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Lamb R.S., Irish V.F. Functional divergence within the APETALA3/PISTILLATA floral homeotic gene lineages. Proc Natl Acad Sci USA. 100:2003;6558-6563 PISTILLATA assumes the function of APETALA3 if given a euAP3 carboxy-terminus, but the converse is not true. Both proteins need their carboxy-termini to function properly. Replacing the carboxyl terminus of AP3 with a putatively ancestral motif ('paleoAP3') fully rescued the stamens but not the petals of an ap3 mutant. Clearly AP3 function has been modified in evolutionary time and this modification correlates with the origin of the eudicots.
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(2003)
Proc Natl Acad Sci USA
, vol.100
, pp. 6558-6563
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Lamb, R.S.1
Irish, V.F.2
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42
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0037324657
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The OsTB1 gene negatively regulates lateral branching in rice
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Takeda T., Suwa Y., Suzuki M., Kitano H., Ueguchi-Tanaka M., Ashikari M., Matsuoka M., Ueguchi C. The OsTB1 gene negatively regulates lateral branching in rice. Plant J. 33:2003;513-520.
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Plant J
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Takeda, T.1
Suwa, Y.2
Suzuki, M.3
Kitano, H.4
Ueguchi-Tanaka, M.5
Ashikari, M.6
Matsuoka, M.7
Ueguchi, C.8
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43
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0037044816
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The control of spikelet meristem identity by the branched silkless1 gene in maize
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The grass spikelet (literally a little spike) is generally interpreted as a contracted floral axis. This work shows that the BRANCHED SILKLESS1 (BD1) gene is required to prevent the outgrowth of the spikelet axis; and that its expression domain is conserved among disparate species. The BD1 protein may have been required for the origin of the spikelet, an evolutionary novelty.
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Chuck G., Muszynski M., Kellogg E., Hake S., Schmidt R.J. The control of spikelet meristem identity by the branched silkless1 gene in maize. Science. 298:2002;1238-1241 The grass spikelet (literally a little spike) is generally interpreted as a contracted floral axis. This work shows that the BRANCHED SILKLESS1 (BD1) gene is required to prevent the outgrowth of the spikelet axis; and that its expression domain is conserved among disparate species. The BD1 protein may have been required for the origin of the spikelet, an evolutionary novelty.
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Science
, vol.298
, pp. 1238-1241
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Chuck, G.1
Muszynski, M.2
Kellogg, E.3
Hake, S.4
Schmidt, R.J.5
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44
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0041508383
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FRIZZY PANICLE is required to prevent the formation of axillary meristems and to establish floral meristem identity in rice spikelets
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The authors of this paper describe the function of the rice ortholog of BD. Mutant phenotypes and expression patterns help to resolve long-standing questions about the nature of the rice spikelet. FZP expression is confined to the axil of the first pair of spikelet bracts, which are therefore interpreted as glumes. The second pair of bracts, also frequently called glumes, are better interpreted as sterile flowers.
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Komatsu M., Chujo A., Nagato Y., Shimamoto K., Kyozuka J. FRIZZY PANICLE is required to prevent the formation of axillary meristems and to establish floral meristem identity in rice spikelets. Development. 130:2003;3841-3850 The authors of this paper describe the function of the rice ortholog of BD. Mutant phenotypes and expression patterns help to resolve long-standing questions about the nature of the rice spikelet. FZP expression is confined to the axil of the first pair of spikelet bracts, which are therefore interpreted as glumes. The second pair of bracts, also frequently called glumes, are better interpreted as sterile flowers.
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(2003)
Development
, vol.130
, pp. 3841-3850
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Komatsu, M.1
Chujo, A.2
Nagato, Y.3
Shimamoto, K.4
Kyozuka, J.5
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45
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0037324745
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SUPERWOMAN1 and DROOPING LEAF genes control floral organ identity in rice
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Nagasawa N., Miyoshi M., Sano Y., Satoh H., Hirano H., Sakai H., Nagato Y. SUPERWOMAN1 and DROOPING LEAF genes control floral organ identity in rice. Development. 130:2003;705-718.
