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A transcriptional t...
A transcriptional timetable of autumn senescence
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- Andersson, Anders (author)
- KTH,Bioteknologi
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- Keskitalo, Johanna (author)
- Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för fysiologisk botanik
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- Sjödin, Andreas (author)
- Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för fysiologisk botanik
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- Bhalerao, Rupali (author)
- KTH,Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för fysiologisk botanik,Bioteknologi
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- Sterky, Fredrik (author)
- KTH,Bioteknologi
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- Wissel, Kirsten (author)
- Umeå universitet,Umeå Plant Science Centre (UPSC),Institutionen för fysiologisk botanik
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Tandre, Karolina (author)
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- Aspeborg, Henrik (author)
- KTH,Bioteknologi
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Moyle, Richard (author)
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Ohmiya, Yasunori (author)
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Bhalerao, Rishikesh (author)
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Brunner, Amy (author)
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- Gustafsson, Petter, 1948- (author)
- Umeå universitet,Institutionen för fysiologisk botanik
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- Karlsson, Jan, 1966- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Lundeberg, Joakim (author)
- KTH,Bioteknologi
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Nilsson, Ove (author)
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Sandberg, Göran (author)
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Strauss, Steven (author)
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Sundberg, Björn (author)
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- Uhlén, Mathias (author)
- KTH,Bioteknologi
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- Jansson, Stefan, 1959- (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Nilsson, Peter (author)
- KTH,Bioteknologi
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(creator_code:org_t)
- Springer Science and Business Media LLC, 2004
- 2004
- English.
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In: Genome Biology. - : Springer Science and Business Media LLC. - 1465-6906 .- 1474-760X. ; 5:4, s. R24-
- Related links:
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http://genomebiology...
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https://genomebiolog...
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https://urn.kb.se/re...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Background We have developed genomic tools to allow the genus Populus (aspens and cottonwoods) to be exploited as a full-featured model for investigating fundamental aspects of tree biology. We have undertaken large-scale expressed sequence tag (EST) sequencing programs and created Populus microarrays with significant gene coverage. One of the important aspects of plant biology that cannot be studied in annual plants is the gene activity involved in the induction of autumn leaf senescence. Results On the basis of 36,354 Populus ESTs, obtained from seven cDNA libraries, we have created a DNA microarray consisting of 13,490 clones, spotted in duplicate. Of these clones, 12,376 (92%) were confirmed by resequencing and all sequences were annotated and functionally classified. Here we have used the microarray to study transcript abundance in leaves of a free-growing aspen tree (Populus tremula) in northern Sweden during natural autumn senescence. Of the 13,490 spotted clones, 3,792 represented genes with significant expression in all leaf samples from the seven studied dates. Conclusions We observed a major shift in gene expression, coinciding with massive chlorophyll degradation, that reflected a shift from photosynthetic competence to energy generation by mitochondrial respiration, oxidation of fatty acids and nutrient mobilization. Autumn senescence had much in common with senescence in annual plants; for example many proteases were induced. We also found evidence for increased transcriptional activity before the appearance of visible signs of senescence, presumably preparing the leaf for degradation of its components.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Keyword
- Aging/*genetics
- Cell Death/genetics
- Chronobiology/*genetics
- DNA; Complementary/genetics
- DNA; Plant/genetics
- Expressed Sequence Tags
- Gene Expression Profiling/methods
- Gene Expression Regulation; Plant/genetics
- Gene Library
- Oligonucleotide Array Sequence Analysis/methods
- Plant Leaves/genetics
- Populus/cytology/genetics
- RNA; Plant/genetics
- Seasons
- Sequence Analysis; DNA/methods
- Transcription; Genetic/*genetics
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Andersson, Ander ...
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Keskitalo, Johan ...
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Sjödin, Andreas
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Bhalerao, Rupali
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Sterky, Fredrik
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Wissel, Kirsten
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show more...
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Tandre, Karolina
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Aspeborg, Henrik
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Moyle, Richard
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Ohmiya, Yasunori
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Bhalerao, Rishik ...
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Brunner, Amy
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Gustafsson, Pett ...
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Karlsson, Jan, 1 ...
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Lundeberg, Joaki ...
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Nilsson, Ove
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Sandberg, Göran
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Strauss, Steven
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Sundberg, Björn
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Uhlén, Mathias
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Jansson, Stefan, ...
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Nilsson, Peter
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Industrial Biote ...
- Articles in the publication
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Genome Biology
- By the university
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Umeå University
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Royal Institute of Technology