Publications by authors named "Rahul K Tiwari"

Background: High resistant starch (RS) rice with a low glycemic index (GI) is digested more slowly, resulting in a slow increase in the postprandial blood glucose level. People with milled rice as a staple diet, and with sedentary lifestyles, are more prone to acquire type 2 diabetes in the long term. With an increasing population of diabetics worldwide, one possible solution is the development of rice-based, low-GI foods with high RS content rice.

View Article and Find Full Text PDF

The potato, being an underground vegetable crop, faces consistent threats from soil- and tuber-borne fungal and bacterial pathogens. Black scurf and stem canker disease caused by the fungal pathogen Kuhn is a critical global concern in the potato cultivation system. In this study, we evaluated the disease mitigation potential of five systemic acquired resistance-inducing chemicals , salicylic acid, jasmonic acid, -aminobutyric acid, -aminobutyric acid and hydrogen peroxide (HO).

View Article and Find Full Text PDF
Article Synopsis
  • Tomato is the second most important vegetable crop worldwide and is being threatened by a new viral disease causing notable shoestring symptoms on leaves and poor fruit quality.
  • A study confirmed that the tomato mottle mosaic virus (ToMMV) is responsible for this disease, as it produced the same symptoms when tested on tomato plants.
  • The virus can infect various related plants but does not affect cucurbits, and it can be transmitted through seeds, highlighting the need for better diagnostic tools and management strategies to protect tomato cultivation in India.
View Article and Find Full Text PDF

The worldwide consumption, health-promoting and nutritional properties of mushrooms have been extensively researched over a decade. Although, wide range of edible mushrooms is still unexplored, which can be a valuable source of bioactive compounds in dietary supplements and biopharma industry. Mushrooms represent as dynamic source of nutrients lacking in food from plant or animal origin thus, considered as vital functional food utilized for prevention of numerous diseases.

View Article and Find Full Text PDF

Stem rot of groundnut ( L.) caused by is the main threat to groundnut production, causing significant economic losses. The present study aims to provide an overview of the potentiality of (Tv), (Th), (Pf), and (Bs), applied either individually or in mixed combination, against (isolate SrBKN).

View Article and Find Full Text PDF

The positive health benefits of colored staples have led to a significant increase in interest in them as healthy food ingredients. Numerous in vitro and in vivo studies have demonstrated that colored cereals are rich in antioxidants, carotenoids, and xanthophylls, which are widely used as natural additives in the food industry. Additionally, shifts in consumer preferences have led to a preference for nutritionally balanced diets over traditional high-energy ones.

View Article and Find Full Text PDF
Article Synopsis
  • India has over 1000 mango genotypes, with certain elite varieties from the Himalayan plains expected to have high postharvest value, yet comprehensive studies on them are limited.
  • The study evaluated 15 lesser-known mango genotypes for various postharvest factors such as ripening behavior, nutritional attributes, and biochemical contents, revealing noteworthy results like high flavonoid and ascorbic acid levels in the 'Sukul' variety.
  • Findings indicated that some genotypes showed a longer shelf life and diverse nutritional profiles, suggesting implications for quality improvement in mango research and the processing industry.
View Article and Find Full Text PDF

Mango is a commercial fruit crop of India that suffers huge postharvest losses every year. The application of biocontrol agents (BCAs) bears a vast potential for managing the same, which is yet to be exploited to its fullest extent. Hence, studies were conducted for BCAs application of , and strains on mango fruit under , conditions to know the efficacy of these BCAs on the postharvest pathogen, shelf life and quality retention of mango fruit.

View Article and Find Full Text PDF
Article Synopsis
  • Soil salinity is a major abiotic stress affecting potato production, while wilt disease, caused by a specific pathogen, is a significant biotic stress.
  • The experiment revealed that high salt concentrations hindered root and shoot growth of potato plants (variety "Kufri Jyoti") but accelerated the growth and sporulation of the pathogen in a saline environment.
  • Plants under combined stress from salinity and the wilt pathogen showed higher mortality rates, severe wilting, decreased chlorophyll, and changes in enzymatic activities, indicating that these combined stresses exacerbate potato diseases in saline soils.
View Article and Find Full Text PDF

Vegetative propagation of potatoes makes it possible for potato viruses to be transmitted through tubers. Potato virus A (PVA) is one of these viruses, which belongs to the genus in the family. Potato tuber yield can be reduced by 30-40% by PVA alone.

