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Titolo:
The role of genes influencing the corolla in pollination of Antirrhinum majus
Autore:
Comba, L; Corbet, SA; Hunt, H; Outram, S; Parker, JS; Glover, BJ;
Indirizzi:
Univ Cambridge, Dept Plant Sci, Cambridge CB2 3EA, England Univ CambridgeCambridge England CB2 3EA Sci, Cambridge CB2 3EA, England Univ Cambridge, Dept Zool, Cambridge CB2 3EJ, England Univ Cambridge Cambridge England CB2 3EJ ool, Cambridge CB2 3EJ, England
Titolo Testata:
PLANT CELL AND ENVIRONMENT
fascicolo: 6, volume: 23, anno: 2000,
pagine: 639 - 647
SICI:
0140-7791(200006)23:6<639:TROGIT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
CELL-SHAPE; TRANSCRIPTION FACTOR; BEES; PIGMENTATION; PATTERNS; FLOWERS; NECTAR; PETALS;
Keywords:
Antirrhinum majus (snapdragon); epidermal cell shape; intrafloral temperature; mutation; nectar; pigmentation; pollination;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Glover, BJ Univ Cambridge, Dept Plant Sci, Downing St, Cambridge CB2 3EA, England Univ Cambridge Downing St Cambridge England CB2 3EA A, England
Citazione:
L. Comba et al., "The role of genes influencing the corolla in pollination of Antirrhinum majus", PL CELL ENV, 23(6), 2000, pp. 639-647

Abstract

Studies of pollination ecology have been hindered by an absence of biochemical information about the basis of polymorphism. Using model plants and mutant lines described by molecular genetics may circumvent this difficulty. Mutation of genes controlling petal colour and petal epidermal cell shape in Antirrhinum majus was previously shown to influence fruit set. White flowers set less fruit than magenta flowers and mutants with flat petal epidermal cells set less fruit than flowers with conical cells. Here we analyse the causal pathway underlying this phenomenon through a study of floral characteristics and bee behaviour. Results indicate that bees recognized plants with magenta conical-celled flowers at a distance and did not approach white flowers or magenta flat-celled flowers so frequently. Petal cell shape interacted with colour in determining whether an approaching bee landed on a flower within a plot and whether a bee landing on a flower would probe it. The intrafloral temperature of flowers with conical petal cells was shown to increase with solar irradiance, unlike the intrafloral temperature of flowers with flat petal cells. The difference in fruit set may reflect pollinator discrimination between genotypes as a consequence of the effect of intrafloral temperature on nectar quality and quantity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/01/21 alle ore 18:33:32