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Ming-Jung Liu*, Koichi Sugimoto, Sahra Uygun, Nicholas Panchy, Michael S. Campbell, Mark Yandell, Gregg A. Howe and Shin-Han Shiu* (2018). Regulatory divergence in wound-responsive gene expression between domesticated and wild tomato. Plant Cell DOI: http://www.plantcell.org/content/early/2018/05/09/tpc.18.00194
Background: Two related species accumulate differences between each other over time. If one of the species is domesticated due to human selection of desirable traits, the domesticated species experiences a "bottleneck" where many traits present in the related wild species are lost because only a few individuals are targeted for selection. For example, domesticated tomato has a weaker defense response to wounding and insect feeding compared to wild tomato species that separated from the domesticated tomato ~3-7 million years ago. One of the major reasons for this difference lies with genes that are turned on and off differently due to evolution of short DNA sequences that are like molecular switches.

Question: We wanted to know how wounding leads to different genes being turned on and off in domesticated and wild tomatoes, which DNA sequence "switches" are important for this response, and how these sequence switches differ between species.

Findings: We found that thousands of genes were turned on or off differently in response to wounding between domesticated and wild tomato species. We found hundreds of potential DNA switches associated with this set of genes, and nearly half of them were unique to one species or the other. Our findings indicate a large difference in how these two plant species turn genes on/off in response to wounding; for example this difference is much greater than similar comparisons between human and mouse genes, which were separated from a common ancestor roughly 100 million years ago. link

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2018/10/29 ABRC Seminar

2018/10/18 ABRC Seminar The ABRC 19th Annual Poster Competition 2018 Frontiers in BioAgricultural Research: The 20th Anniversary of the Agricultural Biotechnology Research Center, Academia Sinica

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*2019/03/04 10:30 AM
Dr. Guido Grossmann (Group Leader, the Centre for Organismal Studies (COS) Heidelberg, Heidelberg University, Germany)
TBA
Auditorium A134, Agricultural Technology Building, Agricultural Biotechnology Research Center

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ADMINISTRATIVE RESOURCES


Lin W-Y, Lin Y-Y, Chiang S-F, Syu C, Hsieh L-C*, Chiou T-J* (2018) Evolution of microRNA827 targeting in the plant kingdom. New Phytologist 217: 1712-1725

Kuo, H.-F., Hsu, Y.-Y., Lin, W.-C., Chen, K.-Y., Munnik, T., Brearley, C. A.* and Chiou, T.-J.* (2018) Arabidopsis inositol phosphate kinases, IPK1 and ITPK1, constitute a metabolic pathway in maintaining phosphate homeostasis. The Plant J. (doi:10.1111/tpj.13974)

Hsiang-chin Liu†, Jörn Lämke†, Siou-ying Lin†, Meng-Ju Hung, Kuan-Ming Liu, Yee-yung Charng*, Isabel Bäurle* (2018) Distinct heat shock factors and chromatin modifications mediate the organ-autonomous transcriptional memory of heat stress. Plant J. https://doi.org/10.1111/tpj.13958

Leong, S. J., Lu, W.-C. and Chiou, T.-J.* (2018) Phosphite-Mediated Suppression of Anthocyanin Accumulation Regulated by Mitochondrial ATP Synthesis and Sugar in Arabidopsis. Plant & Cell Physiology 59: 1158-1169

Lin, Y.-C., Wang, J., Delhomme, N., Schiffthaler, B., Sundström, G., Zuccolo, A., Nystedt, B., Hvidsten, T. R., de la Torre, A., Cossu, R. M., Hoeppner, M. P., Lantz, H., Scofield, D. G., Zamani, N., Johansson, A., Mannapperuma, C., Robinson, K. M., Mähler, N., Leitch, I. J., Pellicer, J., Park, E.-J., Van Montagu, M., Van de Peer, Y., Grabherr, M., Jansson, S., Ingvarsson, P. K. and Street, N. R. (2018) Functional and evolutionary genomic inferences in Populus through genome and population sequencing of American and European aspen. PNAS published ahead of print October 29, 2018

Unlike most ancient microRNAs, which conservatively target homologous genes across species, microRNA827 (miR827) targets two different types of SPX (SYG1/PHO81/XPR1)-domain-containing genes, NITROGEN LIMITATION ADAPTATION (NLA) and PHOSPHATE TRANSPORTER 5 (PHT5), in Arabidopsis thaliana and Oryza sativa to regulate phosphate (Pi) transport and storage, respectively. ...more
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