期刊
BMC PLANT BIOLOGY
卷 21, 期 1, 页码 -出版社
BMC
DOI: 10.1186/s12870-021-02948-0
关键词
Garlic; Allium sativum; Transcriptomics; Alliin; Gene prediction
资金
- National Natural Science Foundation of China [31672148, 31770613]
- Reserve Talents of Preeminent Youth Fund of Jiangsu Province - Jiangsu Normal University [HB2016016]
- Student Innovation Training Program of Jiangsu [SJKY19-2046]
- Science and Technology Special Project of North Jiangsu [XZ-SZ201839]
- Science and Technology Plan Project of Xuzhou [KC20040]
This study revealed differential alliin content in different parts of garlic, with a decrease in alliin levels in mature leaves following injury. Furthermore, genes related to cysteine and serine biosynthetic pathways were up-regulated in mature garlic leaves, potentially contributing to alliin accumulation.
Background Allium sativum (garlic) is an economically important food source and medicinal plant rich in sulfides and other protective substances such as alliin, the precursor of allicin biosynthesis. Cysteine, serine and sulfur is the precursor of alliin biosynthesis. However, little is known about the alliin content under abiotic stress or the mechanism by which it is synthesized. Results The findings revealed that the content of alliin was lowest in the garlic roots, and highest in the buds. Furthermore, alliin levels decreased in mature leaves following wounding. Transcriptome data generated over time after wounding further revealed significant up-regulation of genes integral to the biosynthetic pathways of cysteine and serine in mature garlic leaves. Conclusions The findings suggest that differential expression of cysteine, serine and sulfide-related genes underlies the accumulation of alliin and its precursors in garlic, providing a basis for further analyses of alliin biosynthesis.
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