The Fast and Transient Transcriptional Network of Gravity and Mechanical Stimulation in the Arabidopsis Root Apex  

dc.contributor.author

Kimbrough, Jeffery M

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Salinas-Mondragon, Raul

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Boss, Wendy F

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Brown, Christopher S

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Sederoff, Heike Winter

dc.date.accessioned

2022-03-28T19:18:14Z

dc.date.available

2022-03-28T19:18:14Z

dc.date.issued

2004-09-01

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2022-03-28T19:18:14Z

dc.description.abstract

<jats:title>Abstract</jats:title> <jats:p>Plant root growth is affected by both gravity and mechanical stimulation (Massa GD, Gilroy S [2003] Plant J 33: 435–445). A coordinated response to both stimuli requires specific and common elements. To delineate the transcriptional response mechanisms, we carried out whole-genome microarray analysis of Arabidopsis root apices after gravity stimulation (reorientation) and mechanical stimulation and monitored transcript levels of 22,744 genes in a time course during the first hour after either stimulus. Rapid, transient changes in the relative abundance of specific transcripts occurred in response to gravity or mechanical stimulation, and these transcript level changes reveal clusters of coordinated events. Transcriptional regulation occurs in the root apices within less than 2 min after either stimulus. We identified genes responding specifically to each stimulus as well as transcripts regulated in both signal transduction pathways. Several unknown genes were specifically induced only during gravitropic stimulation (gravity induced genes). We also analyzed the network of transcriptional regulation during the early stages of gravitropism and mechanical stimulation.</jats:p>

dc.identifier.issn

0032-0889

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1532-2548

dc.identifier.uri

https://hdl.handle.net/10161/24730

dc.language

en

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Oxford University Press (OUP)

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Plant Physiology

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10.1104/pp.104.044594

dc.title

The Fast and Transient Transcriptional Network of Gravity and Mechanical Stimulation in the Arabidopsis Root Apex

dc.type

Journal article

duke.contributor.orcid

Salinas-Mondragon, Raul|0000-0001-9011-683X

pubs.begin-page

2790

pubs.end-page

2805

pubs.issue

1

pubs.organisational-group

Duke

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School of Medicine

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Staff

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Basic Science Departments

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Biochemistry

pubs.publication-status

Published

pubs.volume

136

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