Transcriptomic response of durum wheat to cold stress at reproductive stage.
Mol Biol Rep
; 46(2): 2427-2445, 2019 Apr.
Article
en En
| MEDLINE
| ID: mdl-30798485
Understanding the genetic basis of cold tolerance is a key step towards obtaining new and improved crop varieties. Current geographical distribution of durum wheat in Argentina exposes the plants to frost damage when spikes have already emerged. Biochemical pathways involved in cold tolerance are known to be early activated at above freezing temperatures. In this study we reported the transcriptome of CBW0101 spring durum wheat by merging data from untreated control and cold (5 °C) treated plant samples at reproductive stage. A total of 128,804 unigenes were predicted. Near 62% of the unigenes were annotated in at least one database. In total 876 unigenes were differentially expressed (DEGs), 562 were up-regulated and 314 down-regulated in treated samples. DEGs are involved in many critical processes including, photosynthetic activity, lipid and carbohydrate synthesis and accumulation of amino acids and seed proteins. Twenty-eight transcription factors (TFs) belonging to 14 families resulted differentially expressed from which eight families comprised of only TFs induced by cold. We also found 31 differentially expressed Long non-coding RNAs (lncRNAs), most of them up-regulated in treated plants. Two of these lncRNAs could operate via microRNAs (miRNAs) target mimic. Our results suggest a reprogramming of expression patterns in CBW0101 that affects a number of genes that is closer to the number reported in winter genotypes. These observations could partially explain its moderate tolerance (low proportion of frost-damaged spikes) when exposed to freezing days in the field.
Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Triticum
/
Respuesta al Choque por Frío
Tipo de estudio:
Prognostic_studies
País/Región como asunto:
America do sul
/
Argentina
Idioma:
En
Revista:
Mol Biol Rep
Año:
2019
Tipo del documento:
Article
País de afiliación:
Argentina