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

Ma, Ming; Wendehenne, David; Philippot, Laurent; Hänsch, Robert; Flemetakis, Emmanouil; Hu, Bin; Rennenberg, Heinz

doi:10.1111/pce.13850

Cited by 21 publications

(5 citation statements)

References 228 publications

(272 reference statements)

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“…NO has also been extensively proven to be involved in root development [ 8 , 34 , 35 ]. Previous investigations reported that the application of NO donors to different plant species roots promotes the formation of adventitious and lateral roots, root hair development, and root tip elongation, emphasizing the function of NO in root organogenesis [ 36 , 37 , 38 ].…”

Section: Discussionmentioning

confidence: 99%

“…In plants, nitric oxide (NO) is known as a small but important multifunctional bioactive signaling molecule and plays a critical function as a regulator of plant growth and development, including germination [ 7 ], root growth [ 8 ], flowering [ 9 ], and senescence [ 10 ]. Besides its function in the regulation of plant developmental processes, NO has been found to regulate plant response to stresses caused by heavy metal toxicity [ 11 , 12 ], water deficit [ 13 , 14 ], low-light intensity [ 15 ], salt stress [ 16 ], paraquat toxicity [ 17 ], and plant pathogen [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

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Nitric Oxide Induced by Ammonium/Nitrate Ratio Ameliorates Low-Light Stress in Brassica pekinesis: Regulation of Photosynthesis and Root Architecture

Gao

et al. 2023

IJMS

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Low-light intensity affects plant growth and development and, finally, causes a decrease in yield and quality. There is a need for improved cropping strategies to solve the problem. We previously demonstrated that moderate ammonium:nitrate ratio (NH4+:NO3−) mitigated the adverse effect caused by low-light stress, although the mechanism behind this alleviation is unclear. The hypothesis that the synthesis of nitric oxide (NO) induced by moderate NH4+:NO3− (10:90) involved in regulating photosynthesis and root architecture of Brassica pekinesis subjected to low-light intensity was proposed. To prove the hypothesis, a number of hydroponic experiments were conducted. The results showed that in plants exposed to low-light intensity, the exogenous donors NO (SNP) and NH4+:NO3− (N, 10:90) treatments significantly increased leaf area, growth range, and root fresh weight compared with nitrate treatment. However, the application of hemoglobin (Hb, NO scavenger), N-nitro-l-arginine methyl ester (L-NAME, NOS inhibitor), and sodium azide (NaN3, NR inhibitor) in N solution remarkably decreased the leaf area, canopy spread, the biomass of shoot and root, the surface area, and volume and tips of the root. The application of N solution and exogenous SNP significantly enhanced Pn (Net photosynthetic rate) and rETR (relative electron transport rates) compared with solo nitrate. While all these effects of N and SNP on photosynthesis, such as Pn, Fv/Fm (maximum quantum yield of PSII), Y(II) (actual photosynthetic efficiency), qP (photochemical quenching), and rETR were reversed when the application of Hb, L-NAME, and NaN3 in N solution. The results also showed that the N and SNP treatments were more conducive to maintaining cell morphology, chloroplast structure, and a higher degree of grana stacking of low-light treated plants. Moreover, the application of N significantly increased the NOS and NR activities, and the NO levels in the leaves and roots of mini Chinese cabbage seedlings treated with N were significantly higher than those in nitrate-treated plants. In conclusion, the results of this study showed that NO synthesis induced by the appropriate ammonia–nitrate ratio (NH4+: NO3− = 10:90) was involved in the regulation of photosynthesis and root structure of Brassica pekinesis under low-light stress, effectively alleviating low-light stress and contributing to the growth of mini Chinese cabbage under low-light stress.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nitric Oxide Induced by Ammonium/Nitrate Ratio Ameliorates Low-Light Stress in Brassica pekinesis: Regulation of Photosynthesis and Root Architecture

