4.7 Article

Expression Patterns and Functional Analysis of 11 E3 Ubiquitin Ligase Genes in Rice

Journal

FRONTIERS IN PLANT SCIENCE
Volume 13, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fpls.2022.840360

Keywords

rice; E3 ubiquitin ligases; biotic stress; abiotic stress; ROS; expression patterns

Categories

Funding

  1. Taizhou Municipal Science and Technology Project [20ny18]
  2. Science Foundation for Distinguished Young Scholars of Taizhou University [2019JQ001]
  3. Zhejiang Provincial Natural Science Foundation of China [LQ20C130005]

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Research identified that E3 ubiquitin ligase genes in rice are affected by various stress treatments and may confer resistance against M. grisea through regulating ROS accumulation and defense gene expression levels.
E3 ubiquitin ligases are involved in many processes, regulating the response to biotic and abiotic stresses. In this study, 11 E3 ubiquitin ligase genes from Arabidopsis, which were hypothesized to function in response to biotic or abiotic stresses were selected, and the homologous genes in rice were found. Their functions were analyzed in rice. These 11 E3 ubiquitin ligase genes showed different patterns of expression under different treatments. The BMV:OsPUB39-infiltrated seedlings showed decreased resistance to Magnaporthe grisea (M. grisea) when compared with BMV:00-infiltrated seedlings, whereas the BMV:OsPUB34- and BMV:OsPUB33-infiltrated seedlings showed increased resistance. The involvement of these genes in the resistance against M. grisea may be attributed to the regulation of the accumulation of reactive oxygen species (ROS) and expression levels of defense-related genes. Seedlings infiltrated by BMV:OsATL69 showed decreased tolerance to drought stress, whereas BMV:OsPUB33-infiltraed seedlings showed increased tolerance, possibly through the regulation of proline content, sugar content, and expression of drought-responsive genes. BMV:OsATL32-infiltrated seedlings showed decreased tolerance to cold stress by regulating malondialdehyde (MDA) content and the expression of cold-responsive genes.

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