Reciprocal expression of MADS-box genes and DNA methylation reconfiguration initiate bisexual cones in spruce.
Commun Biol
; 7(1): 114, 2024 01 19.
Article
en En
| MEDLINE
| ID: mdl-38242964
ABSTRACT
The naturally occurring bisexual cone of gymnosperms has long been considered a possible intermediate stage in the origin of flowers, but the mechanisms governing bisexual cone formation remain largely elusive. Here, we employed transcriptomic and DNA methylomic analyses, together with hormone measurement, to investigate the molecular mechanisms underlying bisexual cone development in the conifer Picea crassifolia. Our study reveals a "bisexual" expression profile in bisexual cones, especially in expression patterns of B-class, C-class and LEAFY genes, supporting the out of male model. GGM7 could be essential for initiating bisexual cones. DNA methylation reconfiguration in bisexual cones affects the expression of key genes in cone development, including PcDAL12, PcDAL10, PcNEEDLY, and PcHDG5. Auxin likely plays an important role in the development of female structures of bisexual cones. This study unveils the potential mechanisms responsible for bisexual cone formation in conifers and may shed light on the evolution of bisexuality.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Picea
/
Tracheophyta
/
Minorías Sexuales y de Género
Límite:
Humans
Idioma:
En
Revista:
Commun Biol
Año:
2024
Tipo del documento:
Article
País de afiliación:
China