Tie Liu Stanford University
155 protocols

Xiaoqing Qu
  • Editor, Bio-protocol
Research focus
  • Plant science
  • 0 Author merit


Ph.D. in Plant Biology, Postgraduate Study Abroad Program supported by China Scholarship Council, China Agricultural University and Carnegie Institution for Science, Stanford, 2012


  1. Eom, J. S., Chen, L. Q., Sosso, D., Julius, B. T., Lin, I. W., Qu, X. Q., Braun, D. M. and Frommer, W. B. (2015). SWEETs, transporters for intracellular and intercellular sugar translocation. Curr Opin Plant Biol 25: 53-62. 
  2. Chen, L. Q., Lin, I. W., Qu, X. Q., Sosso, D., McFarlane, H. E., Londono, A., Samuels, A. L. and Frommer, W. B. (2015). A cascade of sequentially expressed sucrose transporters in the seed coat and endosperm provides nutrition for the Arabidopsis embryo. Plant Cell 27(3): 607-619.

  3. Lin, I. W., Sosso, D., Chen, L. Q., Gase, K., Kim, S. G., Kessler, D., Klinkenberg, P. M., Gorder, M. K., Hou, B. H., Qu, X. Q., Carter, C. J., Baldwin, I. T. and Frommer, W. B. (2014). Nectar secretion requires sucrose phosphate synthases and the sugar transporter SWEET9. Nature 508(7497): 546-549.

  4. Chen, L. Q.*, Qu, X. Q.*, Hou, B. H., Sosso, D., Osorio, S., Fernie, A. R. and Frommer, W. B. (2012). Sucrose efflux mediated by SWEET proteins as a key step for phloem transport. Science 335(6065): 207-211. (*Co-first author)

  5. Hou, B. H., Takanaga, H., Grossmann, G., Chen, L. Q., Qu, X. Q., Jones, A. M., Lalonde, S., Schweissgut, O., Wiechert, W. and Frommer, W. B. (2011). Optical sensors for monitoring dynamic changes of intracellular metabolite levels in mammalian cells. Nat Protoc 6(11): 1818-1833.

  6. Chen, L. Q., Hou, B. H., Lalonde, S., Takanaga, H., Hartung, M. L., Qu, X. Q., Guo, W. J., Kim, J. G., Underwood, W., Chaudhuri, B., Chermak, D., Antony, G., White, F. F., Somerville, S. C., Mudgett, M. B. and Frommer, W. B. (2010). Sugar transporters for intercellular exchange and nutrition of pathogens. Nature 468(7323): 527-532.

3 Protocols reviewed
Measuring Arabidopsis, Tomato and Barley Leaf Relative Water Content (RWC)
Authors:  Nir Sade, Eyal Galkin and Menachem Moshelion, date: 04/20/2015, view: 4791, Q&A: 0
Measuring leaf relative water content (RWC) is a reliable and simple way to assess the water status of a leaf without any need for special equipment. Similar to leaf water potential, leaf RWC gives a strong indication of the plant’s response to ...
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Determination of Soluble Sugars in Arabidopsis thaliana Leaves by Anion Exchange Chromatography
Authors:  M. Isabel Ortiz-Marchena, M. Teresa Ruiz, Federico Valverde and José M. Romero, date: 12/05/2014, view: 6462, Q&A: 0
Determination of soluble sugars is basic for the study of carbon metabolism in plants. Soluble sugar quantitation can be achieved by enzymatic methods implying different coupled reactions. Here we describe a simple method that allows rapid ...
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