Adventitious rooting of auxin-treated Lavandula dentata cuttings

Bona, Cleusa; Biasi, Luiz Antônio; Lipski, Bernardo; Masetto, Magda Aparecida Maia; Deschamps, Cícero

doi:10.1590/s0103-84782010005000081

Cited by 8 publications

(6 citation statements)

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“…Rooting of stem cutting is widely used in horticulture for the propagation of aromatic and medicinal plants, however poor rooting is often observed (Kasem and El-baset, 2014). In order to overcome this problem synthetic auxins are often applied at stimulating the adventitious root formation on cuttings (Bona et al, 2010), however due to the continuous increase of environmental footprint it is urgent to find eco-friendly alternatives. Although several studies have reported the beneficial effect of BE and PGPR inoculation in several economically-important crops, like maize (Pereira and Castro, 2014a), carrot and potatoes (Surette et al, 2003), little information is available for aromatic and medicinal plants.…”

Section: Resultsmentioning

confidence: 99%

“…However, the poor rooting capacity of cuttings is often observed. In order to overcome this problem, plant growth regulators like the indole-3-butyric acid (IBA) and indole-3-acetic acid (IAA) are commonly used and showed to be efficient in increasing the adventitious root formation and the rooting capacity of cuttings (Bona et al, 2010;Kasem and El-baset, 2014). However, chemical application raises environmental concerns and increase production costs thus the use of sustainable practices in the production of medicinal and aromatic plants is imperative.…”

Section: Introductionmentioning

confidence: 99%

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Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities

Pereira

Monteiro

Vega

et al. 2016

Ecological Engineering

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Aromatic plants such as lavender are stirring the attention of many researchers due to their content in bioactive secondary metabolites that can be used in traditional medicine. However, information regarding naturally occurring lavender associated bacterial endophytes (BE) is limited. To the best of our knowledge, this is the first study which aims to assess the phylogenetic diversity of the culturable endophytic bacteria of Lavandula dentata cultivated under organic management and to evaluate their potential as plant growth promoting (PGP) agents. BE were grouped by random amplified polymorphic DNA and identified by 16S ribosomal RNA gene sequencing. Endophytes were further characterized for the ability to produce several PGP substances, like ammonia, siderophores, indol-3-acetic acid, hydrogen cyanide and for the ability to solubilize phosphate. Plant cell-wall degrading enzymes were also determined. Densities of BE were higher in roots (log 6.39 CFU g-1 fresh weight) than in shoots (log 5.56 CFU g-1 fresh weight). Phylogenetic analysis showed that BE were affiliated to two major groups: γ-Proteobacteria (50%) and Firmicutes (31.6%) and a small part belonged to α-(7.9%) and β-Proteobacteria (10.5%), being Pseudomonas and Bacillus the most highly represented genera. Higher bacterial diversity was found in the lavender roots, with endophytes belonging to 6 different genera (Pseudomonas, Variovorax, Rhizobium, Caulobacter, Bacillus and Paenibacillus), than in shoots where only 3 genera (Bacillus, Pseudomonas and Xanthomonas) were found. Overall, BE showed ability to produce extracellular enzymes and multiple PGP traits, suggesting their potential use as efficient bioinoculants in sustainable cultivation of medicinal and aromatic plants.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities

Pereira

Monteiro

Vega

et al. 2016

Ecological Engineering

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“…Lavandula dentata L. is popularly known as lavender and it is a medicinal plant used in the traditional medicine as an antidiabetic, antispasmodic, anti-hypertensive against common flu and renal colic. It is also used in the ornamentation and as a melliferous plant [8][9][10][11][12][13][14] . Two problems are linked with medicinal and herbal drug plants, the adulteration and tampering 15,16 .…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition and Biological Activities of The Essential Oil And Anatomical Markers Of Lavandula Dentata L. Cultivated In Brazil

Justus

Almeida

Gonçalves

et al. 2018

Braz. arch. biol. technol.

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Lavandula dentata, popularly known as lavender, is commonly used in traditional medicine for the treatment of digestive and inflammatory disorders. The objective of this study was to analyzed the chemical oil composition, antioxidant and antimicrobial activities of the essential oil and anatomical markers of the leaf and stem of L. dentata cultivated in South Brazil. Essential oil showed an antioxidant activity similar to rutin and gallic acid when analyzed by phosphomolybdenum method. However, by the free radical DPPH and ABTS methods, it showed a slight potential antioxidant. Essential oil presented 1,8-cineol (63%) as major component, antimicrobial activity against Gram-positive, Gram-negative bacteria strains and Candida albicans, by broth microdilution. The anatomical profile provided the following main microscopic markers: hypostomatic leaves; diacytic stomata, thin and striate cuticle; multicellular and branched non-glandular trichomes; capitate glandular trichomes; peltate glandular trichomes; dorsiventral mesophyll; flat-convex shape midrib, truncated on the abaxial side; one collateral vascular bundle in the midrib; square stem shape, angular collenchyma alternated with cortical parenchyma; sclerenchymatic fibers well-developed on the four edges.

