Linked Life Data

19076296

Source:http://linkedlifedata.com/resource/pubmed/id/19076296

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2011-4-1
pubmed:abstractText
Phytosulfokine-? (PSK-?) is a disulfated pentapeptide described to act as a growth factor in suspension cells. In this study, the involvement of PSK signaling through the PSK receptor gene AtPSKR1 in Arabidopsis root growth was assessed.Expression studies of PSK precursor genes and of AtPSKR1 were performed in roots with RT-PCR and P:GUS analyses. Root elongation, lateral root formation, cell production and root cell elongation were analyzed in wild-type (wt) and in the receptor knockout mutant Atpskr1-T treated with or without synthetic PSK-?.Phytosulfokine and AtPSKR1 genes are differentially expressed in roots. PSK-? induced root growth in a dose-dependent manner without affecting lateral root density. Kinematic analysis established that enhancement of root growth by PSK-? was mainly caused by an increase in cell size. In Atpskr1-T, the primary roots were shorter as a result of reduced mature cell size and a smaller root apical meristem composed of fewer cells than in wt.The results indicate that PSK-? signaling through AtPSKR1 affects root elongation primarily via control of mature cell size. Root organogenesis, on the other hand,is not controlled by PSK-?.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
1469-8137
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
181
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
820-31
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
PSK-? promotes root growth in Arabidopsis.
pubmed:affiliation
Botanisches Institut, Universität Kiel, Am Botanischen Garten 1-9, 24118 Kiel, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't