~ 1844 ~ The Pharma Innovation Journal 2021; 10(8): 1844-1850 ISSN (E): 2277- 7695 ISSN (P): 2349-8242 NAAS Rating: 5.23 TPI 2021; 10(8): 1844-1850 © 2021 TPI www.thepharmajournal.com Received: 01-06-2021 Accepted: 06-07-2021 Arpitha Shankar Department of Agriculture Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India Anand Kumar Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, India Corresponding Author: Arpitha Shankar Department of Agriculture Biotechnology, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India In the fight against the tomato leaf curl virus in tomato: Contenders and scenarios Arpitha Shankar and Anand Kumar Abstract Tomato leaf curl disease (TLCD) is the most common viral disease in the tomato plant. It is caused by begomoviruses, which are viruses that cause plant development to be slowed. Many of the traditional disease management methods are still in use. Modern biotechnology is being used to detect illness in tomato plants as early as possible, thus reducing damage to the plants. Through genetic engineering, the spread of viruses may be controlled or prevented entirely. Here we reviewed many methods for decreasing or eliminating the viral influence on crop growth through biotechnology and genomics. We also investigated the possibility of genetic engineering to reduce or remove the virus TLCD impact on tomato crop development. Keywords: Tomato, Begomovirus, leaf curl, strain Introduction Tomatoes are a very significant vegetable crops that have gained immense popularity over the last century and are now grown nearly in every country all over the world [1] . Due to the economic importance of tomato and its role as a model for its fleshy fruit development, secondary metabolism, disease resistance, domestication, and evolution, significant efforts have been made to develop genetic and genomic resources for this species. As a result, tomato was chosen as the model genome for the economically important Solanaceae family (e.g., potato, pepper, and eggplant). The wild cherry tomato (often designated as S. lycopersicum var. cerasiforme) is the most likely progenitor of cultivated tomatoes, due to its greater distribution and possibly more recent dispersal into Mexico, Colombia and Bolivia [2] . Wild tomato cousins are indigenous to western South America, ranging from central Ecuador to northern Chile and the Galápagos Islands, along the coast and in the high Andes. Without a doubt, the Andean topography, the diversity of biological niches, and the range of temperatures all contributed to the diversity of wild tomato species [3] . Mineral synthesis in tomatoes is reliant upon amount and kind of mineral involved from development media and soil. Inadequate amounts of supplements availability show insufficiency indications and influence the creation and nature of tomato [4] . Sugars, dietary filaments, carotenoids what's more, cell reinforcement shade named lycopene gives the red shading to tomatoes are available, which helps in the concealment of cancer-causing substances and considered valuable for the sound health of individuals [5] . Shading is vital to pass judgment on the nature of the product quality, and the red shade of tomato is a direct result of the creation of a cell reinforcement compound named lycopene.Cell reinforcement movement and the absolute number of carotenes in tomatoes are reliant upon age and assortment [6] . Tomato plants are susceptible to a variety of viral infections, the most severe of which is tomato leaf curl virus. In India, tomato production is severely constrained by the disease tomato leaf curl virus, which occurs on a regular basis (ToLCVD). [7] Numerous tomato leaf curl virus (ToLCV) isolates cause ToLCVD, the most severe strain being the tomato leaf curl new Delhi virus in north India [8] . In India, the tomato leaf curl viral disease has had a significant negative impact on tomato agriculture and output [9, 10, 7] . The high frequency of tomato leaf curl viral disease has a severe impact on tomato agriculture, particularly in the fall in north India and throughout the summer season in south India, with losses frequently exceeding 90%. [11] . When plants are infected within the first 20 days of sowing, their growth is significantly slowed and they produce a small number of leaves and fruits, resulting in up to 92.3 percent loss [11] . Temperature appears to influence virus transmission, with an optimal range of 33–39 °C.