Publications by authors named "Karthik Kesiraju"

This study demonstrates the combinatorial management of multiple pests through a trans-acting siRNA (tasiRNA)-based micro RNA-induced gene silencing (MIGS) strategy. Transgenic cotton events demonstrated improved efficacy against cotton leaf curl disease, cotton leaf hopper and root-knot nematode. Cotton (Gossypium hirsutum L.

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Mango ( L.) is one of the most popular tropical fruits in the world owing to its rich taste, flavor, color, production volume and diverse end usage. Conventional mango breeding practices are unable to withstand the demand for improved varieties as it is time consuming and requires heavy investment.

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Article Synopsis
  • Climate change has increased the prevalence of pests and pathogens affecting plants, necessitating better management strategies.
  • Reactive oxygen species (ROS) play a crucial role in how plants respond to stress, and maintaining a balanced level of ROS can enhance their resilience against biotic challenges.
  • The review highlights the distinct signaling pathways involved in ROS production when plants confront different stresses, such as herbivory and pathogen infections, suggesting that understanding this can help develop effective stress management strategies in the future.
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Unlabelled: Insect pests are one of the major biotic stresses limiting yield in commercially important crops. The lepidopteran polyphagous spotted pod borer, causes significant economic losses in legumes including pigeonpea. RNA interference (RNAi)-based gene silencing has emerged as one of the potential biotechnological tools for crop improvement.

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Cotton is a commercial crop of global importance. The major threat challenging the productivity in cotton has been the lepidopteron insect pest or cotton bollworm which voraciously feeds on various plant parts. Biotechnological interventions to manage this herbivore have been a universally inevitable option.

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Background: Occurrence of multiple biotic stresses on crop plants result in drastic yield losses which may have severe impact on the food security. It is a challenge to design strategies for simultaneous management of these multiple stresses. Hence, establishment of innovative approaches that aid in their management is critical.

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Efficient regeneration of explants devoid of intrinsic somaclonal variations is a cardinal step in plant tissue culture, thus, a vital component of transgenic technology. However, recalcitrance of economically important crops to tissue culture-based organogenesis ensues a setback in the use of transgenesis in the genetic engineering of crop plants. The present study developed an optimized, genotype-independent, nonconventional tissue culture-independent strategy for the genetic transformation of flax/linseed.

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Background: Pigeonpea, Cajanus cajan is one of the economically important legume food crops and a major source of dietary proteins. Management of pod borer, Helicoverpa armigera has been prominent among crop improvement programs. Lack of resistance sources in the cultivated germplasm and crossing incompatibility with pod borer-resistant wild relatives have prompted biotechnological interventions.

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Cotton ( L.), a mercantile crop plant, is grown worldwide for fiber and seed oil. As with other economically important crops, cotton is bogged down with many biotic and abiotic stress factors.

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Plants are challenged incessantly by several biotic and abiotic stresses during their entire growth period. As with other biotic stress factors, insect pests have also posed serious concerns related to yield losses due to which agricultural productivity is at stake. In plants, trait modification for crop improvement was initiated with breeding approaches followed by genetic engineering.

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Weeds burden plant growth as they compete for space, sunlight, and soil nutrients leading to 25-80% yield losses. Glyphosate [-(phosphonomethyl)glycine] is a widely used broad spectrum non-selective herbicide that controls weeds by inhibiting 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) enzyme and interfering with the shikimate biosynthesis pathway. Cotton ( L.

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Background: Pigeonpea is a source of quality proteins and the main constituent of a well-balanced diet for majority of Indian population. One of the major constraints in the production of pigeonpea is a polyphagous insect pest, Helicoverpa armigera. Non-availability of resistant sources in the germplasm and limitations in conventional breeding have been key factors for continued yield losses.

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insecticidal proteins ( ICPs) are reliable and valuable options for pest management in crops. Protein engineering of ICPs is a competitive alternative for resistance management in insects. The primary focus of the study was to reiterate the translational utility of a protein-engineered chimeric Cry toxin, Cry1AcF, for its broad spectrum insecticidal efficacy using molecular modeling and docking studies.

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