|
|
|
|
| LEADER |
01000caa a22002652 4500 |
| 001 |
NLM195175123 |
| 003 |
DE-627 |
| 005 |
20240317232058.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231223s2010 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1093/jxb/erq010
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n1333.xml
|
| 035 |
|
|
|a (DE-627)NLM195175123
|
| 035 |
|
|
|a (NLM)20164142
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Lim, Pyung Ok
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Auxin response factor 2 (ARF2) plays a major role in regulating auxin-mediated leaf longevity
|
| 264 |
|
1 |
|c 2010
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 07.06.2010
|
| 500 |
|
|
|a Date Revised 17.03.2024
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status MEDLINE
|
| 520 |
|
|
|a Auxin regulates a variety of physiological and developmental processes in plants. Although auxin acts as a suppressor of leaf senescence, its exact role in this respect has not been clearly defined, aside from circumstantial evidence. It was found here that ARF2 functions in the auxin-mediated control of Arabidopsis leaf longevity, as discovered by screening EMS mutant pools for a delayed leaf senescence phenotype. Two allelic mutations, ore14-1 and 14-2, caused a highly significant delay in all senescence parameters examined, including chlorophyll content, the photochemical efficiency of photosystem II, membrane ion leakage, and the expression of senescence-associated genes. A delay of senescence symptoms was also observed under various senescence-accelerating conditions, where detached leaves were treated with darkness, phytohormones, or oxidative stress. These results indicate that the gene defined by these mutations might be a key regulatory genetic component controlling functional leaf senescence. Map-based cloning of ORE14 revealed that it encodes ARF2, a member of the auxin response factor (ARF) protein family, which modulates early auxin-induced gene expression in plants. The ore14/arf2 mutation also conferred an increased sensitivity to exogenous auxin in hypocotyl growth inhibition, thereby demonstrating that ARF2 is a repressor of auxin signalling. Therefore, the ore14/arf2 lesion appears to cause reduced repression of auxin signalling with increased auxin sensitivity, leading to delayed senescence. Altogether, our data suggest that ARF2 positively regulates leaf senescence in Arabidopsis
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a Research Support, Non-U.S. Gov't
|
| 650 |
|
7 |
|a ARF2 protein, Arabidopsis
|2 NLM
|
| 650 |
|
7 |
|a Arabidopsis Proteins
|2 NLM
|
| 650 |
|
7 |
|a Indoleacetic Acids
|2 NLM
|
| 650 |
|
7 |
|a Repressor Proteins
|2 NLM
|
| 700 |
1 |
|
|a Lee, In Chul
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Kim, Junyoung
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Kim, Hyo Jung
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Ryu, Jong Sang
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Woo, Hye Ryun
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Nam, Hong Gil
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 61(2010), 5 vom: 01. März, Seite 1419-30
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
|
| 773 |
1 |
8 |
|g volume:61
|g year:2010
|g number:5
|g day:01
|g month:03
|g pages:1419-30
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1093/jxb/erq010
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 61
|j 2010
|e 5
|b 01
|c 03
|h 1419-30
|