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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.
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For example, to find all the papers in the search result that have
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, 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].
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4 matches found in
2 documents.
Search time: 0.002 seconds.
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Score:
3.00
Title:
Epidermal cell death in rice is confined to cells with a distinct molecular identity and is mediated by ethylene and H2O2 through an autoamplified signal pathway .
Author:
Steffens B Sauter M
Journal:
Plant Cell
Citation:
V : 21 P : 184-96
Year:
2009
Type:
MEDLINE
Literature:
oryza
Field:
abstract
Doc ID:
pub19141708
Accession (PMID):
19141708
Abstract:
Rice ( Oryza sativa ) forms adventitious root primordia at stem nodes during normal development . Root emergence is preceded by ethylene-induced , H ( 2 ) O ( 2 ) -mediated local death of epidermal cells . Exogenous H ( 2 ) O ( 2 ) or enhancement of endogenous H ( 2 ) O ( 2 ) promoted epidermal cell death in a dose-dependent manner . Inhibition of NADPH oxidase lowered ethylene-induced cell death rates . Inhibition of ethylene perception by 1-methylcyclopropene did not abolish H ( 2 ) O ( 2 ) -induced cell death , indicating that H ( 2 ) O ( 2 ) acts downstream of ethylene . Microarray studies of epidermal cells that undergo cell death identified 61 genes coregulated by the ethylene-releasing compound ethephon and by H ( 2 ) O ( 2 ) , supporting a joint signaling pathway . Regulation of the ethylene biosynthetic genes 1-Aminocyclopropane-1-Carboxylate Oxidase1 and Ethylene Overproducer-Like1 and downregulation of Metallothionein2b (
MT2b
) , which encodes a reactive oxygen scavenger , indicated mutual enhancement of ethylene and H ( 2 ) O ( 2 ) signaling . Analysis of
MT2b
knockdown mutants showed that cell death rates were inversely related to
MT2b
transcript abundance . Epidermal cells above adventitious roots have a morphological and molecular identity distinct from other epidermal cells . Pro-death signals regulated several transcription factor genes with a proposed function in cell type specification . It is hypothesized that induction of cell death is dependent on epidermal cell identity .
Supplemental links/files:
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pubmed citation
Score:
2.00
Title:
Aerenchyma formation in the rice stem and its promotion by H2O2 .
Author:
Steffens B Geske T Sauter M
Journal:
New Phytol
Citation:
V : 190 P : 369-78
Year:
2011
Type:
MEDLINE
Literature:
oryza
Field:
abstract
Doc ID:
pub21039565
Accession (PMID):
21039565
Abstract:
* Gas spaces ( aerenchyma ) form as an adaptation to submergence to facilitate gas exchange . In rice ( Oryza sativa ) , aerenchyma develop by cell death and lysis , which are poorly understood at the cellular level . * Aerenchyma formation was studied in rice stems by light microscopy . It was analyzed in response to submergence , ethylene and hydrogen peroxide ( H ( 2 ) O ( 2 ) ) treatment , and in the
MT2b
: : Tos17 mutant . O ( 2 ) . ( - ) was detected with nitroblue tetrazolium and an epinephrine assay . H ( 2 ) O ( 2 ) was detected with 3 , 3-diaminobenzidine . * Aerenchyma develop constitutively in all internodes of the deep-water rice variety Pin Gaew 56 , but are absent from the nodes . Constitutive aerenchyma formation was also observed in two lowland rice varieties , albeit to a lesser degree . A larger number of aerenchyma are present in older internodes , and at the top of each internode , revealing developmental gradients . Submergence or treatment with the ethylene-releasing compound ethephon promoted aerenchyma formation in all genotypes analyzed . Pre-aerenchymal cells contain less starch , no chloroplasts , thinner cell walls and produce elevated levels of O ( 2 ) . ( - ) and H ( 2 ) O ( 2 ) compared with other parenchymal cells . Ethephon promotes O ( 2 ) . ( - ) formation and H ( 2 ) O ( 2 ) promotes aerenchyma formation in a dose-dependent manner . Further-more , genetic downregulation of the H ( 2 ) O ( 2 ) scavenger
MT2b
enhances aerenchyma formation . * Aerenchyma formation is mediated by reactive oxygen species .
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