Genetic interaction of two abscisic acid signaling regulators, HY5 and FIERY1, in mediating lateral root formation

Handle URI:
http://hdl.handle.net/10754/561699
Title:
Genetic interaction of two abscisic acid signaling regulators, HY5 and FIERY1, in mediating lateral root formation
Authors:
Chen, Hao; Xiong, Liming ( 0000-0001-8099-0806 )
Abstract:
Root architecture is continuously shaped in a manner that helps plants to better adapt to the environment. Gene regulation at the transcriptional or post-transcriptional levels largely controls this environmental response. Recently, RNA silencing has emerged as an important player in gene regulation and is involved in many aspects of plant development, including lateral root formation. In a recent study, we found that FIERY1, a bifunctional abiotic stress and abscisic acid (ABA) signaling regulator and an endogenous RNA silencing suppressor, mediates auxin response during lateral root formation in Arabidopsis. We proposed that FRY1 regulates lateral root development through its activity on adenosine 3,5-bisphosphate (PAP), a strong inhibitor of exoribonucleases (XRNs). Interestingly, some of the phenotypes of fry1, such as enhanced response to light in repressing hypocotyl elongation and hypersensitivity to ABA in lateral root growth, are opposite to those of another light- and ABA-signaling mutant, hy5. Here we analyzed the hy5 fry1 double mutant for root and hypocotyl growth. We found that the hy5 mutation can suppress the enhanced light sensitivity in fry1 hypocotyl elongation and restore the lateral root formation. The genetic interaction between HY5 and FRY1 indicates that HY5 and FRY1 may act in overlapping pathways that mediate light signaling and lateral root development. © 2011 Landes Bioscience.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Center for Desert Agriculture; Bioscience Program; Plant Stress Genomics Research Lab
Publisher:
Taylor & Francis
Journal:
Plant Signaling and Behavior
Issue Date:
1-Jan-2011
DOI:
10.4161/psb.6.1.14231
PubMed ID:
21301222
Type:
Article
ISSN:
15592316
Appears in Collections:
Articles; Bioscience Program; Center for Desert Agriculture; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, Haoen
dc.contributor.authorXiong, Limingen
dc.date.accessioned2015-08-03T09:02:35Zen
dc.date.available2015-08-03T09:02:35Zen
dc.date.issued2011-01-01en
dc.identifier.issn15592316en
dc.identifier.pmid21301222en
dc.identifier.doi10.4161/psb.6.1.14231en
dc.identifier.urihttp://hdl.handle.net/10754/561699en
dc.description.abstractRoot architecture is continuously shaped in a manner that helps plants to better adapt to the environment. Gene regulation at the transcriptional or post-transcriptional levels largely controls this environmental response. Recently, RNA silencing has emerged as an important player in gene regulation and is involved in many aspects of plant development, including lateral root formation. In a recent study, we found that FIERY1, a bifunctional abiotic stress and abscisic acid (ABA) signaling regulator and an endogenous RNA silencing suppressor, mediates auxin response during lateral root formation in Arabidopsis. We proposed that FRY1 regulates lateral root development through its activity on adenosine 3,5-bisphosphate (PAP), a strong inhibitor of exoribonucleases (XRNs). Interestingly, some of the phenotypes of fry1, such as enhanced response to light in repressing hypocotyl elongation and hypersensitivity to ABA in lateral root growth, are opposite to those of another light- and ABA-signaling mutant, hy5. Here we analyzed the hy5 fry1 double mutant for root and hypocotyl growth. We found that the hy5 mutation can suppress the enhanced light sensitivity in fry1 hypocotyl elongation and restore the lateral root formation. The genetic interaction between HY5 and FRY1 indicates that HY5 and FRY1 may act in overlapping pathways that mediate light signaling and lateral root development. © 2011 Landes Bioscience.en
dc.publisherTaylor & Francisen
dc.subjectHypocotylen
dc.subjectLateral rooten
dc.subjectLight signalingen
dc.subjectPAPen
dc.subjectRNA silencingen
dc.subjectXRN4en
dc.titleGenetic interaction of two abscisic acid signaling regulators, HY5 and FIERY1, in mediating lateral root formationen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentCenter for Desert Agricultureen
dc.contributor.departmentBioscience Programen
dc.contributor.departmentPlant Stress Genomics Research Laben
dc.identifier.journalPlant Signaling and Behavioren
dc.contributor.institutionDonald Danforth Plant Science Center, St. Louis, MO, United Statesen
kaust.authorXiong, Limingen

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