Browsing by Author "Tushar Goyal"

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Experiment tools used as a biostimulant for sustainable crop plants improvement and practices
(CRC Press, 2025) Tushar Goyal; Deepak Kumar; Anand Kumar Gaurav; Arpan Mukherjee; Gowardhan Kumar Chouhan; Jay Prakash Prakash Verma
A variety of methods are employed experimentally as biostimulants to improve the quality, production, and growth of crops. Biostimulants are chemicals or microorganisms that, when ingested by plants, stimulate their physiological functions in a way that increases nutrient absorption, increases stress tolerance, and fosters development. Physical, chemical, and biological substances such as plant growth regulators, humic substances, amino acids, seaweed extracts, advantageous bacteria (plant growth-promoting rhizobacteria), silicon, and nanomaterials-based biostimulants are utilized as experimental biostimulants. These experimental approaches have been found to boost nutrient absorption and water usage effectiveness, and increase plant tolerance to various environmental stresses and photosynthesis, which in turn increases plant growth, yield, and quality. A promising strategy for sustainable agriculture is the application of these experimental instruments as biostimulants, which can lower the applications of agro-chemical fertilizers, herbicides and water while increasing crop yield and resistance to biotic and abiotic challenges. To completely comprehend the processes by which these experimental instruments act as biostimulants and to optimize their application in various crops and environmental situations, more study is still required. © 2025 Taylor & Francis Group, LLC. All rights reserved.
Impact of bacterial volatiles on the plant growth attributes and defense mechanism of rice seedling
(Elsevier Ltd, 2024) Tushar Goyal; Arpan Mukherjee; Gowardhan Kumar Chouhan; Anand Kumar Gaurav; Deepak Kumar; Saman Abeysinghe; Jay Prakash Verma
Rice is a major dietary element for about two billion people worldwide and it faces numerous biotic and abiotic stress for its cultivation. Rice blast disease caused by Magnaporthe oryzae reduce up to 30 % rice yield. Overuse of synthetic chemicals raises concerns about health and environment; so, there is an urgent need to explore innovative sustainable strategies for crop productivity. The main aim of this study is to explore the impact of bacterial volatiles (BVCs) on seedling growth and defense mechanisms of rice under in-vitro condition. On the basis of plant growth promoting properties, six bacterial strains were selected out of ninety-one isolated strains for this study; Pantoea dispersa BHUJPVR01, Enterobacter cloacae BHUJPVR02, Enterobacter sp. BHUJPVR12, Priestia aryabhattai BHUJPVR13, Pseudomonas sp. BHUJPVWRO5 and Staphylococcus sp. BHUJPVWLE7. Through the emission of bacterial volatiles compounds (BVCs), Enterobacter sp., P. dispersa and P. aryabhattai significantly reduces the growth of rice blast fungus Magnaporthe oryzae by 69.20 %, 66.15 % and 62.31 % respectively. Treatment of rice seedlings with BVCs exhibited significant enhancement in defence enzyme levels, including guaiacol peroxidase, polyphenol oxidase, total polyphenols, and total flavonoids by a maximum of up to 24 %, 48 %, 116 % and 80 %, respectively. Furthermore, BVCs effectively promote shoot height, root height, and root counts of rice. All BVCs treated plant showed a significant increase in shoot height. P. dispersa treated plants showed the highest increase of 60 % shoot and 110 % root length, respectively. Root counts increased up to 30% in plants treated with E. cloacae and Staphylococcus sp. The BVCs can be used as a sustainable approach for enhancing plant growth attributes, productivity and defence mechanism of rice plant under biotic and abiotic stresses. © 2024
Synchronous occurrence of adenocarcinoma of the rectum with squamous cell carcinoma of a retrorectal cyst: Report of a case and review of the literature
(BMJ Publishing Group, 2009) Umakant Gaud; Tushar Goyal; Mridula Shukla; Vinay Kumar; Manoj Pandey
Retrorectal cysts are rare congenital anomalies which are more common in females. Rarely, malignant transformation can occur in these cysts. We report here the case of a middle-aged man who had synchronous presentation of adenocarcinoma of the rectum and squamous cell carcinoma in a retrorectal cyst. The patient presented with rectal bleeding and constipation, and underwent abdominoperineal resection and complete excision of the cyst. Postoperative histopathological examination showed adenocarcinoma of the rectum and squamous cell carcinoma of the cyst. The patient received adjuvant chemotherapy and after 18 months of follow-up is free of any local or metastatic disease. Synchronous occurrence of rectal cancer with carcinoma in a retrorectal cyst has not been previously reported in the literature in English.