scholarly journals Factors influencing somatic embryogenesis and regeneration ability in somatic tissue culture of spring and winter rye

2008 ◽  
Vol 13 (4) ◽  
pp. 363 ◽  
Author(s):  
R. MA ◽  
S. PULLI
Keyword(s):  
Tissue Culture ◽  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Developmental Stage ◽  
Embryogenic Callus ◽  
Immature Embryo ◽  
Green Plant ◽  
Somatic Tissue ◽  
Winter Rye ◽  
Effi Ciency

Rye is an important crop in Northern and Eastern Europe. However, the application of various biotechnologies in rye breeding has been limited duo to its recalcitrant in tissue culture. In order to improve somatic tissue effi ciency, key factors affecting somatic embryogenesis and reproducible green plant regeneration of rye (Secale cereale L.) were evaluated and optimised. In this study, a total 27 rye genotypes including 10 spring and 17 winter genotypes were involved in the investigation. Genotype, culture medium, sugar, gel agent and auxin infl uenced somatic embryogenesis of immature embryo signifi cantly. One-two weeks cold pretreatment of young embryo enhanced somatic embryogenesis and green plant regeneration. In culture of immature embryos, infl orescences and leaf segments of the seedlings, explants signifi cantly infl uenced the culture effi ciency. Highest embryogenic callus yield resulted from rye immature embryo as explant compared to young infl orescence and leaf segment of seedling. Developmental stage of embryo played an important role in somatic embryogenesis. Late spherical coleoptile stage (embryo size 0.5–1mm in length) was optimal developmental stage of immature embryo for culture. Morphogenetic potential of embryogenic callus decreased with an increasing number of subcultures, and this ability could be maintained in vitro for a maximum of 8 months of culturing.;

Optimisation of Tissue Culture Conditions for Transformation Studies Using Immature Embryos of Australian Barley Cultivars

1995 ◽  
Vol 43 (5) ◽  
pp. 499 ◽  
Author(s):  
AM Walmsley ◽  
RJ Henry ◽  
RG Birch
Keyword(s):  
Tissue Culture ◽  
Plant Regeneration ◽  
Culture Medium ◽  
Immature Embryo ◽  
Culture Conditions ◽  
Medium Composition ◽  
Immature Embryos ◽  
Systematic Testing ◽  
Barley Cultivars ◽  
Key Variables

Eight Australian barley cultivars were tested for efficiency of embryonic callus initiation and plant regeneration, from immature embryo explants in tissue culture. Optimisation of tissue culture conditions was performed for cultivars Bandulla, Clipper, Schooner and Tallon in an attempt to increase regeneration frequencies to levels suitable for genetic engineering of barley. Variables tested were 2,4-D concentration, salt composition, carbon source and immature embryo explant. Optimal culture medium composition varied between cultivars. Shoot regeneration rates from culture of isolated scutellar tissues were low for all four cultivars. Halved, immature embryos produced most shoots for cultivars Clipper, Schooner and Tallon, whereas Bandulla performed best with entire immature embryo explants. Clipper (a malting barley) and Bandulla (a feed barley) are suggested as model Australian cultivars for transformation studies. Immature embryos of Bandulla produced an average of 5.3 shoots and Clipper 10.1 shoots per embryo under optimal conditions. Our results show that rates of somatic embryo and plant regeneration sufficient for use in transformation studies can be achieved for diverse Australian Barley cultivars, through systematic testing of a range of key variables including explant type and medium composition.

scholarly journals Coffee Yield and Mineral Cycle in Intercropping of Coffea canephora and Some Species of Timber Shade Trees

2008 ◽  
Vol 24 (1) ◽  
Author(s):  
Adi Prawoto
Keyword(s):  
Tissue Culture ◽  
Somatic Embryogenesis ◽  
Phenolic Compound ◽  
Embryogenic Callus ◽  
Theobroma Cacao ◽  
Coffea Canephora ◽  
Coffee Yield ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Theobroma Cacao L

