共查询到20条相似文献,搜索用时 31 毫秒
1.
A continuing obstacle for regenerating safflower (Carthamus tinctorius L.) plants from cultured explants or callus has been a reliable method for rooting shoots. For shoots directly regenerated from primary explants, 76% of shoots rooted after a 7-d exposure to 10 mg/1 indole-3-butyric acid. Auxin source, concentration or exposure time did not greatly affect root formation or morphology, but strongly affected callus production. Shoots infected with Agrobacterium rhizogenes produced massive numbers of fibrous roots, but shoots did not elongate or survive transfer to soil. Shoot hyperhydricity symptoms were reduced by including 1 g/1 activated charcoal in rooting media. The optimal protocol for inducing root formation consisted of a 7-d exposure to 10 mg/l indole-3-butyric acid in root induction media, followed by incubation in media containing 15 g/l sucrose and 1 g/1 activated charcoal for 21 d.Abbreviations IBA
indole-3-butyric acid
- MS
Murashige and Skoog (1962) medium
- NAA
anaphthalene acetic acid
- POP
2,3,5-trichloro--phenoxypropionic acid 相似文献
2.
Gabriella Pasqua Barbara Monacelli Andrea Silvestrini Renato Manganaro 《In vitro cellular & developmental biology. Plant》2001,37(6):763-766
Summary We studied the relationship between root differentiation and the accumulation of essential oils in Angelica archangelica in in vitro cultures and in the intact plant. Root regeneration was obtained using stem and leaf explants subjected to treatment with
the auxins indole-3-butyric acid, indole-3-acetic acid and α-naphthaleneacetic acid. In both stem and leaf explants, treatment
with indole-3-butyric acid induced the highest rhizogenic response in terms of both percentage of explants with roots and
number of roots per explant. Independently of hormonal treatment, stem explants produced a higher average number of roots
per explant. Root meristemoids were already visible at day 7 of culture in the treatments with indole-3-butyric acid and indole-3-acetic
acid; they were formed directly by cambial-cell division. In vitro-regenerated roots retained primary root structure and differentiated only two primary ephemeral ducts in the pericycle; no
accumulation of essential oils was detected. Same-size roots taken from the intact plant showed secondary structure and essential-oil
accumulation. The results of this study suggest that the synthesis and accumulation of essential oils in Angelica archangelica is closely linked to the differentiation of secondary secretory ducts. 相似文献
3.
Mukhopadhyay Madhumita J. Mukhopadhyay Sandip Sen Sumitra 《Plant Cell, Tissue and Organ Culture》2002,69(1):101-104
The present study involves in vitro propagation of Iphigenia indica (Kunth.) through multiplication of whole corms and corm buds. The whole corms produced very small micro-corms, which developed plants individually whereas corm buds multiplied to produce numerous shoots at variable rates in presence of -naphthaleneacetic acid (NAA) and 6-benzylaminopurine (BAP). The best response in corm and bud multiplication was obtained in Murashige and Skoog's basal medium (MS) supplemented with 2.69 M NAA and 8.88 M BAP. The shoots regenerated were further cultured on MS medium containing NAA and indole-3-butyric acid (IBA) for initiation of roots. MS medium with 5.38 M NAA and 4.92 M IBA induced highest percentage of roots (81%) within 2 weeks in culture. 相似文献
4.
In this study, morphological alterations, biomass growth, and secondary metabolite production of genetically transformed hairy
roots ofPanax ginseng C. A. Meyer, were evaluated after administration of plant growth regulators. The addition of benzylamino purine and kinetin
to the culture media increased biomass formation and phenolic compound biosynthesis in the hairy roots. α-Naphthaleneacetic
acid and indole-3-butyric acid inhibited hairy root growth, however, low concentrations of indole-3-acetic acid slightly increased
hairy root growth. Low concentrations of 2,4-Dichlorophenoxyacetic acid profoundly inhibited growth of hairy roots. The addition
of plant growth regulators, such as auxin, did not increase total phenolic compounds in hairy roots that did not contain gibberellic
acid and cytokinins. Callus formation was induced in cultures suspended in liquid medium amended with benzylamino purine and
kinetin. Hairy roots regenerated from these calluses exhibited an active growth pattern with extensive lateral branching in
non-amended medium, similar to the growth pattern of the original hairy roots. 相似文献
5.
