An abscisic acid-responsive protein interaction network for sucrose non-fermenting related kinase1 in abiotic stress response

Commun Biol. 2020 Mar 26;3(1):145. doi: 10.1038/s42003-020-0866-8.

Abstract

Yeast Snf1 (Sucrose non-fermenting1), mammalian AMPK (5' AMP-activated protein kinase) and plant SnRK1 (Snf1-Related Kinase1) are conserved heterotrimeric kinase complexes that re-establish energy homeostasis following stress. The hormone abscisic acid (ABA) plays a crucial role in plant stress response. Activation of SnRK1 or ABA signaling results in overlapping transcriptional changes, suggesting these stress pathways share common targets. To investigate how SnRK1 and ABA interact during stress response in Arabidopsis thaliana, we screened the SnRK1 complex by yeast two-hybrid against a library of proteins encoded by 258 ABA-regulated genes. Here, we identify 125 SnRK1- interacting proteins (SnIPs). Network analysis indicates that a subset of SnIPs form signaling modules in response to abiotic stress. Functional studies show the involvement of SnRK1 and select SnIPs in abiotic stress responses. This targeted study uncovers the largest set of SnRK1 interactors, which can be used to further characterize SnRK1 role in plant survival under stress.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abscisic Acid / metabolism*
  • Arabidopsis / drug effects*
  • Arabidopsis / enzymology
  • Arabidopsis / genetics
  • Arabidopsis Proteins / genetics
  • Arabidopsis Proteins / metabolism*
  • Gene Expression Regulation, Enzymologic
  • Gene Expression Regulation, Plant
  • High-Throughput Nucleotide Sequencing
  • Osmotic Pressure
  • Plants, Genetically Modified / drug effects*
  • Plants, Genetically Modified / enzymology
  • Plants, Genetically Modified / genetics
  • Protein Interaction Maps*
  • Protein Serine-Threonine Kinases / genetics
  • Protein Serine-Threonine Kinases / metabolism*
  • Salt Stress
  • Signal Transduction
  • Sodium Chloride / pharmacology*
  • Sorbitol / pharmacology*
  • Stress, Physiological*
  • Two-Hybrid System Techniques

Substances

  • Arabidopsis Proteins
  • Sodium Chloride
  • Sorbitol
  • Abscisic Acid
  • Protein Serine-Threonine Kinases
  • SnRK1 protein, Arabidopsis