| 92 matches found in 57 documents. Search time: 0.16 seconds. |
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Score: 9.00 |
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| Title: Hydrogen isotope effect on transport of potassium ion in rice seedlings equilibrated with deuterium oxide .
| | Author: Shibabe S Yoda K | | Journal: Radioisotopes Citation: V : 33 ( 10 ) P : 675-9 Year: 1984 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub6097951 Accession (PMID): 6097951 | | Abstract: Potassium absorption by the root of rice seedlings , equilibrated with D2O before K+-absorption , decreased proportionally with D2O concentration and the translocation of the absorbed cations by roots to shoots decreased markedly above 40% D2O .
An inhibition curve for the absorption process drawn as a relative rate vs D2O concentration exhibits no threshold in concentration of D2O .
While K+-absorption of the seedlings unequilibrated with D2O did not change up to 60% D2O and decreased above 80% .
The concentration of D2O of root it issue water reached a balance with the external concentration within 30 min , but the concentration of shoot water required 5-6 h to balance with the external The concentration of both root and shoot water did not coincide with the external The suppressive effect of D2O on potassium absorption links not only to D/H ratio in root water but also in shoot water . | Matching Sentences:
[ Sen. 1, subscore: 3.00 ]: Potassium absorption by the root of rice seedlings , equilibrated with D2O before K+-absorption , decreased proportionally with D2O concentration and the translocation of the absorbed cations by roots to shoots decreased markedly above 40% D2O .
[ Sen. 2, subscore: 2.00 ]: An inhibition curve for the absorption process drawn as a relative rate vs D2O concentration exhibits no threshold in concentration of D2O .
[ Sen. 3, subscore: 2.00 ]: While K+-absorption of the seedlings unequilibrated with D2O did not change up to 60% D2O and decreased above 80% .
[ Sen. 4, subscore: 2.00 ]: The concentration of D2O of root it issue water reached a balance with the external concentration within 30 min , but the concentration of shoot water required 5-6 h to balance with the external The concentration of both root and shoot water did not coincide with the external The suppressive effect of D2O on potassium absorption links not only to D/H ratio in root water but also in shoot water .
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Score: 8.00 |
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| Title: A rice brassinosteroid-deficient mutant , ebisu dwarf ( d2 ) , is caused by a loss of function of a new member of cytochrome P450 .
| | Author: Hong Z Ueguchi-Tanaka M Umemura K Uozu S Fujioka S Takatsuto S Yoshida S Ashikari M Kitano H Matsuoka M | | Journal: Plant Cell Citation: V : 15 ( 12 ) P : 2900-10 Year: 2003 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub14615594 Accession (PMID): 14615594 | | Abstract: We characterized a rice dwarf mutant , ebisu dwarf ( d2 ) .
It showed the pleiotropic abnormal phenotype similar to that of the rice brassinosteroid ( BR ) -insensitive mutant , d61 .
The dwarf phenotype of d2 was rescued by exogenous brassinolide treatment .
The accumulation profile of BR intermediates in the d2 mutants confirmed that these plants are deficient in late BR biosynthesis .
We cloned the D2 gene by map-based cloning .
The D2 gene encoded a novel cytochrome P450 classified in CYP90D that is highly similar to the reported BR synthesis enzymes .
Introduction of the wild D2 gene into d2-1 rescued the abnormal phenotype of the mutants .
In feeding experiments , 3-dehydro-6-deoxoteasterone , 3-dehydroteasterone , and brassinolide effectively caused the lamina joints of the d2 plants to bend , whereas more upstream compounds did not cause bending .
Based on these results , we conclude that D2/CYP90D2 catalyzes the steps from 6-deoxoteasterone to 3-dehydro-6-deoxoteasterone and from teasterone to 3-dehydroteasterone in the late BR biosynthesis pathway . | Matching Sentences:
[ Sen. 7, subscore: 2.00 ]: Introduction of the wild D2 gene into d2-1 rescued the abnormal phenotype of the mutants .
[ Sen. 1, subscore: 1.00 ]: We characterized a rice dwarf mutant , ebisu dwarf ( d2 ) .
[ Sen. 3, subscore: 1.00 ]: The dwarf phenotype of d2 was rescued by exogenous brassinolide treatment .
[ Sen. 4, subscore: 1.00 ]: The accumulation profile of BR intermediates in the d2 mutants confirmed that these plants are deficient in late BR biosynthesis .
[ Sen. 5, subscore: 1.00 ]: We cloned the D2 gene by map-based cloning .
[ Sen. 6, subscore: 1.00 ]: The D2 gene encoded a novel cytochrome P450 classified in CYP90D that is highly similar to the reported BR synthesis enzymes .
[ Sen. 8, subscore: 1.00 ]: In feeding experiments , 3-dehydro-6-deoxoteasterone , 3-dehydroteasterone , and brassinolide effectively caused the lamina joints of the d2 plants to bend , whereas more upstream compounds did not cause bending .
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Score: 8.00 |
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| Title: DWARF27 , an Iron-Containing Protein Required for the Biosynthesis of Strigolactones , Regulates Rice Tiller Bud Outgrowth .
| | Author: Lin H Wang R Qian Q Yan M Meng X Fu Z Yan C Jiang B Su Z Li J Wang Y | | Journal: Plant Cell Citation: V : P : Year: 2009 Type: Publisher | | Literature: oryza Field: abstract Doc ID: pub19470589 Accession (PMID): 19470589 | | Abstract: Tillering in rice ( Oryza sativa ) is one of the most important agronomic traits that determine grain yields .
Previous studies on rice tillering mutants have shown that the outgrowth of tiller buds in rice is regulated by a carotenoid-derived MAX/RMS/D ( more axillary branching ) pathway , which may be conserved in higher plants .
