Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications
Abstract Lessingianthus plantaginoides (Vernonieae, Asteraceae) is a small natural tetraploid shrub that inhabits rocky highlands from South America. The population studied inhabits and covers an extensive region of a private reserve with high local biodiversity and animal and plant endemisms. With...
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| Format: | Article |
| Language: | English |
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Instituto de Pesquisas Jardim Botânico do Rio de Janeiro
2021-09-01
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| Series: | Rodriguésia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602021000100269&tlng=en |
| _version_ | 1819005821616390144 |
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| author | Yanina de Jesús Pérez Maria Betiana Angulo Ana Honfi Massimiliano Dematteis |
| author_facet | Yanina de Jesús Pérez Maria Betiana Angulo Ana Honfi Massimiliano Dematteis |
| author_sort | Yanina de Jesús Pérez |
| collection | DOAJ |
| description | Abstract Lessingianthus plantaginoides (Vernonieae, Asteraceae) is a small natural tetraploid shrub that inhabits rocky highlands from South America. The population studied inhabits and covers an extensive region of a private reserve with high local biodiversity and animal and plant endemisms. With the purpose of providing insights into the cyto-embryology of this tetraploid species, the aims of this study were: to perform an ontogenetic study of the male and female gametophytes of L. plantaginoides; to carry out detailed meiotic analysis and evaluate the fertility of this species; to document and provide highlights on taxonomic implications of their reproductive aspects. Lessingianthus plantaginoides presented the following male and female gametophyte traits: dicotyledonous type of anther wall development, tetrahedral tetrads, 3-celled mature pollen grains; development of the chalazal megaspore, monosporic embryo sac and Polygonum type of megagametophyte development. The meiotic behavior was regular, the spores were tetrads of equal size and the pollen grains were highly stainable. Lessingianthus plantaginoides is a highly diplodized autotetraploid that reproduces sexually and has high meiotic regularity; which is apparently responsible for its colonization potential. It now seems certain that polyploid speciation plays a significant role in the establishment and diversification of the genus. |
| first_indexed | 2024-12-20T23:58:53Z |
| format | Article |
| id | doaj.art-636d8e92befd4a8bba275ecb36e401a4 |
| institution | Directory Open Access Journal |
| issn | 2175-7860 |
| language | English |
| last_indexed | 2024-12-20T23:58:53Z |
| publishDate | 2021-09-01 |
| publisher | Instituto de Pesquisas Jardim Botânico do Rio de Janeiro |
| record_format | Article |
| series | Rodriguésia |
| spelling | doaj.art-636d8e92befd4a8bba275ecb36e401a42022-12-21T19:22:40ZengInstituto de Pesquisas Jardim Botânico do Rio de JaneiroRodriguésia2175-78602021-09-017210.1590/2175-7860202172080Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implicationsYanina de Jesús Pérezhttps://orcid.org/0000-0003-3181-0391Maria Betiana Angulohttps://orcid.org/0000-0002-4093-1657Ana Honfihttps://orcid.org/0000-0002-0915-2129Massimiliano Dematteishttps://orcid.org/0000-0003-3340-2252Abstract Lessingianthus plantaginoides (Vernonieae, Asteraceae) is a small natural tetraploid shrub that inhabits rocky highlands from South America. The population studied inhabits and covers an extensive region of a private reserve with high local biodiversity and animal and plant endemisms. With the purpose of providing insights into the cyto-embryology of this tetraploid species, the aims of this study were: to perform an ontogenetic study of the male and female gametophytes of L. plantaginoides; to carry out detailed meiotic analysis and evaluate the fertility of this species; to document and provide highlights on taxonomic implications of their reproductive aspects. Lessingianthus plantaginoides presented the following male and female gametophyte traits: dicotyledonous type of anther wall development, tetrahedral tetrads, 3-celled mature pollen grains; development of the chalazal megaspore, monosporic embryo sac and Polygonum type of megagametophyte development. The meiotic behavior was regular, the spores were tetrads of equal size and the pollen grains were highly stainable. Lessingianthus plantaginoides is a highly diplodized autotetraploid that reproduces sexually and has high meiotic regularity; which is apparently responsible for its colonization potential. It now seems certain that polyploid speciation plays a significant role in the establishment and diversification of the genus.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602021000100269&tlng=enembryologygametophyte developmentpolyploidyVernonieae |
| spellingShingle | Yanina de Jesús Pérez Maria Betiana Angulo Ana Honfi Massimiliano Dematteis Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications Rodriguésia embryology gametophyte development polyploidy Vernonieae |
| title | Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications |
| title_full | Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications |
| title_fullStr | Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications |
| title_full_unstemmed | Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications |
| title_short | Embryology and fertility of the natural tetraploid Lessingianthus plantaginoides (Asteraceae, Vernonieae): taxonomic implications |
| title_sort | embryology and fertility of the natural tetraploid lessingianthus plantaginoides asteraceae vernonieae taxonomic implications |
| topic | embryology gametophyte development polyploidy Vernonieae |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2175-78602021000100269&tlng=en |
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