Trichomes, essential oils and in vitro propagation of Lavandula pedunculata (Lamiaceae)

被引:88
|
作者
Zuzarte, Monica R. [1 ,2 ]
Dinis, Augusto M. [1 ]
Cavaleiro, Carlos [2 ]
Salgueiro, Ligia R. [2 ]
Canhoto, Jorge M. [1 ]
机构
[1] Univ Coimbra, Ctr Pharmaceut Studies, Dept Life Sci, P-3001401 Coimbra, Portugal
[2] Univ Coimbra, Fac Pharm, Ctr Pharmaceut Studies, P-3000354 Coimbra, Portugal
关键词
Lavandula pedunculata; Essential oils; Glandular trichomes; Micropropagation; LEAF-DERIVED CALLUS; PLANT-REGENERATION; GLANDULAR TRICHOMES; GROWTH-REGULATORS; SHOOT REGENERATION; VITRIFICATION; LEAVES; MICROPROPAGATION; LATIFOLIA; DENTATA;
D O I
10.1016/j.indcrop.2010.07.010
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Lavanders (Lavandula spp.) are aromatic plants with high industrial and commercial value, used in food industry, perfumery and pharmaceutical preparations. Micropropagation can be used for large-scale multiplication of essential oil producing plants thus avoiding an overexploitation of natural resources. This work aims to develop a reliable protocol for the in vitro propagation of Lavandula pedunculata and to evaluate the potential of these plants for essential oil production with industrial application. In vitro cultures were established on media with different concentrations of benzyladenine. Trichome morphology was examined by SEM and their secretion analyzed by histochemical tests. Essential oils were isolated by hydrodistillation and analyzed by GC and GC-MS. The essential oils and trichomes of in vitro plants were compared with those of field-growing plants. Best propagation rates were achieved with 0.25 mg/l BA. Rooting occurred without treatment with auxins thus preventing callus growth. Trichomes and essential oils of the in vitro propagated plants were similar to those of the parent plants. Two chemotypes were characterized: 1,8-cineole/camphor type and fenchone type. Since trichomes and essential oils of L pedunculata micropropagated plantlets are identical to those produced by field-growing plants, in vitro cultures can be used for essential oil production without affecting natural resources. Moreover, the quality of the essential oils is assured and this protocol can be further applied to the propagation of selected chemotypes for industrial purposes. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:580 / 587
页数:8
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