Spatiotemporal oxygen dynamics in young leaves reveal cyclic hypoxia in plants.

Autor: Triozzi PM; PlantLab, Center of Plant Sciences, Sant'Anna School of Advanced Studies, 56010 Pisa, Italy; Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Campus de Montegancedo UPM, Pozuelo de Alarcón, 28223 Madrid, Spain., Brunello L; PlantLab, Center of Plant Sciences, Sant'Anna School of Advanced Studies, 56010 Pisa, Italy., Novi G; PlantLab, Center of Plant Sciences, Sant'Anna School of Advanced Studies, 56010 Pisa, Italy., Ferri G; Fondazione Pisana per la Scienza, 56017 Pisa, Italy., Cardarelli F; Laboratorio NEST, Scuola Normale Superiore, Istituto Nanoscienze-CNR, Piazza S. Silvestro, 12, 56127 Pisa, Italy., Loreti E; Institute of Agricultural Biology and Biotechnology, National Research Council, 56124 Pisa, Italy., Perales M; Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Campus de Montegancedo UPM, Pozuelo de Alarcón, 28223 Madrid, Spain; Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain., Perata P; PlantLab, Center of Plant Sciences, Sant'Anna School of Advanced Studies, 56010 Pisa, Italy. Electronic address: p.perata@santannapisa.it.
Jazyk: angličtina
Zdroj: Molecular plant [Mol Plant] 2024 Mar 04; Vol. 17 (3), pp. 377-394. Date of Electronic Publication: 2024 Jan 19.
DOI: 10.1016/j.molp.2024.01.006
Abstrakt: Oxygen is essential for plant growth and development. Hypoxia occurs in plants due to limited oxygen availability following adverse environmental conditions as well in hypoxic niches in otherwise normoxic environments. However, the existence and functional integration of spatiotemporal oxygen dynamics with plant development remains unknown. In animal systems dynamic fluctuations in oxygen availability are known as cyclic hypoxia. In this study, we demonstrate that cyclic fluctuations in internal oxygen levels occur in young emerging leaves of Arabidopsis plants. Cyclic hypoxia in plants is based on a mechanism requiring the ETHYLENE RESPONSE FACTORS type VII (ERFVII) that are central components of the oxygen-sensing machinery in plants. The ERFVII-dependent mechanism allows precise adjustment of leaf growth in response to carbon status and oxygen availability within plant cells. This study thus establishes a functional connection between internal spatiotemporal oxygen dynamics and developmental processes of plants.
(Copyright © 2024 The Author. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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