%AZhao, Yang%AZhao, Yang%ALiu, Rong%ALiu, Rong%AXu, Yiteng%AXu, Yiteng%AWang, Minmin%AWang, Minmin%AZhang, Jing%AZhang, Jing%ABai, Mingyi%ABai, Mingyi%AHan, Chao%AHan, Chao%AXiang, Fengning%AXiang, Fengning%AWang, Zeng-Yu%AWang, Zeng-Yu%AMysore, Kirankumar%AMysore, Kirankumar%AWen, Jiangqi%AWen, Jiangqi%AZhou, Chuanen%AZhou, Chuanen%BJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 116; Journal Issue: 11; Related Information: CHORUS Timestamp: 2020-02-03 14:39:31 %D2019%IProceedings of the National Academy of Sciences %JJournal Name: Proceedings of the National Academy of Sciences; Journal Volume: 116; Journal Issue: 11; Related Information: CHORUS Timestamp: 2020-02-03 14:39:31 %K %MOSTI ID: 10086257 %PMedium: X %TAGLF provides C-function in floral organ identity through transcriptional regulation of AGAMOUS in Medicago truncatula %X

Floral development is one of the model systems for investigating the mechanisms underlying organogenesis in plants. Floral organ identity is controlled by the well-known ABC model, which has been generalized to many flowering plants. Here, we report a previously uncharacterized MYB-like gene,AGAMOUS-LIKE FLOWER(AGLF), involved in flower development in the model legumeMedicago truncatula. Loss-of-function ofAGLFresults in flowers with stamens and carpel transformed into extra whorls of petals and sepals. Compared with the loss-of-function mutant of the class C geneAGAMOUS(MtAG) inM. truncatula, the defects in floral organ identity are similar betweenaglfandmtag, but the floral indeterminacy is enhanced in theaglfmutant. Knockout ofAGLFin the mutants of the class A geneMtAP1or the class B geneMtPIleads to an addition of a loss-of-C-function phenotype, reflecting a conventional relationship ofAGLFwith the canonical A and B genes. Furthermore, we demonstrate thatAGLFactivatesMtAGin transcriptional levels in control of floral organ identity. These data shed light on the conserved and diverged molecular mechanisms that control flower development and morphology among plant species.

%0Journal Article