Phosphorylation of bip130 by OsMPK1 regulates abscisic acid-induced antioxidant defense in rice.

In rice (Oryza sativa), the mitogen-activated protein kinase 1, OsMPK1, has been shown to play an important role in abscisic acid (ABA)-induced antioxidant defense and to enhance the tolerance of plants to drought, salinity and oxidative stress. However, its downstream molecular mechanisms are poorly understood. Here, we identified a BRI1-KD interacting protein 130, bip130, which interacts with OsMPK1 in vitro and in vivo. A transient expression analysis in combination with mutant analysis in rice protoplasts revealed that bip130 is required for ABA-induced antioxidant defense in an OsMPK1-dependent manner. Furthermore, bip130 can be phosphorylated by OsMPK1 at Thr-153 in vitro, and Thr-153 is essential for the ABA-induced antioxidant defense by OsMPK1. These results reveal that OsMPK1 phosphorylates bip130 at Thr-153 to regulate ABA-induced antioxidant defense.

• Publication year

  2019

• Venue

  Biochemical and Biophysical Research Communications - BBRC

• Publication date

  2019-06-30

• Fields of study

  Biology, Medicine, Chemistry, Environmental Science

• Identifiers
  DOI 10.1016/j.bbrc.2019.04.183PMID 31078272
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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