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(2003)
Development
, vol.130
, pp. 705-718
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Nagasawa, N.1
Miyoshi, M.2
Sano, Y.3
Satoh, H.4
Hirano, H.5
Sakai, H.6
Nagato, Y.7
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46
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0033680594
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Molecular and genetic analyses of the Silky1 gene reveal conservation in floral organ specification between eudicots and monocots
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Ambrose B.A., Lerner D.R., Ciceri P., Padilla C.M., Yanofsky M.F., Schmidt R.J. Molecular and genetic analyses of the Silky1 gene reveal conservation in floral organ specification between eudicots and monocots. Mol Cell. 5:2000;569-579.
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Mol Cell
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, pp. 569-579
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Ambrose, B.A.1
Lerner, D.R.2
Ciceri, P.3
Padilla, C.M.4
Yanofsky, M.F.5
Schmidt, R.J.6
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47
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0036097809
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Evolution of class B floral homeotic proteins: Obligate heterodimerization
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This study shows that B-class MADS-box genes from a gymnosperm (Gnetum) and from a lily (Lilium) can form homodimers in vitro and in yeast two-hybrid assays. The authors postulate that homodimerization is ancestral, and that heterodimerization arose later in the evolution of the angiosperms.
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Winter K., Weiser C., Kaufmann K., Bohne A., Kirchner C., Kanno A., Saedler H., Theissen G. Evolution of class B floral homeotic proteins: obligate heterodimerization. Mol Biol Evol. 19:2002;587-596 This study shows that B-class MADS-box genes from a gymnosperm (Gnetum) and from a lily (Lilium) can form homodimers in vitro and in yeast two-hybrid assays. The authors postulate that homodimerization is ancestral, and that heterodimerization arose later in the evolution of the angiosperms.
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(2002)
Mol Biol Evol
, vol.19
, pp. 587-596
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Winter, K.1
Weiser, C.2
Kaufmann, K.3
Bohne, A.4
Kirchner, C.5
Kanno, A.6
Saedler, H.7
Theissen, G.8
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48
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0037720190
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Expression of AODEF, a B-functional MADS-box gene, in stamens and inner tepals of the dioecious species Asparagus officinalis L
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Park J.-H., Ishikawa Y., Yoshida R., Kanno A., Kameya T. Expression of AODEF, a B-functional MADS-box gene, in stamens and inner tepals of the dioecious species Asparagus officinalis L. Plant Mol Biol. 51:2003;867-875.
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Plant Mol Biol
, vol.51
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Park, J.-H.1
Ishikawa, Y.2
Yoshida, R.3
Kanno, A.4
Kameya, T.5
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51
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0036800824
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Floral ontogeny of Lecointea, Zollernia, Exostyles, and Harleyodendron (Leguminosae: Papilionoideae: Swartzieae s.l.)
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de Freitas Mansano V., Tucker S.C., de Azevedo Tozzi A.M.G. Floral ontogeny of Lecointea, Zollernia, Exostyles, and Harleyodendron (Leguminosae: Papilionoideae: Swartzieae s.l.). Am J Bot. 89:2002;1553-1569.
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Am J Bot
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De Freitas Mansano, V.1
Tucker, S.C.2
De Azevedo Tozzi, A.M.G.3
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52
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0036299448
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Comparative floral ontogeny in Detarieae (Leguminosae: Caesalpinioideae). 1. Radially symmetrical taxa lacking organ suppression
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Tucker S.C. Comparative floral ontogeny in Detarieae (Leguminosae: Caesalpinioideae). 1. Radially symmetrical taxa lacking organ suppression. Am J Bot. 89:2002;875-887.
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Am J Bot
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, pp. 875-887
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Tucker, S.C.1
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53
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0036304727
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Comparative floral ontogeny in Detarieae (Leguminosae: Caesalpinoideae). 2. Zygomorphic taxa with petal and stamen suppression
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Tucker S.C. Comparative floral ontogeny in Detarieae (Leguminosae: Caesalpinoideae). 2. Zygomorphic taxa with petal and stamen suppression. Am J Bot. 89:2002;888-907.
