1. An integrated physiological indicator and transcriptomic analysis reveals the response of soybean buds to high-temperature stress
- Author
-
Jiajia Li, Meiyan Wu, Haoran Chen, Wei Liao, Shu Yao, Ying Wei, Heng Wang, Qun Long, Xiaoyu Hu, Wei Wang, Guoji Wang, Lijuan Qiu, and Xiaobo Wang
- Subjects
Soybean ,Bud ,High temperature stress ,Physiology ,Molecular mechanism ,Botany ,QK1-989 - Abstract
Abstract Background Under global warming, high temperature (HT) has become a major meteorological factor affecting soybean production. To explore the candidate genes and regulatory mechanism of the soybean bud response to HT stress, previously identified as HT-tolerant (‘Handou14’; HD14) and HT-sensitive (‘Jiadou36’; JD36) were treated for 5 days in an artificial climate incubator either with HT (43 °C (day)/ 33 °C (night), 16 h light/8 h darkness) or the non-stress growth condition (25 °C, 16 h light/8 h darkness) as the control at the bud stage were used as experimental materials in this study. After HT treatment, changes in physiological indicators including hypocotyl length, enzyme activity and hormone content were detected; at the same time, the cotyledons, hypocotyls, and main roots were collected for transcriptome sequencing analysis. Analyzing the mechanisms of HT stress response in the bud stage of HD14 and JD36 at physiological and transcription levels. Results Analysis of physiological indicator showed that the activities of superoxide dismutase (SOD) were significantly increased 47.4% and 41.2% in the cotyledon of HD14 and the main root of JD36, and the contents of peroxidase (POD) were significantly increased 61.5% and 125% in the hypocotyl of HD14 and JD36; the contents of malonaldehyde (MDA) were significantly increased 44.8% and 22.2% in the main root of HD14 and JD36 after HT treatment. The content of abscisic acid (ABA) were significantly increased 1.9 fold and 1.2 fold in the root of HD14 and JD36 in response to HT treatment, whereas the content of gibberellin (GA) were decreased 2.2 fold and 1.3 fold in the cotyledon and root, and increased 1.6 fold in the hypocotyl in HD14 (P
- Published
- 2024
- Full Text
- View/download PDF