About Textpresso Categories/Ontology Copyright Downloads Feedback Home Query Language Search User Guide
Enter keyword(s) and/or category/ies. Selecting categories for a query makes a search more specific. For example, you can retrieve sentences that contain the word HSN and a Oryza sativa gene name by typing the keyword 'SPW1' and choosing the category 'gene (Oryza sativa)'. A category hit occurs when a particular word or phrase in the sentence is defined as a member of a particular category. Categories will be concatenated by a Boolean 'and' operation to other categories and keyword(s) if present. To search for terms in categories, click on the Categories/Ontology link above.
Keywords
Separate multiple, required keywords by white spaces (Boolean 'and').
Separate multiple, alternative keywords by a comma with no white spaces (Boolean 'or').
Enter phrases in double quotes, and put a '-' sign in front of words which are to be excluded.
Keyword Specification
AND/OR
Categories
Fields
Search Scope
Search Mode
Sort by
 
Narrow your search results with filter:
Put a '+' sign in front of words which have to be included, a '-' sign in front of words which have to be excluded. Enter the field of the word, viz author, title, year, journal, abstract, type or sentence in square brackets. Enter phrases in double quotes.
For example, to find all the papers in the search result that have Jack as author, but not John, enter +Jack-John[author]. To exclude all papers that have the phrase double mutant in title, enter -"double mutant"[title]. You can combine several filters and enter something like +Jack-John[author] -"double mutant"[title] +1994[year] -review[type].
Click on Filter! button to activate the filter.

Goto:
of 1
Display options:
author: on | off accession: on | off type: on | off abstract: on | off title: on | off
citation: on | off journal: on | off year: on | off supplementals: on | off textlinks: on | off
searchterm-highlighting: on | off matching sentences: none 1 5 10 entries/page: 5 10 20 50
6 matches found in 2 documents. Search time: 0.091 seconds.
Global links/files: all results in endnote all results in print version
Score: 6.00
Title: Isolation and characterization of a rice WUSCHEL-type homeobox gene that is specifically expressed in the central cells of a quiescent center in the root apical meristem .
Author: Kamiya N Nagasaki H Morikami A Sato Y Matsuoka M
Journal: Plant J Citation: V : 35 ( 4 ) P : 429-41 Year: 2003 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub12904206 Accession (PMID): 12904206
Abstract: The Arabidopsis WUSCHEL ( WUS ) protein , which plays an important role in the specification of the stem cells in the shoot apical meristem ( SAM ) , contains an atypical homeodomain ( HD ) with extra residues in its loop and turn regions . We speculated that a WUS-type atypical HD protein might also be involved in the specification and maintenance of the root apical meristem ( RAM ) stem cells of rice . To investigate this possibility , we isolated and characterized a rice WUS-type homeobox gene designated quiescent-center-specific homeobox ( QHB ) gene . Using transformants carrying the QHB promoter-GUS and in situ hybridization , we found that QHB was specifically expressed in the central cells of a quiescent center ( QC ) of the root . During embryogenesis and crown root formation , QHB expression was observed prior to the morphological differentiation of the root . However , we detected different QHB expression patterns in the process of the RAM development , specifically between radicle and crown root formation , suggesting that the cell-fate determination of the QC may be controlled by different mechanisms . We also produced transformants that overexpress QHB or Arabidopsis WUS . These transformants did not form crown roots , but developed multiple shoots from ectopic SAMs with malformed leaves . On the basis of these observations , we propose that the WUS-type homeobox gene is involved in the specification and maintenance of the stem cells ( QC cells ) in the RAM , by a mechanism similar to that for WUS in the SAM .
Matching Sentences:
[ Sen. 4, subscore: 2.00 ]: Using transformants carrying the QHB promoter-GUS and in situ hybridization , we found that QHB was specifically expressed in the central cells of a quiescent center ( QC ) of the root .
[ Sen. 3, subscore: 1.00 ]: To investigate this possibility , we isolated and characterized a rice WUS-type homeobox gene designated quiescent-center-specific homeobox ( QHB ) gene .
[ Sen. 5, subscore: 1.00 ]: During embryogenesis and crown root formation , QHB expression was observed prior to the morphological differentiation of the root .
[ Sen. 6, subscore: 1.00 ]: However , we detected different QHB expression patterns in the process of the RAM development , specifically between radicle and crown root formation , suggesting that the cell-fate determination of the QC may be controlled by different mechanisms .
[ Sen. 7, subscore: 1.00 ]: We also produced transformants that overexpress QHB or Arabidopsis WUS .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: OsIAA23-mediated auxin signaling defines postembryonic maintenance of QC in rice .
Author: Jun N Gaohang W Zhenxing Z Huanhuan Z Yunrong W Ping W
Journal: Plant J Citation: V : 68 P : 433-42 Year: 2011 Type: In-Process
Literature: oryza Field: abstract Doc ID: pub21736653 Accession (PMID): 21736653
Abstract: Although the quiescent center ( QC ) is crucial to root development , the molecular mechanisms that regulate its postembryonic maintenance remain obscure . In this study , a semi-dominant mutant that exhibits pleiotropic defects in root it issues , which includes the root cap , lateral and crown roots , was isolated . The mutant is characterized by a loss of QC identity during postembryonic development , and the displayed defects result from a stabilizing mutation in domain II of OsIAA23 ( Os06g39590 ) . Expression of OsIAA23 is specific to the QC of the root tip during the development of primary , lateral and crown roots . Consistent with OsIAA23 expression in the QC , the auxin signaling marked by DR5p : : GUS ( ss-glucuronidase ) was absent in the QC region of Osiaa23 . Transgenic rice plants harboring Osiaa23 under the control of the QHB promoter mimic partially the defects of Osiaa23 . These results indicate that the maintenance of the QC is dependent on OsIAA23-mediated auxin signaling in the QC . These findings provide insight into Aux/IAA-based auxin signaling during postembryonic maintenance of the QC in plants .
Matching Sentences:
[ Sen. 6, subscore: 1.00 ]: Transgenic rice plants harboring Osiaa23 under the control of the QHB promoter mimic partially the defects of Osiaa23 .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Goto:

© Textpresso Fri Mar 29 06:28:17 2024 .