Natural variation in linalool metabolites:One genetic locus, many functions?

• 作者: Jun He Rayko Halitschke Ian T.Baldwin Meredith C.Schuman
• 来源期刊: 植物学报（英文版）
• 年，卷（期）: 2021,（8）
• 所属期刊栏目: Breakthrough Reports
• 页码范围: 1416-1421
• 页数: 6页
• 语种: 英文

摘要

The ubiquitous volatile linalool is metabolized in plants to nonvolatile derivatives. We studied Nicotiana attenuata plants which naturally vary in (S)-(+)-linalool contents, and lines engineered to produce either (R)-(-)- or (S)-(+)-linalool. Only (S)-(+)-linalool production was associated with slower growth of a generalist herbivore, and a large fraction was present as nonvolatile derivatives. We found that variation in volatile li-nalool and its nonvolatile glycosides mapped to the same genetic locus which harbored the bio-synthetic gene, NaLIS, but that free linalool varied more in environmental responses. This study reveals how (S)-(+)-linalool and conjugates differ in their regulation and possible functions in resistance.