Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis
Chloroplasts of leaves under high light stress initiate signals to the nuclei of both exposed and distal leaves in order to acclimate against the potential threat of oxidative damage: a process known as high light systemic acquired acclimation (HL SAA). This study explores the nature of HL SAA, syne...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2013-01-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fpls.2012.00303/full |
| _version_ | 1811283546205061120 |
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| author | Matthew John Gordon Melanie E Carmody Veronica eAlbrecht Barry ePogson |
| author_facet | Matthew John Gordon Melanie E Carmody Veronica eAlbrecht Barry ePogson |
| author_sort | Matthew John Gordon |
| collection | DOAJ |
| description | Chloroplasts of leaves under high light stress initiate signals to the nuclei of both exposed and distal leaves in order to acclimate against the potential threat of oxidative damage: a process known as high light systemic acquired acclimation (HL SAA). This study explores the nature of HL SAA, synergistic interactions with other environmental stresses, and the impact of repeated HL stress on the acclimation response of exposed and distal leaves. This necessitated the development of novel experimental systems to investigate the initiation, perception and response to HL SAA. These systems were used to investigate the HL SAA response by monitoring the induction of mRNA in distal leaves not exposed to the HL stress. Acclimation to HL is induced within minutes and the response is proportionally dependent on the quality and quantity of light. HL SAA treatments in conjunction with variations in temperature and humidity reveal HL SAA is influenced by fluctuations in humidity. These treatments also result in changes in auxin accumulation and auxin-responsive genes. A key question in retrograde signaling is the extent to which transient changes in light intensity result in a memory of the event leading to acclimation responses. Repeated exposure to short term HL resulted in acclimation of the exposed tissue and that of emerging and young leaves (but not older leaves) to HL and oxidative stress. |
| first_indexed | 2024-04-13T02:13:24Z |
| format | Article |
| id | doaj.art-2b277540979b43a9bc6e47676bcc15b7 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-13T02:13:24Z |
| publishDate | 2013-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-2b277540979b43a9bc6e47676bcc15b72022-12-22T03:07:13ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2013-01-01310.3389/fpls.2012.0030339607Systemic and local responses to repeated HL stress-induced retrograde signaling in ArabidopsisMatthew John Gordon0Melanie E Carmody1Veronica eAlbrecht2Barry ePogson3Autralian National UniversityAutralian National UniversityAutralian National UniversityAutralian National UniversityChloroplasts of leaves under high light stress initiate signals to the nuclei of both exposed and distal leaves in order to acclimate against the potential threat of oxidative damage: a process known as high light systemic acquired acclimation (HL SAA). This study explores the nature of HL SAA, synergistic interactions with other environmental stresses, and the impact of repeated HL stress on the acclimation response of exposed and distal leaves. This necessitated the development of novel experimental systems to investigate the initiation, perception and response to HL SAA. These systems were used to investigate the HL SAA response by monitoring the induction of mRNA in distal leaves not exposed to the HL stress. Acclimation to HL is induced within minutes and the response is proportionally dependent on the quality and quantity of light. HL SAA treatments in conjunction with variations in temperature and humidity reveal HL SAA is influenced by fluctuations in humidity. These treatments also result in changes in auxin accumulation and auxin-responsive genes. A key question in retrograde signaling is the extent to which transient changes in light intensity result in a memory of the event leading to acclimation responses. Repeated exposure to short term HL resulted in acclimation of the exposed tissue and that of emerging and young leaves (but not older leaves) to HL and oxidative stress.http://journal.frontiersin.org/Journal/10.3389/fpls.2012.00303/fullOxidative StressPhotoprotectionretrograde signalingSystemic acquired acclimationhigh light |
| spellingShingle | Matthew John Gordon Melanie E Carmody Veronica eAlbrecht Barry ePogson Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis Frontiers in Plant Science Oxidative Stress Photoprotection retrograde signaling Systemic acquired acclimation high light |
| title | Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis |
| title_full | Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis |
| title_fullStr | Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis |
| title_full_unstemmed | Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis |
| title_short | Systemic and local responses to repeated HL stress-induced retrograde signaling in Arabidopsis |
| title_sort | systemic and local responses to repeated hl stress induced retrograde signaling in arabidopsis |
| topic | Oxidative Stress Photoprotection retrograde signaling Systemic acquired acclimation high light |
| url | http://journal.frontiersin.org/Journal/10.3389/fpls.2012.00303/full |
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