View Article and Find Full Text PDF

The almond, a commercially important tree nut crop worldwide, is native to the Mediterranean region. Stone fruit trees are affected by at least 14 ' Phytoplasma' species globally, among which ' Phytoplasma asteris' is one of the most widespread phytoplasma infecting , causing aster yellows disease. Recently, almond plantations of Nauni region were consistently affected by phytoplasma, as evidenced by visible symptoms, fluorescent microscopic studies and molecular characterization.

View Article and Find Full Text PDF

Twenty mango genotypes grown in the plains of the Himalayas were characterized by their physical, physiological, biochemical, mineral and organoleptic attributes: fruit firmness, weight, peel thickness, shape, dry seed weight, respiration rate, weight loss, and shelf life. Biochemical attributes such as soluble solids, total carotenoids, total phenolic content, antioxidant activity, titratable acidity, ascorbic acid and total sugars were also determined. In addition, mineral content and fruit-softening enzymes were measured, and an organoleptic evaluation was performed.

View Article and Find Full Text PDF

has a well-established negative impact on rice yield in transplanted and direct-seeded rice, resulting in yield losses of up to 20 to 90 percent. Studies were undertaken to isolate potential native strains of bio-control agents to manage the devastating Rice Root Knot Nematode (). Eighteen bacterial strains and eleven fungal strains were isolated from the rhizosphere of crops like rice, okra, ash gourd, chili, beans and cucumber, enveloping diverse soil types from the Upper Brahmaputra Valley region of Assam.

View Article and Find Full Text PDF

The potato apical leaf curl disease is caused by tomato leaf curl New Delhi virus-potato (ToLCNDV-potato), which severely alters a plant's starch metabolism, starch hydrolysing enzymes, and antioxidant mechanism. In this study, the result suggested that ToLCNDV-potato significantly ( < 0.01) affected the morphological parameters and photosynthetic pigment system in both the cultivars of potato, viz.

View Article and Find Full Text PDF

Potatoes in India are very susceptible to apical leaf curl disease, which causes severe symptoms and greater yield losses. Because the majority of potato cultivars are susceptible to the virus, it is crucial to discover sources of resistance and investigate the mechanism of resistance/susceptibility in potato cultivars. In this study, the gene expression profile of two potato cultivars, Kufri Bahar (resistant) and Kufri Pukhraj (susceptible), varying in their level of resistance to ToLCNDV, was analyzed using RNA-Seq.

View Article and Find Full Text PDF

Chickpea ( L.) is an important pulse crop around the globe and a valuable source of protein in the human diet. However, it is highly susceptible to various plant pathogens such as fungi, bacteria, and viruses, which can cause significant damage from the seedling phase until harvest, leading to reduced yields and affecting its production.

View Article and Find Full Text PDF

Introduction: The discovery of RT-PCR-based pathogen detection and gene expression analysis has had a transformative impact on the field of plant protection. This study aims to analyze the global research conducted between 2001 and 2021, focusing on the utilization of RT-PCR techniques for diagnostic assays and gene expression level studies. By retrieving data from the 'Dimensions' database and employing bibliometric visualization software, this analysis provides insights into the major publishing journals, institutions involved, leading journals, influential authors, most cited articles, and common keywords.

View Article and Find Full Text PDF

Introduction: Cotton ( L.) is one of the most important staple fibrous crops cultivated in India and globally. However, its production and quality are greatly hampered by cotton leaf curl disease (CLCuD) caused by cotton leaf curl virus (CLCuV).

View Article and Find Full Text PDF

The increasing health awareness of consumers has made a shift towards vegan and non-dairy prebiotics counterparts. Non-dairy prebiotics when fortified with vegan products have interesting properties and widely found its applications in food industry. The chief vegan products that have prebiotics added include water-soluble plant-based extracts (fermented beverages, frozen desserts), cereals (bread, cookies), and fruits (juices & jelly, ready to eat fruits).

View Article and Find Full Text PDF