Molecular characterization and expression of four aquaporin genes in Impatiens walleriana during drought stress and recovery
2021
Autori:
Đurić, MarijaSubotić, Angelina
Prokić, Ljiljana
Trifunović-Momčilov, Milana
Cingel, Aleksandar
Dragićević, Milan
Simonović, Ana
Milošević, Snežana
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
Aquaporins comprise a large group of transmembrane proteins responsible for water
transport, which is crucial for plant survival under stress conditions. Despite the vital role of aquaporins,
nothing is known about this protein family in Impatiens walleriana, a commercially important
horticultural plant, which is sensitive to drought stress. In the present study, attention is given to
the molecular characterization of aquaporins in I. walleriana and their expression during drought
stress and recovery. We identified four I. walleriana aquaporins: IwPIP1;4, IwPIP2;2, IwPIP2;7 and
IwTIP4;1. All of them had conserved NPA motifs (Asparagine-Proline-Alanine), transmembrane
helices (TMh), pore characteristics, stereochemical properties and tetrameric structure of holoprotein.
Drought stress and recovery treatment affected the aquaporins expression in I. walleriana
leaves, which was up- or downregulated depending on stress intensity. Expression of IwPIP2;7 was
the most affected of all analyzed I. walleriana aquaporins. At 15% and 5% soil moisture and recovery
from 15% and 5% soil moisture, IwPIP2;7 expression significantly decreased and increased, respectively.
Aquaporins IwPIP1;4 and IwTIP4;1 had lower expression in comparison to IwPIP2;7, with
moderate expression changes in response to drought and recovery, while IwPIP2;2 expression was
of significance only in recovered plants. Insight into the molecular structure of I. walleriana aquaporins
expanded knowledge about plant aquaporins, while its expression during drought and recovery
contributed to I. walleriana drought tolerance mechanisms and re-acclimation.
Ključne reči:
Water relations; Aquaporins; Molecular structure; Drought stress; Gene expressionIzvor:
Plants, 2021, 10, 1, 154-Finansiranje / projekti:
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200007 (Univerzitet u Beogradu, Institut za biološka istraživanja 'Siniša Stanković') (RS-MESTD-inst-2020-200007)
- Ministarstvo nauke, tehnološkog razvoja i inovacija Republike Srbije, institucionalno finansiranje - 200116 (Univerzitet u Beogradu, Poljoprivredni fakultet) (RS-MESTD-inst-2020-200116)
DOI: 10.3390/plants10010154
ISSN: 2223-7747
PubMed: 33466920