Os11g0528700

The rice gene Os11g0528700 was reported as tld1 in 2009 by researchers from China.

Annotated Information

Gene Symbol

• Os11g0528700 <=> TLD1, OsGH3.13

Function

• TLD1 is a rice GH3.13 gene that encodes indole-3-acetic acid (IAA)-amido synthetase, which is suppressed in aboveground tissues under normal conditions but which is dramatically induced by drought stress.
• The activation of TLD1 reduced the IAA maxima at the lamina joint, shoot base, and nodes, resulting in subsequent alterations in plant architecture and tissue patterning but enhancing drought tolerance.

Mutation

• The tld1-D mutant shows an increased number of tillers, enlarged leaf angles, and dwarfism.
• The decreased level of free IAA in tld1-D due to the conjugation of IAA with amino acids greatly facilitated the accumulation of late-embryogenesis abundant mRNA compared with the wild type.

Expression

• To understand the native roles of TLD1 in rice physiology and development, The researchers analyzed the TLD1 expression pattern under normal conditions. Although TLD1 was expressed in all of the tissues examined, the level of transcription as determined by RT-PCR was low in the aboveground organs but relatively high in the roots

Evolution

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Labs working on this gene

• Institute of Molecular Cell Biology, Hebei Normal University, Shijiazhuang, Hebei, China 050016 (S.-W.Z., C.-H.L., J.C., S.-Q.Z., D.-Y.S., Y.S.);
• Key Laboratory of Hebei Molecular Cell Biology, Shijiazhuang, Hebei, China 050016 (S.-W.Z., S.-Q.Z., D.-Y.S., Y.S.);
• College of Life Science, Hebei Normal University, Shijiazhuang, Hebei, China 050016 (Y.-C.Z., Y.-F.X.)