Téléchargement | |
---|
DOI | Trouver le DOI : https://doi.org/10.1002/pei3.10044 |
---|
Auteur | Rechercher : Li, Qiang1Identifiant ORCID : https://orcid.org/0000-0003-0705-2850; Rechercher : Shen, Wenyun1; Rechercher : Mavraganis, Ioannis1; Rechercher : Wang, Liping1; Rechercher : Gao, Peng1Identifiant ORCID : https://orcid.org/0000-0002-6586-4307; Rechercher : Gao, Jie; Rechercher : Cram, Dustin1; Rechercher : Li, Yifeng2; Rechercher : Liu, Ziying2; Rechercher : Fowler, David Brian; Rechercher : Pan, Youlian2Identifiant ORCID : https://orcid.org/0000-0002-0158-0081; Rechercher : Zou, Jitao1 |
---|
Affiliation | - Conseil national de recherches du Canada. Développement des cultures et des ressources aquatiques
- Conseil national de recherches du Canada. Technologies numériques
|
---|
Format | Texte, Article |
---|
Sujet | wheat; phosphatidylglycerol; trans‐16:1; cold acclimation |
---|
Résumé | In plant cells, phosphatidylglycerol (PG) in the chloroplast has a characteristic trans-∆3-hexadecenoic acid (t16:1) at the sn-2 position. The t16:1 content in wheat leaf tissues decreases during cold treatment, but the significance of this fatty acid compositional change and the underlying biochemical mechanism remains poorly understood. Using a large collection of wheat cultivars displaying a varying capacity of freezing tolerance, we show for the first time under field conditions that this low temperature induced t16:1 change is associated with winter hardiness. To explore the metabolic mechanism responsible for the reduction of t16:1, we performed detailed lipid analysis and comparative transcriptome study with four selected wheat lines under cold acclimation. Our results show that wheat leaf tissues experience a gradual decrease in chloroplast lipid pathway activity during cold acclimation and that the decline in chloroplast lipid synthesis manifests itself in the decrease of t16:1 in PG. Comparative RNA-seq analyses with leaf tissues further reveal concerted transcriptome shifts indicating a rebalancing of chloroplast and cytosolic lipid synthesis during cold acclimation. Our study, thus, provides mechanistic understanding on chloroplast lipid adjustments as a “molecular ideotype” and the t16:1 change as a specific metabolite marker for screening freezing tolerance in wheat. |
---|
Date de publication | 2021-05-17 |
---|
Maison d’édition | Wiley New Phytologist Foundation |
---|
Licence | |
---|
Dans | |
---|
Langue | anglais |
---|
Publications évaluées par des pairs | Oui |
---|
Numéro du CNRC | NRC-ACRD-PDB0121 |
---|
Exporter la notice | Exporter en format RIS |
---|
Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
---|
Identificateur de l’enregistrement | a92c9547-bf45-4911-a384-b9cc758bd6b0 |
---|
Enregistrement créé | 2021-05-18 |
---|
Enregistrement modifié | 2022-08-15 |
---|