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Am J Bot
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, pp. 888-907
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Tucker, S.C.1
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54
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0036095127
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Floral ontogeny in Sophoreae (Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia purpurea
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Tucker S.C. Floral ontogeny in Sophoreae (Leguminosae: Papilionoideae). III. Radial symmetry and random petal aestivation in Cadia purpurea. Am J Bot. 89:2002;748-757.
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Am J Bot
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Tucker, S.C.1
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55
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0036945242
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Developmental morphology and structural homology of corolla-androecium synorganization in the tribe Amorpheae (Fabaceae: Papilionoideae)
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McMahon M., Hufford L. Developmental morphology and structural homology of corolla-androecium synorganization in the tribe Amorpheae (Fabaceae: Papilionoideae). Am J Bot. 89:2002;1884-1898.
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Am J Bot
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McMahon, M.1
Hufford, L.2
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56
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0036862152
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Inflorescence development in a high-altitude annual Mexican teosinte (Poaceae)
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Orr A.R., Mullen K., Klaahsen D., Sundberg M.D. Inflorescence development in a high-altitude annual Mexican teosinte (Poaceae). Am J Bot. 89:2002;1730-1740.
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(2002)
Am J Bot
, vol.89
, pp. 1730-1740
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Orr, A.R.1
Mullen, K.2
Klaahsen, D.3
Sundberg, M.D.4
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57
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0042928199
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Floral development and phyllotactic variation in Ceratophyllum demersum (Ceratophyllaceae)
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The phylogenetic placement of Ceratophyllum has been and remains controversial. Furthermore, establishing the nature of the highly reduced floral parts of this species has been difficult. The authors of this paper provide a detailed description of the floral development and morphology of Ceratophyllum. Curiously, organs found in the position of tepals are interpreted as bracts; this hypothesis could be tested by gene expression studies.
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Iwamoto A., Shimizu A., Ohba H. Floral development and phyllotactic variation in Ceratophyllum demersum (Ceratophyllaceae). Am J Bot. 90:2003;1124-1130 The phylogenetic placement of Ceratophyllum has been and remains controversial. Furthermore, establishing the nature of the highly reduced floral parts of this species has been difficult. The authors of this paper provide a detailed description of the floral development and morphology of Ceratophyllum. Curiously, organs found in the position of tepals are interpreted as bracts; this hypothesis could be tested by gene expression studies.
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(2003)
Am J Bot
, vol.90
, pp. 1124-1130
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Iwamoto, A.1
Shimizu, A.2
Ohba, H.3
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58
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0037746474
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Cone and ovule development in Cunninghamia and Taiwania (Cupressaceae sensu lato) and its significance for conifer evolution
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Farjon A., Garcia S.O. Cone and ovule development in Cunninghamia and Taiwania (Cupressaceae sensu lato) and its significance for conifer evolution. Am J Bot. 90:2003;8-16.
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(2003)
Am J Bot
, vol.90
, pp. 8-16
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Farjon, A.1
Garcia, S.O.2
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59
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0037270188
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Phylogenetic relationships among species in the genera Chisocheton and Guarea that have unique indeterminate leaves as inferred from sequences of chloroplast DNA
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Fukuda T., Yokoyama J., Tsukaya H. Phylogenetic relationships among species in the genera Chisocheton and Guarea that have unique indeterminate leaves as inferred from sequences of chloroplast DNA. Int J Plant Sci. 164:2003;13-24.
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Int J Plant Sci
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Fukuda, T.1
Yokoyama, J.2
Tsukaya, H.3
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60
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0038054976
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The development of enantiostyly
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Jesson L.K., Kang J., Wagner S.L., Barrett S.C.H., Dengler N.G. The development of enantiostyly. Am J Bot. 90:2003;183-195.
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Am J Bot
, vol.90
, pp. 183-195
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Jesson, L.K.1
Kang, J.2
Wagner, S.L.3
Barrett, S.C.H.4
Dengler, N.G.5
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61
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0036861994
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The evolution of anther morphology in orchids: Incumbent anthers, superposed pollinia, and the vandoid complex
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Freudenstein J.V., Harris E.M., Rasmussen F.N. The evolution of anther morphology in orchids: incumbent anthers, superposed pollinia, and the vandoid complex. Am J Bot. 89:2002;1747-1755.
