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Cryopreservation and storage of embryogenic callus cultures of several Citrus species and cultivars

Identifieur interne : 003377 ( Main/Exploration ); précédent : 003376; suivant : 003378

Cryopreservation and storage of embryogenic callus cultures of several Citrus species and cultivars

Auteurs : R. M. Perez [Espagne] ; L. Navarro [Espagne] ; N. Duran-Vila [Espagne]

Source :

RBID : Pascal:98-0058421

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English descriptors

Abstract

Nucellus-derived embryogenic callus cultures of Salustiana sweet orange were subjected to cryoconser-vation assays. Cryoprotection with 10%(vol/vol) dimethylsulfoxide, freezing by slow cooling and thawing by fast warming was suitable to recover viable growing cultures and whole plants through embryogenesis. Evaluation of liquid phase R1 and solid phase R2 cooling rates using a programmable freezing unit indicated that 100% of embryogenic cultures survived when frozen using a range of cooling rates (R1 not above 0.5°C min-1 and R2 not above 1°C min1) and thawed by fast warming. Storage up to 2 years in liquid nitrogen did not affect the growth of the cryopreserved cultures and the recovery of whole plants. Cultures of four cultivars of sweet orange (C. sinensis Osb.), three cultivars of grapefruit (C. paradisi Macf.), and one cultivar each of lemon [C. limon (L.) Burm. f.], Cleo-patra mandarin (C. reshni Hort. ex Tan.), sour orange (C. aurantium L.) and Mexican lime [C. aurantifolia (Christm.) Swing.] have been successfully cryopreserved. Problems using a viability assessment using fluorescein diacetate staining are discussed.


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Le document en format XML

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<country>Espagne</country>
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<term>Callus</term>
<term>Citrus aurantifolia</term>
<term>Citrus aurantium</term>
<term>Citrus fruit</term>
<term>Citrus limon</term>
<term>Citrus paradisi</term>
<term>Citrus sinensis</term>
<term>Cryogenic storage</term>
<term>Cryopreservation</term>
<term>Embryo</term>
<term>Embryo culture</term>
<term>Embryonic development</term>
<term>Freeze thaw cycle</term>
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<term>Performance evaluation</term>
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<term>Embryon</term>
<term>Stockage cryogénique</term>
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<term>Citrus paradisi</term>
<term>Citrus limon</term>
<term>Citrus aurantium</term>
<term>Citrus aurantifolia</term>
<term>Citrus sinensis</term>
<term>Cryoconservation</term>
<term>Cal</term>
<term>Développement embryonnaire</term>
<term>Evaluation performance</term>
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<div type="abstract" xml:lang="en">Nucellus-derived embryogenic callus cultures of Salustiana sweet orange were subjected to cryoconser-vation assays. Cryoprotection with 10%(vol/vol) dimethylsulfoxide, freezing by slow cooling and thawing by fast warming was suitable to recover viable growing cultures and whole plants through embryogenesis. Evaluation of liquid phase R
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and solid phase R
<sub>2</sub>
cooling rates using a programmable freezing unit indicated that 100% of embryogenic cultures survived when frozen using a range of cooling rates (R
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not above 0.5°C min
<sup>-1</sup>
and R
<sub>2</sub>
not above 1°C min
<sup>1</sup>
) and thawed by fast warming. Storage up to 2 years in liquid nitrogen did not affect the growth of the cryopreserved cultures and the recovery of whole plants. Cultures of four cultivars of sweet orange (C. sinensis Osb.), three cultivars of grapefruit (C. paradisi Macf.), and one cultivar each of lemon [C. limon (L.) Burm. f.], Cleo-patra mandarin (C. reshni Hort. ex Tan.), sour orange (C. aurantium L.) and Mexican lime [C. aurantifolia (Christm.) Swing.] have been successfully cryopreserved. Problems using a viability assessment using fluorescein diacetate staining are discussed.</div>
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