The era of nitric oxide in plant biology: Twenty years tying up loose ends

Castello, Fiorella Del; Nejamkin, Andrés; Cassia, Raúl; Correa‐Aragunde, Natalia; Fernández, Belén; Foresi, Noelia; Lombardo, Cristina; Ramírez, Leonor; Lamattina, Lorenzo

doi:10.1016/j.niox.2019.01.013

Cited by 99 publications

(72 citation statements)

References 116 publications

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“…Ample evidence showed that NO, acting as a signaling molecule, can regulate a wide range of plant processes from environmental adaptation to development and the latter of which includes seed germination and root organogenesis [29,[68][69][70][71][72][73]. Our subsequent experiment revealed that NO may be involved in MWCNT-induced LR formation.…”

Section: Discussionmentioning

confidence: 69%

A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric Oxide

et al. 2020

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Abundant studies revealed that multi-walled carbon nanotubes (MWCNTs) are toxic to plants. However, whether or how MWCNTs influence lateral root (LR) formation, which is an important component of the adaptability of the root system to various environmental cues, remains controversial. In this report, we found that MWCNTs could enter into tomato seedling roots. The administration with MWCNTs promoted tomato LR formation in an approximately dose-dependent fashion. Endogenous nitric oxide (NO) production was triggered by MWCNTs, confirmed by Greiss reagent method, electron paramagnetic resonance (EPR), and laser scanning confocal microscopy (LSCM), together with the scavenger of NO. A cause-effect relationship exists between MWCNTs and NO in the induction of LR development, since MWCNT-triggered NO synthesis and LR formation were obviously blocked by the removal of endogenous NO with its scavenger. The activity of NO generating enzyme nitrate reductase (NR) was increased in response to MWCNTs. Tungstate inhibition of NR not only impaired NO production, but also abolished LR formation triggered by MWCNTs. The addition of N G-nitro-L-arginine methyl ester (L-NAME), an inhibitor of mammalian nitric oxide synthase (NOS)-like enzyme, failed to influence LR formation. Collectively, we proposed that NO might act as a downstream signaling molecule in MWCNT control of LR development, at least partially via NR.

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Section: Discussionmentioning

confidence: 69%

A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric Oxide

et al. 2020

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“…Yet whether the stress triggered chromatin modifications are dominantly mediated by the redox intermediates remains to be determined. Additionally, NADPH oxidase, and multiple antioxidant enzymes contribute to ROS generation and scavenging, respectively, and nitrate reductase and NO synthase-like enzymes are responsible for NO biosynthesis in plants [18,47,54,55]. However, whether these enzymes play important roles in epigenetic modifications is unclear.…”

Section: Discussionmentioning

confidence: 99%

Redox Components: Key Regulators of Epigenetic Modifications in Plants

Wang

Zhang

et al. 2020

IJMS

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Epigenetic modifications including DNA methylation, histone modifications, and chromatin remodeling are crucial regulators of chromatin architecture and gene expression in plants. Their dynamics are significantly influenced by oxidants, such as reactive oxygen species (ROS) and nitric oxide (NO), and antioxidants, like pyridine nucleotides and glutathione in plants. These redox intermediates regulate the activities and expression of many enzymes involved in DNA methylation, histone methylation and acetylation, and chromatin remodeling, consequently controlling plant growth and development, and responses to diverse environmental stresses. In recent years, much progress has been made in understanding the functional mechanisms of epigenetic modifications and the roles of redox mediators in controlling gene expression in plants. However, the integrated view of the mechanisms for redox regulation of the epigenetic marks is limited. In this review, we summarize recent advances on the roles and mechanisms of redox components in regulating multiple epigenetic modifications, with a focus of the functions of ROS, NO, and multiple antioxidants in plants.

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“…In plants, evidence for the existence of both, reductive and oxidative NO synthesis has been published (Moreau et al, 2019) ( Figure 1). The NO-producing enzymes identified in plants are nitrate reductase (NR, Yamasaki & Sakihama, 2000) and NO synthase (NOS)-like proteins (Manoli et al, 2014 Tegeder, 2019;del Castello et al, 2019). The internal production of NO by the reduction of nitrite can be induced either enzymatically, by nitrate reductase and nitrite reductase activities, or nonenzymatically (at hypoxia and acidic pH).…”

Section: Nitric Oxide Production and Consumption In Root Cellsmentioning

confidence: 99%

“…Many lines of evidence revealed a direct correlation between NO effects on root growth and hormonal signalling, including auxin (IAA), salicylic acid (SA), jasmonic acid (JA), abscisic acid (ABA) and cytokinin (Ck) signalling (del Castello et al, 2019;Lombardo & Lamattina, 2018;Sanz et al, 2015;Sun et al, 2009;Zhao et al, 2015). Studies addressing the functional link between NO and auxin are particularly relevant (Figure 2).…”

Section: Root Growth Development and Functionsmentioning

confidence: 99%

Physiological significance of pedospheric nitric oxide for root growth, development and organismic interactions

Wendehenne

Philippot

et al. 2020

Plant Cell & Environment

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Nitric oxide (NO) is essential for plant growth and development, as well as interactions with abiotic and biotic environments. Its importance for multiple functions in plants means that tight regulation of NO concentrations is required. This is of particular significance in roots, where NO signalling is involved in processes, such as root growth, lateral root formation, nutrient acquisition, heavy metal homeostasis, symbiotic nitrogen fixation and root–mycorrhizal fungi interactions. The NO signal can also be produced in high levels by microbial processes in the rhizosphere, further impacting root processes. To explore these interesting interactions, in the present review, we firstly summarize current knowledge of physiological processes of NO production and consumption in roots and, thereafter, of processes involved in NO homeostasis in root cells with particular emphasis on root growth, development, nutrient acquisition, environmental stresses and organismic interactions.

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The era of nitric oxide in plant biology: Twenty years tying up loose ends

Cited by 99 publications

References 116 publications

A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric Oxide

A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric Oxide

Redox Components: Key Regulators of Epigenetic Modifications in Plants

Physiological significance of pedospheric nitric oxide for root growth, development and organismic interactions

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