2018
DOI: 10.1101/398883
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Abstract: DELLA proteins are land-plant specific transcriptional regulators known to interact through their C-terminal GRAS domain with over 150 transcription factors in Arabidopsis thaliana. Besides, DELLAs from vascular plants can interact through the N-terminal domain with the gibberellin receptor encoded by GID1, through which gibberellins promote DELLA degradation. However, this regulation is absent in non-vascular land plants, which lack active gibberellins or a proper GID1 receptor. Current knowledge indicates th… Show more

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Cited by 9 publications
(24 citation statements)
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References 68 publications
(21 reference statements)
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“…While DELLA is present, orthologues of gibberellin (GA) receptor GID1 and GA oxidases are missing from the Anthoceros genomes. This is consistent with the recent suggestion that DELLA was recruited to the GA signalling pathway later in plant evolution 38 . Hornworts also possess enzymes to synthesize strigolactones but genes involved in strigolactone signalling are absent.…”
Section: Genes Related To Phytohormone Synthesis and Signallingsupporting
confidence: 93%
“…While DELLA is present, orthologues of gibberellin (GA) receptor GID1 and GA oxidases are missing from the Anthoceros genomes. This is consistent with the recent suggestion that DELLA was recruited to the GA signalling pathway later in plant evolution 38 . Hornworts also possess enzymes to synthesize strigolactones but genes involved in strigolactone signalling are absent.…”
Section: Genes Related To Phytohormone Synthesis and Signallingsupporting
confidence: 93%
“…Given that DELLA protein stability is dependent on gibberellin (GA) levels 2 , and GA metabolism is influenced by the environment 3 , this pathway is proposed to relay environmental information to the transcriptional programs that regulate growth and stress responses in angiosperms 4,5 . However, DELLA genes are also found in bryophytes, whereas canonical GA receptors appeared only in vascular plants [6][7][8][9][10] . Thus, it is not clear whether these regulatory functions of DELLA predated or emerged with typical GA signaling.…”
Section: Summary (250 Words W References)mentioning
confidence: 99%
“…This releases sequestered transcription factors, allowing them to upregulate GA-dependent transcription (reviewed by Sun, 2011). While DELLA genes are ancient, the interaction between DELLA and GID1 probably emerged only after the divergence of mosses (Hirano et al, 2007;Yasumura et al, 2007;Cox, 2018;Hernandez-Garcia & Briones-Moreno, 2019). Intriguingly, DELLA domains from the hornwort Nothoceros vincentianus, the moss Physcomitrella patens, the lycophyte Selaginella moellendorffii and from A. thaliana can all act as transcriptional activation domains (Fig.…”
Section: Reviewmentioning
confidence: 99%