Os09g0513000

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Annotated Information

Gene Symbol

• Os09g0513000 <=> OsXB25,XB25

Figure 6. XB25 is induced by Xoo infection in an Xa21-indpendent manner..

Function

• The XA21 binding protein XB25 is required for maintaining XA21-mediated disease resistance.
• XB25 physically interacts, in vitro, with the transmembrane domain of XA21 through its N–terminal binding to transmembrane and positively charged domain (BTMP) repeats. In addition, XB25 associates with XA21 in planta.
• The downregulation of Xb25 results in reduced levels of XA21 and compromised XA21-mediated disease resistance at the adult stage.
• XB25 is required for maintaining XA21-mediated disease resistance.

Expression

• Xoo infection can alter the expression of a large number of rice genes.
• The researchers monitored Xb25 transcript levels and the XB25 abundance in both TP309 and the XA21-expressing line 4021–3 after PXO99 A inoculation.
• As shown in Figure 6, both RNA transcript and protein levels of XB25 are increased 12 h after inoculation in both TP309 and 4021–3 lines, indicating that the expression of Xb25 is induced by pathogen inoculation in an Xa21-inde-pendent manner. This elevated expression continues for at least 3 days.

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Labs working on this gene

• Department of Plant Pathology, University of Florida, Gainesville, FL 32611, USA
• Integrated Plant Genetics, Inc, Alachua, FL 32608, USA.
• UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390, USA.
• Department of Microbiology, University of Florida, Gainesville, FL 32611, USA.