Cocoa (Theobroma cacao L.) like most tropical trees is recalcitrant in tissue culture. Somatic embryogenesis is generally efficient micropropagation technique to multiply elite material. However, Somatic embryogenesis in cocoa is difficult and this species is considered as recalcitrant. One of the factors often considered as a component of in vitro recalsitrance is a high phenolic content and oxidation of these compounds. In cocoa tissue culture accumulate large amounts of poliphenolics compounds which probably impair further development. This study was conducted to investigate the composition of phenolic compounds in cocoa flower and leaves, and their changes troughout the somatic embryogenesis process. Calli were induced in cacao floral and leaves explants on a half-strenght Murashige and Skoog medium containing 30 g/L Glucose and combination of 2,4 dichlorophenoxyacetic acid (2,4 D) with kinetin (kin). Total polyphenol content was observed on Sulawesi 1 cocoa clone. Embryogenic and non-embryogenic callus were also compared. The percentage of callus production from flower tissue is 85%, percentage of embryogenic callus 40 %, although  the percentage of somatic embryo production from embryogenic callus callus is 70%. The conservation of callus into somatic embryos followed by decline in phenol content and an increase in peroxidase. The synthesis kinetics for these compounds in calli, under different somatic embryogenesis conditions, revealed a higher concentration under non-embryogenic conditions. So that, phenolic compound can influence the production of calli and an absence the phenolic compound can enhance production of somatic embryo.Kata kunci: Theobroma cacao L., polifenol, embrio somatik, kalus, flavonoid, katekin, in vitro recalcitance

scholarly journals A REVIEW: MICROPROPAGATION OF PHALAENOPSIS sp FROM LEAF AND FLOWER STALK EXPLANTS

2017 ◽  
Vol 17 (2) ◽  
pp. 91
Author(s):  
Meutia Zahara
Keyword(s):  
Tissue Culture ◽  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Plant Cell ◽  
Direct Somatic Embryogenesis ◽  
Direct Shoot Regeneration ◽  
Flower Stalk ◽  
Micro Propagation ◽  
Direct Shoot

