Deregulation of ζ-carotene desaturase in Arabidopsis and tomato exposes a unique carotenoid-derived redundant regulation of floral meristem identity and function.

Autor: McQuinn RP; Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia., Leroux J; Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia., Sierra J; Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico., Escobar-Tovar L; Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico., Frusciante S; Italian National Agency for New Technologies, Energy, and Sustainable Development (ENEA), Casaccia Research Center, Rome, 00196, Italy., Finnegan EJ; CSIRO Agriculture and Food, Canberra, ACT, 2601, Australia., Diretto G; Italian National Agency for New Technologies, Energy, and Sustainable Development (ENEA), Casaccia Research Center, Rome, 00196, Italy., Giuliano G; Italian National Agency for New Technologies, Energy, and Sustainable Development (ENEA), Casaccia Research Center, Rome, 00196, Italy., Giovannoni JJ; US Department of Agriculture-Agricultural Research Service, Robert W. Holley Center for Agriculture and Health, Ithaca, NY, 14853, USA., León P; Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico., Pogson BJ; Australian Research Council Centre of Excellence in Plant Energy Biology, Research School of Biology, Australian National University, Canberra, ACT, 2601, Australia.
Jazyk: angličtina
Zdroj: The Plant journal : for cell and molecular biology [Plant J] 2023 May; Vol. 114 (4), pp. 783-804. Date of Electronic Publication: 2023 Mar 31.
DOI: 10.1111/tpj.16168
Abstrakt: A level of redundancy and interplay among the transcriptional regulators of floral development safeguards a plant's reproductive success and ensures crop production. In the present study, an additional layer of complexity in the regulation of floral meristem (FM) identity and flower development is elucidated linking carotenoid biosynthesis and metabolism to the regulation of determinate flowering. The accumulation and subsequent cleavage of a diverse array of ζ-carotenes in the chloroplast biogenesis 5 (clb5) mutant of Arabidopsis results in the reprogramming of meristematic gene regulatory networks establishing FM identity mirroring that of the FM identity master regulator, APETALA1 (AP1). The immediate transition to floral development in clb5 requires long photoperiods in a GIGANTEA-independent manner, whereas AP1 is essential for the floral organ development of clb5. The elucidation of this link between carotenoid metabolism and floral development translates to tomato exposing a regulation of FM identity redundant to and initiated by AP1 and proposed to be dependent on the E class floral initiation and organ identity regulator, SEPALLATA3 (SEP3).
(© 2023 The Authors. The Plant Journal published by Society for Experimental Biology and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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