| 13 matches found in 3 documents. Search time: 1.232 seconds. |
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Score: 12.00 |
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| Title: A rice heterochronic mutant , mori1 , is defective in the juvenile-adult phase change .
| | Author: Asai K Satoh N Sasaki H Satoh H Nagato Y | | Journal: Development Citation: V : 129 ( 1 ) P : 265-73 Year: 2002 Type: ARTICLE | | Literature: oryza Field: abstract Doc ID: pub11782419 Accession (PMID): 11782419 | | Abstract: We have identified five recessive allelic mutations , mori1-1 to mori1-5 , which drastically modify the shoot architecture of rice .
The most remarkable feature of mori1 plants is a rapid production of small leaves and short branches .
The mori1 plants are about 5 cm in height even 7 months after sowing .
No reproductive growth was attained in mori1 plants even if inductive short-day treatment was applied .
Leaves of mori1 at any position were very small and the size and shape were comparable to those of the wild-type 2nd leaf .
The stem of mori1 7 months after sowing did not differentiate node and internode and had randomly oriented vascular bundles , which were characteristic of the basal part of the wild-type stem where 2nd and 3rd leaves were inserted .
These structural characteristics indicate that mori1 maintains the 2nd-leaf stage ( juvenile phase ) of the wild type .
The short plastochron and high cell division activity in the shoot apical meristem further confirmed the juvenility of mori1 , corresponding to the 2nd-leaf-differentiation stage in the wild-type embryo .
Furthermore , the apparent photosynthetic rate in mori1 leaves was low as in the wild-type 2nd leaf .
Thus , mori1 is a heterochronic mutation that suppresses the induction of adult phase and the termination of the juvenile phase .
Therefore , MORI1 plays an important role in the juvenile-adult phase change .
The importance of heterochronic mutations in modifying shoot architecture is discussed . | Matching Sentences:
[ Sen. 1, subscore: 2.00 ]: We have identified five recessive allelic mutations , mori1-1 to mori1-5 , which drastically modify the shoot architecture of rice .
[ Sen. 2, subscore: 1.00 ]: The most remarkable feature of mori1 plants is a rapid production of small leaves and short branches .
[ Sen. 3, subscore: 1.00 ]: The mori1 plants are about 5 cm in height even 7 months after sowing .
[ Sen. 4, subscore: 1.00 ]: No reproductive growth was attained in mori1 plants even if inductive short-day treatment was applied .
[ Sen. 5, subscore: 1.00 ]: Leaves of mori1 at any position were very small and the size and shape were comparable to those of the wild-type 2nd leaf .
[ Sen. 6, subscore: 1.00 ]: The stem of mori1 7 months after sowing did not differentiate node and internode and had randomly oriented vascular bundles , which were characteristic of the basal part of the wild-type stem where 2nd and 3rd leaves were inserted .
[ Sen. 7, subscore: 1.00 ]: These structural characteristics indicate that mori1 maintains the 2nd-leaf stage ( juvenile phase ) of the wild type .
[ Sen. 8, subscore: 1.00 ]: The short plastochron and high cell division activity in the shoot apical meristem further confirmed the juvenility of mori1 , corresponding to the 2nd-leaf-differentiation stage in the wild-type embryo .
[ Sen. 9, subscore: 1.00 ]: Furthermore , the apparent photosynthetic rate in mori1 leaves was low as in the wild-type 2nd leaf .
[ Sen. 10, subscore: 1.00 ]: Thus , mori1 is a heterochronic mutation that suppresses the induction of adult phase and the termination of the juvenile phase .
[ Sen. 11, subscore: 1.00 ]: Therefore , MORI1 plays an important role in the juvenile-adult phase change .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 1.00 |
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| Title: The COP1 ortholog PPS regulates the juvenile-adult and vegetative-reproductive phase changes in rice .
| | Author: Tanaka N Itoh H Sentoku N Kojima M Sakakibara H Izawa T Itoh J Nagato Y | | Journal: Plant Cell Citation: V : 23 P : 2143-54 Year: 2011 Type: In-Process | | Literature: oryza Field: abstract Doc ID: pub21705640 Accession (PMID): 21705640 | | Abstract: Because plant reproductive development occurs only in adult plants , the juvenile-to-adult phase change is an indispensable part of the plant life cycle .
We identified two allelic mutants , peter pan syndrome-1 ( pps-1 ) and pps-2 , that prolong the juvenile phase in rice ( Oryza sativa ) and showed that rice PPS is an ortholog of Arabidopsis thaliana CONSTITUTIVE PHOTOMORPHOGENIC1 .
The pps-1 mutant exhibits delayed expression of miR156 and miR172 and the suppression of GA biosynthetic genes , reducing the GA ( 3 ) content in this mutant .
In spite of its prolonged juvenile phase , the pps-1 mutant flowers early , and this is associated with derepression of RAP1B expression in pps-1 plants independently of the Hd1-Hd3a/RFT1 photoperiodic pathway .
PPS is strongly expressed in the fourth and fifth leaves , suggesting that it regulates the onset of the adult phase downstream of MORI1 and upstream of miR156 and miR172 .
Its ability to regulate the vegetative phase change and the time of flowering suggests that rice PPS acquired novel functions during the evolution of rice/monocots .
| Matching Sentences:
[ Sen. 5, subscore: 1.00 ]: PPS is strongly expressed in the fourth and fifth leaves , suggesting that it regulates the onset of the adult phase downstream of MORI1 and upstream of miR156 and miR172 .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 1.00 |
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| Title: A rice heterochronic mutant , mori1 , is defective in the juvenile-adult phase change .
| | Author: Asai K Satoh N Sasaki H Satoh H Nagato Y | | Journal: Development Citation: V : 129 ( 1 ) P : 265-73 Year: 2002 Type: ARTICLE | | Literature: oryza Field: title Doc ID: pub11782419 Accession (PMID): 11782419 | | Abstract: We have identified five recessive allelic mutations , mori1-1 to mori1-5 , which drastically modify the shoot architecture of rice .
The most remarkable feature of mori1 plants is a rapid production of small leaves and short branches .
The mori1 plants are about 5 cm in height even 7 months after sowing .
No reproductive growth was attained in mori1 plants even if inductive short-day treatment was applied .
Leaves of mori1 at any position were very small and the size and shape were comparable to those of the wild-type 2nd leaf .
The stem of mori1 7 months after sowing did not differentiate node and internode and had randomly oriented vascular bundles , which were characteristic of the basal part of the wild-type stem where 2nd and 3rd leaves were inserted .
These structural characteristics indicate that mori1 maintains the 2nd-leaf stage ( juvenile phase ) of the wild type .
The short plastochron and high cell division activity in the shoot apical meristem further confirmed the juvenility of mori1 , corresponding to the 2nd-leaf-differentiation stage in the wild-type embryo .
Furthermore , the apparent photosynthetic rate in mori1 leaves was low as in the wild-type 2nd leaf .
Thus , mori1 is a heterochronic mutation that suppresses the induction of adult phase and the termination of the juvenile phase .
Therefore , MORI1 plays an important role in the juvenile-adult phase change .
The importance of heterochronic mutations in modifying shoot architecture is discussed . | Matching Sentences:
[ Sen. 1, subscore: 1.00 ]: A rice heterochronic mutant , mori1 , is defective in the juvenile-adult phase change .
| | Supplemental links/files: reference in endnote online text related articles pubmed citation | |
