TITLE

Long and short photoperiod buds in hybrid aspen share structural development and expression patterns of marker genes

AUTHOR(S)
Rinne, Päivi L. H.; Paul, Laju K.; Vahala, Jorma; Ruonala, Raili; Kangasjärvi, Jaakko; van der Schoot, Christiaan
PUB. DATE
November 2015
SOURCE
Journal of Experimental Botany;Nov2015, Vol. 66 Issue 21, p6745
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Tree architecture develops over time through the collective activity of apical and axillary meristems. Although the capacity of both meristems to form buds is crucial for perennial life, a comparative analysis is lacking. As shown here for hybrid aspen, axillary meristems engage in an elaborate process of axillary bud (AXB) formation, while apical dominance prevents outgrowth of branches. Development ceased when AXBs had formed an embryonic shoot (ES) with a predictable number of embryonic leaves at the bud maturation point (BMP). Under short days, terminal buds (TBs) formed an ES similar to that of AXBs, and both the TB and young AXBs above the BMP established dormancy. Quantitative PCR and in situ hybridizations showed that this shared ability and structural similarity was reflected at the molecular level. TBs and AXBs similarly regulated expression of meristem-specific and bud/branching-related genes, including CENTRORADIALIS-LIKE1 (CENL1), BRANCHED1 (BRC1), BRC2, and the strigolactone biosynthesis gene MORE AXILLARY BRANCHES1 (MAX1). Below the BMP, AXBs maintained high CENL1 expression at the rib meristem, suggesting that it serves to maintain poise for growth. In support of this, decapitation initiated outgrowth of CENL1-expressing AXBs, but not of dormant AXBs that had switched CENL1 off. This singles out CENL1 as a rib meristem marker for para-dormancy. BRC1 and MAX1 genes, which may counterbalance CENL1, were down-regulated in decapitation-activated AXBs. The results showed that removal of apical dominance shifted AXB gene expression toward that of apices, while developing TBs adopted the expression pattern of para-dormant AXBs. Bud development thus follows a shared developmental pattern at terminal and axillary positions, despite being triggered by short days and apical dominance, respectively.
ACCESSION #
110617500

 

Related Articles

  • A theoretical and practical analysis of the optimum breeding system for perennial ryegrass. Conaghan, R.; Casler, M. D. // Irish Journal of Agricultural & Food Research;2011, Vol. 50 Issue 1, p47 

    The goal of plant breeding is to effectively and efficiently select for the best phenotypes leading to the development of improved cultivars. The objectives for this review are to describe and critically evaluate breeding methods appropriate to the improvement of perennial ryegrass (Lolium...

  • Development of EST-derived markers in Dendrobium from EST of related taxa. Juejun, Narisa; Chataporn Chunwongse; Julapark Chunwongse // Songklanakarin Journal of Science & Technology;Mar/Apr2013, Vol. 35 Issue 2, p149 

    Public databases are useful for molecular marker development. The major aim of this study was to develop expressed sequence tag (EST)-derived markers in Dendrobium from available ESTs of Phalaenopsis and Dendrobium. A total of 6063 sequences were screened for simple sequence repeats (SSRs) and...

  • Novel aspects of transcriptional regulation in the winter survival and maintenance mechanism of poplar. Ko, Jae-Heung; Prassinos, Constantinos; Keathley, Daniel; Han, Kyung-Hwan // Tree Physiology;Feb2011, Vol. 31 Issue 2, p208 

    Temperate woody plants have developed sophisticated winter survival and maintenance mechanisms that enable them to adapt rapidly to the annual cycle of environmental changes. Here, we demonstrate notable aspects of the transcriptional regulation adopted by poplar in winter/dormancy, employing...

  • Arabidopsis thaliana DOF6 negatively affects germination in non-after-ripened seeds and interacts with TCP14. Rueda-Romero, Paloma; Barrero-Sicilia, Cristina; Gómez-Cadenas, Aurelio; Carbonero, Pilar; Oñate-Sánchez, Luis // Journal of Experimental Botany;May2012, Vol. 63 Issue 5, p1937 

    Seed dormancy prevents seeds from germinating under environmental conditions unfavourable for plant growth and development and constitutes an evolutionary advantage. Dry storage, also known as after-ripening, gradually decreases seed dormancy by mechanisms not well understood. An Arabidopsis...

  • Overexpression of the kiwifruit SVP3 gene affects reproductive development and suppresses anthocyanin biosynthesis in petals, but has no effect on vegetative growth, dormancy, or flowering time. Wu, Rongmei; Wang, Tianchi; McGie, Tony; Voogd, Charlotte; Allan, Andrew C.; Hellens, Roger P.; Varkonyi-Gasic, Erika // Journal of Experimental Botany;Sep2014, Vol. 65 Issue 17, p4985 

    Overexpression of SVP3 affects kiwifruit flower and fruit development. The reduced petal pigmentation results from interference with transcription of the kiwifruit flower tissue-specific R2R3 MYB regulator.SVP-like MADS domain transcription factors have been shown to regulate flowering time and...

  • Gibberellin as a factor in floral regulatory networks. Mutasa-Göttgens, Effie; Hedden, Peter // Journal of Experimental Botany;May2009, Vol. 60 Issue 7, p1979 

    Gibberellins (GAs) function not only to promote the growth of plant organs, but also to induce phase transitions during development. Their involvement in flower initiation in long-day (LD) and biennial plants is well established and there is growing insight into the mechanisms by which floral...

  • Organization of chloroplast psbA- trnH intergenic spacer in dicotyledonous angiosperms of the family umbelliferae. Degtjareva, G.; Logacheva, M.; Samigullin, T.; Terentieva, E.; Valiejo-Roman, C. // Biochemistry (00062979);Sep2012, Vol. 77 Issue 9, p1056 

    Chloroplast intergenic psbA- trnH spacer has recently become a popular tool in plant molecular phylogenetic studies at low taxonomic level and as suitable for DNA barcoding studies. In present work, we studied the organization of psbA- trnH in the large family Umbelliferae and its potential as a...

  • Expression of the Algal Cytochrome c6 Gene in Arabidopsis Enhances Photosynthesis and Growth. Hirotaka Chida; Aiko Nakazawa; Hideharu Akazaki; Takako Hirano; Kohei Suruga; Masahiro Ogawa; Tadashi Satoh; Kazunari Kadokura; Seiji Yamada; Wataru Hakamata; Katsunori Isobe; Tei-ichiro Ito; Ryuichi Ishii; Toshiyuki Nishio; Kintake Sonoike; Tadatake Oku // Plant & Cell Physiology;Jul2007, Vol. 48 Issue 7, p948 

    Photosynthetic plants convert light energy into ATP and NADPH in photosynthetic electron transfer and photophosphorylation, and synthesize mainly carbohydrates in the Calvin–Benson cycle. Here we report the enhancement of photosynthesis and growth of plants by introducing the gene...

  • Expression profiles of a CONSTANS homologue GmCOL11 in Glycine max. Jiang, Y.; Han, Y.; Zhang, X. // Russian Journal of Plant Physiology;Sep2011, Vol. 58 Issue 5, p928 

    Soybean ( Glycine max L.) is a typical short-day crop, and its flowering is strictly restricted by specific photoperiod conditions. CONSTANS ( CO) plays a pivotal role in the photoperiod pathway of flowering regulation. CO-like genes are present in many plant species. Here we describe the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics