網站分析程式 Academia Sinica Agricultural Biotechnology Research Center
 
 
FLASH logo
FLASH logo
中文 | HOME | ACADEMIA SINICA | SITEMAP  
ABRC information system  
line

 

NEWS more

line
HIGHLIGHTS
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
Despite the essential role of phosphate (Pi) in plant growth and development, how plants sense and signal the change of Pi supply to adjust its uptake and utilization is not yet well understood. Pi itself has been proposed to be a signaling molecule that regulates Pi starvation responses (PSRs) because phosphite (Phi), a non-metabolized Pi analog, suppresses several PSRs. In this study, we identified a phosphite-insensitive1 (phi1) mutant which retained anthocyanin, a visible PSR, in Phi-containing but Pi-deficient medium. phi1 mutants were impaired in the gene encoding an FAd subunit of mitochondrial F1Fo-ATP synthase and showed a reduced mitochondrial ATP level in roots, growth hypersensitivity to oligomycin and an increased mitochondrial membrane potential, suggesting that this gene has a crucial role in mitochondrial ATP synthesis. phi1 mutants accumulated a high level of sugars in shoots, which may account for the increased accumulation of anthocyanin and starch in Phi-containing conditions. Gene expression analysis showed that a subset of genes involved in carbohydrate metabolism in phi1 was misregulated in response to Phi. The majority of genes were repressed by Pi starvation and, unlike wild-type plants, their repression in phi1 was not affected by the addition of Phi. Our findings show that defective mitochondrial ATP synthesis results in sugar accumulation, leading to alteration of Phi-mediated suppression of PSRs. This study reinforces the role of sugars, and also reveals a cross-talk among ATP, sugars and Pi/Phi molecules in mediating PSRs. link

PHOTOS more

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

SEMINAR more

*2018/11/19 10:30 AM
Dr. Chiao-Chun Liao (Dr.Shu-Mei Liang’s Lab)
The role of autophagy on the regulation of cells migration and ovarian cancer progression (ABRC Young Scientist Forum)
Auditorium A134, Agricultural Technology Building, Agricultural Biotechnology Research Center

*2018/12/03 10:30 AM
Dr. Choun-Sea Lin (Research Specialist, Agricultural Biotechnology Research Center, Academia Sinica, Taiwan)
2015-2018植物技術核心實驗室服務及研究進度報告
Auditorium A134, Agricultural Technology Building, Agricultural Biotechnology Research Center

JOB OPENING more

ADMINISTRATIVE RESOURCES


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)

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

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

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

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

Emerging studies have implicated a close link between inositol phosphate (InsP) metabolism and cellular phosphate (Pi) homeostasis in eukaryotes; however, whether a common InsP species is deployed as an evolutionarily conserved metabolic messenger to mediate Pi signaling remains unknown. ...more
line
Recommend browser :IE 8.0, Firefox3.0 / 1024x768
No. 128, Sec. 2, Academia Road, Nankang, Taipei, Taiwan 115
TEL: +886-2-2651-5910 FAX: +886-2-2651-5600
Copyright 2010 ABRC, Academia Sinica. All Rights Reserved