Formation and possible roles of nitric oxide in plant roots

Stöhr, Christine; Stremlau, Stefanie

doi:10.1093/jxb/erj058

Cited by 218 publications

(116 citation statements)

References 63 publications

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“…Remarkably, the experiments with tungstate also point at NR as a possible source of NO. However, further investigation is surely needed to fully address this issue, in particular the evaluation of the involvement of other enzymatic systems such as the plasma membrane-bound nitrite/NO reductase (Stöhr and Stremlau 2006;Moche et al 2010) or a NOS-like enzyme whose molecular identities are unfortunately still to be elucidated. In conclusion, our cellular and genetic data provide the first evidence for the occurrence of NO in the plant's early response to AM fungal signals and suggest NO accumulation as a novel component of the AM signaling pathway.…”

Section: Discussionmentioning

confidence: 99%

The exudate from an arbuscular mycorrhizal fungus induces nitric oxide accumulation in Medicago truncatula roots

et al. 2011

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Nitric oxide (NO) is a signaling molecule involved in plant responses to abiotic and biotic stresses. While there is evidence for NO accumulation during legume nodulation, almost no information exists for arbuscular mycorrhizas (AM). Here, we investigated the occurrence of NO in the early stages of Medicago truncatulaGigaspora margarita interaction, focusing on the plant response to fungal diffusible molecules. NO was visualized in root organ cultures and seedlings by confocal microscopy using the specific probe 4,5-diaminofluorescein diacetate. Five-minute treatment with the fungal exudate was sufficient to induce significant NO accumulation. The specificity of this response to AM fungi was confirmed by the lack of response in the AM nonhost Arabidopsis thaliana and by analyzing mutants impaired in mycorrhizal capacities. NO buildup resulted to be partially dependent on DMI1, DMI2, and DMI3 functions within the so-called common symbiotic signaling pathway which is shared between AM and nodulation. Significantly, NO accumulation was not induced by the application of purified Nod factor, while lipopolysaccharides from Escherichia coli, known to elicit defense-related NO production in plants, induced a significantly different response pattern. A slight upregulation of a nitrate reductase (NR) gene and the reduction of NO accumulation when the enzyme is inhibited by tungstate suggest NR as a possible source of NO. Genetic and cellular evidence, therefore, suggests that NO accumulation is a novel component in the signaling pathway that leads to AM symbiosis.

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Section: Discussionmentioning

confidence: 99%

The exudate from an arbuscular mycorrhizal fungus induces nitric oxide accumulation in Medicago truncatula roots

et al. 2011

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“…Accumulating evidence has pointed to NO (nitric oxide) as a signaling molecule involved in physiological and developmental processes in higher plants, such as root growth (Pagnussat et al, 2002), leaf expansion , and the cytokinin signaling pathway (Stöhr and Stremlau, 2006), as well as in responses to stresses, including to drought in wheat (Triticum spp. ; García-Mata and Lamattina, 2001), high temperature in Lucerne, Switzerland, low temperature in tomato (Solanum lycopersicum), wheat, and maize (Cueto et al, 1996); Al toxicity in rice bean (Vigna umbellata; Zhou et al, 2012); Fe deficiency in Arabidopsis (Chen et al, 2010b); and P deficiency in white lupin (Lupinus albus; Meng et al, 2012).…”

mentioning

confidence: 99%

Differential effects of nitrogen forms on cell wall phosphorus remobilization in rice (Oryza sativa) are mediated by nitric oxide, pectin content and the expression of the phosphate transporter OsPT2

Zhu¹,

Zhu²,

Hu³

et al. 2016

Plant Physiol.

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+ is a major source of inorganic nitrogen for rice (Oryza sativa), and NH 4 + is known to stimulate the uptake of phosphorus (P). However, it is unclear whether NH 4 + can also stimulate P remobilization when rice is grown under P-deficient conditions. In this study, we use the two rice cultivars 'Nipponbare' and 'Kasalath' that differ in their cell wall P reutilization, to demonstrate that NH 4 + positively regulates the pectin content and activity of pectin methylesterase in root cell walls under 2P conditions, thereby remobilizing more P from the cell wall and increasing soluble P in roots and shoots. Interestingly, our results show that more NO (nitric oxide) was produced in the rice root when NH 4 + was applied as the sole nitrogen source compared with the NO 3 2. The effect of NO on the reutilization of P from the cell walls was further demonstrated through the application of the NO donor SNP (sodium nitroprusside) and c-PTIO (NO scavenger 2-(4-carboxyphenyl)-4, 4, 5, 5-tetramethylimidazoline-1-oxyl-3-oxide). What's more, the P-transporter gene OsPT2 is up-regulated under NH 4 + supplementation and is therefore involved in the stimulated P remobilization. In conclusion, our data provide novel (to our knowledge) insight into the regulatory mechanism by which NH 4 + stimulates Pi reutilization in cell walls of rice.

