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Increasing Temperature Changes Flux into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia sinensis) and Other Plants.
J Agric Food Chem 2019; 67(36):10145-10154JA

Abstract

2-Phenylethanol (2PE) is a representative aromatic aroma compound in tea (Camellia sinensis) leaves. However, its formation in tea remains unexplored. In our study, feeding experiments of [2H8]L-phenylalanine (Phe), [2H5]phenylpyruvic acid (PPA), or (E/Z)-phenylacetaldoxime (PAOx) showed that three biosynthesis pathways for 2PE derived from L-Phe occurred in tea leaves, namely, pathway I (via phenylacetaldehyde (PAld)), pathway II (via PPA and PAld), and pathway III (via (E/Z)-PAOx and PAld). Furthermore, increasing temperature resulted in increased flux into the pathway for 2PE from L-Phe via PPA and PAld. In addition, tomato fruits and petunia flowers also contained the 2PE biosynthetic pathway from L-Phe via PPA and PAld and increasing temperatures led to increased flux into this pathway, suggesting that such a phenomenon might be common among most plants containing 2PE. This represents a characteristic example of changes in flux into the biosynthesis pathways of volatile compounds in plants in response to stresses.

Authors+Show Affiliations

Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. Center of Economic Botany, Core Botanical Gardens , Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. Center of Economic Botany, Core Botanical Gardens , Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. University of Chinese Academy of Sciences , No. 19A Yuquan Road , Beijing 100049 , China.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. University of Chinese Academy of Sciences , No. 19A Yuquan Road , Beijing 100049 , China.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China.Guangdong Food and Drug Vocational College , No. 321 Longdongbei Road , Tianhe District , Guangzhou 510520 , China.Graduate School of Science and Technology, Shizuoka University , No. 3-5-1 Johoku , Naka-ku, Hamamatsu 432-8561 , Japan.Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement & Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. Center of Economic Botany, Core Botanical Gardens , Chinese Academy of Sciences , No. 723 Xingke Road , Tianhe District , Guangzhou 510650 , China. University of Chinese Academy of Sciences , No. 19A Yuquan Road , Beijing 100049 , China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31418564

Citation

Zeng, Lanting, et al. "Increasing Temperature Changes Flux Into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia Sinensis) and Other Plants." Journal of Agricultural and Food Chemistry, vol. 67, no. 36, 2019, pp. 10145-10154.
Zeng L, Tan H, Liao Y, et al. Increasing Temperature Changes Flux into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia sinensis) and Other Plants. J Agric Food Chem. 2019;67(36):10145-10154.
Zeng, L., Tan, H., Liao, Y., Jian, G., Kang, M., Dong, F., ... Yang, Z. (2019). Increasing Temperature Changes Flux into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia sinensis) and Other Plants. Journal of Agricultural and Food Chemistry, 67(36), pp. 10145-10154. doi:10.1021/acs.jafc.9b03749.
Zeng L, et al. Increasing Temperature Changes Flux Into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia Sinensis) and Other Plants. J Agric Food Chem. 2019 Sep 11;67(36):10145-10154. PubMed PMID: 31418564.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Increasing Temperature Changes Flux into Multiple Biosynthetic Pathways for 2-Phenylethanol in Model Systems of Tea (Camellia sinensis) and Other Plants. AU - Zeng,Lanting, AU - Tan,Haibo, AU - Liao,Yinyin, AU - Jian,Guotai, AU - Kang,Ming, AU - Dong,Fang, AU - Watanabe,Naoharu, AU - Yang,Ziyin, Y1 - 2019/08/30/ PY - 2019/8/17/pubmed PY - 2019/8/17/medline PY - 2019/8/17/entrez KW - 2-phenylethanol KW - Camellia sinensis KW - aroma KW - phenylpyruvic acid KW - tea KW - volatile SP - 10145 EP - 10154 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 67 IS - 36 N2 - 2-Phenylethanol (2PE) is a representative aromatic aroma compound in tea (Camellia sinensis) leaves. However, its formation in tea remains unexplored. In our study, feeding experiments of [2H8]L-phenylalanine (Phe), [2H5]phenylpyruvic acid (PPA), or (E/Z)-phenylacetaldoxime (PAOx) showed that three biosynthesis pathways for 2PE derived from L-Phe occurred in tea leaves, namely, pathway I (via phenylacetaldehyde (PAld)), pathway II (via PPA and PAld), and pathway III (via (E/Z)-PAOx and PAld). Furthermore, increasing temperature resulted in increased flux into the pathway for 2PE from L-Phe via PPA and PAld. In addition, tomato fruits and petunia flowers also contained the 2PE biosynthetic pathway from L-Phe via PPA and PAld and increasing temperatures led to increased flux into this pathway, suggesting that such a phenomenon might be common among most plants containing 2PE. This represents a characteristic example of changes in flux into the biosynthesis pathways of volatile compounds in plants in response to stresses. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/31418564/Increasing_Temperature_Changes_Flux_into_Multiple_Biosynthetic_Pathways_for_2-Phenylethanol_in_Model_Systems_of_Tea_(Camellia_sinensis)_and_Other_Plants L2 - https://dx.doi.org/10.1021/acs.jafc.9b03749 DB - PRIME DP - Unbound Medicine ER -