Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies

Detalhes bibliográficos
Autor(a) principal: Grando,Magali Ferrari
Data de Publicação: 1997
Outros Autores: Moraes-Fernandes,Maria Irene B. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Genetics
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300018
Resumo: This article discusses, from the standpoint of cellular biology, the deterministic and indeterministic androgenesis theories. The role of the vacuole and of various types of stresses on deviation of the microspore from normal development and the point where androgenetic competence is acquired are examined. Based on extensive literature review and data on wheat studies from our laboratory, a model for androgenetic capacity of pollen grain is proposed. A two point deterministic model for in vitro androgenesis is our proposal for acquisition of androgenetic potential of the pollen grain: the first switch point would be early meiosis and the second switch point the uninucleate pollen stage, because the elimination of cytoplasmatic sporophytic determinants takes place at those two strategic moments. Any abnormality in this process allowing the maintenance of sporophytic informational molecules results in the absence of establishment of a gametophytic program, allowing the reactivation of the embryogenic process
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spelling Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studiesThis article discusses, from the standpoint of cellular biology, the deterministic and indeterministic androgenesis theories. The role of the vacuole and of various types of stresses on deviation of the microspore from normal development and the point where androgenetic competence is acquired are examined. Based on extensive literature review and data on wheat studies from our laboratory, a model for androgenetic capacity of pollen grain is proposed. A two point deterministic model for in vitro androgenesis is our proposal for acquisition of androgenetic potential of the pollen grain: the first switch point would be early meiosis and the second switch point the uninucleate pollen stage, because the elimination of cytoplasmatic sporophytic determinants takes place at those two strategic moments. Any abnormality in this process allowing the maintenance of sporophytic informational molecules results in the absence of establishment of a gametophytic program, allowing the reactivation of the embryogenic processSociedade Brasileira de Genética1997-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300018Brazilian Journal of Genetics v.20 n.3 1997reponame:Brazilian Journal of Geneticsinstname:Sociedade Brasileira de Genética (SBG)instacron:SBG10.1590/S0100-84551997000300018info:eu-repo/semantics/openAccessGrando,Magali FerrariMoraes-Fernandes,Maria Irene B. deeng1998-10-06T00:00:00Zoai:scielo:S0100-84551997000300018Revistahttps://www.gmb.org.br/brazilian-journal-of-geneticsONGhttps://old.scielo.br/oai/scielo-oai.phpsede@sgb.org.br || sede@sgb.org.br0100-84550100-8455opendoar:1998-10-06T00:00Brazilian Journal of Genetics - Sociedade Brasileira de Genética (SBG)false
dc.title.none.fl_str_mv Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
title Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
spellingShingle Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
Grando,Magali Ferrari
title_short Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
title_full Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
title_fullStr Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
title_full_unstemmed Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
title_sort Two point deterministic model for acquisition of in vitro pollen grain androgenetic capacity based on wheat studies
author Grando,Magali Ferrari
author_facet Grando,Magali Ferrari
Moraes-Fernandes,Maria Irene B. de
author_role author
author2 Moraes-Fernandes,Maria Irene B. de
author2_role author
dc.contributor.author.fl_str_mv Grando,Magali Ferrari
Moraes-Fernandes,Maria Irene B. de
description This article discusses, from the standpoint of cellular biology, the deterministic and indeterministic androgenesis theories. The role of the vacuole and of various types of stresses on deviation of the microspore from normal development and the point where androgenetic competence is acquired are examined. Based on extensive literature review and data on wheat studies from our laboratory, a model for androgenetic capacity of pollen grain is proposed. A two point deterministic model for in vitro androgenesis is our proposal for acquisition of androgenetic potential of the pollen grain: the first switch point would be early meiosis and the second switch point the uninucleate pollen stage, because the elimination of cytoplasmatic sporophytic determinants takes place at those two strategic moments. Any abnormality in this process allowing the maintenance of sporophytic informational molecules results in the absence of establishment of a gametophytic program, allowing the reactivation of the embryogenic process
publishDate 1997
dc.date.none.fl_str_mv 1997-09-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000300018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-84551997000300018
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Genética
publisher.none.fl_str_mv Sociedade Brasileira de Genética
dc.source.none.fl_str_mv Brazilian Journal of Genetics v.20 n.3 1997
reponame:Brazilian Journal of Genetics
instname:Sociedade Brasileira de Genética (SBG)
instacron:SBG
instname_str Sociedade Brasileira de Genética (SBG)
instacron_str SBG
institution SBG
reponame_str Brazilian Journal of Genetics
collection Brazilian Journal of Genetics
repository.name.fl_str_mv Brazilian Journal of Genetics - Sociedade Brasileira de Genética (SBG)
repository.mail.fl_str_mv sede@sgb.org.br || sede@sgb.org.br
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