Histology of Somatic Embryogenesis from Leaf Explants of the Oil Palm Elaeis guineensis

Schwendiman, Jacques; Pannetier, Catherine; Michaux-Ferrière, Nicole

doi:10.1093/oxfordjournals.aob.a087634

Cited by 101 publications

(73 citation statements)

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“…A similar pattern in the cambiumlike zone of nodular callus derived from perivascular cells, has been described by other authors (Ozias-Akins & Vasil 1982, Ho & Vasil 1983, Schwendiman et al 1988, Buffard-Morel et al 1992, Guerra & Handro 1998. The distal region is formed by potentially detachable cells, either by being converted in somatic embryos or by being exfoliated in root caps.…”

Section: Discussionsupporting

confidence: 77%

“…In both cases the cells of this region exhibited starch grains which were proposed to be somatic embryogenesis markers (Buffard-Morel et al 1992) while in normal roots they are known to act as statholiths (Mauseth 1995). The presence of starch grains in root primordia has also been reported in several other somatic embryogenesis systems (Thomas et al 1972, Street & Withers 1974, Ozias-Akins & Vasil 1982, Schwendiman et al 1988.…”

Section: Discussionsupporting

confidence: 52%

“…In this system, proembryos were observed as early as two days after culture initiation. Studies on somatic embryo development of other species reported significantly longer periods for embryo or embryogenic callus formation, most of them longer than ten days (Ozias-Akins & Vasil 1982, van Hengel et al 1998, Bespalhok Filho & Hattori 1997, Hutchinson et al 1996, Ho & Vasil 1983, Sagare et al 1995, Laparra et al 1997, Guerra & Handro 1998 and some of them reaching up to 40-60 days (Schwendiman et al 1988, Thomas et al 1972.…”

Section: Discussionmentioning

confidence: 99%

“…A similar behavior was reported by Haccius (1978) who observed embryo formation both indirectly from proembryonic cell complexes and directly from single cells. PEMs can be considered as an equivalent of an embryogenic callus in accordance with the results of Ho & Vasil (1983); Schwendiman et al (1988) as well as Buffard-Morel et al (1992) and thus a pathway to indirect embryogenesis.…”

Section: Discussionmentioning

confidence: 99%

“…Histological analysis performed in several plant species showed that somatic embryo development may occur from epidermal (Hutchinson et al 1996, Newman et al 1996, Sagare et al 1995, parenchymatous (Sagare et al 1995) or vascular cells (Ho & Vasil 1983, Schwendiman et al 1988, Buffard-Morel et al 1992, van Hengel et al 1998, Guerra & Handro 1998. Eggplant somatic embryogenesis studies using different growth regulators and various explants including leaves (Gleddie et al 1983, Fillipone & Lurquin 1989, Rao & Singh 1991, cotyledons (Saito & Nishimura 1994), zygotic embryos (Yamada et al 1967) and hypocotyls (Matsuoka & Hinata 1979) have been reported.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

In vitro somatic embryogenesis and adventitious root initiation have a common origin in eggplant (Solanum melongena L.)

Tarré¹,

Magioli²,

Margis‐Pinheiro³

et al. 2004

Rev. bras. Bot.

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-(In vitro somatic embryogenesis and adventitious root initiation have a common origin in eggplant (Solanum melongena L.)). Somatic embryogenesis was induced from cotyledon explants of eggplant cultured on MS medium supplemented with 54 µM NAA. Anatomical analysis of somatic embryo initiation and development was performed during the first four weeks. Proembryo formation was observed after the second day of culture, directly from perivascular cells or via pro-embryogenic masses derived from indeterminate meristematic masses (IMMs) originated in the vascular tissue. Those IMMs also gave rise to root primordia after 10 days of culture. The origin of embryos is discussed as well as the similarities between somatic embryogenesis and adventitious root formation.Key words -anatomy, development, Solanum melongena, somatic embryogenesis RESUMO -(Embriogênese somática in vitro e iniciação de raizes adventícias têm uma origem comum em berinjela (Solanum melongena L.)) A embriogênese somática em berinjela foi induzida a partir de explantes cotiledonares cultivados em meio MS suplementado com 54 µM de ANA. A análise anatômica do início de formação e desenvolvimento de embriões somáticos foi realizada durante as primeiras quatro semanas. A formação de pré-embriões foi observada após o segundo dia de cultura, diretamente a partir de células perivasculares ou a partir de massas pré-embriogênicas derivadas de massas meristemáticas indeterminadas (IMMs) formadas a partir do tecido vascular. As IMMs também deram origem a primórdios radiculares após 10 dias de cultura. A origem dos embriões é discutida, assim como as similaridades entre a formação de embriões somáticos e raízes adventícias.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

In vitro somatic embryogenesis and adventitious root initiation have a common origin in eggplant (Solanum melongena L.)

Tarré¹,

Magioli²,

Margis‐Pinheiro³

et al. 2004

Rev. bras. Bot.

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Origin and Ontogenesis of Somatic Embryos in Heyea Brasiliensis (Euphorbiaceae)

Michaux-Ferrière

Grout

Carron

1992

American J of Botany

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In Hevea, currently described culture conditions allow the induction of two modes of embryogenesis in callus formed on excised portions of the internal integument of immature seeds. One mode is of unicellular origin and is transitory, only resulting in the production of globular proembryos. The other is of multicellular origin and produces embryos. Specific culture conditions appear to favor one or the other mode of development in a given genotype. The ontogenesis of embryos of multicellular origin bypasses the classical stages of zygotic embryogenesis. The structural abnormalities observed in most somatic embryos are probably responsible for the low germination rates obtained.

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Ultrastructure of Early Secondary Embryogenesis by Multicellular and Unicellular Pathways in Cork Oak (Quercus suber L.)

2001

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Histology of Somatic Embryogenesis from Leaf Explants of the Oil Palm Elaeis guineensis

Cited by 101 publications

References 0 publications

In vitro somatic embryogenesis and adventitious root initiation have a common origin in eggplant (Solanum melongena L.)

In vitro somatic embryogenesis and adventitious root initiation have a common origin in eggplant (Solanum melongena L.)

Origin and Ontogenesis of Somatic Embryos in Heyea Brasiliensis (Euphorbiaceae)

Ultrastructure of Early Secondary Embryogenesis by Multicellular and Unicellular Pathways in Cork Oak (Quercus suber L.)

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