Publications by authors named "Mayank Rai"

Faba bean is a nutritionally and medicinally rich popular legume crop. However, vicine-convicine remain as potential threats for "favism" in human beings. In this study, 189 diverse faba bean accessions have been evaluated for yield component traits and vicine content in seeds followed by a correlation study.

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The cultivation of nearly 10,000 indigenous rice landraces in the North-Eastern Hill (NEH) region by various ethnic groups creates opportunities for the utilization of unique landraces through systematic evaluation of genetic variability. In the present study, a set of 102 rice landraces were assessed based on morphological and SSR markers, and five checks in augmented design vis-à-vis high-yielding rice genotypes with stable performance were identified. The presence of high estimates of heritability, genotypic coefficient of variation, and genetic advance over mean indicated the predominance of additive gene action, which necessitated the effectiveness of selection in augmenting productivity.

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Article Synopsis
  • - Rice struggles in acidic soils due to nutrient deficiencies and metal toxicities, prompting a study to identify genotypes that perform well in low phosphorus conditions.
  • - Researchers evaluated 234 rice genotypes over two seasons and found 46 low-phosphorus tolerant lines, with specific accessions showing better yields than standard checks.
  • - A genome-wide association study uncovered 10 quantitative trait nucleotides related to yield and phosphorus utilization efficiency, along with 34 candidate genes that could guide future rice breeding efforts.
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Background: In ayurveda, sciatica can be correlated to ' under (neurological disorders caused by , one of the bodily humour). In this mainly bodily humours and are vitiating producing symptoms like piercing pain, stiffness, twitching, numbness and pain radiating from lumbosacral region to lower limb up to the foot. Therapeutic plan includes stabilizing and bringing back the vitiated vata and kapha humours to equilibrium.

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Rice blast is one of the most devastating biotic stresses that limits rice productivity. The North Eastern Hill (NEH) region of India is considered to be one of the primary centres of diversity for both rice and pathotypes of . Therefore, the present study was carried out to elucidate the genetic basis of leaf and neck blast resistance under Meghalaya conditions.

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Background: Generalized anxiety disorder (GAD) is one among many types of mental disorders explained in Ayurveda. It can be defined as a (mind) + (anxiety)= - Anxious status of a mind. also known as stimulates and improves the digestive fire and metabolism at a cellular level ( It can be correlated to GAD.

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Unlabelled: Water deficit is a crucial factor causing huge loss to rice productivity. The present study aimed to develop a multiple stress tolerant genotype by pyramiding drought tolerant yield QTLs qDTY and qDTY into high yielding rice variety Samba Mahsuri Sub-1(SMS) through marker assisted pyramiding. To achieve this six introgression lines of SMS carrying qDTY (SAB) were crossed with DRR-50, an Essentially Derived Variety of SMS carrying qDTY.

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Pigmentation in rice grains is an important quality parameter. Purple-coloured rice (Oryza sativa L.) indicates the presence of high anthocyanin with benefits of antioxidant properties.

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Purpose: The aim of this study was to assess the efficacy of Ahmed glaucoma valve (AGV) in eyes with Descemet's stripping endothelial keratoplasty (DSEK) and glaucoma and evaluate the risk factors for failure.

Methods: Retrospective interventional study included 27 eyes (27 subjects) that underwent AGV implantation following DSEK. The main outcome measure was AGV success, defined as IOP between 6 and 21 mmHg with or without topical antiglaucoma medications (AGMs).

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Article Synopsis
  • * The vibrant colors in grains are due to the presence of secondary metabolites like carotenoids and flavonoids, regulated by various proteins and enzymes, especially MYB and bHLH gene family members.
  • * This review covers the complex anthocyanin biosynthesis pathway in cereals, discussing the genes involved and the limited functional markers available for breeding programs aimed at improving nutritional quality.
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Purpose: This study aimed to assess the efficacy and safety of Ahmed glaucoma valve (AGV) (New World Medical Inc.) implantation in eyes with pediatric keratoplasty and glaucoma.

