skip to main content

Explore Research Products in the NSF-PAR

  • Home
  • Search Results
  • Page 1 of 1

Search for: All records

Creators/Authors contains: "Eom, Joon‐Seob"

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. ; ; ; ; ; ; ; ; ; ( , New Phytologist)
    Summary

    SWEETs play important roles in intercellular sugar transport. Induction of SWEET sugar transporters by Transcription Activator‐Like effectors (TALe) ofXanthomonasssp. is key for virulence in rice, cassava and cotton.

    We identified OsSWEET11b with roles in male fertility and potential bacterial blight (BB) susceptibility in rice. While singleossweet11aor11bmutants were fertile, double mutants were sterile. As clade III SWEETs can transport gibberellin (GA), a key hormone for spikelet fertility, sterility and BB susceptibility might be explained by GA transport deficiencies. However, in contrast with the Arabidopsis homologues, OsSWEET11b did not mediate detectable GA transport. Fertility and susceptibility therefore are likely to depend on sucrose transport activity.

    Ectopic induction ofOsSWEET11bby designer TALe enabled TALe‐freeXanthomonas oryzaepv.oryzae(Xoo) to cause disease, identifyingOsSWEET11bas a potential BB susceptibility gene and demonstrating that the induction of host sucrose uniporter activity is key to virulence ofXoo. Notably, only three of six clade III SWEETs are targeted by knownXoostrains from Asia and Africa.

    The identification of OsSWEET11b is relevant for fertility and for protecting rice against emergingXoostrains that targetOsSWEET11b.

     
    more » « less
  2. ; ; ; ; ( , New Phytologist)
  3. ; ; ; ; ; ; ; ; ; ; et al ( , The Plant Journal)
    Summary

    Plant breeders have developed crop plants that are resistant to pests, but the continual evolution of pathogens creates the need to iteratively develop new control strategies. Molecular tools have allowed us to gain deep insights into disease responses, allowing for more efficient, rational engineering of crops that are more robust or resistant to a greater number of pathogen variants. Here we describe the roles ofSWEETandSTPtransporters, membrane proteins that mediate transport of sugars across the plasma membrane. We discuss how these transporters may enhance or restrict disease through controlling the level of nutrients provided to pathogens and whether the transporters play a role in sugar signaling for disease resistance. This review indicates open questions that require further research and proposes the use of genome editing technologies for engineering disease resistance.

     
    more » « less