NDLI: Protoplast regeneration from gametophytes and sporophytes of some species in the order Laminariales (Phaeophyceae)

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Protoplast regeneration from gametophytes and sporophytes of some species in the order Laminariales (Phaeophyceae)

Content Provider	Springer Nature Link
Author	Benet, H. Ar Gall, E. Asensi, A. Kloareg, B.
Copyright Year	1997
Abstract	Protoplasts were isolated from sporophytes and from gametophyte cultures of several species in the order Laminariales. For each example, the isolation and culture procedures were investigated systematically, to identify conditions leading to plant regeneration. After dedifferentiation through a filamentous stage, protoplasts isolated from adultLaminaria saccharina sporophytes regenerated polystichous bladelets. In contrast, cells isolated fromLaminaria digitata sporophytes proved recalcitrant in culture, except when the donor plants were undifferentiated sporelings. The most critical factors for protoplast development were the origin of explants, the osmoticum used for cell isolation, cultivation in plain seawater, and the absence of stress during the first two weeks of culture. We also found that protoplast isolation from the sporophytes of members of the Laminariales results in the release of hydrogen peroxide, up to 5–120 μM final concentration in the macerating medium, a characteristic which may be related to protoplast recalcitrance. Protoplasts isolated from the gametophytic phase readily regenerated into normal gametophytes, capable of gametogenesis and producing sporophytes by fertilization.
Starting Page	39
Ending Page	48
Page Count	10
File Format	PDF
ISSN	0033183X
Journal	Protoplasma
Volume Number	199
Issue Number	1-2
e-ISSN	16156102
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-01-01
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Laminariales Protoplasts Regeneration Oxidative stress Cell Biology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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