The Pivotal Role of Ethylene in Plant Growth

Dubois, Marieke; Broeck, Lisa Van den; Inzé, Dirk

doi:10.1016/j.tplants.2018.01.003

Cited by 601 publications

(432 citation statements)

References 107 publications

(128 reference statements)

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“…A significant research effort is now developed to recruit these signals for biotechnological purposes (Pickett and Khan, 2016). Among the variety of those discovered over the years, ethylene plays a major role (Dubois et al, 2018). This hydrocarbon gas is both a hormone (allowing intercellular communication) and a pheromone (allowing communication with distant organisms).…”

Section: Preamblementioning

confidence: 99%

Revisiting the methionine salvage pathway and its paralogues

Sekowska

Ashida

Danchin

2018

Microbial Biotechnology

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SummaryMethionine is essential for life. Its chemistry makes it fragile in the presence of oxygen. Aerobic living organisms have selected a salvage pathway (the MSP) that uses dioxygen to regenerate methionine, associated to a ratchet‐like step that prevents methionine back degradation. Here, we describe the variation on this theme, developed across the tree of life. Oxygen appeared long after life had developed on Earth. The canonical MSP evolved from ancestors that used both predecessors of ribulose bisphosphate carboxylase oxygenase (RuBisCO) and methanethiol in intermediate steps. We document how these likely promiscuous pathways were also used to metabolize the omnipresent by‐products of S‐adenosylmethionine radical enzymes as well as the aromatic and isoprene skeleton of quinone electron acceptors.

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Section: Preamblementioning

confidence: 99%

Revisiting the methionine salvage pathway and its paralogues

Sekowska

Ashida

Danchin

2018

Microbial Biotechnology

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“…Ethylene is a gaseous phytohormone that plays vital roles in numerous cellular and developmental processes and also plays key roles in plant responses to biotic and abiotic stresses, triggering a wide range of physiological and morphological responses (Dubois, Van Der Broeck, & Inze, 2018;Guo & Ecker, 2004;Yoo, Cho, & Sheen, 2009). In Arabidopsis, ethylene signalling transduction signalling has been clearly investigated (Ju & Chang, 2015).…”

mentioning

confidence: 99%

Ethylene promotes cadmium‐induced root growth inhibition through EIN3 controlled XTH33 and LSU1 expression in Arabidopsis

Kong

Zhang

et al. 2018

Plant Cell & Environment

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Cadmium (Cd) stress is one of the most serious heavy metal stresses limiting plant growth and development. However, the molecular mechanisms underlying Cd-induced root growth inhibition remain unclear. Here, we found that ethylene signalling positively regulates Cd-induced root growth inhibition. Arabidopsis seedlings pretreated with the ethylene precursor 1-aminocyclopropane-1-carboxylic acid exhibited enhanced Cd-induced root growth inhibition, whereas the addition of the ethylene biosynthesis inhibitor aminoethoxyvinyl glycine decreased Cd-induced root growth inhibition. Consistently, ethylene-insensitive mutants, such as ein4-1, ein3-1 eil1-1 double mutant, and EBF1ox, displayed an increased tolerance to Cd. Furthermore, we also observed that Cd inhibited EIN3 protein degradation, a process that was regulated by ethylene signalling. Genetic and biochemical analyses showed that EIN3 enhanced root growth inhibition under Cd stress through direct binding to the promoters and regulating the expression of XTH33 and LSU1, which encode key regulators of cell wall extension and sulfur metabolic process, respectively. Collectively, our study demonstrates that ethylene plays a positive role in Cd-regulated root growth inhibition through EIN3-mediated transcriptional regulation of XTH33 and LSU1 and provides a molecular framework for the integration of environmental signals and intrinsic regulators in modulating plant root growth.

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“…There were 71 DEGs that were enriched in the response to ethylene GO 1 category (Additional file 3). Ethylene is a stress hormone that responds to 2 many types of biotic [47] and abiotic [48] stresses in addition to its role in fruit 3 development and ripening [49]. Many ethylene-related genes had a higher 4 transcript abundance in BOD berries.…”

Section: Ethylene Signaling Genes Higher In Bod 25mentioning

confidence: 99%