Author:
Yan Jun,Su Peisen,Meng Xianyong,Liu Pingzeng
Abstract
Abstract
Background
The receptor-like kinase (RLK) gene families in plants contains a large number of members. They are membrane proteins with an extracellular receptor domain and participate in biotic and abiotic stress responses.
Results
In this study, we identified RLKs in 15 representative plant genomes, including wheat, and classified them into 64 subfamilies by using four types of phylogenetic trees and HMM models. Conserved exon‒intron structures with conserved exon phases in the kinase domain were found in many RLK subfamilies from Physcomitrella patens to Triticum aestivum. Domain distributions of RLKs were also diagrammed. Collinearity events and tandem gene clusters suggested that polyploidization and tandem duplication events contributed to the member expansions of T. aestivum RLKs. Global expression pattern analysis was performed by using public transcriptome data. These analyses were involved in T. aestivum, Aegilops tauschii and Brachypodium distachyon RLKs under biotic and abiotic stresses. We also selected 9 RLKs to validate the transcriptome prediction by using qRT‒PCR under drought treatment and with Fusarium graminearum infection. The expression trends of these 9 wheat RLKs from public transcriptome data were consistent with the results of qRT‒PCR, indicating that they might be stress response genes under drought or F. graminearum treatments.
Conclusion
In this study, we identified, classified, evolved, and expressed RLKs in wheat and related plants. Thus, our results will provide insights into the evolutionary history and molecular mechanisms of wheat RLKs.
Funder
A Project of Shandong Province Higher Educational Science and Technology Program
the Science and Technology Development Plan of Tai 'an in 2019
A Project of Shandong Province Higher Educational Program for Introduction and Cultivation of Young Innovative Talents in 2021
Natural Science Foundation of Shandong Province
Doctoral research start-up funds from Liaocheng University
Open project of State Key Laboratory of Crop Biology in Shandong Agricultural University
Publisher
Springer Science and Business Media LLC
Cited by
4 articles.
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