Suppression of heterotrimeric G-protein β-subunit affects anther shape, pollen development and inflorescence architecture in tobacco

The role of the heterotrimeric G-protein β-subunit in plant development was studied in transgenic tobacco (Nicotiana tabacum L.) plants with reduced β-subunit levels due to the antisense expression of the β-subunit mRNA. The antisense plants had aberrant anther shape and produced non-germinating pol...

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Hauptverfasser: Pes̆kan-Berghöfer, Tatjana (VerfasserIn) , Oelmüller, Ralf (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 27 January 2005
In: Planta
Year: 2005, Jahrgang: 220, Heft: 5, Pages: 737-746
ISSN:1432-2048
DOI:10.1007/s00425-004-1393-4
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1007/s00425-004-1393-4
Verlag, Volltext: https://link.springer.com/article/10.1007/s00425-004-1393-4
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Verfasserangaben:Tatjana Peškan-Berghöfer, Jana Neuwirth, Victor Kusnetsov, Ralf Oelmüller

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520 |a The role of the heterotrimeric G-protein β-subunit in plant development was studied in transgenic tobacco (Nicotiana tabacum L.) plants with reduced β-subunit levels due to the antisense expression of the β-subunit mRNA. The antisense plants had aberrant anther shape and produced non-germinating pollen. The anthers were sporadically transformed to petals, whereas other floral organs were not affected. The pollen grains were smaller than the wild-type pollen and had abnormal cell walls. The architecture of mature antisense plants was altered. The plants had long branched panicles and short stems. These data suggest that the β-subunit of the plant heterotrimeric G-proteins is involved in the regulation of the reproductive phase of the tobacco life cycle, particularly in stamen development and pollen maturation. 
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