ID 57527
FullText URL
Author
Ooi , Lia Institute of Plant Science and Resources, Okayama University ORCID
Matsuura, Takakazu Institute of Plant Science and Resources, Okayama University
Munemasa, Shintaro Graduate School of Environmental and Life Science, Okayama University
Murata, Yoshiyuki Graduate School of Environmental and Life Science, Okayama University Kakenhi
Katsuhara, Maki Institute of Plant Science and Resources, Okayama University ORCID Kakenhi
Hirayama, Takashi Institute of Plant Science and Resources, Okayama University ORCID Kakenhi publons
Mori, Izumi C. Institute of Plant Science and Resources, Okayama University ORCID Kakenhi
Abstract
Plants closing stomata in the presence of harmful gases is believed to be a stress avoidance mechanism. SO2 , one of the major airborne pollutants, has long been reported to induce stomatal closure, yet the mechanism remains unknown. Little is known about the stomatal response to airborne pollutants besides O3 . SLOW ANION CHANNEL-ASSOCIATED 1 (SLAC1) and OPEN STOMATA 1 (OST1) were identified as genes mediating O3 -induced closure. SLAC1 and OST1 are also known to mediate stomatal closure in response to CO2 , together with RESPIRATORY BURST OXIDASE HOMOLOGs (RBOHs). The overlaying roles of these genes in response to O3 and CO2 suggested that plants share their molecular regulators for airborne stimuli. Here, we investigated and compared stomatal closure event induced by a wide concentration range of SO2 in Arabidopsis through molecular genetic approaches. O3 - and CO2 -insensitive stomata mutants did not show significant differences from the wild type in stomatal sensitivity, guard cell viability, and chlorophyll content revealing that SO2 -induced closure is not regulated by the same molecular mechanisms as for O3 and CO2 . Nonapoptotic cell death is shown as the reason for SO2 -induced closure, which proposed the closure as a physicochemical process resulted from SO2 distress, instead of a biological protection mechanism.
Keywords
airborne pollutants
nonapoptotic cell death
stomatal closure
sulfur dioxide
Published Date
2018-07-16
Publication Title
Plant, Cell and Environment
Volume
volume42
Issue
issue2
Publisher
Wiley
Start Page
437
End Page
447
ISSN
0140-7791
NCID
AA0036238X
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
File Version
author
PubMed ID
DOI
Web of Sience KeyUT
Related Url
isVersionOf https://doi.org/10.1111/pce.13406
Funder Name
Japan Society for the Promotion of Science
助成番号
24114709