The effect of waterlogging on electrochemical properties and soluble nutrients in paddy soils

Matin, Narges Hemati; Jalali, Mohsen

doi:10.1007/s10333-016-0562-y

Cited by 22 publications

(10 citation statements)

References 47 publications

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“…It increased soil pH, C, and N, and influenced the concentration of several root macro-and micro-nutrients. Changes in soil pH is often reported as a consequence of waterlogging (Sun et al, 2007;Hemati Matin and Jalali, 2017) and it has been recognized as a main factor influencing the structure of bacterial microbiota across a wide range of soils and ecosystems (Fierer and Jackson, 2006;Lauber et al, 2009;Bardelli et al, 2017). Plant traits, such as root architecture and nutrient concentration are also commonly described as important drivers in structuring the root microbiota (Fitzpatrick et al, 2018;Schöps et al, 2018;Francioli et al, 2020), and their alterations might have important consequences in microbiota assembly (Leff et al, 2018;Pervaiz et al, 2020).…”

Section: Flooding Causes a Joint And Substantial Change In Plant Phenotype And Root Microbiotamentioning

confidence: 99%

Flooding Causes Dramatic Compositional Shifts and Depletion of Putative Beneficial Bacteria on the Spring Wheat Microbiota

et al. 2021

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Flooding affects both above- and below-ground ecosystem processes, and it represents a substantial threat for crop and cereal productivity under climate change. Plant-associated microbiota play a crucial role in plant growth and fitness, but we still have a limited understanding of the response of the crop-microbiota complex under extreme weather events, such as flooding. Soil microbes are highly sensitive to abiotic disturbance, and shifts in microbial community composition, structure and functions are expected when soil conditions are altered due to flooding events (e.g., anoxia, pH alteration, changes in nutrient concentration). Here, we established a pot experiment to determine the effects of flooding stress on the spring wheat-microbiota complex. Since plant phenology could be an important factor in the response to hydrological stress, flooding was induced only once and at different plant growth stages (PGSs), such as tillering, booting and flowering. After each flooding event, we measured in the control and flooded pots several edaphic and plant properties and characterized the bacterial community associated to the rhizosphere and roots of wheat plant using a metabarcoding approach. In our study, flooding caused a significant reduction in plant development and we observed dramatic shifts in bacterial community composition at each PGS in which the hydrological stress was induced. However, a more pronounced disruption in community assembly was always shown in younger plants. Generally, flooding caused a (i) significant increase of bacterial taxa with anaerobic respiratory capabilities, such as members of Firmicutes and Desulfobacterota, (ii) a significant reduction in Actinobacteria and Proteobacteria, (iii) depletion of several putative plant-beneficial taxa, and (iv) increases of the abundance of potential detrimental bacteria. These significant differences in community composition between flooded and control samples were correlated with changes in soil conditions and plant properties caused by the hydrological stress, with pH and total N as the soil, and S, Na, Mn, and Ca concentrations as the root properties most influencing microbial assemblage in the wheat mircobiota under flooding stress. Collectively, our findings demonstrated the role of flooding on restructuring the spring wheat microbiota, and highlighted the detrimental effect of this hydrological stress on plant fitness and performance.

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Section: Flooding Causes a Joint And Substantial Change In Plant Phenotype And Root Microbiotamentioning

confidence: 99%

Flooding Causes Dramatic Compositional Shifts and Depletion of Putative Beneficial Bacteria on the Spring Wheat Microbiota

et al. 2021

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“…Indeed, flooding dramatically affected plant and soil properties, such as soil pH and many root and leaf attributes, which in turn were significantly associated with shifts in the mycobiota structure across the wheat plants ( Table 3 ). Changes in soil pH are a commonly reported consequence of waterlogging ( Sun et al., 2007 ; Hemati Matin and Jalali, 2017 ), and it has been recognized as a key driver in structuring the mycobiota across a wide range of soils and ecosystems ( Fierer and Jackson, 2006 ; Lauber et al., 2009 ; Bardelli et al., 2017 ; Guo et al., 2020 ). Plant traits, such as root and leaf nutrient concentrations, have been widely described as important factors in shaping the plant mycobiota ( Kembel and Mueller, 2014 ; Fitzpatrick et al., 2018 ; Freschet et al., 2021 ), and their variations may significantly impact community assembly ( Leff et al., 2018 ; Ulbrich et al., 2021 ; Maywald et al., 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Response of the wheat mycobiota to flooding revealed substantial shifts towards plant pathogens