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Am J Bot
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Freudenstein, J.V.1
Harris, E.M.2
Rasmussen, F.N.3
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62
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0038743148
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Aspects of inflorescence and floral development in the putative basal angiosperm Amborella trichopoda (Amborellaceae)
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Posluszny U., Tomlinson P.B. Aspects of inflorescence and floral development in the putative basal angiosperm Amborella trichopoda (Amborellaceae). Can J Bot. 81:2003;28-39.
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Can J Bot
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Posluszny, U.1
Tomlinson, P.B.2
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63
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0033711864
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The reproductive structures of the basal angiosperm Amborella trichopoda (Amborellaceae)
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Endress P.K., Igersheim A. The reproductive structures of the basal angiosperm Amborella trichopoda (Amborellaceae). Int J Plant Sci. 161(Suppl):2000;S237-S248.
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Int J Plant Sci
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Endress, P.K.1
Igersheim, A.2
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64
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0037482066
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Inside-out flowers characteristic of Lacandonia schismatica evolved at least before its divergence from a closely related taxon, Triuris brevistylis
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Lacandonia was thought to be the only angiosperm in which carpels surrounded the stamens, rather than the other way around. This paper documents naturally occurring polymorphism in this characteristic in both L. schismatica and T. brevistylis, suggesting that the polymorphism is relatively old and not completely genetically fixed.
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Vergara-Silva F., Espinosa-Matías S., Ambrose B.A., Vázquez-Santana S., Martínez-Mena A., Márquez- Guzmán J., Martínez E., Meyerowitz E.M., Alvarez-Buylla E.R. Inside-out flowers characteristic of Lacandonia schismatica evolved at least before its divergence from a closely related taxon, Triuris brevistylis. Int J Plant Sci. 164:2003;345-357 Lacandonia was thought to be the only angiosperm in which carpels surrounded the stamens, rather than the other way around. This paper documents naturally occurring polymorphism in this characteristic in both L. schismatica and T. brevistylis, suggesting that the polymorphism is relatively old and not completely genetically fixed.
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Int J Plant Sci
, vol.164
, pp. 345-357
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Vergara-Silva, F.1
Espinosa-Matías, S.2
Ambrose, B.A.3
Vázquez-Santana, S.4
Martínez-Mena, A.5
Márquez-Guzmán, J.6
Martínez, E.7
Meyerowitz, E.M.8
Alvarez-Buylla, E.R.9
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65
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0036678852
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Inflorescence diversification in the panicoid 'bristle grass' clade (Paniceae, Poaceae): Evidence from molecular phylogenies and developmental morphology
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The authors of this paper show that much of the diversification of inflorescences can be described by variation in a relatively small number of characteristics. These characteristics include the number of branch meristems produced by each inflorescence meristem, the numbers of times each branch meristem itself produces additional branch meristems (orders of branching), and the extent of elongation of each axis.
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Doust A.N., Kellogg E.A. Inflorescence diversification in the panicoid 'bristle grass' clade (Paniceae, Poaceae): evidence from molecular phylogenies and developmental morphology. Am J Bot. 89:2002;1203-1222 The authors of this paper show that much of the diversification of inflorescences can be described by variation in a relatively small number of characteristics. These characteristics include the number of branch meristems produced by each inflorescence meristem, the numbers of times each branch meristem itself produces additional branch meristems (orders of branching), and the extent of elongation of each axis.
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Am J Bot
, vol.89
, pp. 1203-1222
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Doust, A.N.1
Kellogg, E.A.2
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66
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0842332130
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Ontogenetic origins of floral bilateral symmetry in Moringaceae (Brassicales)
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Flowers of all species of Moringaceae are initially zygomorphic, with some becoming more nearly actinomorphic during development. Variation in the suppression of stamens also correlates with phylogeny.
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Olson M.E. Ontogenetic origins of floral bilateral symmetry in Moringaceae (Brassicales). Am J Bot. 90:2003;49-71 Flowers of all species of Moringaceae are initially zygomorphic, with some becoming more nearly actinomorphic during development. Variation in the suppression of stamens also correlates with phylogeny.
