Adventitious Bud Induction by Protein Kinase C Activators in Torenia Stem Segments.

Ishioka, Nahoko; Tanimoto, Shizufumi

doi:10.5511/plantbiotechnology1984.9.86

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…Physiological studies have shown that PMA can also trigger developmental processes (e.g. the initiation of adventitious buds in Torenia fournieri stem segments through the induction of meristematic divisions in the epidermis (52). Although these experiments revealed that PMA affects plant cell biology, its mode of action remains elusive.…”

Section: Discussionmentioning

confidence: 99%

AtDGK2, a Novel Diacylglycerol Kinase from Arabidopsis thaliana, Phosphorylates 1-Stearoyl-2-arachidonoyl-sn-glycerol and 1,2-Dioleoyl-sn-glycerol and Exhibits Cold-inducible Gene Expression

Gómez-Meriño

Brearley

Ornatowska

et al. 2004

Journal of Biological Chemistry

117

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Section: Discussionmentioning

confidence: 99%

AtDGK2, a Novel Diacylglycerol Kinase from Arabidopsis thaliana, Phosphorylates 1-Stearoyl-2-arachidonoyl-sn-glycerol and 1,2-Dioleoyl-sn-glycerol and Exhibits Cold-inducible Gene Expression

Gómez-Meriño

Brearley

Ornatowska

et al. 2004

Journal of Biological Chemistry

117

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“…In addition, DAG has not been shown to activate any purified plant protein kinase. Although different effects of the DAG analogue phorbol myristate acetate have been described [154][155], 20 their relation to PI-PLC activity and DAG action remains to be established. Thus, the canonical role of DAG as a protein kinase activator in plants is controversial.…”

Section: Diacylglycerolmentioning

confidence: 99%

Plant phosphoinositide-dependent phospholipases C: Variations around a canonical theme

et al. 2014

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Phosphoinositide-specific phospholipase C (PI-PLC) cleaves, in a Ca(2+)-dependent manner, phosphatidylinositol-4,5-bisphosphate (PI-4,5-P2) into diacylglycerol (DAG) and inositol triphosphate (IP3). PI-PLCs are multidomain proteins that are structurally related to the PI-PLCζs, the simplest animal PI-PLCs. Like these animal counterparts, they are only composed of EF-hand, X/Y and C2 domains. However, plant PI-PLCs do not have a conventional EF-hand domain since they are often truncated, while some PI-PLCs have no EF-hand domain at all. Despite this simple structure, plant PI-PLCs are involved in many essential plant processes, either associated with development or in response to environmental stresses. The action of PI-PLCs relies on the mediators they produce. In plants, IP3 does not seem to be the sole active soluble molecule. Inositol pentakisphosphate (IP5) and inositol hexakisphosphate (IP6) also transmit signals, thus highlighting the importance of coupling PI-PLC action with inositol-phosphate kinases and phosphatases. PI-PLCs also produce a lipid molecule, but plant PI-PLC pathways show a peculiarity in that the active lipid does not appear to be DAG but its phosphorylated form, phosphatidic acid (PA). Besides, PI-PLCs can also act by altering their substrate levels. Taken together, plant PI-PLCs show functional differences when compared to their animal counterparts. However, they act on similar general signalling pathways including calcium homeostasis and cell phosphoproteome. Several important questions remain unanswered. The cross-talk between the soluble and lipid mediators generated by plant PI-PLCs is not understood and how the coupling between PI-PLCs and inositol-kinases or DAG-kinases is carried out remains to be established.

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“…Few reports are available which uses tissue culture techniques for micropropagation (Tanimoto and Harada, 1986;Kobayashi et al, 1995) and genetic transformation in Torenia fournieri (Aida et al, 2000;Li et al, 2006;Li et al, 2007). It has been also reported that the stem segment of Torenia fournieri can regenerate adventitious buds and axillary shoots in in vitro propagation (Ishioka and Tanimoto, 1992). Plants regenerated from nodal segments are seen to be one of the most promising methods for propagating a specific variety that is true to type (Alam et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

In vitro mass propagation of flowering plant Torenia (Torenia fournieri Lind.) through nodal segment

Islam¹,

Kabir²,

Das³

et al. 2022

GSC Biol. and Pharm. Sci.

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Torenia fournieri is an important ornamental plant in Bangladesh that can grow in a variety of soils in moist areas. It is an extensively studied plant species to investigate fertilization and movement of chromosome. This investigation was carried out to establish a suitable protocol for large scale in vitro regeneration. In vitro mass propagation is one of the best biotechnological methods that can be ensured rapid multiplication of disease-free propagules and genetically identical plant production for plant breeding. In vitro plant regeneration in Torenia was obtained on MS medium supplemented with 2.0 mg/l BA using nodal segments as explants. Maximum 95% of the explants were produced multiple shoots in this medium. The maximum number (12) of shoot per explant and the maximum shoot length of 5.5 cm were observed after 60 days of culture. The well-rooted were found when strong and healthy shoots were transferred into half strength of MS+ 1.0 mg/l IBA. The maximum number (18) of root per shoot and the maximum root length of 4.83 cm were recorded in this medium after 30 days of culture whilst 90% of shoots induced root. In vitro raised plantlets did not show any morphological variation and 90% of plantlets was survived in the natural environment. In this study, rapid multiplication of planting material in Torenia through in vitro propagation techniques such as shoot initiation, multiplication, rooting, hardening and optimizing the concentrations and combinations of plant growth regulators is developed. This regeneration protocol will be helpful in in vitro mutagenesis technique to create new variation of this plant within short time cycle.

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Adventitious Bud Induction by Protein Kinase C Activators in Torenia Stem Segments.

Cited by 3 publications

References 1 publication

AtDGK2, a Novel Diacylglycerol Kinase from Arabidopsis thaliana, Phosphorylates 1-Stearoyl-2-arachidonoyl-sn-glycerol and 1,2-Dioleoyl-sn-glycerol and Exhibits Cold-inducible Gene Expression

AtDGK2, a Novel Diacylglycerol Kinase from Arabidopsis thaliana, Phosphorylates 1-Stearoyl-2-arachidonoyl-sn-glycerol and 1,2-Dioleoyl-sn-glycerol and Exhibits Cold-inducible Gene Expression

Plant phosphoinositide-dependent phospholipases C: Variations around a canonical theme

In vitro mass propagation of flowering plant Torenia (Torenia fournieri Lind.) through nodal segment

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