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Yadav Ankit,Suhag Archna,Jaiwal Ranjana,Chaudhary Darshna,Jaiwal Pawan K. 한국응용곤충학회 2024 Journal of Asia-Pacific Entomology Vol.27 No.1
DNA transfer between distantly related organisms over the years by means other than reproduction is known as horizontal gene transfer (HGT). Although HGT has played a significant role in the adaptive evolution of pro karyotes, its importance in determining the evolution of eukaryotes, particularly in insect lineages, remains unknown. A thorough examination of high-quality insect genomes has revealed more than the expected number of genes from different donors, bacteria, fungi, viruses, and plants. Most of these transfers have been concen trated in higher numbers in one of the highly destructive hemipteran global insect pests, the whitefly (Bemisia tabaci). Acquisition of genes in whiteflies from different donors has provided several advantages, including synthesizing vital components (biotin, lysine, and pantothenic acid) and a recently identified involvement in detoxifying plant toxins and many other unknowns. This review highlighted recent HGT events in hemipteran insects. We detailed the number and function of the horizontally transferred genes in B. tabaci from different donors and the advantages of such transfers. We also discussed the possibility of using HGT silencing to manage B. tabaci.
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Kapil Malik,Deepshikha Birla,Honey Yadav,Manish Sainger,Darshna Chaudhary,Pawan K. Jaiwal 한국작물학회 2017 Journal of crop science and biotechnology Vol.20 No.3
Various factors affecting in vitro regeneration like different carbon sources, different gelling agents, and growth additives were assessed comprehensively for callus induction and plant regeneration for five Indian wheat cultivars using mature embryos as the explants for the first time. The tissue culture responses of cultivars WH-1105, HD-2967, and PBW-343 have not been reported earlier. Besides, the effect of different concentrations of the cytokinin, zeatin has also been optimized. Using the optimized factors, the efficiency of five different varieties, i.e., HD 2967, C 306, RAJ 3765, WH 1105, and PBW 343 was evaluated for regeneration. Modified MS basal medium containing dicamba reduced precocious germination of the embryo and induced embryogenic callus more efficiently. Removal of embryogenic calli from non-regenerable structures during early callus phase improved plant regeneration. These calli on zeatin (1.0 mgl-1) and dicamba (0.1 mgl-1) containing medium showed the highest regeneration frequency (98%) with a maximum of 8-9 shoots per calli. Maltose had the maximum callusing and regeneration percentage than other carbon sources. Various gelling agents did not have any significant difference on the regeneration. Of all the varieties, C-306 and HD-2967 were found to be more regenerative and can be used in transformation experiments.
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