Gao

et al. 2023

IJMS

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“…RNS is the second most significant messenger after ROS, and its component nitric oxide (NO) is a momentous endogenous molecule of signal that can scavenge ROS directly or induce the antioxidant defense system to scavenge ROS in vivo [39]. Under heavy metal stress, the donor of NO is a single nucleotide polymorphism marker (SNP), which significantly increases the activity of antioxidant enzymes such as SOD, CAT, ascorbate peroxidase (APX), and GST [40], and enhances the content of indole-3-acetic acid (IAA) and gibberellin (GA), resulting in the reduction in ROS production and heavy metal toxicity [41]. Figure 1 shows the mechanisms of heavy metal tolerance in energy crops.…”

Section: Mechanisms Of Heavy Metal Tolerance In Energy Cropsmentioning

confidence: 99%

Molecular Basis of Energy Crops Functioning in Bioremediation of Heavy Metal Pollution

Huang,

Lu,

Zhao

et al. 2024

Agriculture

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Heavy metal pollution is a gradually growing environmental issue that hinders the growth and development of plants, and also destabilizes soil. Consequently, eco-friendly phytoremediation methods have gained traction, with energy crops emerging as a particularly effective solution. Energy crops not only provide high-quality plant materials for detoxification and remediation of heavy metal pollution, but also possess energy properties conducive to biofuel production. Therefore, this paper delves into the tolerance mechanism of energy crops towards heavy metal toxicity, elucidating processes such as root complex-mediated inhibition of metal migration and response to reactive oxygen species (ROS) through heavy metal-related proteins, enzyme systems, reactive nitrogen species (RNS), and hormones. Moreover, it summarizes the heavy metals remediation mechanisms of energy crops, including uptake, translocation, chelation, immobilization, and sequestration. This paper explores applications of energy crops in heavy metal pollution remediation, emphasizing the methods for efficient biochar remediation and biofuel generation. Furthermore, potential challenges in using energy crops for heavy metal pollution remediation are outlined. By systematically examining the function mechanisms and prospective applications of energy crops in heavy metal pollution bioremediation, this paper serves as a valuable reference for both research and practical implementation in this field.

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“…Nitric oxide (NO) plays a versatile role in plant growth and development, including the roots [ 33 ]. For example, the NO signal, leading to decreased cell division and promoted cell differentiation in root meristems, is accumulated by abiotic stimuli, such as salt stress [ 34 ].…”

Section: Developmental Plasticity Via the Primary Apical Meristems Un...mentioning

confidence: 99%

Salinity-Triggered Responses in Plant Apical Meristems for Developmental Plasticity

Yang

Lee

2023

IJMS

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Salt stress severely affects plant growth and development. The plant growth and development of a sessile organism are continuously regulated and reformed in response to surrounding environmental stress stimuli, including salinity. In plants, postembryonic development is derived mainly from primary apical meristems of shoots and roots. Therefore, to understand plant tolerance and adaptation under salt stress conditions, it is essential to determine the stress response mechanisms related to growth and development based on the primary apical meristems. This paper reports that the biological roles of microRNAs, redox status, reactive oxygen species (ROS), nitric oxide (NO), and phytohormones, such as auxin and cytokinin, are important for salt tolerance, and are associated with growth and development in apical meristems. Moreover, the mutual relationship between the salt stress response and signaling associated with stem cell homeostasis in meristems is also considered.

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

Cited by 21 publications

References 228 publications

Nitric Oxide Induced by Ammonium/Nitrate Ratio Ameliorates Low-Light Stress in Brassica pekinesis: Regulation of Photosynthesis and Root Architecture

Nitric Oxide Induced by Ammonium/Nitrate Ratio Ameliorates Low-Light Stress in Brassica pekinesis: Regulation of Photosynthesis and Root Architecture

Molecular Basis of Energy Crops Functioning in Bioremediation of Heavy Metal Pollution

Salinity-Triggered Responses in Plant Apical Meristems for Developmental Plasticity

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