ROS burst, which causes oxidative damage to cellular components, necessitating that cellular levels of ROS should be tightly regulated in the roots. Here we demonstrate that the red/far-red light photoreceptor phytochrome B (phyB) stimulates the biosynthesis of abscisic acid (ABA) in the shoots, and notably the shoot-derived ABA signals induce a peroxidase-mediated ROS detoxification reaction in the roots. Accordingly, while ROS accumulate in the roots of the phyb mutant that exhibits reduced primary root growth in the light, such an accumulation of ROS did not occur in the dark-grown phyb roots that exhibited normal growth. These observations indicate that mobile shoot-to-root ABA signaling links shoot phyB-mediated light perception with root ROS homeostasis to help roots adapt to unfavorable light exposure. We propose that ABA-mediated shoot-to-root phyB signaling contributes to the synchronization of shoot and root growth for optimal propagation and performance in plants.-
dc.subjectphytochrome-
dc.subjectABA signal-
dc.subjectshoot-to-root signaling-
dc.subjectlight signaling-
dc.subjectROS homeostasis-
dc.subjectArabidopsis-
dc.titleShoot phytochrome B modulates reactive oxygen species homeostasis in roots via abscisic acid signaling in Arabidopsis-
dc.typeArticle-
dc.contributor.AlternativeAuthor박충모-
dc.identifier.doi10.1111/tpj.13902-
dc.citation.journaltitlePlant Journal-
dc.identifier.scopusid2-s2.0-85045756106-
dc.citation.endpage798-
dc.citation.number5-
dc.citation.startpage790-
dc.citation.volume94-
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/full/10.1111/tpj.13902-
dc.identifier.rimsid73112-
dc.identifier.sci000434179400005-
dc.description.isOpenAccessY-
dc.contributor.affiliatedAuthorPark, Chung-Mo-
Appears in Collections:
College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
Files in This Item:
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse