Change search
ReferencesLink to record
Permanent link

Direct link
The AINTEGUMENTA LIKE1 Homeotic Transcription Factor PtAIL1 controls the formation of Adventitious Root Primordia in Poplar
Umeå University, Faculty of Science and Technology, Department of Plant Physiology.
Show others and affiliations
2012 (English)In: Plant Physiology, ISSN 0032-0889, E-ISSN 1532-2548, Vol. 160, no 4, 1996-2006 p.Article in journal (Refereed) Published
Abstract [en]

Adventitious rooting is an essential but sometimes rate-limiting step in the clonal multiplication of elite tree germplasm, because the ability to form roots declines rapidly with age in mature adult plant tissues. In spite of the importance of adventitious rooting, the mechanism behind this developmental process remains poorly understood. We have described the transcriptional profiles that are associated with the developmental stages of adventitious root formation in the model tree poplar (Populus trichocarpa). Transcriptome analyses indicate a highly specific temporal induction of the AINTEGUMENTA LIKE1 (PtAIL1) transcription factor of the AP2 family during adventitious root formation. Transgenic poplar samples that overexpressed PtAIL1 were able to grow an increased number of adventitious roots, whereas RNA interference mediated the down-expression of PtAIL1 expression, which led to a delay in adventitious root formation. Microarray analysis showed that the expression of 15 genes, including the transcription factors AGAMOUS-Like6 and MYB36, was overexpressed in the stem tissues that generated root primordia in PtAIL1-overexpressing plants, whereas their expression was reduced in the RNA interference lines. These results demonstrate that PtAIL1 is a positive regulator of poplar rooting that acts early in the development of adventitious roots.

Place, publisher, year, edition, pages
American Society of Plant Biologists , 2012. Vol. 160, no 4, 1996-2006 p.
National Category
Botany Forest Science
URN: urn:nbn:se:umu:diva-63770DOI: 10.1104/pp.112.204453ISI: 000311998200026OAI: diva2:587581

Published online before print in Plant Physiology, October 2012, doi: http:/​/​dx.​doi.​org/​10.​1104/​pp.​112.204453 med titeln: The Populus AINTEGUMENTA LIKE 1 homeotic transcription factor PtAIL1 controls the formation of adventitious root primordia.​                                 

Available from: 2013-01-14 Created: 2013-01-07 Last updated: 2015-04-29Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Perrone, IreneBellini, Catherine
By organisation
Department of Plant PhysiologyUmeå Plant Science Centre (UPSC)
In the same journal
Plant Physiology
BotanyForest Science

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 170 hits
ReferencesLink to record
Permanent link

Direct link