Induction and Characterization of Adventitious Roots Directly
from the Explants of <Emphasis Type="Italic">Panax notoginseng</Emphasis> 总被引:4,自引:0,他引:4
Adventitious roots from leafstalks and lateral roots were obtained directly from explants of Panax notoginseng. The lateral root explants were more sensitive to the induction of adventitious roots using indole-3-butyric acid. HPLC analysis
of saponins extracted from the adventitious roots indicated that several protopanaxatriol saponins were present but ginsenoside
Rd was missing, compared with the saponins extracted from the raw herbs. The dry weight of primary adventitious root culture
of Panax notoginseng increased 5.25 times during multiplication in a classical shaking-flask system, suggesting that it is a culture system with
great potential for scale-up.
Revisions requested 13 July 2005; Revisions received 1 September 2005 相似文献
6.
A. Bijelović N. Rosić J. Miljuš-Djukić S. Ninković D. Grubišić 《Biologia Plantarum》2004,48(3):333-338
In vitro root culture of yellow wort (Blackstonia perfoliata (L.) Huds.) was initiated on Murashige and Skoog (MS) medium. In the presence of benzylaminopurine (BAP) numerous adventitious buds formed, which developed into shoots. Presence of indole-3-butyric acid (IBA) in media significantly decreased number of buds, but increased development of lateral roots. On hormone-free medium shoots successfully rooted and developed flowers and viable seeds that formed another generation. Shoot cultures of B. perfoliata inoculated with suspension of Agrobacterium rhizogenes strain A4M70GUS developed hairy roots at 3 weeks and they were cultured on hormone-free MS medium. Spontaneous shoot regeneration occurred in 3 clones. 相似文献
7.
Rooting of blue honeysuckle microshoots 总被引:5,自引:0,他引:5
Rooting of axillary shoots of two blue honeysuckle forms, Lonicera caerulea f. caerulea and L. caerulea f. edulis, was studied.
Both in vitro and ex vitro rooting procedures were used, and the effects of mineral and auxin concentrations of the rooting
media were tested. Reduced mineral nutrient concentrations of modified MS medium allowed more root elongation but did not
affect the primary root number. The rooting percentage was high (≥ 90) in the form caerulea microcuttings but low (< 40) in
the form edulis microcuttings when not treated with auxin. The rooting frequency and primary root number of the form edulis
shoots could be increased up to 100 with 10 roots per microcutting, in the continuous presence of auxin. The continuous auxin
treatments repressed the elongation and increased the diameter of primary roots and induced callus formation at the base of
the shoots. Differences in root systems were related to equimolar concentrations of the auxins indole-3-butyric acid, indole-3-acetic
acid and α-naphthaleneacetic acid, but the differences were diminished after one month ex vitro. After transfer ex vitro,
several of the roots formed in vitro and some microcuttings died. A high rooting percentage and a good ex vitro survival and
root growth of the form edulis microplants were achieved by a 7-day pulse with 4 μM indole-3-butyric acid followed by rooting
ex vitro.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
8.
Calluses were derived from explants of aerial parts of a Duboisia leichhardtii F. Muell. plant. After 3 months of culture we detected small amounts of hyoscyamine and scopolamine in the unorganized calluses, but the amounts decreased until they were undetectable with successive subculture. When shoots were produced from the unorganized calluses, the ability to convert hyoscyamine added into media to scopolamine appeared; when roots were initiated from the shoot-organizing calluses, hyoscyamine, scoporamine, and nicotine were synthesized. Cultured adventitious roots produced these alkaloids and converted exogenous hyoscyamine to scopolamine.Abbreviations NAA
1-naphthaleneacetic acid
- BA
benzyladenine
- IBA
indole-3-butyric acid 相似文献
9.
Exogenous polyamines improve rooting of hazel microshoots 总被引:7,自引:0,他引:7
Manuel Rey Carmen Díaz-Sala Roberto Rodríguez 《Plant Cell, Tissue and Organ Culture》1994,36(3):303-308
A strong positive effect of polyamines on rooting of microshoots of adult hazel (Corylus avellana L., cv. Gironell) is described. The effect of polyamines, both in the root induction solution and in the actual rooting medium, was assessed in order to study the effect on the successive rooting phases. Polyamines improved rooting of indole-3-butyric acid-treated microshoots in a synergistic fashion, perhaps by favouring a better induction of roots, with an acceleration of the response (only half the time required for rooting compared to the control). When applied without indole-3-butyric acid, polyamines had only a limited positive effect on rooting, although longer exposure times and/or higher concentrations could increase their effect. Possible rapid uptake and translocation of polyamines in the xylem in our system is discussed. The results offer a new approach to enhance rooting ability of species that are normally difficult to root.Abbreviations BM
basal medium
- IAA
indole-3-acetic acid
- IBA
indole-3-butyric acid
- NAA
1-naphthaleneacetic acid
- Put
putrescine
- Spd
spermidine
- Spm
spermine 相似文献
10.
