Integrated metabolomic and transcriptomic analysis reveals the mechanism of high polysaccharide content in tetraploid Dendrobium catenatum Lindl

Liu, Yang; Li, Xing-Ru; Zhang, Xiao-Jing; Duan, Shan-De; Su, Xue; Fan, Ze-Hua; Hao, Li-Hong; Xiang, Di-Ying; Chen, Duan-Fen; Niu, Shan-Ce

doi:10.1016/j.indcrop.2024.118391

Industrial Crops and Products

2024

DOI: 10.1016/j.indcrop.2024.118391

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Integrated metabolomic and transcriptomic analysis reveals the mechanism of high polysaccharide content in tetraploid Dendrobium catenatum Lindl

Yang Liu,

Xing-Ru Li,

Xiao-Jing Zhang

et al.

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2024

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Comparative Morphological, Physiological, and Transcriptomic Analyses of Diploid and Tetraploid Wucai (Brassica campestris L.)

Wang,

Luo

et al. 2024

Plants

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Polyploid plants often exhibit superior yield, stress resistance, and quality. In this study, homologous tetraploid wucai (Brassica campestris L.) was successfully obtained by spraying seedling growth points with colchicine. The morphological, cytological, and physiological characteristics of diploid and tetraploid wucai were analyzed, and transcriptomic sequencing was performed at three stages of development. Tetraploid seedings grew slowly but exhibited darker leaves, enlarged organs and cells, increased stomatal volume, decreased stomatal density, improved nutritional content, and enhanced photosynthesis. Differentially expressed genes (DEGs) identified in diploid and tetraploid plants at three stages of development were enriched in different pathways. Notably, DEGs identified in the tetraploid plants were specifically enriched in starch and sucrose metabolism, pentose and glucuronate interconversions, and ascorbate and aldarate metabolism. In addition, we found that the light green module was most relevant to ploidy, and DEGs in this module were significantly enriched in the glycolysis/gluconeogenesis and TCA cycle pathways. The differential expression of key glycolysis-associated genes at different developmental stages may be the driver of the observed differences between diploid and tetraploid wucai. This study lays a technical foundation for the development of polyploid wucai germplasm resources as well as the breeding of new varieties with improved quality, yield, and stress resistance. It also provides a good empirical reference for the genetic breeding of closely related Brassica species.

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Comparative Morphological, Physiological, and Transcriptomic Analyses of Diploid and Tetraploid Wucai (Brassica campestris L.)

Wang,

Luo

et al. 2024

Plants

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Integrated metabolomic and transcriptomic analysis reveals the mechanism of high polysaccharide content in tetraploid Dendrobium catenatum Lindl

Cited by 1 publication

References 61 publications

Comparative Morphological, Physiological, and Transcriptomic Analyses of Diploid and Tetraploid Wucai (Brassica campestris L.)

Comparative Morphological, Physiological, and Transcriptomic Analyses of Diploid and Tetraploid Wucai (Brassica campestris L.)

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