Abstract
Fourteen putative rice (Oryza sativa) beta-expansin genes, Os-EXPB1 through Os-EXPB14, were identified in the expressed sequence tag and genomic databases. The DNA and deduced amino acid sequences are highly conserved in all 14 beta-expansins. They have a series of conserved C (cysteine) residues in the N-terminal half of the protein, an HFD (histidine-phenylalanine-aspartate) motif in the central region, and a series of W (tryptophan) residues near the carboxyl terminus. Five beta-expansin genes are expressed in deepwater rice internodes, with especially high transcript levels in the growing region. Expression of four beta-expansin genes in the internode was induced by treatment with gibberellin and by wounding. The wound response resulted from excising stem sections or from piercing pinholes into the stem of intact plants. The level of wound-induced beta-expansin transcripts declined rapidly 5 h after cutting of stem sections. We conclude that the expression of beta-expansin genes is correlated with rapid elongation of deepwater rice internodes, it is induced by gibberellin and wounding, and wound-induced beta-expansin mRNA appears to turn over rapidly.
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Claims 8
Claim · model-written summary
Fourteen putative rice beta-expansin genes were identified.
- Taxon
- rice
Oryza sativae0 - Gene
- Os-EXPB1 through Os-EXPB14e0
- Outcome
- beta-expansin genese0
- Value
- Fourteene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fourteen putative rice (Oryza sativa) beta-expansin genes, Os-EXPB1 through Os-EXPB14, were identified in the expressed sequence tag and genomic databases.”
Claim · model-written summary
The DNA and amino acid sequences of all 14 beta-expansins are highly conserved.
- Taxon
- riceOryza sativat0
- Gene
- beta-expansinse0
- Outcome
- DNA and deduced amino acid sequencese0
- Direction
- highly conservede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The DNA and deduced amino acid sequences are highly conserved in all 14 beta-expansins.”
t0“Expression of beta-expansins is correlated with internodal elongation in deepwater rice.”
Claim · model-written summary
The beta-expansins contain conserved cysteine residues, an HFD motif, and tryptophan residues in specified protein regions.
- Taxon
- riceOryza sativat0
- Gene
- proteine0
- Outcome
- conserved C (cysteine) residues in the N-terminal half of the protein, an HFD (histidine-phenylalanine-aspartate) motif in the central region, and a series of W (tryptophan) residues near the carboxyl terminuse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They have a series of conserved C (cysteine) residues in the N-terminal half of the protein, an HFD (histidine-phenylalanine-aspartate) motif in the central region, and a series of W (tryptophan) residues near the carboxyl terminus.”
t0“Expression of beta-expansins is correlated with internodal elongation in deepwater rice.”
Claim · model-written summary
Five beta-expansin genes are expressed in deepwater rice internodes, especially in the growing region.
- Taxon
- riceOryza sativae0
- Organ / stage
- internodese0
- Gene
- beta-expansin genese0
- Outcome
- transcript levelse0
- Direction
- especially highe0
- Value
- Fivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Five beta-expansin genes are expressed in deepwater rice internodes, with especially high transcript levels in the growing region.”
Claim · model-written summary
Gibberellin induced expression of four beta-expansin genes in rice internodes.
- Taxon
- riceOryza sativat0
- Treatment
- gibberelline0
- Gene
- beta-expansin genese0
- Outcome
- Expressione0
- Direction
- inducede0
- Value
- foure0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Expression of four beta-expansin genes in the internode was induced by treatment with gibberellin and by wounding.”
t0“Expression of beta-expansins is correlated with internodal elongation in deepwater rice.”
Claim · model-written summary
Wounding induced expression of four beta-expansin genes in rice internodes.
- Taxon
- riceOryza sativat0
- Treatment
- woundinge0
- Gene
- beta-expansin genese0
- Outcome
- Expressione0
- Direction
- inducede0
- Value
- foure0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Expression of four beta-expansin genes in the internode was induced by treatment with gibberellin and by wounding.”
t0“Expression of beta-expansins is correlated with internodal elongation in deepwater rice.”
Claim · model-written summary
Wound-induced beta-expansin transcript levels declined rapidly five hours after cutting.
- Taxon
- riceOryza sativat0
- Gene
- beta-expansine0
- Outcome
- level of wound-induced beta-expansin transcriptse0
- Direction
- declined rapidlye0
- Value
- 5 he0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The level of wound-induced beta-expansin transcripts declined rapidly 5 h after cutting of stem sections.”
t0“Expression of beta-expansins is correlated with internodal elongation in deepwater rice.”
Claim · model-written summary
Beta-expansin expression is correlated with rapid internode elongation in deepwater rice.
- Taxon
- riceOryza sativae0
- Gene
- beta-expansin genese0
- Outcome
- rapid elongation of deepwater rice internodese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the expression of beta-expansin genes is correlated with rapid elongation of deepwater rice internodes”
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See all 45 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.