Abstract Phalaenopsis orchids are recognized as the most popular orchid genus in the world, especially in horticultural industry due to their large, colorful, and durable flowers as well as their wider adaptability to room conditions. The characteristics of seedling propagated by vegetative means are not uniform; therefore, propagation through tissue culture is desirable. Although the micro propagation of Phalaenopsis has shown very good development, but the wide spread of micro propagation still limited due some problems such as the exudation of phenolic compounds, the PGR concentration, the media used, somaclonal variation, the chosen explants, etc. This paper endeavor to include some important investigations based on the common explants used; leaf and flower stalk. Keywords: Micropropagation, Phalaenopsis, leaf explant, flower stalk ReferencesAnonymous. Orchid (Orchidaceae). Diakes tanggal 13 Januari 2013 dari http://www.rainforest-alliance.org/kids/species-profiles/orchid. Rainforest Alliance. 2002.Pillon, Y.; Chase, M. W.Taxonomic exaggeration and its effects on orchid conservation. Conservation Biology. 2007, 21, 263–265.Thengane, S. R.; Deodhar, S. R.; Bhosle, S. V.; Rawal, S. K. Direct somatic embryogenesis and plant regenaration in Garciniaindica Chois’. Current Science. 2006, 91(8), 1074-1078.Yuswanti, H.; Dharma, I. P.; Utama. ; Wiraatmaja, I. W. Mikropropagasi anggrek Phalaenopsis dengan menggunakan eksplan tangkai bunga. AGROTROP. 2015, 5(2): 161-166.Raynalta, E.; Sukma, D.  Pengaruh komposisi media dalam perbanyakan protocorm like bodies, pertumbuhan plantlet, dan aklimatisasi Phalaenopsis amabilis. J. Hort. Indonesia. 2013, 4(3): 131-139.Kosir, P.; Skof, S.; Luthar, Z. Direct Shoot Regeneration from Nodes of Phalaenopsis of Orchids. Acta Agriculturae Slovenica. 2004, 83, 233–242.Arditti, J. R. ; Ernst. Micropropagation of Orchids. Wiley-Interscience. New York, 1993.Park, Y. S.;Kakuta, S.; Kano, A.; Okabe, M.Efficient propagation of protocorm-like bodies of Phalaenopsis in liquid medium. Plant Cell, Tissue and Organ Culture. 1996, 45, 79–85.Park, S. Y. ; Yeung, E. C.; Chakrabarty, D. ; Paek, K. Y. An efficient direct induction of protocorm-like bodies from leaf subepidermal cells of Doritaenopsis hybrid using thin-section culture. Plant Cell Reports. 2002, 21, 46–51.Zahara, M.; Datta, A.; Boonkorkaew, P. Effects of sucrose, carrot juice and culture media on growth and net CO2 exchange rate in Phalaenopsis hybrid ‘Pink’. ScientiaHorticulturae. 2016,205, 17–24.Hee, K. H.; Loh, C. S.; Yeoh, H. H. In vitro flowering and rapid in vitro embryo production in Dendrobium Chao Praya Smile (Orchidaceae). Plant Cell Reports. 2007, 26, 2055–2062.Kannan, N. An in vitro study on micropropagation of Cymbidium orchids. Current Biotica. 2009, 3, 244–250.Steward, Jr. N. C. Plant Biotechnology and Genetics. Willey, A john Willey & Sons, INC., Publication. 2008.George, E. F.; Sherington, P. D.Biotechnology by tissue culture. Exegetics Ltd. 1994.Nursyamsi. Teknik kultur jaringan sebagai alternatif perbanyakan tanaman untuk mendukung rehabilitasi lahan. Makalah pada ekspose hasil-hasil penelitian balai penelitian kehutanan makasar. Makasar, 2010.Aditi, J. F. L. S.; Krikorian, A. D. Orchid mircropropagation: the path from laboratory to commercialization and an account of several unappreciated investigators. Botanical Journal of of the Linnean Society. 1996, 122: 183-241.Gunawan, L. W. Teknik Kultur Jaringan Tanaman. Pusat Antar Universitas (PAU) Bioteknologi IPB. 1998. Bogor.Chugh, S. Guha, S.; Rao, I. U. Micropropagation of orchids: A review on the potential of different explants. Scientia Horticulturae. 2009, 122, 507–520.Ramdan. Kultur daun dan pangkal batang in vitro anggrek bulan raksasa (Phalaenopsis gigantea J.J.Smith) pada beberapa media kultur jaringan. Departemen agronomi dan hortikultura, Fakultas pertanian IPB. 2011.Latip, M. A. R.; Murdad, Z. A.; Aziz, L. H.; Ting, L. M.; Govindasamy.; R. Pipin. Effects of N6-Benzyladenine and Thidiazuron on Poliferation of Phalaenopsis gigantea Protocorm. AsPac J. Mol. Biol. Biotechnol. 2010, 18(1): 217-220 p.Niknejad, A.; Kadir, M. A.; Kadzimin, B. S. In vitro plant regeneration from protocorms-like bodies (PLBs) and callus of Phalaenopsis gigantea (Epidendroidaceae: Orchidaceae). African Journal of Biotechnology.2010, 10, 11808–11816.Chen, J. T.; Chang, W. C. Direct somatic embryogenesis and plant regeneration from leaf explants of Phalaenopsis amabilis. Biologia Plantarum. 2006, 50, 169–173.Zahara, M. Disertasi doktor: The Effects of Plant Growth Regulators and Natural Additives on Direct Shoot Regeneration and Plantlet Growth of Phalaenopsis hybrid ‘Pink’. Asian Institute of Technology, Pathumthani. Thailand. 2016.Xu, C. J.; Li, H.; Zhang, M. G. Preliminary studies on the elements of browning and the changes in cellular texture of leaf explant browning in Phalaenopsis. Acta Horticulturae Sinica. 2005, 32, 1111–1113.Tokuhara, K; Mii, M. Induction of embryonic callus and cell suspension culture from shoot tips excised from flower stalk buds of Phalaenopsis (Orchidaceae). In Vitro Cellular & Developmental Biology–Plant. 2001, 37, 457–461Balilashaki, K.; Naderi, R.; Kalantari, S.; Soorni, A. Mircropropagation of Phalaenopsis amabilis cv Cool ‘Breeze’ with using flower stakl nodes and leaves of sterile obtained from node cultures. IJFAS, 2014.Semiarti, E.; Indrianto, A.; Purwanto, A. Agrobacterium-Mediated transformation of Indonesian orchids for  micropropagation, genetic transformation, Prof. MarÃa Alvarez (Ed.), ISBN: 978-953-307-364-4, InTech, 2011. Available from: http://www.intechopen.com/books/ genetic-transformation/agrobacterium-mediated-transformation-ofindonesian-orchids-for-micropropagation.

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