Effect of methyl 3-4-hydroxyphenyl propionate, a Sorghum root exudate, on N dynamic, potential nitrification activity and abundance of ammonia-oxidizing bacteria and archaea

Nardi, Pierfrancesco; Akutsu, Masako; Pariasca‐Tanaka, Juan; Wissuwa, Matthias

doi:10.1007/s11104-012-1494-y

Cited by 52 publications

(30 citation statements)

References 34 publications

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“…However, these previous studies focused on the inhibitory effects of MHPP on soil nitrification and nitrogen loss (Nardi et al, 2013), and the effects of MHPP on root system growth and development have not been investigated. Several findings suggest that roots also might be targets of MHPP-mediated plant growth and development: (1) root-secreted secondary metabolites can regulate the growth and development of plants; (2) postembryonic root development is an auxin-driven plastic process that rapidly adapts to external changes; and (3) MHPP treatment enhances nutrient uptake by plants.…”

Section: Discussion Mhpp Affects Root System Development By Modulatinmentioning

confidence: 99%

“…grasses, have developed mechanisms to suppress nitrification via the exudation of specific secondary organic compounds from roots; this process is termed biological nitrification inhibition (BNI). Zakir et al (2008) found that the root exudates of sorghum (Sorghum bicolor) possess BNI activity, and a subsequent study confirmed that BNI activity was attributable to multiple components present in the sorghum exudate and identified the isolated phenolic substance methyl 3-(4-hydroxyphenyl)propionate (MHPP) as the main active compound (Nardi et al, 2013 ; Zakir et al, 2008). Although MHPP has been demonstrated to inhibit nitrification, no further studies have been undertaken to characterize the effect of MHPP as a root exudate on plant growth and root system development.…”

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confidence: 98%

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The Nitrification Inhibitor Methyl 3-(4-Hydroxyphenyl)Propionate Modulates Root Development by Interfering with Auxin Signaling via the NO/ROS Pathway

et al. 2016

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Methyl 3-(4-hydroxyphenyl)propionate (MHPP) is a root exudate that functions as a nitrification inhibitor and as a modulator of the root system architecture (RSA) by inhibiting primary root (PR) elongation and promoting lateral root formation. However, the mechanism underlying MHPP-mediated modulation of the RSA remains unclear. Here, we report that MHPP inhibits PR elongation in Arabidopsis (Arabidopsis thaliana) by elevating the levels of auxin expression and signaling. MHPP induces an increase in auxin levels by up-regulating auxin biosynthesis, altering the expression of auxin carriers, and promoting the degradation of the auxin/indole-3-acetic acid family of transcriptional repressors. We found that MHPP-induced nitric oxide (NO) production promoted reactive oxygen species (ROS) accumulation in root tips. Suppressing the accumulation of NO or ROS alleviated the inhibitory effect of MHPP on PR elongation by weakening auxin responses and perception and by affecting meristematic cell division potential. Genetic analysis supported the phenotype described above. Taken together, our results indicate that MHPP modulates RSA remodeling via the NO/ROS-mediated auxin response pathway in Arabidopsis. Our study also revealed that MHPP significantly induced the accumulation of glucosinolates in roots, suggesting the diverse functions of MHPP in modulating plant growth, development, and stress tolerance in plants.

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Section: Discussion Mhpp Affects Root System Development By Modulatinmentioning

confidence: 99%

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confidence: 98%

The Nitrification Inhibitor Methyl 3-(4-Hydroxyphenyl)Propionate Modulates Root Development by Interfering with Auxin Signaling via the NO/ROS Pathway

et al. 2016

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“…Root exudation includes a wide range of compounds, such as amino acids, low-molecular-weight organic acids, sugars, fatty acids, polyphenols, tannins, steroids, flavonoids, phenolics, terpenoids and alkaloids (see reviews by Lombi et al, 2000;Paterson, 2003;Nardi et al, 2013). Several investigations have observed that root-mediated C could affect the activity of enzymes related to soil N mineralization (Sinsabaugh & Moorhead, 1994;Ehrenfeld, 2006).…”

Section: Matching Plant N Preference With Soil N Transformationsmentioning

confidence: 99%

Terrestrial N cycling associated with climate and plant‐specific N preferences: a review

