The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage

The plant circadian clock temporally drives gene expression throughout the day and coordinates various physiological processes with diurnal environmental changes. It is essential for conferring plant fitness and competitive advantages to survive and thrive under natural conditions through the circad...

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Main Authors: Shan Wang, Kailin Shi, Yufan Xiao, Wei Ma, Yiguo Hong, Daling Feng, Jianjun Zhao
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2025-06-01
Series:Journal of Integrative Agriculture
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Online Access:http://www.sciencedirect.com/science/article/pii/S2095311924003186
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author Shan Wang
Kailin Shi
Yufan Xiao
Wei Ma
Yiguo Hong
Daling Feng
Jianjun Zhao
author_facet Shan Wang
Kailin Shi
Yufan Xiao
Wei Ma
Yiguo Hong
Daling Feng
Jianjun Zhao
author_sort Shan Wang
collection DOAJ
description The plant circadian clock temporally drives gene expression throughout the day and coordinates various physiological processes with diurnal environmental changes. It is essential for conferring plant fitness and competitive advantages to survive and thrive under natural conditions through the circadian control of gene transcription. Chinese cabbage (Brassica rapa ssp. pekinensis) is an economically important vegetable crop worldwide, although there is little information concerning its circadian clock system. Here we found that gene expression patterns are affected by circadian oscillators at both the transcriptional and post-transcriptional levels in Chinese cabbage. Time-course RNA-seq analyses were conducted on two short-period lines (SPcc-1 and SPcc-2) and two long-period lines (LPcc-1 and LPcc-2) under constant light. The results showed that 32.7–50.5% of the genes were regulated by the circadian oscillator and the expression peaks of cycling genes appeared earlier in short-period lines than long-period lines. In addition, approximately 250 splicing events exhibited circadian regulation, with intron retention (IR) accounting for a large proportion. Rhythmically spliced genes included the clock genes LATE ELONGATED HYPOCOTYL (BrLHY), REVEILLE 2 (BrRVE2) and EARLY FLOWERING 3 (BrELF3). We also found that the circadian oscillator could notably influence the diurnal expression patterns of genes that are associated with glucose metabolism via photosynthesis, the Calvin cycle and the tricarboxylic acid (TCA) cycle at both the transcriptional and post-transcriptional levels. The collective results of this study demonstrate that circadian-regulated physiological processes contribute to Chinese cabbage growth and development.
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spelling doaj-art-ffa88cce8be24ed1adbf7ad6ab0d97162025-08-20T03:42:09ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192025-06-012462155217010.1016/j.jia.2024.08.026The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbageShan Wang0Kailin Shi1Yufan Xiao2Wei Ma3Yiguo Hong4Daling Feng5Jianjun Zhao6State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaState Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaState Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaState Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaState Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaCorrespondence Daling Feng; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaCorrespondence Jianjun Zhao; State Key Laboratory of North China Crop Improvement and Regulation/Key Laboratory of Vegetable Germplasm Innovation and Utilization of Hebei/Ministry of Education of China–Hebei Province Joint Innovation Center for Efficient Green Vegetable Industry, College of Horticulture, Hebei Agricultural University, Baoding 071000, ChinaThe plant circadian clock temporally drives gene expression throughout the day and coordinates various physiological processes with diurnal environmental changes. It is essential for conferring plant fitness and competitive advantages to survive and thrive under natural conditions through the circadian control of gene transcription. Chinese cabbage (Brassica rapa ssp. pekinensis) is an economically important vegetable crop worldwide, although there is little information concerning its circadian clock system. Here we found that gene expression patterns are affected by circadian oscillators at both the transcriptional and post-transcriptional levels in Chinese cabbage. Time-course RNA-seq analyses were conducted on two short-period lines (SPcc-1 and SPcc-2) and two long-period lines (LPcc-1 and LPcc-2) under constant light. The results showed that 32.7–50.5% of the genes were regulated by the circadian oscillator and the expression peaks of cycling genes appeared earlier in short-period lines than long-period lines. In addition, approximately 250 splicing events exhibited circadian regulation, with intron retention (IR) accounting for a large proportion. Rhythmically spliced genes included the clock genes LATE ELONGATED HYPOCOTYL (BrLHY), REVEILLE 2 (BrRVE2) and EARLY FLOWERING 3 (BrELF3). We also found that the circadian oscillator could notably influence the diurnal expression patterns of genes that are associated with glucose metabolism via photosynthesis, the Calvin cycle and the tricarboxylic acid (TCA) cycle at both the transcriptional and post-transcriptional levels. The collective results of this study demonstrate that circadian-regulated physiological processes contribute to Chinese cabbage growth and development.http://www.sciencedirect.com/science/article/pii/S2095311924003186circadian clocktranscriptomealternative splicingglucose metabolismChinese cabbage
spellingShingle Shan Wang
Kailin Shi
Yufan Xiao
Wei Ma
Yiguo Hong
Daling Feng
Jianjun Zhao
The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
Journal of Integrative Agriculture
circadian clock
transcriptome
alternative splicing
glucose metabolism
Chinese cabbage
title The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
title_full The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
title_fullStr The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
title_full_unstemmed The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
title_short The circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in Chinese cabbage
title_sort circadian clock shapes diurnal gene expression patterns linked to glucose metabolic processes in chinese cabbage
topic circadian clock
transcriptome
alternative splicing
glucose metabolism
Chinese cabbage
url http://www.sciencedirect.com/science/article/pii/S2095311924003186
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