Unveiling nutrient flow-mediated stress in plant roots using an on-chip phytofluidic device

Agarwal, Kaushal; Mehta, Sumit Kumar; Mondal, Pranab Kumar

doi:10.1039/d4lc00180j

Lab Chip

2024

DOI: 10.1039/d4lc00180j

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Unveiling nutrient flow-mediated stress in plant roots using an on-chip phytofluidic device

Kaushal Agarwal,

Sumit Kumar Mehta,

Pranab Kumar Mondal

Abstract: PRFD is a miniaturized, hydroponic, PDMS-based device for on-chip growth and real-time micrography of plant root. Off-chip anatomical study and numerical simulations were conducted for analysing both plant and mechanical stress, respectively.

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Cited by 2 publications

References 85 publications

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Maximizing Blue Energy via Densely Grafted Soft Layers in Nanopores

Ismayeel,

Mehta,

Mondal

2024

Langmuir

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We investigate energy generation from salinity gradients inside a nanopore that is connected to reservoirs at both ends. We consider that the inner wall surfaces are grafted with a densely grafted polyelectrolyte layer (PEL). We developed the PEL grafting density-dependent correlation of dielectric permittivity, molecular diffusivity, and dynamic viscosity in this endeavor. Using these correlations, we employ the finite element framework to solve the equations describing the ionic and fluidic transport. We use a partially hydrolyzed polyacrylamide polymer solution, which exhibits a shear-thinning fluid, in combination with the KCl electrolyte for energy-harvesting analysis. To describe the shearrate-dependent apparent viscosity of non-Newtonian liquid, we have employed the Carreau model. For a window of right-side reservoir concentration, we investigate the effects of ion-partitioning in conjugation with the change in PEL grafting density on the ionic field, ionic selectivity, pore current, osmotic power, energy conversion efficiency, and flow field. The findings of this endeavor demonstrate how the ion-partitioning effect lowers the screening effect and raises the electrical double layer (EDL) potential by reducing the counterions in PEL. We show that the unique distribution of the ionic field leads to a higher prediction of generated osmotic power and power density due to the ion-parting effect. Additionally, we establish that the augmentation in PEL space charge density leads to improvement in average flow velocity, osmotic power, and consequently energy conversion efficiency. We establish that the generated osmotic power density and the energy conversion efficiency become very high at the higher grafting density. In summary, inferences of this analysis are deemed pertinent in designing the nanoscale device intended for high and efficient osmotic energy generation.

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Maximizing Blue Energy via Densely Grafted Soft Layers in Nanopores

Ismayeel,

Mehta,

Mondal

2024

Langmuir

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Soft plant root structure-media flow interactions: Exploring the adverse effect of lead contamination in North-Eastern Indian rice

Panja,

Mehta,

Kalita

et al. 2024

Physics of Fluids

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We experimentally investigate the effect of lead (Pb2+) contamination on the roots of an Assamese rice line variety Lachit using a heavy metal analyzing fluidic tool. To demonstrate the adverse effects of lead contamination on rice seedlings in a controlled environment, we have performed a number of multidisciplinary experiments. Also, we develop a numerical model in this endeavor to predict the Michaelis–Menten kinetics parameters, which are used to depict the lead transport phenomenon following soft root structure-media flow interactions. We show that increased inlet lead concentration of the media solution leads to a reduction in root growth exponentially in the developed fluidic device. As supported by the Raman spectra analysis, the drastic metabolic changes are visible under lead contamination. Our results revel that, in comparison to the control condition, lead accumulation results in a decrease in the uptake of nitrogen and also, the metallic nutritional components (K+, Na+, and Ca2+). Under lead contamination, the average osmotic pressure difference at the root surface is seen to be less than in the control situation. The inferences drawn from the current research shed light on the detrimental effects of lead contamination on rice roots, which have the potential to significantly lower agricultural yields and threaten food security in areas where rice is the primary food source.

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Unveiling nutrient flow-mediated stress in plant roots using an on-chip phytofluidic device

Abstract: PRFD is a miniaturized, hydroponic, PDMS-based device for on-chip growth and real-time micrography of plant root. Off-chip anatomical study and numerical simulations were conducted for analysing both plant and mechanical stress, respectively.

Cited by 2 publications

References 85 publications

Maximizing Blue Energy via Densely Grafted Soft Layers in Nanopores

Maximizing Blue Energy via Densely Grafted Soft Layers in Nanopores

Soft plant root structure-media flow interactions: Exploring the adverse effect of lead contamination in North-Eastern Indian rice

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