Arabidopsis Monothiol Glutaredoxin, AtGRXS17, Is Critical for Temperature-dependent Postembryonic Growth and Development via Modulating Auxin Response

dc.contributor.author Cheng, Ning-Hui
dc.contributor.author Liu, Jian-Zhong
dc.contributor.author Liu, Xing
dc.contributor.author Wu, Qingyu
dc.contributor.author Thompson, Sean
dc.contributor.author Lin, Julie
dc.contributor.author Chang, Joyce
dc.contributor.author Whitham, Steven
dc.contributor.author Park, Sunghun
dc.contributor.author Cohen, Jerry
dc.contributor.author Hirschi, Kendal
dc.contributor.department Plant Pathology and Microbiology
dc.date 2018-02-17T13:15:11.000
dc.date.accessioned 2020-06-30T06:23:56Z
dc.date.available 2020-06-30T06:23:56Z
dc.date.issued 2011-01-01
dc.description.abstract <p>Global environmental temperature changes threaten innumerable plant species. Although various signaling networks regulate plant responses to temperature fluctuations, the mechanisms unifying these diverse processes are largely unknown. Here, we demonstrate that an <em>Arabidopsis</em> monothiol glutaredoxin, AtGRXS17 (At4g04950), plays a critical role in redox homeostasis and hormone perception to mediate temperature-dependent postembryonic growth. <em>AtGRXS17</em> expression was induced by elevated temperatures. Lines altered in <em>AtGRXS17</em> expression were hypersensitive to elevated temperatures and phenocopied mutants altered in the perception of the phytohormone auxin. We show that auxin sensitivity and polar auxin transport were perturbed in these mutants, whereas auxin biosynthesis was not altered. In addition, <em>atgrxs17</em> plants displayed phenotypes consistent with defects in proliferation and/or cell cycle control while accumulating higher levels of reactive oxygen species and cellular membrane damage under high temperature. Together, our findings provide a nexus between reactive oxygen species homeostasis, auxin signaling, and temperature responses.</p>
dc.description.comments <p>This article is from <em>Journal of Biological Chemistry </em>286 (2011): 20398, <a href="http://dx.doi.org/10.1074/jbc.M110.201707" target="_blank">doi:10.1074/jbc.M110.201707</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/plantpath_pubs/84/
dc.identifier.articleid 1080
dc.identifier.contextkey 8154076
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath plantpath_pubs/84
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/57800
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/plantpath_pubs/84/2011_Whitham_ArabidopsisMonothiol.pdf|||Sat Jan 15 02:10:54 UTC 2022
dc.source.uri 10.1074/jbc.M110.201707
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.subject.disciplines Plant Pathology
dc.subject.keywords Arabidopsis
dc.subject.keywords electron transport
dc.subject.keywords oxidative stress
dc.subject.keywords plant
dc.subject.keywords reactive oxygen species (ROS)
dc.subject.keywords Auxin response
dc.subject.keywords Monothiol Glutaredoxin
dc.subject.keywords Temperature stress
dc.title Arabidopsis Monothiol Glutaredoxin, AtGRXS17, Is Critical for Temperature-dependent Postembryonic Growth and Development via Modulating Auxin Response
dc.type article
dc.type.genre article
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relation.isOrgUnitOfPublication a26b5928-54bb-4a0b-a973-95d649d1ad83
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