Effect of water availability on changes in root amino acids and associated rhizosphere on root exudation of amino acids in Pisum sativum L.

Bobille, Hélène; Fustec, Joëlle; Robins, Richard J.; Cukier, Caroline; Limami, Anis M.

doi:10.1016/j.phytochem.2019.01.015

Cited by 25 publications

(13 citation statements)

References 72 publications

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“…This was a result of changes in the concentrations of TPAAs and TNPAAs, while trends in changes of TSCs, TOAs and total remaining compounds (TRCs) were generally like those in control plants (Table 1). The increase in amino acid content confirms previous reports on the effect of drought stress on the amino acid accumulation in pea leaves and roots [39,51,52]. Similar effects were found in the leaves of soybean [26,53] and wheat [33,54,55].…”

Section: Changes In Metabolic Profiles Under Drought/re-watering Cyclessupporting

confidence: 90%

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Changes in Metabolic Profiles of Pea (Pisum sativum L.) as a Result of Repeated Short-Term Soil Drought and Subsequent Re-Watering

Lahuta

Szablińska-Piernik

Horbowicz

2022

IJMS

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The metabolic re-arrangements of peas (Pisum sativum L.) under soil drought and re-watering are still not fully explained. The search for metabolic markers of the stress response is important in breeding programs, to allow for the selection drought-resistant cultivars. During the present study, changes in the polar metabolite content in pea plant shoots were measured under repeated short-term soil drought and subsequent re-watering. A gas chromatograph, equipped with a mass spectrometer (GC-MS), was used for the metabolite profiling of pea plants during their middle stage of vegetation (14–34 days after sowing, DAS). The major changes occurred in the concentration of amino acids and some soluble carbohydrates. Among them, proline, γ-aminobutyric acid (GABA), branched-chain amino acids, hydroxyproline, serine, myo-inositol, and raffinose were accumulated under each soil drought and decreased after re-watering. Besides, the obtained results show that the first drought/re-watering cycle increased the ability of pea plants to restore a metabolic profile similar to the control after the second similar stress. The accumulation of proline seems to be an important part of drought memory in pea plants. However, confirmation of this suggestion requires metabolite profiling studies on a broader spectrum of pea cultivars.

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Section: Changes In Metabolic Profiles Under Drought/re-watering Cyclessupporting

confidence: 90%

“…The accumulation of homoserine, but not asparagine, in pea leaves under drought has been shown previously [39,51]. It is possible that the drought-induced changes in homoserine, asparagine, and glutamine content were due to a disruption of phloem transport [52,70].…”

Section: Amino Acidsmentioning

confidence: 71%

Changes in Metabolic Profiles of Pea (Pisum sativum L.) as a Result of Repeated Short-Term Soil Drought and Subsequent Re-Watering

Lahuta

Szablińska-Piernik

Horbowicz

2022

IJMS

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“…S2-4). Similarly, other recent studies showed increased exudation of carbohydrates (Canarini et al 2016;Preece et al 2018;Calvo et al 2019), amino acids (Canarini et al 2016;Bobille et al 2019), organic acids (Canarini et al 2016) and secondary metabolites (Gargallo-Garriga et al 2018) at low soil water contents. Canarini et al (2016) also showed species specific responses at different soil water contents.…”

Section: Soil Type and Soil Moisture Regulate Root Exudationsupporting

confidence: 66%

Interactive regulation of root exudation and rhizosphere denitrification by plant metabolite content and soil properties

et al. 2021

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Aims Root exudates are known to shape microbial activities in the rhizosphere and to be of fundamental importance for plant-soil-microbe-carbon–nitrogen interactions. However, it remains unclear how and to what extent the amount and composition of root exudation affects rhizosphere denitrification. Methods In this study root exudation patterns and rhizosphere denitrification enzyme activity of three different grass species grown on two agricultural soils under two different soil water contents were investigated under controlled conditions. Results We found that root exudation of primary metabolites largely depends on plant species, soil type, soil moisture and root exudation medium. In dependence of soil properties and soil moisture levels, plants largely controlled amount and quality of root exudation. Exudates affected denitrification activity and plant–microbe competition for nitrate. Specifically, exudation of organic acids stimulated denitrifying activity while the sugar lyxose exhibited an inhibitory effect. Conclusion We show that interactive effects of physicochemical soil properties and species-specific effects of plant metabolism on root exudation act as a dominant control of rhizosphere denitrification, thereby explaining more than half of its variance.

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“…These substances influence the rhizosphere around roots to inhibit harmful microbes and promote plant growth ( Williams and de Vries, 2020 ). Root exudates contain a wide variety of molecules that are released into soil ( Bobille et al, 2019 ). They act as signaling messengers that allow for communication between microbes and roots ( Calvo et al, 2017 ).…”

Section: Effect Of Water Management On Root Physiological Processes In Ceamentioning

confidence: 99%

Response of Plant Rhizosphere Microenvironment to Water Management in Soil- and Substrate-Based Controlled Environment Agriculture (CEA) Systems: A Review

Tan

Liu

et al. 2021

Front. Plant Sci.

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As natural agroecology deteriorates, controlled environment agriculture (CEA) systems become the backup support for coping with future resource consumption and potential food crises. Compared with natural agroecology, most of the environmental parameters of the CEA system rely on manual management. Such a system is dependent and fragile and prone to degradation, which includes harmful bacteria proliferation and productivity decline. Proper water management is significant for constructing a stabilized rhizosphere microenvironment. It has been proved that water is an efficient tool for changing the availability of nutrients, plant physiological processes, and microbial communities within. However, for CEA issues, relevant research is lacking at present. The article reviews the interactive mechanism between water management and rhizosphere microenvironments from the perspectives of physicochemical properties, physiological processes, and microbiology in CEA systems. We presented a synthesis of relevant research on water–root–microbes interplay, which aimed to provide detailed references to the conceptualization, research, diagnosis, and troubleshooting for CEA systems, and attempted to give suggestions for the construction of a high-tech artificial agricultural ecology.

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Effect of water availability on changes in root amino acids and associated rhizosphere on root exudation of amino acids in Pisum sativum L.

Cited by 25 publications

References 72 publications

Changes in Metabolic Profiles of Pea (Pisum sativum L.) as a Result of Repeated Short-Term Soil Drought and Subsequent Re-Watering

Changes in Metabolic Profiles of Pea (Pisum sativum L.) as a Result of Repeated Short-Term Soil Drought and Subsequent Re-Watering

Interactive regulation of root exudation and rhizosphere denitrification by plant metabolite content and soil properties

Response of Plant Rhizosphere Microenvironment to Water Management in Soil- and Substrate-Based Controlled Environment Agriculture (CEA) Systems: A Review

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