Phillip J. Ainsley Graham G. Collins Margaret Sedgley 《In vitro cellular & developmental biology. Plant》2001,37(6):778-785
Summary Shoot cultures of the paper shell almond (Prunus dulcis Mill.) cultivars ‘Ne Plus Ultra’ and ‘Nonpareil’ were subcultured for 4 wk at 4°C on growth regulator-free basal medium under
low light conditions. Elongated shoots were excised and their response to a range of rooting treatments determined. Various
concentrations of indole-3-butyric acid (IBA) and α-naphthaleneacetic acid were compared over a range of incubation periods
to determine the optimum auxin for root formation. In addition, the effect of shoot base shading, phloroglucinol (PG), and
basal salt composition were examined. The treatment resulting in the best rooting of both cultivars was shoot insertion for
12 h into water-agar (0.6% w/v) with 1.0 mM IBA, followed by 2 wk in basal medium without auxin but with 100.0 μM PG. Explants were maintained under dark conditions for 3 d at the start of the treatment period, then exposed to light. Extending
the darkening period did not improve rooting ability. Whilst half-strength Murashige and Skoog basal medium was suitable for
rooting “Ne Plus Ultra’ shoots, full-strength Almehdi and Parfitt medium resulted in the best rooting of ‘Nonpareil’. Under
these conditions, 60.0% of explants developed adventitious roots. 相似文献
11.
BRUCE E. HAISSIG 《Physiologia plantarum》1979,47(1):29-33
Synthetic aryl esters of indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) greatly enhanced adventitious root primordium initiation in bean (Phaseolus vulgaris L. cv. Top Crop) and jack pine (Pinus banksiana Lamb.) cuttings, respectively. Bean cuttings produced 95 to 154% more macroscopically visible root primordia in 2 days when treated with phenyl indole-3-acetate (P-IAA), in comparison with an equal concentration of IAA. Substantial but lesser increases occurred when treatment was done with 3-hydroxyphenyl indole-3-acetate (3HP-IAA). On a molar basis, either P-IAA or 3HP-IAA were 10 or more times as efficient as IAA in inducing adventitious root primordium initiation in bean cuttings. Methyl indole-3-acetate was no more effective than IAA in these tests. Phenyl indole-3-butyrate (P-IBA) consistently enhanced the number of rooted jack pine seedling cuttings by 11 to 12% in comparison with a 27% higher concentration of IBA. The number of elongated roots (2 mm or more) after 5 days was 165 to 276% greater for P-IAA than for IAA-treated bean cuttings. Similar but lesser increases occurred as a result of 3HP-IAA treatment. P-IBA in comparison with IBA treatment did not influence either the number of roots or length of the longest root per rooted jack pine cutting. Enzymes in bean and jack pine cuttings hydrolyzed the aryl esters. However, check experiments showed that initial integrity of the esters was required for enhanced activity in inducing root primordium initiation. Treatment of bean cuttings with hydrolysates of P-IAA, or with IAA and phenol, alone or combined, did not influence root primordium initiation or development in a manner different from treatment with IAA alone. 相似文献
12.
Synergistic effects of plant growth retardants and IBA on the formation of adventitious roots in hypocotyl cuttings of mung bean 总被引:1,自引:0,他引:1
The synergistic effect of plant growth retardants, such as daminozide, paclobutrazol and triadimefon, and of indole-3-butyric acid (IBA) on the formation of adventitious roots in hypocotyl cuttings of mung bean was studied. The three retardants and IBA all stimulated adventitious root growth, but IBA was the most effective. However, mixtures of the retardants with IBA have proven generally more effective than IBA alone in promoting adventitious root formation. When IBA was applied to the hypocotyls one day after cutting preparation followed by the growth retardant on the second day, there were even more adventitious roots produced than if applied in the reverse order. The effectiveness of the treatments were in the order, IBA followed by growth retardant, IBA + growth retardant together, and IBA alone.Abbreviations IBA
indole-3-butyric acid
- GA
gibberellin 相似文献
13.
