Browsing by Author "Rekha Sodani"

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Beneficial elements: New Players in improving nutrient use efficiency and abiotic stress tolerance
(Springer Science and Business Media B.V., 2023) Rajesh Kumar Singhal; Shah Fahad; Pawan Kumar; Prince Choyal; Talha Javed; Dinesh Jinger; Prabha Singh; Debanjana Saha; Prathibha Md; Bandana Bose; H. Akash; N.K. Gupta; Rekha Sodani; Devanshu Dev; Dalpat Lal Suthar; Ke Liu; Matthew Tom Harrison; Shah Saud; Adnan Noor Shah; Taufiq Nawaz
Plant requires seventeen essential mineral elements for proper growth and functioning classified as macro and micro-nutrients. Apart from these, cerium (Ce), cobalt (Co), iodine (I), aluminum (Al), selenium (Se), sodium (Na), lanthanum (La), silicon (Si), titanium (Ti), and vanadium (V) are evolving as pivotal bio-stimulants in plant growth and providing stress tolerance. Although, they are not mandatory for all plants directly but when they are supplemented, promote the plant growth positively and simulate multiple abiotic and biotic stresses tolerance. Though, these elements have crucial role in plant growth, still obscurethe uptake, transport and molecular understanding as much of macro and micronutrients. However, in recent years scientists are giving more emphasis to explore their mechanisms associated with enhancing antioxidant defense, stress responsive proteins accumulation, and transcription factors under variety of stresses. Likely, they are also crosstalk with other essential elements and plant growth regulators (PGRs) (salicylic acid, SA; jasmonic acid, JA), which is crucial for signaling network perception and regulate plant growth. Recent technologies developed in the field of nanotechnology assist in the further understanding of their uptake, transport and functions at cellular level andoptimizing their concentrations for better plant growth. Bio-fortification of crops with beneficial elements provides some cues regarding their importance in plant growth and also in human balance nutrition. To considering the importance of these compound, this review aimed to explore the uptake and transport mechanisms of beneficial elements and their function in plant development. Consequently, we pinpoint the crosstalk’s between PGRs and other mineral elements, which advance their crucial role during plant mineral nutrition and growth signaling. At the end, this review focused on the crucial role and mechanisms associated with these elements under multiple abiotic stresses that open exciting avanues in several directions related to crop stress breeding program. © 2022, The Author(s), under exclusive licence to Springer Nature B.V.
Germination and morphological responses of Triticum aestivum L. to different concentrations of fluoride
(Action for Sustainable Efficacious development and Awareness, 2021) Rekha Sodani; Vijai Pandurangam; J.P. Srivastava
A laboratory experiment was conducted on germination papers to study the effect of fluoride (F) at 0 (T1), 50 (T2), 100 (T3), 200 (T4), 250 (T5) and 300 (T6) ppm on germination and morphological parameters in wheat (Triticum aestivum L.) variety, HUW-234 at 2, 4 and 6 days after initiation of germination process. Fluoride toxicity caused reduction in germination per cent, germination index, coefficient of velocity of germination and germination energy (%) while mean germination time increased with fluoride concentration. Root and shoot lengths and dry matters decreased with increased concentrations of fluoride. Ratio of root: shoot weight increased with increased concentration of fluoride. Elongation of seminal roots was adversely affected by increased fluoride level. Increased fluoride level in the germination medium decreased RGR of seedlings progressively. Present study revealed that enhanced fluoride concentration in germination medium caused reduction in germination and germination related parameters. © ASEA.
Physiological, biochemical, and molecular mechanisms of gasotransmitter-mediated heavy metal stress tolerance in plants
(CRC Press, 2021) Vivek Kumar; Akash Hidangmayum; Ankita Singh; Rekha Sodani; Basant Kumar Dadrwal; Navneet Kumar; Surendra Kumar Chaudhary; Brijesh Kumar Chaudhary; S.P. Kushwaha; Jyoti Chauhan; Hirdayesh Anuragi; Udit Nandan Mishra; Devidutta Lenka; Rajesh Kumar Singhal
[No abstract available]
Rapid Prediction of Soil Electrical Conductivity in the Middle Indo-Gangetic Plains of India
(Indian journals, 2025) Seema; Amlan Kumar Ghosh; Preeti Lata Singh; Rekha Sodani; Shalini Sharma; Satya Narayana Pradhan; Biswabara Sahu
Salts in the root zone have high spatial variability, change rapidly and adversely affect soil quality and crop productivity. In contrast to the time-intensive traditional methods for measuring electrical conductivity (EC), visible-near infrared (Vis-NIR) and mid-infrared (MIR) spectroscopy provide faster alternatives that can assist in creating strategies to reduce negative impacts on soil and plants. Soils were collected from the Indo-Gangetic Plains and analysed for EC1:2.5 using conventional method. There was a wide variation in EC measured by the conventional method. So Partial Least Squares Regression (PLSR) was used to predict soil EC from spectral data, with the data divided into calibration (70%) and validation (30%) datasets. The partial least square regression (PLSR), random forest (RF), support vector regression (SVR) and multivariate adaptive regression splines (MARS) both in Vis-NIR and MIR region during calibration. The predictive performance of PLSR, RF, SVR, and MARS models for EC1:2.5 in the Vis-NIR range showed PLSR as the best model (R² = 0.84, RMSE = 0.21, RPD = 2.44). In the MIR range, RF was considered fairly good (R² = 0.52, RMSE = 0.20, RPD = 1.43). Vis-NIR spectroscopy with PLSR algorithm predicted EC better than MIR spectroscopy and would be the method of choice for rapid estimation and prediction of EC in the study region. © 2025, Indian journals. All rights reserved.