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National Academy of Sciences, Proceedings of the National Academy of Sciences, 25(98), p. 14732-14737, 2001

DOI: 10.1073/pnas.261293398

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A transcriptional roadmap to wood formation

Journal article published in 2001 by Magnus Hertzberg, Henrik Aspeborg, Jarmo Schrader, Anders Andersson ORCID, Rikard Erlandsson, Kristina Blomqvist, Rupali Bhalerao, Mathias Uhlén, Tuula T. Teeri, Joakim Lundeberg, Bj Sundberg, Peter Nilsson ORCID, Göran Sandberg
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The large vascular meristem of poplar trees with its highly organized secondary xylem enables the boundaries between different developmental zones to be easily distinguished. This property of wood-forming tissues allowed us to determine a unique tissue-specific transcript profile for a well defined developmental gradient. RNA was prepared from different developmental stages of xylogenesis for DNA microarray analysis by using a hybrid aspen unigene set consisting of 2,995 expressed sequence tags. The analysis revealed that the genes encoding lignin and cellulose biosynthetic enzymes, as well as a number of transcription factors and other potential regulators of xylogenesis, are under strict developmental stage-specific transcriptional regulation.