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“…We concluded that the changing law of these anti-stress indicators took a tendency of 'slow-rapid-slow' curve, which is in agreement with the curve of plant growth periodicity coincidently. This viewpoint brought out the plastic responses of plants to stress environments, which is of great importance to understand deeply crop speciation and diversity evolution [48,49]. The above work also helps conduct global dryland farming, water-saving agriculture, and vegetation restoration practice.…”

Section: Summary Of the Related Work From Our Laboratory And Its Extementioning

confidence: 99%

“…In addition, because of coordinated evolution of transcriptional elements and of their regulating metabolic pathways, the genetically modifying strategy for the same transcriptional element could produce different phenotypes in different crop species. These issues need deeper exploration to establish an efficient genetically modifying system by transcriptional elements and their network system for improving crop stress resistance and global eco-environment and feeding the world [2,14,33,34,[48][49][50][51][52][53].…”

Section: Plant Gene Regulatory Network System and Crop Drought Resistmentioning

confidence: 99%

“…The elucidation of it will extremely and purposefully promote the sustainable utilization of plant resources and make the best use of its current potential at different scales [27,28,[34][35][36][37][38][39][40][41][42][43]. This molecular mechanism at least includes environmental signal recognition (input), signal transduction (many cascade biochemical reactions are involved in this process), signal output, signal responses and phenotype realization, which is a multi-dimension network system and contains many levels of gene expression and regulation [43][44][45][46][47][48][49][50][51][52][53]. On the basis of our recent work [42][43][44][45][46][47][48][49] and related publications from other laboratories over the world, we will focus on some important aspects involved in the mutual-responding relationship between plants and environment under abiotic stresses (e.g., drought, salinity, and high temperatures), and draw a possible blueprint for this frontier field between crop biology and plant biology.…”

Section: Introductionmentioning

confidence: 99%

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The responding relationship between plants and environment is the essential principle for agricultural sustainable development on the globe

Zhou

Shao

2008

Comptes Rendus. Biologies

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The mutual-responding relationship between plants and environment is involved in all life processes, which are the essential bases for different types of sustainable development on the globe, particularly the critical basis for agricultural sustainable development. How to regulate the above relationship between plants and the corresponding environment (in particular soil environment) is the key problem to modern sustainable agriculture development under global climate change, which is one of the hot topics in the field of plant biology. Detailed dissection of this responding relationship is also important for conducting global eco-environmental restoration and construction. Although powerful methodology and dataset related to genomics, post-genomics, and metabolomics have provided some insights into this relationship, crop physiological measures are also critical for crop full performance in field. With the increase of tested plants (including model plants) and development of integrated molecular biology, a complete understanding of the relationship at different scales under biotic and abiotic stresses will be accelerated. In the current paper, we will cover some important aspects in combination with the recent work from our laboratory and related advances reflected by international academic journals, as follows: plant physiological function performance under natural condition, plant gene regulatory network system under abiotic stresses, gene regulatory network system and drought resistance improvement, summary of the related work from our laboratory, conclusions, and acknowledgement.

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Formation and possible roles of nitric oxide in plant roots

Cited by 218 publications

References 63 publications

The exudate from an arbuscular mycorrhizal fungus induces nitric oxide accumulation in Medicago truncatula roots

The exudate from an arbuscular mycorrhizal fungus induces nitric oxide accumulation in Medicago truncatula roots

Differential effects of nitrogen forms on cell wall phosphorus remobilization in rice (Oryza sativa) are mediated by nitric oxide, pectin content and the expression of the phosphate transporter OsPT2

The responding relationship between plants and environment is the essential principle for agricultural sustainable development on the globe

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