Defects in endoplasmic reticulum-associated degradation (ERAD) increase selenate sensitivity in Arabidopsis

Van Hoewyk D.

PLANT SIGNALING & BEHAVIOR, cilt.13, sa.4, 2018 (SCI-Expanded, Scopus) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 13 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1080/15592324.2016.1171451
  • Dergi Adı: PLANT SIGNALING & BEHAVIOR
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: BiP2, ER, ERAD, protein misfolding, selenium, oxidative stress, UPR, UBIQUITIN-PROTEASOME PATHWAY, MALFORMED SELENOPROTEINS, SELENIUM TOLERANCE, OXIDATIVE STRESS, QUALITY-CONTROL, GLUTATHIONE, TOXICITIES, RESPONSES, PROTEINS, PLANTS
  • Ankara Üniversitesi Adresli: Hayır

Özet

Stress can impair protein folding in the endoplasmic reticulum (ER). Minimizing the accumulation of misfolded proteins in the ER is achieved by ER-associated degradation (ERAD), which involves the retrograde transport and proteasomal removal of aberrant proteins. Recently, the proteasome has been implicated in a selenium stress response. However, it remains unknown if selenium causes ER stress in plants similar to animals, and if ERAD is associated with optimal selenium tolerance. This deficiency was addressed by monitoring selenate-treated Arabidopsis plants with mutations in HRD1 and SeL1L, participants of ERAD. hrd1a/hrd1b and sel1l mutants treated with selenate demonstrate decreased tolerance and ER stress, as judged by BiP2 accumulation. The data indicate that optimal plant growth during selenate stress requires ERAD.