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“…Rooting percentage was considered good, ranging from 80% to 100%, with 20 roots, 10 to 12 cm-long per cutting, in average (Table 2). Such great rooting percentage may be compared to percentages obtained by Bona et al (2010) in L. dentata, a Lavandula species which was considered easy to root. Auxin did not influence rooting on G2 either, which presented approximately 50% rooting, with five roots, 6-7 cm-long per cutting, in average (Table 2).…”

Section: Resultsmentioning

confidence: 99%

“…Herein, similarly to results obtained by Blythe et al (2003) on cuttings of Hedera helix, although auxin was not essential for rooting, root percentage and length were greater when treated with IBA. Bona et al (2010) observed that percentage of roots of L. dentata increased with IBA application and a quadratic regression was obtained for root number, being 2000 mg L -1 considered the best IBA concentration. Table 3.…”

Section: )mentioning

confidence: 90%

Rooting induction of different Lavandula angustifolia accessions by auxin application

et al. 2012

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Lavandula angustifolia Miller (lavender), considered a hard-to-root species, is comprised of many varieties and horticultural forms, and genotypes from different provenances may present variance in rooting capacity. The objective of this experiment was to test different concentrations of indol-3-butyric acid (IBA) on rooting of eight (G1 to G8) L. angustifolia genotypes from different provenances. Cuttings were treated with different doses (0 to 2000 mg L -1 ) of IBA. Rooting percentage (RP), root number (RN), and length of the longest root (RL) were evaluated. The different accessions presented very diverse response to IBA application. IBA did not exert influence on rooting of G1, G2, and G7; was beneficial to G3 until 700 mg L -1 ; was beneficial to G4 and G6; and was prejudicial to G5 and G8; the same IBA dose which promoted better rooting on G3 (700 mg L -1 ) was toxic to G5; 1500 mg L -1 of IBA promoted better rooting, greater root number and length on G6 but was completely and significantly detrimental to G8. G1 and G3 presented high rooting percentages, in spite of L. angustifolia being considered a hard to root species. G4, G5 and G6, however, presented very poor rooting, compared to the other genotypes. Necessity of auxin application and adequate dose may not be generalized to L. angustifolia different accessions. Its use should be incentivized when the genotype is recalcitrant to root and auxin concentration should be adjusted to it. Key words: Lavender, cutting propagation, indol-3-butyric acid (IBA), genotypes, precedence ResumoA Lavandula angustifolia Miller (alfazema), considerada de difícil enraizamento, apresenta muitas variedades e formas horticulturais, e genótipos de diferentes procedências podem apresentar variação na sua capacidade de enraizamento. O objetivo deste experimento foi testar diferentes concentrações de ácido indol butírico (AIB) no enraizamento de oito genótipos (G1 a G8) de L. angustifolia de diferentes procedências. Estacas foram tratadas com diferentes doses (0 a 2000 mg L -1 ) de AIB. Porcentagem de enraizamento (RN), número de raízes (RN) e comprimento da maior raiz (RL) foram avaliados. Os diferentes acessos apresentaram diferentes respostas à aplicação de AIB, que não influenciou no enraizamento de G1, G2 e G7; foi benéfica para G3 até 700 mg L -1 ; benéfica para G4 e G6; e prejudicial para G5 e G8; a mesma dose de AIB que promoveu melhor enraizamento em G3 (700 mg L -1 ) foi tóxica para G5; 1500 mg L -1 de AIB promoveu melhor enraizamento, maior número e comprimento de raízes em G6 mas foi completamente e significativamente prejudicial para G8. G1 e G3 apresentaram altas taxas de enraizamento, apesar da L. angustifolia ser considerada espécie de difícil enraizamento. G4, 1 Eng° Agr°, PhD, Pesquisadora do Instituto Agronômico do Paraná, IAPAR. Curitiba, PR.

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Adventitious rooting of auxin-treated Lavandula dentata cuttings

Abstract: Lavandula species may be propagated by seeds. However, plants will present expressive variation both in size and essential oil content.

Cited by 8 publications

References 6 publications

Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities

Endophytic culturable bacteria colonizing Lavandula dentata L. plants: Isolation, characterization and evaluation of their plant growth-promoting activities

Chemical Composition and Biological Activities of The Essential Oil And Anatomical Markers Of Lavandula Dentata L. Cultivated In Brazil

Rooting induction of different Lavandula angustifolia accessions by auxin application

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