Overexpression of the CBF2 transcriptional activator in Arabidopsis suppresses the responsiveness of leaf tissue to the stress hormone ethylene

Plant Biology
Michal Sharabi-SchwagerRon Porat

Abstract

The plant hormone ethylene affects myriad developmental processes ranging from seed germination to organ senescence, and plays a crucial role in plant resistance to environmental stresses. The C-repeat/dehydration-responsive element binding factor genes (CBF1-3) are transcriptional activators involved in plant low-temperatures responses; their overexpression enhances frost tolerance, but also has various pleiotropic effects on growth and development, mainly growth retardation and delay of flowering and senescence. We found that overexpression of CBF2 in Arabidopsis suppressed leaf tissue responsiveness to ethylene as compared with wild-type plants, as manifested in significantly delayed senescence and chlorophyll degradation. In wild-type plants, exposure to ethylene at 0.1 microl.l(-1) for 48 h caused 50% reduction in chlorophyll levels as compared to leaves held in air alone, whereas CBF2-overexpressing plants required an ethylene concentration of 10.0 microl.l(-1) to cause the same effect. Furthermore, continuous exposure to ethylene at 1.0 microl.l(-1) reduced chlorophyll content in wild-type leaves by 50% after 42 h but took 72 h in CBF2-overexpressing plants. Transcript profiling of ethylene receptors and signal transduct...Continue Reading

References

Sep 11, 1998·Plant Physiology·M F Thomashow
Sep 15, 1998·Biochemical and Biophysical Research Communications·Z K ShinwariK Shinozaki
Feb 3, 1999·Annual Review of Genetics·P R Johnson, J R Ecker
Jul 17, 1999·Trends in Plant Science·A B Bleecker
Jun 6, 2000·Current Opinion in Plant Biology·K Shinozaki, K Yamaguchi-Shinozaki
Jul 19, 2000·The Plant Cell·N BeaudoinJ Giraudat
Aug 6, 2000·The Plant Journal : for Cell and Molecular Biology·A J ThompsonI B Taylor
Oct 14, 2000·Annual Review of Cell and Developmental Biology·A B Bleecker, H Kende
Jan 12, 2001·Plant Physiology·M F Thomashow
May 25, 2002·Health Affairs·Donald M Berwick
Jan 21, 2004·Current Opinion in Plant Biology·Hongwei Guo, Joseph R Ecker
Feb 6, 2004·The Plant Journal : for Cell and Molecular Biology·Wim H VriezenDominique Van Der Straeten
Mar 5, 2004·The Plant Journal : for Cell and Molecular Biology·Oliver ThimmMark Stitt
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Michael F. Thomashow
Jun 18, 2004·The Plant Journal : for Cell and Molecular Biology·Hannele TuominenJaakko Kangasjärvi
Sep 10, 2004·Plant Molecular Biology·Sarah J GilmourMichael F Thomashow
Mar 9, 2005·Annals of Botany·Yi-Feng ChenG Eric Schaller
Jul 20, 2005·Proceedings of the National Academy of Sciences of the United States of America·Andrea A LudwigTina Romeis
Sep 21, 2005·Journal of Experimental Botany·Hai-Chun JingPaul P Dijkwel
Nov 22, 2005·The Plant Journal : for Cell and Molecular Biology·Joris J BenschopLaurentius A C J Voesenek
Dec 26, 2006·Plant Physiology·Wan-Hong CaoJin-Song Zhang
Jul 17, 2007·The Plant Cell·Anna N StepanovaJose M Alonso
Oct 25, 2007·Annals of Botany·Michael B Jackson
Feb 14, 2009·Stem Cell Reviews and Reports·Shih-Ning Then

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