Comparative transcriptome analysis of panicle development under heat stress in two rice (Oryza sativaL.) cultivars differing in heat tolerance | Zendy

Yaliang Wang | Zendy; Yikai Zhang | Zendy; Qiang Zhang | Zendy; Yongtao Cui | Zendy; Jing Xiang | Zendy; Huizhe Chen | Zendy; Guohui Hu | Zendy; Yanhua Chen | Zendy; Xiaodan Wang | Zendy; Defeng Zhu | Zendy; Yuping Zhang | Zendy

Open Access

Comparative transcriptome analysis of panicle development under heat stress in two rice (Oryza sativaL.) cultivars differing in heat tolerance

Author(s) -

Yaliang Wang,

Yikai Zhang,

Qiang Zhang,

Yongtao Cui,

Jing Xiang,

Huizhe Chen,

Guohui Hu,

Yanhua Chen,

Xiaodan Wang,

Defeng Zhu,

Yuping Zhang

Publication year - 2019

Publication title -

peerj

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.927

H-Index - 70

ISSN - 2167-8359

DOI - 10.7717/peerj.7595

Subject(s) - panicle , oryza sativa , transcriptome , biology , kegg , gene , cultivar , botany , genetics , horticulture , gene expression

Heat stress inhibits rice panicle development and reduces the spikelet number per panicle. This study investigated the mechanism involved in heat-induced damage to panicle development and spikelet formation in rice cultivars that differ in heat tolerance. Transcriptome data from developing panicles grown at 40 °C or 32 °C were compared for two rice cultivars: heat-tolerant Huanghuazhan and heat-susceptible IR36. Of the differentially expressed genes (DEGs), 4,070 heat stress-responsive genes were identified, including 1,688 heat-resistant-cultivar-related genes (RHR), 707 heat-susceptible-cultivar-related genes (SHR), and 1,675 common heat stress-responsive genes (CHR). A Gene Ontology (GO) analysis showed that the DEGs in the RHR category were significantly enriched in 54 gene ontology terms, some of which improved heat tolerance, including those in the WRKY, HD-ZIP, ERF, and MADS transcription factor families. A Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the DEGs in the RHR and SHR categories were enriched in 15 and 11 significant metabolic pathways, respectively. Improved signal transduction capabilities of endogenous hormones under high temperature seemed to promote heat tolerance, while impaired starch and sucrose metabolism under high temperature might have inhibited young panicle development. Our transcriptome analysis provides insights into the different molecular mechanisms of heat stress tolerance in developing rice.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research