Phylogeny and the evolution of flower symmetry in the Asteridae
Phylogenetic trees imply that flowers with a single plane of symmetry (zygomorphic flowers) have evolved several times independently from radially symmetrical (actinomorphic) ancestors within the Asteridae. However, there also appear to have been reversals to actinomorphy. A few evolutionarily deriv...
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| Veröffentlicht in: | Trends in plant science 1998-08, Vol.3 (8), p.311-317 |
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| creator | Donoghue, Michael J Ree, Richard H Baum, David A |
| description | Phylogenetic trees imply that flowers with a single plane of symmetry (zygomorphic flowers) have evolved several times independently from radially symmetrical (actinomorphic) ancestors within the Asteridae. However, there also appear to have been reversals to actinomorphy. A few evolutionarily derived actinomorphic flowers resemble mutants caused by loss-of-function mutations in genes such as
CYCLOIDEA. However, a majority of the shifts from zygomorphy to actinomorphy appear to have entailed a reduction in petal number and flower size, implying a mechanism other than loss of
CYCLOIDEA function. Within the Asteridae there appear to be three common forms of zygomorphy. An explanation for the virtual absence of other forms rests on the near universality of the basic orientation of the flower in the Asteridae. |
| doi_str_mv | 10.1016/S1360-1385(98)01278-3 |
| format | Article |
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CYCLOIDEA. However, a majority of the shifts from zygomorphy to actinomorphy appear to have entailed a reduction in petal number and flower size, implying a mechanism other than loss of
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CYCLOIDEA function. Within the Asteridae there appear to be three common forms of zygomorphy. An explanation for the virtual absence of other forms rests on the near universality of the basic orientation of the flower in the Asteridae.</description><subject>Asteridae</subject><subject>Biological and medical sciences</subject><subject>evolution</subject><subject>flower</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>phylogeny</subject><subject>Plant cytology, morphology, systematics, chorology and evolution</subject><subject>Plant evolution</subject><subject>symmetry</subject><subject>systematics</subject><issn>1360-1385</issn><issn>1878-4372</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNqFkM1LAzEQxRdRsFb_BGEPInpYzWySTfZUSvELCgrqOaTZiY1sNzXZVva_d_uhV0_zBn5vHvOS5BzIDRAobl-BFiQDKvlVKa8J5EJm9CAZgOwFoyI_7PUvcpycxPhJCBEgi0Eyepl3tf_Apkt1U6XtHFNc-3rVOt-k3qa29t8Y0tgtFtiGLnXNlhnHFoOrNJ4mR1bXEc_2c5i839-9TR6z6fPD02Q8zQyTvM1mBS0tEG5ZKaGyrN8pkZZVQEXFQHBrIOdADeFgZqykM56LsiiFzKURhNBhcrm7uwz-a4WxVQsXDda1btCvogIBjBZM9iDfgSb4GANatQxuoUOngKhNXWpbl9p0oUqptnUp2vsu9gE6Gl3boBvj4p85p1AKscFGOwz7Z9cOg4rGYWOwcgFNqyrv_gn6AZTxfM0</recordid><startdate>19980801</startdate><enddate>19980801</enddate><creator>Donoghue, Michael J</creator><creator>Ree, Richard H</creator><creator>Baum, David A</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope></search><sort><creationdate>19980801</creationdate><title>Phylogeny and the evolution of flower symmetry in the Asteridae</title><author>Donoghue, Michael J ; Ree, Richard H ; Baum, David A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c485t-b639f105f4981df4b63308f4d137d4175fc12513c051cb493b5279697828c7003</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Asteridae</topic><topic>Biological and medical sciences</topic><topic>evolution</topic><topic>flower</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>phylogeny</topic><topic>Plant cytology, morphology, systematics, chorology and evolution</topic><topic>Plant evolution</topic><topic>symmetry</topic><topic>systematics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Donoghue, Michael J</creatorcontrib><creatorcontrib>Ree, Richard H</creatorcontrib><creatorcontrib>Baum, David A</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><jtitle>Trends in plant science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Donoghue, Michael J</au><au>Ree, Richard H</au><au>Baum, David A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Phylogeny and the evolution of flower symmetry in the Asteridae</atitle><jtitle>Trends in plant science</jtitle><date>1998-08-01</date><risdate>1998</risdate><volume>3</volume><issue>8</issue><spage>311</spage><epage>317</epage><pages>311-317</pages><issn>1360-1385</issn><eissn>1878-4372</eissn><abstract>Phylogenetic trees imply that flowers with a single plane of symmetry (zygomorphic flowers) have evolved several times independently from radially symmetrical (actinomorphic) ancestors within the Asteridae. However, there also appear to have been reversals to actinomorphy. A few evolutionarily derived actinomorphic flowers resemble mutants caused by loss-of-function mutations in genes such as
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete - AutoHoldings |
| subjects | Asteridae Biological and medical sciences evolution flower Fundamental and applied biological sciences. Psychology phylogeny Plant cytology, morphology, systematics, chorology and evolution Plant evolution symmetry systematics |
| title | Phylogeny and the evolution of flower symmetry in the Asteridae |
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