12 matches found in 4 documents. Search time: 0.127 seconds. |
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Score: 6.00 | Title: Inflorescence Meristem Identity in Rice Is Specified by Overlapping Functions of Three AP1/FUL-Like MADS Box Genes and PAP2 , a SEPALLATA MADS Box Gene .
| Author: Kobayashi K Yasuno N Sato Y Yoda M Yamazaki R Kimizu M Yoshida H Nagamura Y Kyozuka J | Journal: Plant Cell Citation: V : 24 P : 1848-59 Year: 2012 Type: In-Data-Review | Literature: oryza Field: abstract Doc ID: pub22570445 Accession (PMID): 22570445 | Abstract: In plants , the transition to reproductive growth is of particular importance for successful seed production .
Transformation of the shoot apical meristem ( SAM ) to the inflorescence meristem ( IM ) is the crucial first step in this transition .
Using laser microdissection and microarrays , we found that expression of PANICLE PHYTOMER2 ( PAP2 ) and three APETALA1 ( AP1 ) /FRUITFULL ( FUL ) -like genes ( MADS14 , MADS15 , and MADS18 ) is induced in the SAM during meristem phase transition in rice ( Oryza sativa ) .
PAP2 is a MADS box gene belonging to a grass-specific subclade of the SEPALLATA subfamily .
Suppression of these three AP1/FUL-like genes by RNA interference caused a slight delay in reproductive transition .
Further depletion of PAP2 function from these triple knockdown plants inhibited the transition of the meristem to the IM .
In the quadruple knockdown lines , the meristem continued to generate leaves , rather than becoming an IM .
Consequently , multiple shoots were formed instead of an inflorescence .
PAP2 physically interacts with MAD14 and MADS15 in vivo .
Furthermore , the precocious flowering phenotype caused by the overexpression of Hd3a , a rice florigen gene , was weakened in pap2-1 mutants .
Based on these results , we propose that PAP2 and the three AP1/FUL-like genes coordinately act in the meristem to specify the identity of the IM downstream of the florigen signal | Matching Sentences: [ Sen. 3, subscore: 1.00 ]: Using laser microdissection and microarrays , we found that expression of PANICLE PHYTOMER2 ( PAP2 ) and three APETALA1 ( AP1 ) /FRUITFULL ( FUL ) -like genes ( MADS14 , MADS15 , and MADS18 ) is induced in the SAM during meristem phase transition in rice ( Oryza sativa ) . [ Sen. 4, subscore: 1.00 ]: PAP2 is a MADS box gene belonging to a grass-specific subclade of the SEPALLATA subfamily . [ Sen. 6, subscore: 1.00 ]: Further depletion of PAP2 function from these triple knockdown plants inhibited the transition of the meristem to the IM . [ Sen. 9, subscore: 1.00 ]: PAP2 physically interacts with MAD14 and MADS15 in vivo . [ Sen. 10, subscore: 1.00 ]: Furthermore , the precocious flowering phenotype caused by the overexpression of Hd3a , a rice florigen gene , was weakened in pap2-1 mutants . [ Sen. 11, subscore: 1.00 ]: Based on these results , we propose that PAP2 and the three AP1/FUL-like genes coordinately act in the meristem to specify the identity of the IM downstream of the florigen signal
| Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 5.00 | Title: PANICLE PHYTOMER2 ( PAP2 ) , encoding a SEPALLATA subfamily MADS-box protein , positively controls spikelet meristem identity in rice .
| Author: Kobayashi K Maekawa M Miyao A Hirochika H Kyozuka J | Journal: Plant Cell Physiol Citation: V : 51 P : 47-57 Year: 2010 Type: MEDLINE | Literature: oryza Field: abstract Doc ID: pub19933267 Accession (PMID): 19933267 | Abstract: In rice panicle development , new meristems are generated sequentially in an organized manner and acquire their identity in a time and position-dependent manner .
In the panicle of the panicle phytomer2-1 ( pap2-1 ) mutant , the pattern of meristem initiation is disorganized and newly formed meristems show reduced competency to become spikelet meristems , resulting in the transformation of early arising spikelets into rachis branches .
In addition , rudimentary glumes and sterile lemmas , the outermost organs of the spikelet , elongate into a leafy morphology .
We propose that PAP2 is a positive regulator of spikelet meristem identity .
Map-based cloning revealed that PAP2 encodes OsMADS34 , a member of the SEPALLATA ( SEP ) subfamily of MADS-box proteins .
PAP2/OsMADS34 belongs to the LOFSEP subgroup of MADS-box genes that show grass-specific diversification caused by gene duplication events .
All five SEP subfamily genes in rice are expressed exclusively during panicle development , while their spatial and temporal expression patterns vary .
PAP2 expression starts the earliest among the five SEP genes , and a low but significant level of PAP2 mRNA was detected in the inflorescence meristem , in branch meristems immediately after the transition , and in glume primordia , consistent with its role in the early development of spikelet formation .