Strigolactones , a group of terpenoid lactones , have been recently identified as products of the MAX/RMS/D pathway that inhibits axillary bud outgrowth .
We report here the molecular genetic characterization of d27 , a classic rice mutant exhibiting increased tillers and reduced plant height .
D27 encodes a novel iron-containing protein that localizes in chloroplasts and is expressed mainly in vascular cells of shoots and roots .
The phenotype of d27 is correlated with enhanced polar auxin transport .
The phenotypes of the d27 d10 double mutant are similar to those of d10 , a mutant defective in the ortholog of MAX4/RMS1 in rice .
In addition , 2-epi-5-deoxystrigol , an identified strigolactone in root exudates of rice seedlings , was undetectable in d27 , and the phenotypes of d27 could be rescued by supplementation with GR24 , a synthetic strigolactone analog .
Our results demonstrate that D27 is involved in the MAX/RMS/D pathway , in which D27 acts as a new member participating in the biosynthesis of strigolactones .
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[ Sen. 8, subscore: 2.00 ]: In addition , 2-epi-5-deoxystrigol , an identified strigolactone in root exudates of rice seedlings , was undetectable in d27 , and the phenotypes of d27 could be rescued by supplementation with GR24 , a synthetic strigolactone analog .
[ Sen. 9, subscore: 2.00 ]: Our results demonstrate that D27 is involved in the MAX/RMS/D pathway , in which D27 acts as a new member participating in the biosynthesis of strigolactones .
[ Sen. 4, subscore: 1.00 ]: We report here the molecular genetic characterization of d27 , a classic rice mutant exhibiting increased tillers and reduced plant height .
[ Sen. 5, subscore: 1.00 ]: D27 encodes a novel iron-containing protein that localizes in chloroplasts and is expressed mainly in vascular cells of shoots and roots .
[ Sen. 6, subscore: 1.00 ]: The phenotype of d27 is correlated with enhanced polar auxin transport .
[ Sen. 7, subscore: 1.00 ]: The phenotypes of the d27 d10 double mutant are similar to those of d10 , a mutant defective in the ortholog of MAX4/RMS1 in rice .
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Score: 6.00 |
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| Title: Water and potassium ion absorption by deuterium oxide resistant winter rye seedlings .
| | Author: Shibabe S Yoda K | | Journal: Radioisotopes Citation: V : 34 ( 5 ) P : 266-9 Year: 1985 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub2994178 Accession (PMID): 2994178 | | Abstract: The concentrations of deuterium oxide ( D2O ) in the root it issue water of winter rye seedlings equilibrated with the external D2O concentration within 30 min and in the shoot it issue water after 5-6 h .
The equilibrated value in the root water was 87% and in the shoot water , 55% of the external concentration .
The K+ absorption rate of the seedlings decreased from a value of 39 to 18 mumol g-1 h-1 when the D2O concentration was changed through a range from 0% to 97% .
D2O suppressed the absorption of water and K+ by the seedlings .
The higher the D2O concentration the greater the suppression , but it was less than with similarly treated rice plants .
However , the process of D2O absorption by the seedlings was similar to that of rice seedlings ( Envir . exp .
Bot . , 24 , 369 ) .
| Matching Sentences:
[ Sen. 1, subscore: 2.00 ]: The concentrations of deuterium oxide ( D2O ) in the root it issue water of winter rye seedlings equilibrated with the external D2O concentration within 30 min and in the shoot it issue water after 5-6 h .
[ Sen. 3, subscore: 1.00 ]: The K+ absorption rate of the seedlings decreased from a value of 39 to 18 mumol g-1 h-1 when the D2O concentration was changed through a range from 0% to 97% .
[ Sen. 4, subscore: 1.00 ]: D2O suppressed the absorption of water and K+ by the seedlings .
[ Sen. 5, subscore: 1.00 ]: The higher the D2O concentration the greater the suppression , but it was less than with similarly treated rice plants .
[ Sen. 6, subscore: 1.00 ]: However , the process of D2O absorption by the seedlings was similar to that of rice seedlings ( Envir . exp .
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Score: 5.00 |
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| Title: Transport of calcium , germanium and rubidium ions in rice seedlings in deuterium oxide .
| | Author: Shibabe S Yoda K | | Journal: Radioisotopes Citation: V : 33 ( 9 ) P : 606-10 Year: 1984 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub6096930 Accession (PMID): 6096930 | | Abstract: Deuterium oxide affected all types of transport processes of ions in rice seedlings .
The processes of the active transport of Rb+ , the passive diffusion of Ca2+ , and the preferential and specific absorption of Ge by the seedlings in D2O solutions , were suppressively distorted by D2O .
The suppressive effect on the translocation of all ions studied and the absorption of Rb+ , was greater with higher concentrations of D2O .
However , clear-cut relations of the effect of increasing D2O concentrations on the ion transport were not obtained .
The extent of the replacement of H2O by D2O in the plant appeared to affect the movement of ions in the plant . | Matching Sentences:
[ Sen. 2, subscore: 2.00 ]: The processes of the active transport of Rb+ , the passive diffusion of Ca2+ , and the preferential and specific absorption of Ge by the seedlings in D2O solutions , were suppressively distorted by D2O .
[ Sen. 3, subscore: 1.00 ]: The suppressive effect on the translocation of all ions studied and the absorption of Rb+ , was greater with higher concentrations of D2O .
[ Sen. 4, subscore: 1.00 ]: However , clear-cut relations of the effect of increasing D2O concentrations on the ion transport were not obtained .
[ Sen. 5, subscore: 1.00 ]: The extent of the replacement of H2O by D2O in the plant appeared to affect the movement of ions in the plant .
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