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Updated: May 5, 2026
Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 14, 2016
QTL Mapping and RNA-Seq Revealed Loci and Candidate Genes Associated with Cold Tolerance of Wheat Root at Seedling
Xuanshang Liu1,2, Chenyan Si1,2, Jingwei Xi1,2
1College of Agriculture, Shanxi Agricultural University, Jinzhong 030800, China.
Objectives:
Low-temperature stress has become a key factor severely restricting seedling growth in wheat, highlighting the growing importance of research on low-temperature tolerance in wheat. Most previous studies focused on the aboveground organs, and only a minority specifically targeted the roots.
Methods:
In this study, a recombinant inbred line population derived from a cross between DH118 and Jinmai 919 was used to dissect the genetic regulatory mechanism underlying root growth and development in wheat seedlings under low-temperature conditions.
Results:
A total of 9 QTLs associated with low-temperature tolerance coefficient were identified; among them, QCi.saw-2B and QCi.saw-5B were validated to be significantly associated with cold tolerance in a natural population including 289 wheat accessions. Moreover, 13 candidate genes from QTL intervals regulating root growth and development under low-temperature stress were further identified based on RNA sequencing.
Conclusions:
These results provide a foundation for further exploring the regulatory mechanism of root growth and development in wheat under low-temperature stress.
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