Root capacitance measurements allow non-intrusive in-situ monitoring of the seasonal dynamics and drought response of root activity in two grassland species

Cseresnyés, Imre; Rajkai, Kálmán; Szitár, Katalin; Radimszky, László; Ónodi, Gábor; Kröel‐Dulay, György

doi:10.1007/s11104-020-04505-4

Cited by 8 publications

(3 citation statements)

References 40 publications

(69 reference statements)

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“…Effects of acid on the root physiological resistance of L. perenne. Root activity directly affects the growth and development of plants (Cseresnyés et al 2020) and gives some insight into the tolerance of L. perenne to soil acid stress. The root activity of L. perenne was the lowest at pH 4.0 and significantly increased with greater soil pH.…”

Section: Discussionmentioning

confidence: 99%

Physiological and metabolic responses of Lolium perenne L. roots to acid stress in cadmium-contaminated soil

Bai,

Chen,

Wang

et al. 2024

PLANT SOIL ENVIRON

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Soil cadmium (Cd) pollution is one of the most important environmental problems in China and worldwide (Tan et al. 2021). Cd is one of the most toxic and transferable heavy metals. Most plants readily absorb Cd, which endangers human health through the build-up of the food chain (Ramana et al. 2021). Soil acidification affects Cd's chemical properties and activities, exacerbates Cd's toxicity to plants, and adversely affects plant growth (Xiang et al. 2018). Soil Cd pollution (Chen et al. 2024) and soil acidification (Duan et al. 2016) are particularly serious in southern China. Thus, it is imperative to find a solution to the issue of soil Cd pollution in acidic environments. Phytoremediation provides advantages, such as high efficiency, economically viable, and eco-friendly (Tan et al. 2023). For these reasons, it has attracted significant attention in the field of heavy metal pollution research (Yan et al. 2020, Liu et al. 2022, Oladoye et al. 2022). Hyperaccumulator plants enhance the removal capacity of heavy metals. More than 700 species

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Section: Discussionmentioning

confidence: 99%

Physiological and metabolic responses of Lolium perenne L. roots to acid stress in cadmium-contaminated soil

Bai,

Chen,

Wang

et al. 2024

PLANT SOIL ENVIRON

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“…to drought) shares many similarities with the process of natural plant senescence at the end of the growing season (Gepstein and Glick, 2013;Sade et al, 2018). Furthermore, it has been reported that several plant species showed a significant accelerated maturity in response to water limitation (Desclaux and Roumet, 1996;Talukdar, 2013;Cseresnyeś et al, 2020). To create a drought, pallets of the 'autumn treatment' were covered for six weeks prior to the flume experiment to exclude rainfall while the 'summer treatment' pallets were kept irrigated with freshwater (Schoutens et al, 2021).…”

Section: Plant Materialsmentioning

confidence: 96%

Species-specific and seasonal differences in the resistance of salt-marsh vegetation to wave impact

et al. 2022

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The coastal protection function provided by the vegetation of tidal wetlands (e.g. salt marshes) will play an important role in defending coastlines against storm surges in the future and depend on how these systems respond to such forcing. Extreme wave events may induce vegetation failure and thereby risking loss of functionality in coastal protection. However, crucial knowledge on how hydrodynamic forces affect salt-marsh vegetation and whether plant properties might influence plant resistance is missing. In a true-to-scale flume experiment, we exposed two salt-marsh species to extreme hydrodynamic conditions and quantified wave-induced changes in plant frontal area, which was used to estimate plant damage. Moreover, half of the plants were artificially weakened to induce senescence, thus allowing us to examine potential seasonal effects on plant resistance. Morphological, biomechanical as well as biochemical plant properties were assessed to better explain potential differences in wave-induced plant damage. Our results indicate that the plants were more robust than expected, with pioneer species Spartina anglica showing a higher resistance than the high-marsh species Elymus athericus. Furthermore, wave-induced plant damage mostly occurred in the upper part of the vegetation canopy and thus higher canopies (i.e. Elymus athericus) were more vulnerable to damage. Besides a taller canopy, Elymus athericus had weaker stems than Spartina anglica, suggesting that biomechanical properties (flexural stiffness) also played a role in defining plant resistance. Under the highest wave conditions, we also found seasonal differences in the vulnerability to plant damage but only for Elymus athericus. Although we found higher concentrations of a strengthening compound (biogenic silica) in the plant material of the weakened plants, the flexibility of the plant material was not affected indicating that the treatment might not has been applied long enough. Nevertheless, this study yields important implications since we demonstrate a high robustness of the salt-marsh vegetation as well as species-specific and seasonal differences in the vulnerability to plant damage.

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“…In the case of grasses, drought also causes a decrease in leaf water content, photosynthesis, respiration and root activity [31][32][33], which may cause a decrease in biomass production [34] and impair the nutritive value of the hay [35].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Macronutrient Supply Levels on the Drought Tolerance of Rainfed Grass Based on Biomass Production, Water Use Efficiency and Macroelement Content

Ragályi,

Szabó,

Rékási

et al. 2023

Horticulturae

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Water shortage, one of the main limiting factors for plant growth and development, can be alleviated by an adequate nutrient supply. The effect of different nitrogen (N), phosphorus (P) and potassium (K) supply levels and their combinations was examined in different rainfall supply periods (wet, normal, dry) on a grass sward in a field experiment. Dry and fresh aboveground biomass production were primarily increased by the N–rainfall supply interaction, from 0.739 to 6.51 and from 1.84 to 21.8 t ha−1, respectively, but the P–rainfall supply and N–P interactions and K treatment all had significant effects. Dry matter content was primarily influenced by the N–rainfall supply interaction, increasing in response to N in dry periods and declining in wet periods. Water use efficiency (WUE) was increased by the N–rainfall supply interaction from 28.3 to 127 kg ha−1 mm−1, but the N–P interaction had a similarly strong effect, and K treatment increased it in the dry period. The N, P and K contents of the aboveground biomass were increased by treatment with the corresponding element, but were also influenced by rainfall supply. The increase in biomass, mainly due to N treatment, caused the dilution of the P and K contents in grass in treatments poorly supplied with P and K. Biomass production and WUE were significantly improved up to a dose of 200 kg ha−1 year−1 of N, up to a supply level of 153 mg kg−1 of P2O5, and 279 mg kg−1 of K2O measured in the soil. Treating grass with the N, P and K macroelements may effectively increase biomass production and water use efficiency, but above a certain level their application is unnecessary.

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Root capacitance measurements allow non-intrusive in-situ monitoring of the seasonal dynamics and drought response of root activity in two grassland species

Cited by 8 publications

References 40 publications

Physiological and metabolic responses of Lolium perenne L. roots to acid stress in cadmium-contaminated soil

Physiological and metabolic responses of Lolium perenne L. roots to acid stress in cadmium-contaminated soil

Species-specific and seasonal differences in the resistance of salt-marsh vegetation to wave impact

Effect of Different Macronutrient Supply Levels on the Drought Tolerance of Rainfed Grass Based on Biomass Production, Water Use Efficiency and Macroelement Content

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