Transcriptome analysis reveals rice MADS13 as an important repressor of the carpel development pathway in ovules
Osnato, Michela (Centre de Recerca en Agrigenòmica)
Lacchini, Elia (VIB Center for Plant System Biology (Belgium))
Pilatone, Alessandro (Università degli Studi di Milano. Dipartimento di Bioscienze)
Dreni, Ludovico (Instituto de Biología Molecular y Celular de Plantas)
Grioni, Andrea (Università degli Studi di Milano. Dipartimento di Bioscienze)
Chiara, Matteo (Università degli Studi di Milano. Dipartimento di Bioscienze)
Horner, David (Università degli Studi di Milano. Dipartimento di Bioscienze)
Pelaz, Soraya (Centre de Recerca en Agrigenòmica)
Kater, Martin M. (Università degli Studi di Milano. Dipartimento di Bioscienze)

Data:	2021
Resum:	In angiosperms, floral homeotic genes encoding MADS-domain transcription factors regulate the development of floral organs. Specifically, members of the SEPALLATA (SEP) and AGAMOUS (AG) subfamilies form higher-order protein complexes to control floral meristem determinacy and to specify the identity of female reproductive organs. In rice, the AG subfamily gene OsMADS13 is intimately involved in the determination of ovule identity, since knock-out mutant plants develop carpel-like structures in place of ovules, resulting in female sterility. Little is known about the regulatory pathways at the base of rice gynoecium development. To investigate molecular mechanisms acting downstream of OsMADS13, we obtained transcriptomes of immature inflorescences from wild-type and Osmads13 mutant plants. Among a total of 476 differentially expressed genes (DEGs), a substantial overlap with DEGs from the SEP-family Osmads1 mutant was found, suggesting that OsMADS1 and OsMADS13 may act on a common set of target genes. Expression studies and preliminary analyses of two up-regulated genes encoding Zinc-finger transcription factors indicated that our dataset represents a valuable resource for the identification of both OsMADS13 target genes and novel players in rice ovule development. Taken together, our study suggests that OsMADS13 is an important repressor of the carpel pathway during ovule development.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Floral meristem determinacy ; Gynoecium ; Oryza sativa ; Ovule ; Transcription ; Rice
Publicat a:	Journal of Experimental Botany, Vol. 72, Issue 2 (February 2021) , p. 398-414, ISSN 0022-0957

DOI: 10.1093/jxb/eraa460

Article. Postprint 40 p, 1.6 MB	Supplement Figures 15 p, 2.4 MB	Supplement Tables 1-3. Arxiu xlsx 18.1 KB	Supplement Data 1. Arxiu xlsx 108.4 KB	Supplement Data 2. Arxiu xlsx 37.4 KB	Supplement Data 3. Arxiu xlsx 18.1 KB

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