DELLA proteins regulate spore germination and reproductive development in Physcomitrium patens.
Physcomitrium patens
DELLA proteins
diterpenes
light receptors
reproduction
spores
transcriptional regulation
Journal
The New phytologist
ISSN: 1469-8137
Titre abrégé: New Phytol
Pays: England
ID NLM: 9882884
Informations de publication
Date de publication:
04 2023
04 2023
Historique:
received:
12
09
2022
accepted:
12
12
2022
pubmed:
24
1
2023
medline:
21
3
2023
entrez:
23
1
2023
Statut:
ppublish
Résumé
Proteins of the DELLA family integrate environmental signals to regulate growth and development throughout the plant kingdom. Plants expressing non-degradable DELLA proteins underpinned the development of high-yielding 'Green Revolution' dwarf crop varieties in the 1960s. In vascular plants, DELLAs are regulated by gibberellins, diterpenoid plant hormones. How DELLA protein function has changed during land plant evolution is not fully understood. We have examined the function and interactions of DELLA proteins in the moss Physcomitrium (Physcomitrella) patens, in the sister group of vascular plants (Bryophytes). PpDELLAs do not undergo the same regulation as flowering plant DELLAs. PpDELLAs are not degraded by diterpenes, do not interact with GID1 gibberellin receptor proteins and do not participate in responses to abiotic stress. PpDELLAs do share a function with vascular plant DELLAs during reproductive development. PpDELLAs also regulate spore germination. PpDELLAs interact with moss-specific photoreceptors although a function for PpDELLAs in light responses was not detected. PpDELLAs likely act as 'hubs' for transcriptional regulation similarly to their homologues across the plant kingdom. Taken together, these data demonstrate that PpDELLA proteins share some biological functions with DELLAs in flowering plants, but other DELLA functions and regulation evolved independently in both plant lineages.
Substances chimiques
Diterpenes
0
Plant Growth Regulators
0
Arabidopsis Proteins
0
Gibberellins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
654-672Subventions
Organisme : Biotechnology and Biological Sciences Research Council
ID : BB/M01116X/1
Pays : United Kingdom
Informations de copyright
© 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
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