Journal ArticleDOI
Micropropagation of the critically endangered Western Australian species, Symonanthus bancroftii (F. Muell.) L. Haegi (Solanaceae)
M. Panaia,M. Panaia,Tissa Senaratna,Eric Bunn,Kingsley W. Dixon,Krishnapillai Sivasithamparam +5 more
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TLDR
Potassium citrate and citric acid (0.1% w/v in a 4:1 ratio) prevented oxidative browning and was superior to the untreated control or other antioxidant treatments tested.Abstract:
A micropropagation protocol was developed for the conservation of the critically endangered Western Australian shrub,Symonanthus bancroftii. It was necessary to screen antioxidant treatments to prevent the occurrence of lethal browning of explants upon excision. Potassium citrate and citric acid (0.1% w/v in a 4:1 ratio) prevented oxidative browning and was superior to the untreated control or other antioxidant treatments tested. Half strength Murashige and Skoog (MS) medium containing 0.5 μM kinetin and 0.25 μM benzyladenine produced three-fold multiplication compared to 1.75×, 1.5×, 1.8× and 1× multiplication for 2.5 μM kinetin + 0.25 μM benzyladenine, 0.5 μM kinetin + 5 μM gibberellic acid, 1 μM kinetin + 3 μM gibberellic acid and half strength MS with no plant growth regulators, over 4 weeks. Root production was achieved with indole-3-butyric acid (IBA) and α-naphthaleneacetic acid (NAA) at 0.5/0.5 μM (31% rooting) and 1.0/1.0 μM (36% rooting), after four weeks. Paclobutrazol (PBZ) at 0, 3.4 (1 mg 1−1), 10.2 (3 mg 1−1), or 17 μM (5 mg 1−1) improved tolerance to desiccation after transfer ofin vitro rooted shoots to soil. PBZ at 10.2 μM increased survival to 90% compared to 50% for those plantlets not treated with PBZ. The acclimatisation period from the glasshouse to the shadehouse was 1 week for plantlets treated with PBZ compared to 4 weeks for plantlets without any PBZ. PBZ at 3.4 μM increased the number of roots per shoot compared to untreated controls.read more
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Journal ArticleDOI
Conservation in vitro of threatened plants - progress in the past decade
Viswambharan Sarasan,Ryan Cripps,Margaret M. Ramsay,Caroline Atherton,Monica Mcmichen,Grace Prendergast,Jennifer K. Rowntree +6 more
TL;DR: Photautotrophic micropropagation has the potential for development as a routine method for the in vitro conservation of endangered plants and the potential applications of cryopreservation are significant in this area.
Journal ArticleDOI
Inhibition of phenylpropanoid biosynthesis in Artemisia annua L.: a novel approach to reduce oxidative browning in plant tissue culture.
TL;DR: Experiments indicate that inhibiting phenylpropanoid biosynthesis with AIP is an effective approach to reduce tissue browning in A. annua and this approach is effective in many species and it could have a wide application in systems where oxidative browning restricts the development of biotechnologies.
Journal ArticleDOI
Efficiency of liquid culture systems over conventional micropropagation: A progress towards commercialization
TL;DR: Micropropagation in bioreactors for optimal plant production depends upon better understanding of physiological and biochemical responses of plant to the signals of culture microenvironment and an optimization of specific physical and chemical culture conditions to control the morphogenesis of plants in liquid culture systems.
Book ChapterDOI
Plant Growth Regulators III : Gibberellins, Ethylene, Abscisic Acid, their Analogues and Inhibitors; Miscellaneous Compounds.
Journal ArticleDOI
The contribution of in vitro technology and cryogenic storage to conservation of indigenous plants
Eric Bunn,Eric Bunn,Shane R. Turner,Shane R. Turner,M. Panaia,M. Panaia,Kingsley W. Dixon,Kingsley W. Dixon +7 more
TL;DR: The role of in vitro and cryogenic research initiatives in botanic gardens for plant biodiversity conservation and restoration is discussed, using examples of successful ex situ conservation through tissue-culture and cryogen-storage research.
References
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Journal ArticleDOI
A revised medium for rapid growth and bio assays with tobacco tissue cultures
Toshio Murashige,Folke Skoog +1 more
TL;DR: In vivo redox biosensing resolves the spatiotemporal dynamics of compartmental responses to local ROS generation and provide a basis for understanding how compartment-specific redox dynamics may operate in retrograde signaling and stress 67 acclimation in plants.
Book
Plant Propagation by Tissue Culture
TL;DR: The Anatomy and Morphology of Tissue Cultured Plants M.V. Moshkov, G. V. Novikova, M. Stasolla, E. Zazimalova and E.F. George reveal the secrets of successful tissue culture and the challenges faced in implementing and sustaining such a system.
Journal ArticleDOI
Paclobutrazol Protects Wheat Seedlings from Heat and Paraquat Injury. Is Detoxification of Active Oxygen Involved
Journal ArticleDOI
The preparation in vitro of chrysanthemum for transplantation to soil
TL;DR: In this article, the authors used paclobutrazol in the rooting medium of Chrysanthemum x morifolium to reduce the wilting of plantlets.
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