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
3 matches found in 2 documents. Search time: 0.015 seconds.
Global links/files: all results in endnote all results in print version
Score: 2.00
Title: Initiation of shoot apical meristem in rice : characterization of four SHOOTLESS genes .
Author: Satoh N Hong SK Nishimura A Matsuoka M Kitano H Nagato Y
Journal: Development Citation: V : 126 ( 16 ) P : 3629-36 Year: 1999 Type: ARTICLE
Literature: oryza Field: abstract Doc ID: pub10409508 Accession (PMID): 10409508
Abstract: The regulatory mechanism of shoot apical meristem ( SAM ) initiation is an important subject in developmental plant biology . We characterized nine recessive mutations derived from four independent loci ( SHL1-SHL4 ) causing the deletion of the SAM . Radicles were produced in these mutant embryos . Concomitant with the loss of SAM , two embryo-specific organs , coleoptile and epiblast , were lost , but the scutellum was formed normally . Therefore , differentiation of radicle and scutellum is regulated independently of SAM , but that of coleoptile and epiblast may depend on SAM . Regeneration experiments using adventitious shoots from the scutellum-derived calli showed that no adventitious shoots were regenerated in any shl mutant . However , small adventitious leaves were observed in both mutant and wild-type calli , but they soon became necrotic and showed no extensive growth . Thus , leaf primordia can initiate in the absence of SAM , but their extensive growth requires the SAM . An in situ hybridization experiment using a rice homeobox gene , OSH1 , as a probe revealed that shl1 and shl2 modified the expression domain of OSH1 , but normal expression of OSH1 was observed in shl3 and shl4 embryos . Accordingly , SHL1 and SHL2 function upstream of OSH1 , and SHL3 and SHL4 downstream or independently of OSH1 . These shl mutants are useful for elucidating the genetic program driving SAM initiation and for unraveling the interrelationships among various organs in grass embryos .
Matching Sentences:
[ Sen. 9, subscore: 1.00 ]: An in situ hybridization experiment using a rice homeobox gene , OSH1 , as a probe revealed that shl1 and shl2 modified the expression domain of OSH1 , but normal expression of OSH1 was observed in shl3 and shl4 embryos .
[ Sen. 10, subscore: 1.00 ]: Accordingly , SHL1 and SHL2 function upstream of OSH1 , and SHL3 and SHL4 downstream or independently of OSH1 .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Score: 1.00
Title: The small interfering RNA production pathway is required for shoot meristem initiation in rice .
Author: Nagasaki H Itoh J Hayashi K Hibara K Satoh-Nagasawa N Nosaka M Mukouhata M Ashikari M Kitano H Matsuoka M Nagato Y Sato Y
Journal: Proc Natl Acad Sci U S A Citation: V : 104 P : 14867-71 Year: 2007 Type: MEDLINE
Literature: oryza Field: abstract Doc ID: pub17804793 Accession (PMID): 17804793
Abstract: The shoot apical meristem ( SAM ) is a group of stem cells that are responsible for plant development . Mutations in rice SHOOTLESS2 ( SHL2 ) , SHL4/SHOOT ORGANIZATION2 ( SHO2 ) , and SHO1 cause complete deletion or abnormal formation of the SAM . In this study we showed that defects in SAM formation in shl mutants are associated with the loss of expression of the homeodomain-leucine zipper ( HD-ZIPIII ) family genes . Rice SHL2 , SHL4/SHO2 , and SHO1 encoded orthologues of Arabidopsis RNA-dependent RNA polymerase 6 , ARGONAUTE ( AGO ) 7 , and DICER-like 4 , respectively , whose mutations affect leaf development through the trans-acting siRNA ( ta-siRNA ) pathway . This suggested that the ta-siRNA pathway regulates the critical step of SAM formation during rice embryogenesis . The gain-of-function experiment by the ectopic expression of SHL4 resulted in reduced accumulation of an microRNA , miR166 , and partial adaxialization of leaves , supporting a role for the ta-siRNA pathway in the maintenance of leaf polarity as previously reported in maize . Analysis of the spatiotemporal expression patterns of HD-ZIPIII and miR166 in wild-type and shl mutant embryos suggested that the loss of HD-ZIPIII expression in the SAM region of the developing embryo is the result of ectopic expression of miR166 . Our analysis of shl mutants demonstrated that HD-ZIPIII expression regulated by miR166 is sensitive to the ta-siRNA pathway during SAM formation in rice embryogenesis .
Matching Sentences:
[ Sen. 6, subscore: 1.00 ]: The gain-of-function experiment by the ectopic expression of SHL4 resulted in reduced accumulation of an microRNA , miR166 , and partial adaxialization of leaves , supporting a role for the ta-siRNA pathway in the maintenance of leaf polarity as previously reported in maize .
Supplemental links/files: reference in endnote online text related articles pubmed citation
Goto:

Textpresso Sat Nov 16 07:01:22 2019 .