NDLI: Multilevel regulation and signalling processes associated with adaptation to terminal drought in wild emmer wheat

Content Provider	Springer Nature Link
Author	Krugman, Tamar Chagué, Véronique Peleg, Zvi Balzergue, Sandrine Just, Jérémy Korol, Abraham B. Nevo, Eviatar Saranga, Yehoshua Chalhoub, Boulos Fahima, Tzion
Copyright Year	2010
Abstract	Low water availability is the major environmental factor limiting crop productivity. Transcriptome analysis was used to study terminal drought response in wild emmer wheat, Triticum dicoccoides, genotypes contrasting in their productivity and yield stability under drought stress. A total of 5,892 differentially regulated transcripts were identified between drought and well-watered control and/or between drought resistant (R) and drought susceptible (S) genotypes. Functional enrichment analyses revealed that multilevel regulatory and signalling processes were significantly enriched among the drought-induced transcripts, in particular in the R genotype. Therefore, further analyses were focused on selected 221 uniquely expressed or highly abundant transcripts in the R genotype, as potential candidates for drought resistance genes. Annotation of the 221 genes revealed that 26% of them are involved in multilevel regulation, including: transcriptional regulation, RNA binding, kinase activity and calcium and abscisic acid signalling implicated in stomatal closure. Differential expression patterns were also identified in genes known to be involved in drought adaptation pathways, such as: cell wall adjustment, cuticular wax deposition, lignification, osmoregulation, redox homeostasis, dehydration protection and drought-induced senescence. These results demonstrate the potential of wild emmer wheat as a source for candidate genes for improving drought resistance.
Starting Page	167
Ending Page	186
Page Count	20
File Format	PDF
ISSN	1438793X
Journal	Functional & Integrative Genomics
Volume Number	10
Issue Number	2
e-ISSN	14387948
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-03-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ABA Microarray Abiotic stress Transcriptome Drought resistance Gene discovery Wheat Animal Genetics and Genomics Bioinformatics Biochemistry Microbial Genetics and Genomics Cell Biology Plant Genetics & Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine

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