期刊
PHYTOCHEMISTRY
卷 136, 期 -, 页码 46-55出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2016.12.020
关键词
Marchantia polymmpha; Selaginella moellendorffii and S. uncinata; Physcomitrella patens; Oryza sativa; Zea mays; Marchantiaceae; Selaginellaceae; Funariaceae; Poaceae; Ferns; Evolution; Biosynthesis and catabolism; Brassinosteroids; Cytochrome P450; CYP85; CYP72
资金
- Ministry of Education, Culture, Sports, Science and Technology-Supported Program for the Strategic Research Foundation at Private Universities [S0801019]
- Japan Society for the Promotion of Science [13460050]
- Grants-in-Aid for Scientific Research [17K07750, 16K18572, 16H01233, 13460050, 17H03746] Funding Source: KAKEN
Endogenous brassinosteroids (BRs) in non-flowering land plants were analyzed. BRs were found in a liverwort (Marchantia polymorpha), a moss (Physcomitrella patens), lycophytes (Selaginella moellendorffii and S. uncinata) and 13 fern species. A biologically active BR, castasterone (CS), was identified in most of these non-flowering plants but another biologically active BR, brassinolide, was not. It may be distinctive that levels of CS in non-flowering plants were orders of magnitude lower than those in flowering plants. 22-Hydroxycampesterol and its metabolites were identified in most of the non-flowering plants suggesting that the biosynthesis of BRs via 22-hydroxylation of campesterol occurs as in flowering plants. Phylogenetic analyses indicated that M. polymorpha, P. patens and S. moellendorffii have cytochrome P450s in the CYP85 clans which harbors BR biosynthesis enzymes, although the P450 profiles are simpler as compared with Arabidopsis and rice. Furthermore, these basal land plants were found to have multiple P450s in the CYP72 clan which harbors enzymes to catabolize BRs. These findings indicate that green plants were able to synthesize and inactivate BRs from the land-transition stage. (C) 2016 Elsevier Ltd. All rights reserved.
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