Changes in Non-Volatile and Volatile Metabolites Associated with Heterosis in Tea Plants (Camellia sinensis)

Heterosis or hybrid vigor is extensively used in plant breeding. However, the contribution of metabolites to heterosis is still elusive. Here, we systematically identified the non-volatile and volatile metabolites of two hybrids and their parents in Camellia sinensis. The metabolomics analysis showe...

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Veröffentlicht in:Journal of agricultural and food chemistry 2022-03, Vol.70 (9), p.3067-3078
Hauptverfasser: Wang, Pengjie, Gu, Mengya, Shao, Shuxian, Chen, Xiaomin, Hou, Binghao, Ye, Naixing, Zhang, Xingtan
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container_end_page 3078
container_issue 9
container_start_page 3067
container_title Journal of agricultural and food chemistry
container_volume 70
creator Wang, Pengjie
Gu, Mengya
Shao, Shuxian
Chen, Xiaomin
Hou, Binghao
Ye, Naixing
Zhang, Xingtan
description Heterosis or hybrid vigor is extensively used in plant breeding. However, the contribution of metabolites to heterosis is still elusive. Here, we systematically identified the non-volatile and volatile metabolites of two hybrids and their parents in Camellia sinensis. The metabolomics analysis showed prevalent non-additive accumulation in hybrids, among which the non-additive nucleotides, alkaloids, organic acids, and tannins contribute to the positive heterosis of hybrids, including typical inosine, guanosine, adenosine, caffeine, succinic acid, adipic acid, xylonic acid, and gallic acid. The catechins and free amino acids in hybrids showed negative heterosis compared to its maternal cultivar TGY. Furthermore, the significant accumulation of non-additive terpenes combined with the mild heterosis of other types of volatiles contributes to the aroma of tea plant hybrids. The genetics of volatiles from different parents affect the aroma of hybrids processed into oolong tea. The comprehensive heterosis of these non-additive metabolites may play an important role in the formation of desirable breeding traits for hybrids. Our results provide insights into the utilization of heterosis breeding and the regulation of heterosis metabolites in tea plants.
doi_str_mv 10.1021/acs.jafc.1c08248
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subjects Camellia sinensis - chemistry
Hybrid Vigor
Metabolomics
Omics Technologies Applied to Agriculture and Food
Plant Breeding
Plant Leaves - chemistry
Tea - chemistry
title Changes in Non-Volatile and Volatile Metabolites Associated with Heterosis in Tea Plants (Camellia sinensis)
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