Zhang

Cai

Müller

2018

European J Soil Science

125

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The dramatic increase in anthropogenic reactive nitrogen (Nr) from agricultural activities negatively affects the environment. An additional challenge is to ensure food security while at the same time keeping the environmental impact to a minimum to prevent negative feedback effects on climate. To date, however, few studies have addressed the direct connection between soil N transformations, forms of N, species‐specific N preferences and climate, despite the fact that the fate of N and soil N biochemical cycling are known to be intimately linked. In this paper we review the connections between soil N transformation, species‐specific N preferences and climate, and explore how N‐use efficiency may be enhanced while minimizing the environmental effect. Gross rates of N mineralization and immobilization govern the amount of available N in soil, especially in natural ecosystems, while nitrification plays a central role in regulating the NO3− to NH4+ ratio. Plant species prefer either NH4+‐N or NO3−‐N, depending on the NO3−‐N to NH4+‐N ratio in their habitat. Thus, plant N uptake could be optimized (i.e. Nr losses reduced) if species‐specific N preferences are maintained by matching N sources applied with prevailing soil‐specific N transformations. Therefore, whether N management practices can optimize N‐use efficiencies hinges on the coupling of soil N transformation with climate and species‐specific N preferences. Highlights We review the inherent connections between the soil N cycle, plant N preference and climate. Nitrification plays a central role in regulating the NO3− to NH4+ ratio in soil and soil solution. Soil N transformations regulate the composition of hydrological N export. Plant N uptake can be optimized if soil N cycle is well matched with plant N preference.

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“…91, No. 3 Kleineidam et al, 2011Zeglin et al, 2011;Akiyama et al, 2013;Dai et al, 2013;Gong et al, 2013;Lehtovirta-Morley et al, 2013;Nardi et al, 2013;Taylor et al, 2013). One of the nitrification inhibitors with a promising potential for the discrimination between archaeal and bacterial ammonia oxidation is the copper-chelating, sulfur-containing allylthiourea (ATU).…”

Section: Introductionmentioning

confidence: 99%

Ammonia-limited conditions cause of Thaumarchaeal dominance in volcanic grassland soil

Daebeler

Bodelier

Hefting

et al. 2015

FEMS Microbiology Ecology

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One sentence summary: Our study supports the niche-differentiating potential of ammonium concentration for AOA and AOB, and we conclude that ammonium limitation can be a major reason for absence of detectable AOB in soil. Editor: Tillmann Lueders ABSTRACTThe first step of nitrification is carried out by ammonia-oxidizing bacteria (AOB) and archaea (AOA). It is largely unknown, by which mechanisms these microbes are capable of coexistence and how their respective contribution to ammonia oxidation may differ with varying soil characteristics. To determine how different levels of ammonium availability influence the extent of archaeal and bacterial contributions to ammonia oxidation, microcosm incubations with controlled ammonium levels were conducted. Net nitrification was monitored and ammonia-oxidizer communities were quantified. Additionally, the nitrification inhibitor allylthiourea (ATU) was applied to discriminate between archaeal and bacterial contributions to soil ammonia oxidation. Thaumarchaeota, which were the only ammonia oxidizers detectable at the start of the incubation, grew in all microcosms, but AOB later became detectable in ammonium amended microcosms. Low and high additions of ammonium increasingly stimulated AOB growth, while AOA were only stimulated by the low addition. Treatment with ATU had no effect on net nitrification and sizes of ammonia-oxidizing communities suggesting that the effective concentration of ATU to discriminate between archaeal and bacterial ammonia oxidation is not the same in different soils. Our results support the niche-differentiating potential of ammonium concentration for AOA and AOB, and we conclude that ammonium limitation can be a major reason for absence of detectable AOB in soil.

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Effect of methyl 3-4-hydroxyphenyl propionate, a Sorghum root exudate, on N dynamic, potential nitrification activity and abundance of ammonia-oxidizing bacteria and archaea

Cited by 52 publications

References 34 publications

The Nitrification Inhibitor Methyl 3-(4-Hydroxyphenyl)Propionate Modulates Root Development by Interfering with Auxin Signaling via the NO/ROS Pathway

The Nitrification Inhibitor Methyl 3-(4-Hydroxyphenyl)Propionate Modulates Root Development by Interfering with Auxin Signaling via the NO/ROS Pathway

Terrestrial N cycling associated with climate and plant‐specific N preferences: a review

Ammonia-limited conditions cause of Thaumarchaeal dominance in volcanic grassland soil

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