Publications

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Dong, J, MacAlister CA, Bergmann DC.  2009.  BASL controls asymmetric cell division in Arabidopsis.. Cell. 137(7):1320-1330.
Dong, J.  2010.  Stomatal patterning and development.. Curr Top Dev Biol.. 91:267-97.
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Ge, Z, Bergonci T, Zhao Y, Zou Y, Du S, Liu M-C, Luo X, Ruan H, García-Valencia LE, Zhong S et al..  2017.  <em>Arabidopsis</em> pollen tube integrity and sperm release are regulated by RALF-mediated signaling. Science. 358(6370):1596. AbstractWebsite
In plants, sperm cells travel through the pollen tube as it grows toward the ovule. Successful fertilization depends on the pollen tube rupturing to release the sperm cells (see the Perspective by Stegmann and Zipfel). Ge et al. and Mecchia et al. elucidated the intercellular cross-talk that maintains pollen tube integrity during growth but destroys it at just the right moment. The signaling peptides RALF4 and RALF19, derived from the pollen tube, maintain its integrity as it grows. Once in reach of the ovule, a related signaling peptide, RALF34, which derives from female tissues, takes over and causes rupture of the pollen tube.Science, this issue p. 1596, p. 1600; see also p. 1544In flowering plants, fertilization requires complex cell-to-cell communication events between the pollen tube and the female reproductive tissues, which are controlled by extracellular signaling molecules interacting with receptors at the pollen tube surface. We found that two such receptors in Arabidopsis, BUPS1 and BUPS2, and their peptide ligands, RALF4 and RALF19, are pollen tube–expressed and are required to maintain pollen tube integrity. BUPS1 and BUPS2 interact with receptors ANXUR1 and ANXUR2 via their ectodomains, and both sets of receptors bind RALF4 and RALF19. These receptor-ligand interactions are in competition with the female-derived ligand RALF34, which induces pollen tube bursting at nanomolar concentrations. We propose that RALF34 replaces RALF4 and RALF19 at the interface of pollen tube–female gametophyte contact, thereby deregulating BUPS-ANXUR signaling and in turn leading to pollen tube rupture and sperm release.
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Hou, Y, Guo X, Cyprys P, Zhang Y, Bleckmann A, Cai L, Huang Q, Luo Y, Gu H, Dresselhaus T et al..  2016.  Maternal ENODLs Are Required for Pollen Tube Reception in Arabidopsis.. Curr. Biol.. doi:10.1016/j.cub.2016.06.053
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Luo, C, Dong J, Zhang Y, Lam E.  2014.  Decoding the role of chromatin architecture in development: coming closer to the end of the tunnel.. Frontiers in Plant Science. 5 AbstractWebsite
Form and function in biology are intimately related aspects that are often difficult to untangle. While the structural aspects of chromatin organization were apparent from early cytological observations long before the molecular details of chromatin functions were deciphered, the extent to which genome architecture may impact its output remains unclear. A major roadblock to resolve this issue is the divergent scales, both temporal and spatial, of the experimental approaches for examining these facets of chromatin biology. Recent advances in high-throughput sequencing and informatics to model and monitor genome-wide chromatin contact sites provide the much-needed platform to close this gap. This mini-review will focus on discussing recent efforts applying new technologies to elucidate the roles of genome architecture in coordinating global gene expression output. Our discussion will emphasize the potential roles of differential genome 3-D structure as a driver for cell fate specification of multicellular organisms. An integrated approach that combines multiple new methodologies may finally have the necessary temporal and spatial resolution to provide clarity on the roles of chromatin architecture during development.
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Pillitteri, LJ, Guo X, Dong J.  2016.  Asymmetric cell division in plants: mechanisms of symmetry breaking and cell fate determination.. Cellular and Molecular Life Sciences. DOI 10.1007/s00018-016-2290-2
Pillitteri LJ, DJ.  2013.  Stomatal development in Arabidopsis.. Arabidopsis Book. :10.1199/tab.0162.
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Shao, W, Dong J.  2016.  Polarity in plant asymmetric cell division: Division orientation and cell fate differentiation.. Dev. Biol.. doi:10.1016/j.ydbio.2016.07.020
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Yamamuro, C, Miki D, Zheng Z, Wang J, Dong J, Zhu JK.  2014.  Overproduction of stomatal lineage cells in Arabidopsis mutants defective in active DNA demethylation.. Nature Commun.. 5(5):4062.
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Zhang, Y, Bergmann DC, Dong J.  2016.  Fine-scale dissection of the subdomains of polarity protein BASL in stomatal asymmetric cell division.. J. Exp. Bot.. doi:10.1093/jxb/erw274
Zhang, Y, Guo X, Dong J.  2016.  Phosphorylation of the Polarity Protein BASL Differentiates Asymmetric Cell Fate through MAPKs and SPCH. Current Biology. 26(21):2957-2965.Website
Zhang, Y, Wang P, Shao W, Zhu J-K, Dong J.  2015.  The BASL Polarity Protein Controls a MAPK Signaling Feedback Loop in Asymmetric Cell Division.. Dev Cell. doi: 10.1016/j.devcel.2015.02.022.
Zhao, C, Wang P, Si T, Hsu C-C, Wang L, Zayed O, Yu Z, Zhu Y, Dong J, Tao AW et al..  2017.  MAP Kinase Cascades Regulate the Cold Response by Modulating ICE1 Protein Stability. Developmental Cell. 42:1-12.Website