S. M. Rajaei V. Niknam S. M. Seyedi H. Ebrahimzadeh K. Razavi 《Biologia Plantarum》2009,53(3):523-529
Crocus sativus corms were grown in Perlite and watered by half-strength modified Hoagland nutrient solution containing 0, 50, 100, 150, 200 mM NaCl. Growth parameters
and contents of proteins, proline, polyphenols, minerals and saccharides were studied in fibrous roots, contractile roots,
corms and leaves. All plants remained alive and did not display any sign of foliar damage even at 200 mM NaCl. However, the
salinity decreased growth, relative water content and increased contents of proline and Na+ in all organs. Total protein content was increased in corms and contractile roots but decreased in fibrous roots. Changes
in protein pattern were also observed. Polyphenol content was increased by salinity in all organs except the leaves. As salinity
increased, content of soluble saccharides decreased except in the contractile roots. 相似文献
14.
The plant hormone auxin has been shown to be involved in lateral root development and application of auxins, indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA), increases the number of lateral roots in several plants. We found that the effects of two auxins on lateral root development in the indica rice (Oryza sativa L. cv. IR8) were totally different from each other depending on the application method. When the roots were incubated with an auxin solution, IAA inhibited lateral root development, while IBA was stimulatory. In contrast, when auxin was applied to the shoot, IAA promoted lateral root formation, while IBA did not. The transport of [3H]IAA from shoot to root occurred efficiently (% transported compared to supplied) but that of [3H]IBA did not, which is consistent with the stimulatory effect of IAA on lateral root production when applied to the shoot. The auxin action of IBA has been suggested to be due to its conversion to IAA. However, in rice IAA competitively inhibited the stimulatory effect of IBA on lateral root formation when they were applied to the incubation solution, suggesting that the stimulatory effect of IBA on lateral root development is not through its conversion to IAA. 相似文献
15.
Tang Wei Harris Latoya C. Outhavong Vilay Newton Ronald J. 《Plant Cell, Tissue and Organ Culture》2004,78(3):237-240
The effects of different plant growth regulators on in vitro adventitious shoot formation in Virginia pine (Pinus virginiana Mill.) zygotic embryo explants were quantitatively evaluated. Using Tang and Ouyang (1999) (TE) basal medium supplemented
with 11.4 μM indole-3-acetic acid (IAA) and 2.2 μM N6-benzyladenine (BA), callus was observed after 3–6 weeks of culture. Calluses were transferred to TE basal medium supplemented
with 0.49 μM indole-3-butyric acid (IBA) and 8.8 μM BA for 6–9 weeks, where they produced numerous small shoot primordia.
They were then transferred to TE basal medium supplemented with 0.49 μM IBA and 4.4 μM BA to promote growth and elongation
of adventitious shoots. After elongated shoots were transferred to TE medium containing 0.05 μM α-naphthaleneacetic acid (NAA)
for 6 weeks, adventitious roots were formed. Regenerated plantlets were established in soil in greenhouse. 相似文献
16.
The hairy root culture of Lippia dulcis Trev., Verbenaceae, was established by transformation with Agrobacterium rhizogenes A4. The transformed roots grew well in Murashige and Skoog medium containing 2% sucrose. The roots turned light green when they were cultured under 16 h/day light. The green hairy roots produced the sweet sesquiterpene hernandulcin (ca. 0.25 mg/g dry wt) together with 20 other mono- and sesquiterpenes, while no terpenes were detected in the nontransformed root cultures. The growth and hernandulcin production in the hairy root cultures were influenced by the addition of auxins to the medium. The addition of a low concentration of chitosan (0.2 – 10.0 mg / l) enhanced the production of hernandulcin 5-fold.Abbreviations Cht
chitosan
- IAA
indole-3-acetic acid
- NAA
1-naphthaleneacetic acid
- 2,4-D
2,4-dichlorophenoxyacetic acid
- MS
Murashige and Skoog(1962) 相似文献
17.
Immature embryos of Fagopyrum esculentum cv. Pennquad were isolated from field-grown plants and cultured on media containing a high benzylaminopurine to indole-3-acetic acid ratio. Part of the embryos were grown in the presence of 2,4-dichlorophenoxyacetic acid and kinetin for the first 5 days, and then transferred to benzylaminopurine + indole-3-acetic acid medium. From callus tissues developed on hypocotyls and cotyledons, 3 types of tissue were selected in later subcultures: (a) callus tissue strains that produced buds, (b) embryogenic tissue, and (c) unorganized callus tissue, lacking any organogenic capacity. Pretreatment with 2,4-dichlorophenoxyacetic acid increased the number of explants which gave rise to bud forming and embryogenic tissue, but was not essential for morphogenesis. Somatic embryogenesis was confirmed by histological observation. Plantlets could be easily obtained by inducing adventitious roots on shoots, but spontaneous root development in somatic embryos was infrequent.Abbreviations BAP
benzylaminopurine
- IAA
indole-3-acetic acid
- 2,4-D
dichlorophenoxyacetic acid
- IBA
indole-3-butyric acid 相似文献
18.
