2203 LIFE SCIENCES
Telephone: (530) 754-8139
FAX: (530) 752-5410
Our laboratory is located in room 2203 of the Life Sciences building. Our team works on how plant and fungal cells organize their cytoplasmic contents. We use microscopic and imaging tools to watch how cells divide and enlarge themselves. People in the laboratory also routinely carry out experiments of protein biochemistry, molecular biology, as well as classical and molecular genetics. We have open positions for graduate students and undergraduate students. If you are interested in traveling into plant and fungal cells, please contact Dr. Bo Liu, the principal investigator, at firstname.lastname@example.org. You are invited to visit the laboratory or talk to Dr. Liu at (530) 754-8138. Recent results are summarized in the posters presented outside the laboratory.
People in the Laboratory:
Dedicated Graduate Students:
Miss Cui Jing Tracy Zeng (B.S., University of California-Davis)
Determined postdoctoral and visiting scientists:
Dr. Yuh-Ru Julie Lee (Ph.D., University of Georgia, Athens, GA)
Dr. Baojuan Sun (Ph.D., Zhejiang University, Hangzhou, China. Professor, Guangdong Academy of Agricultural Sciences, Guangzhou, China)
Dr. Aviah Zilberstein (Professor, Tel Aviv University, Tel Aviv, Israel)
Dependable undergraduate students:
Mr. Yimeng He
Miss Genevieve Puccinelli
Miss Connie Tan
A Picture from Our Experiments:
This is a rice cell undergoing cell division. Daughter nuclei were labeled in blue, microtubules in red, and one of our favorite kinesins (a class of motor proteins) in green. This OsPAKRP1 kinesin (or OsKinesin-12A) was discovered in 2203 LSA in 2000.
An Example of the Organisms We Are Working On:
These are images of colonies of the filamentous fungus Aspergillus nidulans. This fungus is one of the model organisms used for classical genetic studies of fundamental biological processes like the cell cycle. The yellow color was given by the asexual conidial spores produced on the surface of the colonies. The images were taken from identical plates incubated at different temperatures indicated on the left. The strain to the left was a control one which demonstrated a typical growth phenomenon. The middle and right ones were mutants which had problems in nuclear migration. It has been demonstrated by many scientists that the mechanism for nuclear migration in this fungus is very similar to that regulating nuclear migration during fertilization and in brain development in mammals.
Lee, Y.-R.J., Y. Li, and B. Liu. 2007. Two homologous phragmoplast-associated kinesins play a critical role in cytokinesis during male gametogenesis in Arabidopsis. Plant Cell. 19:2595-2605.
Bisgrove S.R., Y.-R. J. Lee, B. Liu, N. Peters, and D.L. Kropf. 2008. The microtubule plus-end binding protein EB1 functions in root responses to touch and gravity signals in Arabidopsis. Plant Cell. 20:396–410.
Guo*, L., C.-M. Ho*, Z. Kong*, Y.-R.J. Lee*, Q. Qian, and B. Liu. 2009. Evaluating the microtubule cytoskeleton and its interacting proteins in monocots by mining the rice genome. Annals Bot. 103: 387–402. (* equal contributions)
Kim, J.-M., C.T. Zeng, T. Nayak, R. Shao, A. Huang, B.R. Oakley, and B. Liu. 2009. Timely septation requires SNAD-dependent spindle pole body localization of the septation initiation network components in the filamentous fungus Aspergillus nidulans. Mol. Biol. Cell. 20:2874–2884.
Zeng, C.T., Y.-R.J. Lee, and Liu, B. 2009. The WD-40 repeat protein NEDD1 functions in microtubule organization during cell division in Arabidopsis thaliana. Plant Cell. 21:1129–1140.
Kong, Z., T. Hotta, Y.-R.J. Lee, T. Horio, and B. Liu. 2010. The γ-tubulin complex protein GCP4 is required for organizing functional microtubule arrays in Arabidopsis thaliana. Plant Cell. 22:191–204.
Liu, B., T. Hotta, C.-M.K. Ho, and Y.-R.J. Lee. 2011. Microtubule organization in the phragmoplast. In The Plant Cytoskeleton, Advances in Plant Biology 2, B. Liu (ed.). Springer, New York. Pp 207-225.
Liu, B., C.-M. K. Ho, and Y.-R.J. Lee. 2011. Microtubule reorganization during mitosis and cytokinesis: lessons learned from developing microgametophytes in Arabidopsis thaliana. Front. Plant Sci. 2:27. doi: 10.3389/fpls.2011.00027
Ho*, C.-M.K., T. Hotta*, Z. Kong*, C.T. Zeng*, J. Sun, Y.-R.J. Lee, and B. Liu. 2011. Augmin plays a critical role in organizing the spindle and phragmoplast microtubule arrays in Arabidopsis. Plant Cell. 23:2606–2618. (* equal contributions)
Ho, C.-M.K., T. Hotta, F. Guo, R. Roberson, Y.-R.J. Lee, and B. Liu. 2011. Interaction of anti-parallel microtubules in the phragmoplast is mediated by the microtubule-associated protein MAP65-3 in Arabidopsis. Plant Cell. 23:2909–2923.
Hotta, T., Z. Kong, C.M.K. Ho, C.J.T. Zeng, T. Horio, S. Fong, T. Vuong, Y.R.J. Lee, and B. Liu. 2012. Characterization of the Arabidopsis augmin complex uncovers its critical function in the assembly of the acentrosomal spindle and phragmoplast microtubule arrays. Plant Cell. 24:1494-1509.
Ho, C.-M.K., Y.R.J. Lee, L.D. Kiyama, S.P. Dinesh-Kumar, and B. Liu. 2012. Arabidopsis microtubule-associated protein MAP65-3 cross-links anti-parallel microtubules toward their plus ends in the phragmoplast via its distinct C-terminal microtubule-binding domain. Plant Cell. 24:2071-2085.