Design: Retrospective, noncomparative, interventional case series.

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Phosphorus (P) deficiency is one of the major limiting factors for rice productivity with only one locus (PSTOL1) available for field based application. A biparental mapping population (F) derived from two P deficiency tolerant genotypes (Sahbhagi Dhan (SD) (PSTOL1) and Chakhao Poreiton (CP) (PSTOL1)), in which, transcriptome data generated from our lab had previously shown existence of diverse mechanisms was used to identify novel regions for better yield under lowland acidic soils. Phenotyping at F, F and F generations revealed significant correlation between traits like tiller number at 30 days (TN 30), tiller number at 60 days (TN 60), filled grains (FG), percent spikelet fertility (SF%), panicle number (PN) and grain yield per panicle (GYPP) and also association with better yield/performance under low P acidic soil conditions.

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Aluminium (Al) toxicity is the single most important contributing factor constraining crop productivity in acidic soils. Hydroponics based screening of three rice genotypes, a tolerant (ARR09, AR), a susceptible (IR 1552, IR) and an acid soil adapted landrace (Theruvii, TH) revealed that AR accumulates less Al and shows minimum decrease in shoot and root biomass under Al toxicity conditions when compared with IR. Transcriptome data generated on roots (grown in presence or absence of Al) led to identification of ~1500 transcripts per genotype with percentage annotation ranging from 21.

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The availability of phosphorus (P) affects productivity of rice. Under acidic soil conditions (pH < 5.5), P is rapidly immobilized in the soil.

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Light intensity is a crucial environmental factor that affects photosynthesis and ultimately, grain yield in rice. However, no gene or marker directly associated with improved performance under low-light intensity under field conditions has been identified till date. With an aim of identifying genes and markers associated with improved performance (measured in terms of better yields) under low-light intensity, an integrated field screening, in silico and wet lab validation analysis was performed.

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Phosphorus deficiency adversely affects crop productivity. The mechanism of tolerance in plants is not well understood. The current study successfully annotated a set of highly significant (Log RPKM ≥3) nine novel sequences up-regulated in P deficient condition identified from a low P tolerant rice genotype.

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Plants experience low phosphorus (P) and high iron (Fe) levels in acidic lowland soils that lead to reduced crop productivity. A better understanding of the relationship between these two stresses at molecular and physiological level will lead to development of suitable strategies to increase crop productivity in such poor soils. Tolerance for most abiotic stresses including P deficiency and Fe toxicity is a quantitative trait in rice.

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Low phosphorus (P) tolerance in rice is a biologically and agronomically important character. Low P tolerant Indica-type rice genotypes, Sahbhagi Dhan (SD) and Chakhao Poreiton (CP), are adapted to acidic soils and show variable response to low P levels. Using RNAseq approach, transcriptome data was generated from roots of SD and CP after 15 days of low P treatment to understand differences and similarities at molecular level.

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Low temperature (LT) severely affects rice growth and grain yield. Recently, we reported contrasting genotypes including ARR 09 and Takyer for seedling stage long duration low temperature response. Here we show that susceptible rice genotypes show an increase in lipid peroxide levels and decrease in relative water content (RWC) to a higher extent in comparison to tolerant genotypes in response to 3 h LT.

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Importance of magnetic nanoparticles in daily life including biomedical applications in near future cannot be overlooked. This review focuses on the properties of magnetic nanoparticles (MNPs), various approaches for their synthesis, and their biomedical applications. First part of this review focuses on the classes, physical properties, and characteristics of MNPs.

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Low temperature stress is one of the major limiting factors affecting rice productivity in higher altitudes. DREB1A and DREB1B, are two transcription factors that have been reported to play key regulatory role in low temperature tolerance. In order to understand whether natural genetic variation in these two loci leads to cold tolerance or susceptibility, OsDREB1A and OsDREB1B were targeted across several rice genotypes showing differential response to low temperature.

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