Understanding source–sink interactions: Progress in model plants and translational research to crops

Rosado-Souza, Laíse; Yokoyama, Ryo; Sonnewald, Uwe; Fernie, Alisdair R.

doi:10.1016/j.molp.2022.11.015

Cited by 12 publications

(1 citation statement)

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“…The circadian regulation of metabolism is particularly well characterized in Arabidopsis (Bläsing et al., 2005; Haydon et al., 2013; Usadel et al., 2008), although other good models for source‐sink dynamics include Brachypodium distachyon (Kellogg, 2015), wheat (Lawlor & Paul, 2014), and the C 4 species Setaria viridis and maize (Martin et al., 2016; Rosado‐Souza et al., 2023), Here, we use studies of Arabidopsis to examine the circadian regulation of primary metabolism within plant organs functioning as a carbon source (e.g., leaves) and photoassimilate sinks (e.g., roots). We reason that roles for circadian regulation within these structures differ.…”

Section: Spatiotemporal Regulation Of Primary Metabolismmentioning

confidence: 99%

Circadian regulation of metabolism across photosynthetic organisms

et al. 2023

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SUMMARYCircadian regulation produces a biological measure of time within cells. The daily cycle in the availability of light for photosynthesis causes dramatic changes in biochemical processes in photosynthetic organisms, with the circadian clock having crucial roles in adaptation to these fluctuating conditions. Correct alignment between the circadian clock and environmental day–night cycles maximizes plant productivity through its regulation of metabolism. Therefore, the processes that integrate circadian regulation with metabolism are key to understanding how the circadian clock contributes to plant productivity. This forms an important part of exploiting knowledge of circadian regulation to enhance sustainable crop production. Here, we examine the roles of circadian regulation in metabolic processes in source and sink organ structures of Arabidopsis. We also evaluate possible roles for circadian regulation in root exudation processes that deposit carbon into the soil, and the nature of the rhythmic interactions between plants and their associated microbial communities. Finally, we examine shared and differing aspects of the circadian regulation of metabolism between Arabidopsis and other model photosynthetic organisms, and between circadian control of metabolism in photosynthetic and non‐photosynthetic organisms. This synthesis identifies a variety of future research topics, including a focus on metabolic processes that underlie biotic interactions within ecosystems.

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