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Am J Bot
, vol.90
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Olson, M.E.1
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67
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Quantitative trait loci for inflorescence development in Arabidopsis thaliana
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Ungerer M.C., Halldorsdottir S.S., Modliszewski J.L., Mackay T.F.C., Purugganan M.D. Quantitative trait loci for inflorescence development in Arabidopsis thaliana. Genetics. 160:2002;1133-1151.
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Genetics
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Ungerer, M.C.1
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Modliszewski, J.L.3
MacKay, T.F.C.4
Purugganan, M.D.5
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68
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0036672441
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Conservation of gene function in the Solanaceae as revealed by comparative mapping of domestication traits in eggplant
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Doganlar S., Frary A., Daunay M.-C., Lester R.N., Tanksley S.D. Conservation of gene function in the Solanaceae as revealed by comparative mapping of domestication traits in eggplant. Genetics. 161:2002;1713-1726.
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Genetics
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Doganlar, S.1
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69
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Convergent domestication of cereal crops by independent mutations at corresponding genetic loci
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Paterson A.H., Lin Y.-R., Li Z., Schertz K.F., Doebley J.F., Pinson S.R.M., Liu S.-C., Stansel J.W., Irvine J.E. Convergent domestication of cereal crops by independent mutations at corresponding genetic loci. Science. 269:1995;1714-1718.
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Science
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Paterson, A.H.1
Lin, Y.-R.2
Li, Z.3
Schertz, K.F.4
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Pinson, S.R.M.6
Liu, S.-C.7
Stansel, J.W.8
Irvine, J.E.9
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70
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The genetic architecture necessary for transgressive segregation is common in both natural and domesticated populations
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Morphological traits in plants are often controlled by multiple genes, and in any given plant, the genes may have opposing effects on the trait. Thus a small plant may carry alleles that increase height, and a tall plant may carry dwarfing alleles. Crossing the plants produces offspring that bear novel combinations of alleles that produce phenotypes that are more extreme than those of either parent. This phenomenon (transgressive segregation) is shown to be common.
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Rieseberg L.H., Widmer A., Arntz A.M., Burke J.M. The genetic architecture necessary for transgressive segregation is common in both natural and domesticated populations. Philos Trans R Soc Lond B Biol Sci. 358:2003;1141-1147 Morphological traits in plants are often controlled by multiple genes, and in any given plant, the genes may have opposing effects on the trait. Thus a small plant may carry alleles that increase height, and a tall plant may carry dwarfing alleles. Crossing the plants produces offspring that bear novel combinations of alleles that produce phenotypes that are more extreme than those of either parent. This phenomenon (transgressive segregation) is shown to be common.
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Philos Trans R Soc Lond B Biol Sci
, vol.358
, pp. 1141-1147
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Rieseberg, L.H.1
Widmer, A.2
Arntz, A.M.3
Burke, J.M.4
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71
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Major ecological transitions in wild sunflowers facilitated by hybridization
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Rieseberg L.H., Raymond O., Rosenthal D.M., Lai Z., Livingstone K., Nakazato T., Durphy J.L., Schwarzbach A.E., Donovan L.A., Lexer C. Major ecological transitions in wild sunflowers facilitated by hybridization. Science. 301:2003;1211-1216.
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Science
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Rieseberg, L.H.1
Raymond, O.2
Rosenthal, D.M.3
Lai, Z.4
Livingstone, K.5
Nakazato, T.6
Durphy, J.L.7
Schwarzbach, A.E.8
Donovan, L.A.9
Lexer, C.10
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72
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Genetic variation for phenotypically invariant traits detected in teosinte: Implications for the evolution of novel forms
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Lauter N., Doebley J. Genetic variation for phenotypically invariant traits detected in teosinte: implications for the evolution of novel forms. Genetics. 160:2002;333-342.
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Genetics
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Lauter, N.1
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Comparative sequencing in the genus Lycopersicon: Implications for the evolution of fruit size in the domestication of cultivated tomatoes
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Nesbitt T.C., Tanksley S.D. Comparative sequencing in the genus Lycopersicon: implications for the evolution of fruit size in the domestication of cultivated tomatoes. Genetics. 162:2002;365-379.
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Genetics
, vol.162
, pp. 365-379
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Nesbitt, T.C.1
Tanksley, S.D.2
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