Institutional Publications

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Author: search.filters.author.Soni, PraveenSubject: search.filters.subject.Mechanism

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    Regulation of metalloid uptake in plants by transporters and their solute specificity
    (Elsevier B.V., 2023) Sharma, Yogesh; Soni, Praveen; Raturi, Gaurav; Mandlik, Rushil; Rachappanavar, Vinay Kumar; Kumar, Manish; Salvi, Prafull; Tripathi, Durgesh Kumar; Ram, Hasthi; Deshmukh, Rupesh
    Metalloids are a class of elements having properties like metals and non-metals which act as beneficial as well as hazardous for plant growth. Here, the precise role and molecular mechanism involved in the uptake and transport of different metalloids to different plant tissues is discussed. We have also described the efforts made to engineer the metalloid transport i.e. influx/efflux of metalloids that improve the uptake of beneficial metalloids and reduce hazardous metalloids. Metalloids like boron (B) and silicon (Si) play a beneficial role in plant growth and development. Optimum levels of these metalloids improve plant growth and immunity by various direct and indirect effects. On the other hand, metalloids like arsenic (As) and germanium (Ge) are detrimental for plants even at lower concentrations. The presence of these toxic entities inside cells disrupts cellular homeostasis by affecting the molecular, biochemical and physiological processes. The prospect to increase the uptake of beneficial metalloids and limit the hazardous metalloids and the challenges associated with the structural analogy and common transport mechanism is also discussed. The molecular insights into the biochemical and physiological aspects of metalloid transport and detoxification mechanisms will be helpful to exploit metalloid-derived benefits for crop improvement and accomplish food safety.
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    Silicon supplementation as a promising approach to induce thermotolerance in plants: current understanding and future perspectives
    (Springer Nature Publishing AG, 2023) Bishnoi, Alka; Jangir, Pooja; Shekhawat, Pooja Kanwar; Ram, Hasthi; Soni, Praveen
    In the current situation of climate change, heat is the foremost abiotic stress that is fueling food insecurity by reducing crop production, especially in arid regions around the globe. Therefore, ecofriendly and sustainable solutions are needed to address this challenge. Recent findings have established silicon (Si) as an important stress reliever element in plants which tremendously improves their health under different environmental constraints. Exogenous application of Si via fertigation, foliar spray, or seed priming acts as a booster for the already existing defense machinery of plants to cope with the drastic effects of heat. Si fertigation also improves soil properties including its water holding capacity which indirectly aids to improve plant health. Rhizospheric microorganisms also contribute by increasing the bioavailability of Si in soil. Thus, versatile interactions of Si with soil, plant, and microbes modulate the micro-environment of plants exposed to heat stress which help in mitigating the heat-induced damage to plant growth and fertility. In this review, we focus on the elucidation of the role of Si in heat tolerance at the molecular level. Silicon-derived improvements in various morpho-agronomic, physiological, biochemical, anatomical, and molecular parameters have been discussed in detail. Si-uptake and transport mechanism has been addressed. We have also discussed the knowledge gaps and scope of Si as a biostimulant for future-oriented sustainable agriculture.