Somatic Nuclear Mutations<i>in Vivo</i>and<i>in Vitro</i>in Higher Plants

D’Amato, Francesco

doi:10.1080/00087114.1990.10796998

Cited by 33 publications

(10 citation statements)

References 52 publications

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“…In the majority of plant species, considerable chromosomal instability occurs in populations of somatic cells (Partanen 1965;Torrey 1967;D'Amato 1977D'Amato , 1990). This variability is confined primarily to differentiated cells; with meristems, including the progenitors of germ cells, exhibiting little instability.…”

Section: Somatic Cell Selectionmentioning

confidence: 99%

Tissue Culture in the Improvement of Salt Tolerance in Plants

Hasegawa¹,

Bressan²,

Nelson³

et al. 1994

Monographs on Theoretical and Applied Genetics

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Section: Somatic Cell Selectionmentioning

confidence: 99%

Tissue Culture in the Improvement of Salt Tolerance in Plants

Hasegawa¹,

Bressan²,

Nelson³

et al. 1994

Monographs on Theoretical and Applied Genetics

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“…It is also known that plant cell culture generates genetic variability i.e., somaclonal variation (Larkin and Scowcroft, 1981). The cytological characteristics commonly noticed in somaclonal variation are changes in chromosome number (polyploidy and aneuploidy) and structure (chromosome fragments and bridges), disfunction of mitotic spindle and other cytogenetic alternations (Bayliss, 1980;Lee and Phillips, 1988;D'Amato, 1990). Structural chromosome changes are less common, but in some species they were observed with high frequency (Joachimiak et al, 1993).…”

Section: Introductionmentioning

confidence: 96%

Cytogenetic stability of Centaurea ragusina long-term culture

Radić

Prolić

Pavlica

et al. 2005

Plant Cell Tiss Organ Cult

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Centaurea ragusina L. (Asteraceae) is an endemic Croatian plant species, which developed xeromorphic characteristics as a consequence of its natural environment -vertical limestone cliffs above the Adriatic sea. Cytogenetic status of C. ragusina long-term culture (94th subculture) and C. ragusina seedlings was analysed and compared after 4 weeks of growth. Cytogenetic stability was investigated in root meristem cells of C. ragusina cultured plants originated from Pend -a (cliffs near Dubrovnik) and seedlings originated from three different localities in south Adriatic (Pend -a, Pasjacˇa -cliffs near Dubrovnik and island of Komizˇa) using mitotic index and mitotic and chromosomal abnormalities as parameters. Mitotic indices of cultured plants and 'Pend -a' seedlings were similar and showed significant increase compared to mitotic indices of 'Komizˇa' and 'Pasjacˇa' seedlings. Although the highest number of mitotic abnormalities was recorded in root meristem cells of cultured plants, it was only a bit higher than in root tips of 'Pasjacˇa' and 'Pend -a' seedlings, while that of 'Komizˇa' was two times lower compared to cultured plants. Pattern of analysed mitotic abnormalities was very similar in root tips of cultured plants and 'Pasjacˇa' and 'Pend -a' seedlings, with exception of 'Komizˇa' seedlings. Presented results suggest that long-term cultivation of C. ragusina has almost no effect on culture ageing considering similar distribution of scored mitotic abnormalities as in 'Pend -a' and 'Pasjacˇa' seedlings.

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“…Dedifferentiating explant tissue then composes a very heterogeneous cell population, some variation of which may reflect pre-existing variation of the in vivo plant tissue (diploidy, polysomaty, aneusomaty) . However, additional variability may arise de novo from nuclear phenomena during callus induction and growth such as endoreduplication followed by mitosis, differential DNA replication (amplification) and abnormal spindle function or chromosome movement (Bennici et al ., 1968 ;Parenti et al ., 1973 ;Cionini et al ., 1978 ;Bayliss, 1980;D'Amato et al ., 1980D'Amato et al ., , 1990Cavallini et al ., 1986) .…”

Section: Discussionmentioning

confidence: 99%

In vitro morphogenetic capacity of Nicotiana tabacum L. var. BEL W3 upon cyclic culture and regeneration

Schiff

Bennici

1994

Euphytica

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Variation in the capacity to regenerate shoots and morphogenetic potential were investigated by cyclic culture and regeneration of Nicotiana tabacum var. BEL W3 . Explants were excised from different shoots formed by the same callus line . Differences in the organogenetic in vitro response among regenerated plantlets was observed in two subsequent regenerate `generations' . A progressive decrease of the regenerative capacity was observed across callus line `generations' .

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Somatic Nuclear Mutationsin Vivoandin Vitroin Higher Plants

Cited by 33 publications

References 52 publications

Tissue Culture in the Improvement of Salt Tolerance in Plants

Tissue Culture in the Improvement of Salt Tolerance in Plants

Cytogenetic stability of Centaurea ragusina long-term culture

In vitro morphogenetic capacity of Nicotiana tabacum L. var. BEL W3 upon cyclic culture and regeneration

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