Yun-He Li Qi-Zhu Chen Jie-Ning Xiao Yun-Feng Chen Xiao-Ju Li Christian Staehelin Xue-Lin Huang 《Plant Growth Regulation》2008,54(2):165-177
Cotyledon segments derived from zygote embryos of mango (Mangifera indica L. cv. Zihua) were cultured on agar medium for 28 days. Depending on different pre-treatments with plant growth regulators,
two distinct patterns of adventitious roots were observed. A first pattern of adventitious roots was seen at the proximal
cut surface, whereas no roots were formed on the opposite, distal cut surface. The rooting ability depended on the segment
length and was significantly promoted by pre-treatment of embryos with indol-3-acetic acid (IAA) or indole-3-butyric acid
(IBA) for 1 h. A pre-treatment with the auxin transport inhibitor 2,3,5-triiodobenzoic acid (TIBA) completely inhibited adventitious
root formation on proximal cut surfaces. A second pattern of roots was observed on abaxial surfaces of cotyledon segments
when embryos were pre-treated with 2,700 μM 1-naphthalenacetic acid (NAA) for 1 h. Histological observations indicated that
both patterns of adventitious roots originated from parenchymal cells, but developmental directions of the root primordia
were different. A polar auxin transport assay was used to demonstrate transport of [3H] indole-3-acetic acid (IAA) in cotyledon segments from the distal to the proximal cut surface. In conclusion, we suggest
that polar auxin transport plays a role in adventitious root formation at the proximal cut surface, whereas NAA levels (influx
by diffusion; carrier mediated efflux) seem to control development of adventitious roots on the abaxial surface of cotyledon
segments. 相似文献
19.
Aneta Sabovljevic Nedeljka Rosic Teodora Jankovic Dragoljub Grubisic 《In vitro cellular & developmental biology. Plant》2006,42(5):427-431
Summary This study reports the analysis of secondary metabolites of gentiopicrin, swertiamarin, and sweroside in shoot and root cultures
of yellow wort (Blackstonia perfoliata), which were initiated from seeds, grown on Murashige and Skoog (MS) medium. Shoot cultures of B. perfoliata were inoculated with suspension of Agrobacterium rhizogenes strain A4M70GUS and hairy roots appeared at the infected sites after 3 wk of inoculation. Tips of adventitious roots of B. perfoliata were grown on hormone-free MS medium and three clones of the transformed roots regenerated shoots spontaneously. Gentiopicrin,
swertiamarin, and sweroside were detected in both roots and shoots of B. perfoliata in vitro and in vivo, but gentiopicrin was found to be the major compound. The concentration of growth regulator in the medium affected the production
of secoiridoids in B. perfoliata in vitro, where the level of gentiopicrin was higher in plants grown in the presence of indole-3-butyric acid, but the presence of
6-benzylaminopurine was inhibitory to secoiridoid production. 相似文献
20.
Anne Katharina Jäger Brigitte Schottländer Ulla Wagner Smitt Ulf Nyman 《Plant cell reports》1993,12(9):517-520
Cell cultures from different species of the genus Thapsia (Apiaceae) have been investigated. In one 4-yearold line of T. garganica L. spontaneous somatic embryogenesis up to the globular stage occurred in a suspension culture containing 1 mg l–12,4-dichlorophenoxyacetic acid (2,4-D). Also callus cultures of this line, previously maintained on a medium containing 1 mg l–1 2,4-D, when transferred to various media deprived of 2,4-D, produced somatic embryos that developed into plantlets. Cell culture, embryos and regenerated organs were analysed for their content of thapsigargins. The undifferentiated cell culture did not synthezise thapsigargins, but was found to produce a yet unidentified compound not present in planta. White embryos in the pre-cotyledonary stage did not synthezise thapsigargins either, but when the embryos developed to the cotyledonary stage and became green, the synthesis started. Regenerated roots and shoots also contained thapsigargins.Abbreviations BAP
Benzylaminopurine
- 2,4-D
2,4-Dichlorophenoxyacetic acid
- EtOAc
ethyl acetate
- FDA
fluorescein diacetate
- IAA
Indole-3-acetic acid
- IBA
indole-3-butyric acid
- 2-iP
2-isopentenyladenine
- NAA
1-Napthaleneacetic acid 相似文献