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An appreciation of Professor Maciej Zenkteler, architect of plant in vitro culture and experimental embryology in Poland

100%

Kuta E.

Acta Biologica Cracoviensia. Series Botanica

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2018

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tom 60

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nr 2

2

To our Professor, Maciej Zenkteler

63%

Mol R.

Biological Bulletin of Poznań

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2001

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tom 38

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nr 1

3

Embryological aspects of in vitro gynogenesis in plant organ cultures

51%

Mol R.

Acta Biologica Cracoviensia. Series Botanica

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1999

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tom 41

The paper reviews female gametophyte development in vitro, the pathways of gynogenetic embryogeny, and autonomous endosperm development in vitro, and presents some implications for future investigation of apomictic processes. In most species studied so far, the pattern of embryo sac development was not altered by in vitro conditions, and some rare deviations could be additional sources of gynogenetic embryos. Meiosis in vitro resulted in megaspore formation followed by embryo sac development or direct embryogenesis. Gynogenesis in vitro occurs via various embryological processes. Embryos developed parthenogenetically from egg cells in twelve species. Apogamic development from the synergid or from antipodal cells was found in six species. Early development of gynogenetic embryos showed some similarities to zygotic embryogenesis, but then the embryos often remained undifferentiated or formed microcalli and protocorm-like structures. In nine species the central cell in ovary/ovule cultures was sporadically stimulated to divide into free-nuclear endosperm. Generally only one gynogenetic structure developed per embryo sac, and no embryos appeared in ovules containing autonomous endosperm. Cellular programs for the autonomous development of endosperm and embryo seem quite different or even competitive in vitro. Various approaches should be taken in future research on apomixis. Classical and novel cytological methods, and in vitro organ and cell cultures should be combined with molecular techniques and genetic studies.

4

The possible role of cell cycle stage in mammalian cloning

51%

Modlinski J. A., Grabarek J., Plusa B., Karasiewicz J.

Journal of Applied Genetics

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2001

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tom 42

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nr 2

5

Allogamy in Viola odorata L.

51%

Banasinska A., Kuta E.

Acta Biologica Cracoviensia. Series Botanica

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1996

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tom 38

Allogamy in chasmogamous flowers of V. odorata (2n = 20) was detected using classical embryology methods and crossing experiments. 48 chasmogamous flowers left to open pollination were analysed. Out of 372 ovules normal, 8-nucleate ESs were observed in 52%; in 40% of ovules zygotes or embryos with endosperm occurred; 8% of ovules studied contained ESs in earlier stages of development. Additionally in several ovules some abnormalities concerning ES structure ahd the origin of embryos were detected. Isolation of 20 chasmogamous flower buds proved that self-fertilization did not occur without the pollen vector. Cross-pollination experiments involving both intra- and inter-population pollination showed that chasmogamous flowers yealded viable seeds after cross-fertilization. Seed germination occurs only after scarification. Scarified seeds germinated under in vitro culture conditions and developed into seedlings. Genetical structure of V. odorata populations depends on many factors discussed in this paper.

Ograniczanie wyników

3 Acta Biologica Cracoviensia. Series Botanica

1 Biological Bulletin of Poznań

1 Journal of Applied Genetics

2 Kuta E.

2 Mol R.

1 Banasinska A.

1 Grabarek J.

1 Karasiewicz J.

1 Modlinski J. A.

1 Plusa B.

1 2018

2 2001

1 1999

1 1996

An appreciation of Professor Maciej Zenkteler, architect of plant in vitro culture and experimental embryology in Poland

To our Professor, Maciej Zenkteler

Embryological aspects of in vitro gynogenesis in plant organ cultures

The possible role of cell cycle stage in mammalian cloning

Allogamy in Viola odorata L.