INVESTIGADORES
ECHENIQUE Carmen Viviana
congresos y reuniones científicas
Título:
An evolutionary approach to optimising synthetic apomixis in cereal crops
Autor/es:
SURBANOVSKI N; SELVA JP; WALLINGTON E; CARBALLO J; MILNER M; PERCIVAL-ALWYN L; ZAPPACOSTA D; BELLIDO A; ECHENIQUE V; CACCAMO M
Lugar:
Praga
Reunión:
Conferencia; 26th ICSPR; 2022
Institución organizadora:
Institute of Experimental Botany
Resumen:
Seed-mediated apomixis evolved as an alternative to the reproductivepathway whereby unreduced cells within the ovule acquire a reproductivefate. A recent breakthrough study showed that male-derived expressionof the transcription factor BBM1 in rice, which triggers the embryonicprogramme upon fertilisation, can be used to deliver parthenogenesiswhen ectopically expressed in the oocyte. Feasibility of apomixis in ricewas shown by combining the BBM1 expression in the egg with amitosis/meiosis substitution construction known as MiMe. However, asMiMe disables both male and female meiosis, it affects bothgametophytes, creating polyploids and this ‘disarming meiosis’ approachalso leads to inevitable change to the expected 2:3 zygote:endospermgenome ratio.