RNA-seq analysis reveals key genes associated with seed germination of Fritillaria taipaiensis P.Y.Li by cold stratification
AffiliationFaculty of Science and Engineering, University of Wolverhampton, Wolverhampton, United Kingdom
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AbstractSeed dormancy is an adaptive strategy for environmental evolution. However, the molecular mechanism of the breaking of seed dormancy at cold temperatures is still unclear, and the genetic regulation of germination initiated by exposure to cold temperature requires further investigation. In the initial phase of the current study, the seed coat characteristics and embryo development of Fritillaria taipaiensis P.Y.Li at different temperatures (0°C, 4°C, 10°C & 25°C) was recorded. The results obtained demonstrated that embryo elongation and the dormancy-breaking was most significantly affected at 4°C. Subsequently, transcriptome analyses of seeds in different states of dormancy, at two stratification temperatures (4°C and 25°C) was performed, combined with weighted gene coexpression network analysis (WGCNA) and metabolomics, to explore the transcriptional regulation of seed germination in F. taipaiensis at the two selected stratification temperatures. The results showed that stratification at the colder temperature (4°C) induced an up-regulation of gene expression involved in gibberellic acid (GA) and auxin biosynthesis and the down-regulation of genes related to the abscisic acid (ABA) biosynthetic pathway. Thereby promoting embryo development and the stimulation of seed germination. Collectively, these data constitute a significant advance in our understanding of the role of cold temperatures in the regulation of seed germination in F. taipaiensis and also provide valuable transcriptomic data for seed dormancy for other non-model plant species.
CitationYang Q.-X., Chen D., Zhao Y., Zhang X.-Y., et al. (2022) RNA-seq analysis reveals key genes associated with seed germination of Fritillaria taipaiensis P.Y.Li by cold stratification, Frontiers in Plant Science. 13, Article Number 1021572. doi: 10.3389/fpls.2022.1021572
PublisherFrontiers Media S.A.
JournalFrontiers in Plant Science
Description© 2022 The Authors. Published by Frontiers Media. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.3389/fpls.2022.1021572
SponsorsThis research was supported by the National Natural Science Foundation of China (31971543) and by the Major Special Science and Technology Project of Yunnan Province (202102AA310031,202101BD070001-008, 202102AA310045, 202005AC160040).
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/