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Expression profiling of potato cultivars with contrasting tuberization at elevated temperature using microarray analysis

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Title Expression profiling of potato cultivars with contrasting tuberization at elevated temperature using microarray analysis
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Creator Anupama Singh a, *, Sunderasha Siddappa a, Vinay Bhardwaj a, Brajesh Singh a, Devendra Kumar b, Bir Pal Singh a
 
Subject Solanum tuberosum Microarray Heat stress Tuberization
 
Description Not Available
Temperature is one of the most significant factors affecting potato yield. Night temperature beyond 18
e22 C drastically reduces tuber formation, constraining potato cultivation in tropics and subtropics.
Identification of genes and pathways affected by high temperature is crucial for developing thermo
tolerant cultivars for these regions. In the present study, two cultivars with contrasting tuberization
behavior at night temperatures (24 C) were selected for gene expression analysis using a customized
microarray chip representing 39,031 potato genes. A total of 2500 genes were differentially expressed on
21 d and 4096 genes on 14 d after stress. Gene ontology and pathway analysis provided insights into the
probable biological processes and pathways governing tuberization at elevated temperature. Pathway
maps were constructed to graphically represent the gene expression patterns. Genes associated with
photosynthesis, hormonal activity, sugar transporters and transcription factors were differentially
expressed. The results are presented and discussed in terms of tuberization at high temperature. The
effect of high temperature on expression of genes controlling tuberization was also analyzed. This study
provided useful information on potato tuberization at elevated temperature and make available a
framework for further investigations into heat stress in potato.
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Date 2018-10-26T06:45:37Z
2018-10-26T06:45:37Z
2015-09-21
 
Type Research Paper
 
Identifier 5
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/8184
 
Language English
 
Relation Not Available;
 
Publisher © 2015 Elsevier Masson SAS.