et al. 2022

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Rainfall extremes are intensifying as a result of climate change, leading to increased flood risk. Flooding affects above- and belowground ecosystem processes, representing a substantial threat to crop productivity under climate change. Plant-associated fungi play important roles in plant performance, but their response to abnormal rain events is unresolved. Here, we established a glasshouse experiment to determine the effects of flooding stress on the spring wheat-mycobiota complex. Since plant phenology could be an important factor in the response to hydrological stress, flooding was induced only once and at different plant growth stages, such as tillering, booting and flowering. We assessed the wheat mycobiota response to flooding in three soil-plant compartments (phyllosphere, roots and rhizosphere) using metabarcoding. Key soil and plant traits were measured to correlate physiological plant and edaphic changes with shifts in mycobiota structure and functional guilds. Flooding reduced plant fitness, and caused dramatic shifts in mycobiota assembly across the entire plant. Notably, we observed a functional transition consisting of a decline in mutualist abundance and richness with a concomitant increase in plant pathogens. Indeed, fungal pathogens associated with important cereal diseases, such as Gibberella intricans, Mycosphaerella graminicola, Typhula incarnata and Olpidium brassicae significantly increased their abundance under flooding. Overall, our study demonstrate the detrimental effect of flooding on the wheat mycobiota complex, highlighting the urgent need to understand how climate change-associated abiotic stressors alter plant-microbe interactions in cereal crops.

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“…2000 μg kg -1 DW of Fe in the roots during hypoxia. This concentration of Fe is extremely toxic to plants since the accumulation of Fe above 600 μg kg -1 DW was already considered harmful to soybean plants (Marschner 1995). Indeed, plants supplemented with 1.8 mM Fe presented intense leaf bronzing (Fig.…”

Section: High Fe Concentration Provokes Nutritional Imbalance In Soybean Plants During Hypoxiamentioning

confidence: 98%

“…Since the H + -ATPase pump consumes ATP for secondary active transport in roots, the energy shortage caused by hypoxia impairs ion transport processes (Mukherjee et al 1986). Thus, the hypoxia is known to impair the uptake of essential cations (K + , NH 4 + , and Mg 2+ ) and anions (NO 3 and SO 4 2-) (Marschner 1995;Morard et al 2004). In addition to the energy shortage for nutrient transport, hypoxia intensifies the nutritional imbalance by increasing the availability of Fe to the roots which hinders the absorption of other nutrients (Board 2008;Xu et al 2018).…”

Section: High Fe Concentration Provokes Nutritional Imbalance In Soybean Plants During Hypoxiamentioning

confidence: 99%

“…It is also possible that the decrease in the concentration of chlorophyll a and b occurred due to the less accumulation of Mg in the leaves since ca. 6% of the total Mg is bound to chlorophyll (Peterson et al 1993;Marschner 1995).…”

Section: High Fe Concentration Decreases the Photosynthetic Pigments Leaf Gas Exchange And The Accumulation Of Biomass During Hypoxiamentioning

confidence: 99%

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Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

Delias

da-Silva

Martins

et al. 2021

Environ Sci Pollut Res

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Iron toxicity is a major challenge faced by plants in hypoxic soils; however, the consequences of such combined stress for soybean (Glycine max) remain to be determined. Here we assessed the physiological responses of soybean plants exposed to hypoxia and a high concentration of iron. Soil-grown plants cultivated in a greenhouse until the vegetative stage were transferred to a hydroponic system containing nutrient solution and subjected to two oxygen conditions (normoxia (6.2 mg L -1 ) and hypoxia (0.33 mg L -1 )) and two iron concentrations (Fe-EDTA) (0.09 and 1.8 mM) for 72 h. During hypoxia, high concentrations of iron in the nutrient solution resulted in increased iron accumulation in roots and leaves. Under this condition, the concentrations of zinc, nitrogen, potassium, and calcium decreased in the roots, while the concentration of nitrogen and magnesium decreased in the leaves. Additionally, during hypoxia, the higher concentration of iron led to an increase in the activity of the antioxidant enzymes in roots and leaves, while decreased the levels of the photosynthetic pigments, leaf gas exchange, and plant growth. In conclusion, high iron concentration in the root medium results in a considerably more severe damage condition to soybean plants under hypoxia compared to plants grown under low iron availability.

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The effect of waterlogging on electrochemical properties and soluble nutrients in paddy soils

Cited by 22 publications

References 47 publications

Flooding Causes Dramatic Compositional Shifts and Depletion of Putative Beneficial Bacteria on the Spring Wheat Microbiota

Flooding Causes Dramatic Compositional Shifts and Depletion of Putative Beneficial Bacteria on the Spring Wheat Microbiota

Response of the wheat mycobiota to flooding revealed substantial shifts towards plant pathogens

Iron toxicity increases oxidative stress and impairs mineral accumulation and leaf gas exchange in soybean plants during hypoxia

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