Our study provides new evidence supporting the hypothesis that the genes of the LOFSEP subgroup control developmental processes that are unique to grass species .
| Matching Sentences: [ Sen. 8, subscore: 2.00 ]: PAP2 expression starts the earliest among the five SEP genes , and a low but significant level of PAP2 mRNA was detected in the inflorescence meristem , in branch meristems immediately after the transition , and in glume primordia , consistent with its role in the early development of spikelet formation . [ Sen. 2, subscore: 1.00 ]: In the panicle of the panicle phytomer2-1 ( pap2-1 ) mutant , the pattern of meristem initiation is disorganized and newly formed meristems show reduced competency to become spikelet meristems , resulting in the transformation of early arising spikelets into rachis branches . [ Sen. 4, subscore: 1.00 ]: We propose that PAP2 is a positive regulator of spikelet meristem identity . [ Sen. 5, subscore: 1.00 ]: Map-based cloning revealed that PAP2 encodes OsMADS34 , a member of the SEPALLATA ( SEP ) subfamily of MADS-box proteins .
| Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 1.00 | Title: PANICLE PHYTOMER2 ( PAP2 ) , encoding a SEPALLATA subfamily MADS-box protein , positively controls spikelet meristem identity in rice .
| Author: Kobayashi K Maekawa M Miyao A Hirochika H Kyozuka J | Journal: Plant Cell Physiol Citation: V : 51 P : 47-57 Year: 2010 Type: MEDLINE | Literature: oryza Field: title Doc ID: pub19933267 Accession (PMID): 19933267 | Abstract: In rice panicle development , new meristems are generated sequentially in an organized manner and acquire their identity in a time and position-dependent manner .
In the panicle of the panicle phytomer2-1 ( pap2-1 ) mutant , the pattern of meristem initiation is disorganized and newly formed meristems show reduced competency to become spikelet meristems , resulting in the transformation of early arising spikelets into rachis branches .
In addition , rudimentary glumes and sterile lemmas , the outermost organs of the spikelet , elongate into a leafy morphology .
We propose that PAP2 is a positive regulator of spikelet meristem identity .
Map-based cloning revealed that PAP2 encodes OsMADS34 , a member of the SEPALLATA ( SEP ) subfamily of MADS-box proteins .
PAP2/OsMADS34 belongs to the LOFSEP subgroup of MADS-box genes that show grass-specific diversification caused by gene duplication events .
All five SEP subfamily genes in rice are expressed exclusively during panicle development , while their spatial and temporal expression patterns vary .
PAP2 expression starts the earliest among the five SEP genes , and a low but significant level of PAP2 mRNA was detected in the inflorescence meristem , in branch meristems immediately after the transition , and in glume primordia , consistent with its role in the early development of spikelet formation .
Our study provides new evidence supporting the hypothesis that the genes of the LOFSEP subgroup control developmental processes that are unique to grass species .
| Matching Sentences: [ Sen. 1, subscore: 1.00 ]: PANICLE PHYTOMER2 ( PAP2 ) , encoding a SEPALLATA subfamily MADS-box protein , positively controls spikelet meristem identity in rice .
| Supplemental links/files: reference in endnote online text related articles pubmed citation | |
Score: 1.00 | Title: Inflorescence Meristem Identity in Rice Is Specified by Overlapping Functions of Three AP1/FUL-Like MADS Box Genes and PAP2 , a SEPALLATA MADS Box Gene .
| Author: Kobayashi K Yasuno N Sato Y Yoda M Yamazaki R Kimizu M Yoshida H Nagamura Y Kyozuka J | Journal: Plant Cell Citation: V : 24 P : 1848-59 Year: 2012 Type: In-Data-Review | Literature: oryza Field: title Doc ID: pub22570445 Accession (PMID): 22570445 | Abstract: In plants , the transition to reproductive growth is of particular importance for successful seed production .
Transformation of the shoot apical meristem ( SAM ) to the inflorescence meristem ( IM ) is the crucial first step in this transition .
Using laser microdissection and microarrays , we found that expression of PANICLE PHYTOMER2 ( PAP2 ) and three APETALA1 ( AP1 ) /FRUITFULL ( FUL ) -like genes ( MADS14 , MADS15 , and MADS18 ) is induced in the SAM during meristem phase transition in rice ( Oryza sativa ) .
PAP2 is a MADS box gene belonging to a grass-specific subclade of the SEPALLATA subfamily .
Suppression of these three AP1/FUL-like genes by RNA interference caused a slight delay in reproductive transition .
Further depletion of PAP2 function from these triple knockdown plants inhibited the transition of the meristem to the IM .
In the quadruple knockdown lines , the meristem continued to generate leaves , rather than becoming an IM .
Consequently , multiple shoots were formed instead of an inflorescence .
PAP2 physically interacts with MAD14 and MADS15 in vivo .
Furthermore , the precocious flowering phenotype caused by the overexpression of Hd3a , a rice florigen gene , was weakened in pap2-1 mutants .
Based on these results , we propose that PAP2 and the three AP1/FUL-like genes coordinately act in the meristem to specify the identity of the IM downstream of the florigen signal | Matching Sentences: [ Sen. 1, subscore: 1.00 ]: Inflorescence Meristem Identity in Rice Is Specified by Overlapping Functions of Three AP1/FUL-Like MADS Box Genes and PAP2 , a SEPALLATA MADS Box Gene .
| Supplemental links/files: reference in endnote online text related articles pubmed citation | |