Genome-wide identification and characterization of ABA receptor pyrabactin resistance 1-like protein (PYL) family in oat

PeerJ. 2023 Oct 2:11:e16181. doi: 10.7717/peerj.16181. eCollection 2023.

Abstract

Abscisic acid (ABA) is a phytohormone that plays an important role in plant growth and development. Meanwhile, ABA also plays a key role in the plant response to abiotic stressors such as drought and high salinity. The pyrabactin resistance 1-like (PYR/PYL) protein family of ABA receptors is involved in the initial step of ABA signal transduction. However, no systematic studies of the PYL family in "Avena sativa, a genus Avena in the grass family Poaceae," have been conducted to date. Thus, in this study, we performed a genome-wide screening to identify PYL genes in oat and characterized their responses to drought stress. A total of 12 AsPYL genes distributed on nine chromosomes were identified. The phylogenetic analysis divided these AsPYLs into three subfamilies, based on structural and functional similarities. Gene and motif structure analysis of AsPYLs revealed that members of each subfamily share similar gene and motif structure. Segmental duplication appears to be the driving force for the expansion of PYLs, Furthermore, stress-responsive AsPYLs were detected through RNA-seq analysis. The qRT-PCR analysis of 10 AsPYL genes under drought, salt, and ABA stress revealed that AsPYL genes play an important role in stress response. These data provide a reference for further studies on the oat PYL gene family and its function.

Keywords: Avena sativa L.; Expression patterns; Genome-wide; PYL family.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abscisic Acid / metabolism
  • Arabidopsis Proteins* / genetics
  • Arabidopsis* / genetics
  • Avena / genetics
  • Carrier Proteins / genetics
  • Phylogeny

Substances

  • Abscisic Acid
  • Arabidopsis Proteins
  • pyrabactin
  • Carrier Proteins

Grants and funding

This work was supported by the Key Laboratory of Superior Forage Germplasm in the Qinghai–Tibetan Plateau (2020–ZJ–Y03) and the China Agriculture Research System (CARS-34). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.