Tradescantia bioassays as monitoring systems for environmental mutagenesis: a review.

RODRIGUES, G. S.; MA, T.; PIMENTEL, D.; WEINSTEIN, L. H.

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DC Field	Value	Language
dc.contributor.author	RODRIGUES, G. S.	pt_BR
dc.contributor.author	MA, T.	pt_BR
dc.contributor.author	PIMENTEL, D.	pt_BR
dc.contributor.author	WEINSTEIN, L. H.	pt_BR
dc.date.accessioned	2017-03-01T23:44:20Z	-
dc.date.available	2017-03-01T23:44:20Z	-
dc.date.created	1997-10-22	pt_BR
dc.date.issued	1997	pt_BR
dc.identifier.citation	Critical Reviews in Plant Sciences, v.16, n.4, p.325-359, 1997.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/12754	pt_BR
dc.description	Since the early studies on the genetic effects of chemical and physical agents, species and clones of Tradescantia have been used as experimental subjects, by virtue of a series of favorable genetic characteristics. Bearing just six pairs (2n = 12) of large, easily observable chromosomes, cells from almost every part of the plant, from the root tips to the developing pollen tube, yield excellent material for cytogenetic studies. As a consequence of the intensive use of Tradescantia in genetic studies, a series of genetic characteristics have been found that offer opportunities for the detection of agents affecting the stability of the genome. At least five such characteristics have been selected as endpoints for the establishment of assays to evaluate mutagenesis. Three of these, root-tip mitosis, pollen-tube, and microspore mitosis are essentially chromosome aberration assays, wherein one observes and evaluates the visible damage in the chromosomes. A fourth, the stamen-hair mutation assay (Trad-SHM), is a point mutation mitotic assay based on the expression of a recessive gene for flower color in heterozygous plants. The fifth assay is a cytogenetic test based on the formation of micronuclei (Trad-MCN) that result from chromosome breakage in the meiotic pollen mother cells. This article examines the characteristics and fundamentals of the Trad-MCN and the Trad-SHM assays and reviews the results obtained to date with these systems in the assessment of environmental mutagenesis.	pt_BR
dc.language.iso	eng	eng
dc.rights	openAccess	eng
dc.subject	Bioindicator	pt_BR
dc.subject	Atmospheric pollutants	pt_BR
dc.subject	Soil contaminants	pt_BR
dc.title	Tradescantia bioassays as monitoring systems for environmental mutagenesis: a review.	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2017-03-01T23:44:20Z	pt_BR
dc.subject.nalthesaurus	genotoxicity	pt_BR
dc.subject.nalthesaurus	remediation	pt_BR
dc.subject.nalthesaurus	soil amendments	pt_BR
dc.subject.nalthesaurus	water pollution	pt_BR
riaa.ainfo.id	12754	pt_BR
riaa.ainfo.lastupdate	2017-03-01	pt_BR
dc.contributor.institution	GERALDO STACHETTI RODRIGUES, CNPMA; TE-HSIU MA, WESTERN ILLINOIS UNIVERSITY; DAVID PIMENTEL, CORNELL UNIVERSITY/NY; LEONARD H. WEINSTEIN, BOYCE THOMPSON INSTITUTE FOR PLANT RESEARCH/NY.	pt_BR
Appears in Collections:	Artigo em periódico indexado (CNPMA)

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