Evaluation of reduviid predators and plant products against chosen groundnut pests

Sahayaraj, K.; Ravi, C. S.

doi:10.1080/03235400600586716

Cited by 23 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, biological control potential of A. pedestris on H. armigera was recorded in lady's finger orchards (Sahayaraj and Ravi 2007). Recent studies by revealed that R. marginatus could be used as augmented biological control agent for groundnut.…”

Section: Augmentative Biological Controlmentioning

confidence: 97%

Reduviids and Their Merits in Biological Control

Sahayaraj

2014

Basic and Applied Aspects of Biopesticides

Self Cite

View full text Add to dashboard Cite

Reduviids are the largest group of pest-specific, efficient hemipteran predators of economically important insect pests worldwide. They are found in the agroecosystems, semi-arid zones, scrub jungles and tropical rain forests. Reduviid predators have been distributed in various crops like soybean, groundnut, pigeon pea, cotton, castor, rice, cabbage, tobacco, pumpkin, bhindi, citrus, sugar cane, sesbania and apple and in secondary and tropical evergreen forests in many parts of the world. In natural and plantation forests, reduviids are living at various heights on vegetation but also in bird nests, caves and spider webs. Their success in every ecosystem/ trophic niche is due to their morphological and physiological adaptations related to the predation. Reduviids are efficient predators on insect pests of crops, playing a significant role in keeping pest populations in check. Some important biological control agents are Platymeris laevicollis Distant, Zelus renardii Kolenati, Rhynocoris marginatus (Fab.), Rhynocoris kumarii Ambrose and Livingstone, Rhynocoris fuscipes (Fab.), Pristhesancus plagipennis Walker, Blaptostethus pallescens Poppius, Acanthaspis pedestris (Stål), Catamiarus brevipennis (Serville), Ectomocoris tibialis (Distant), etc.Even though reduviids are polyphagous predators, many have prey specialisations. Its biological control potential has been evaluated on crops like cotton, soybean, groundnut, bhindi and coconut in field and laboratory experiments and is being commonly used in biological control programmes. Distribution pattern, morphological characters, prey specificity and biological control potential under laboratory, field cage and natural field conditions have been discussed in elaborate manner.

show abstract

Section: Augmentative Biological Controlmentioning

confidence: 97%

Reduviids and Their Merits in Biological Control

Sahayaraj

2014

Basic and Applied Aspects of Biopesticides

Self Cite

View full text Add to dashboard Cite

show abstract

“…Despite the natural abundance of assassin bugs and their importance as predators of invertebrates in agricultural and other ecosystems (31)(32)(33), the detailed composition of assassin bug venom remains unknown. Here, we elucidate the protein composition of venom from the harpactorine assassin bug Pristhesancus plagipennis using a combined transcriptomic/proteomic approach.…”

mentioning

confidence: 99%

Melt With This Kiss: Paralyzing and Liquefying Venom of The Assassin Bug Pristhesancus plagipennis (Hemiptera: Reduviidae)

Walker

Madio

Jin

et al. 2017

Molecular & Cellular Proteomics

View full text Add to dashboard Cite

Assassin bugs (Hemiptera: Heteroptera: Reduviidae) are venomous insects, most of which prey on invertebrates. Assassin bug venom has features in common with venoms from other animals, such as paralyzing and lethal activity when injected, and a molecular composition that includes disulfide-rich peptide neurotoxins. Uniquely, this venom also has strong liquefying activity that has been hypothesized to facilitate feeding through the narrow channel of the proboscis-a structure inherited from sapand phloem-feeding phytophagous hemipterans and adapted during the evolution of Heteroptera into a fang and feeding structure. However, further understanding of the function of assassin bug venom is impeded by the lack of proteomic studies detailing its molecular composition.By using a combined transcriptomic/proteomic approach, we show that the venom proteome of the harpactorine assassin bug Pristhesancus plagipennis includes a complex suite of >100 proteins comprising disulfide-rich peptides, CUB domain proteins, cystatins, putative cytolytic toxins, triabin-like protein, odorant-binding protein, S1 proteases, catabolic enzymes, putative nutrient-binding proteins, plus eight families of proteins without homology to characterized proteins. S1 proteases, CUB domain proteins, putative cytolytic toxins, and other novel proteins in the 10 -16-kDa mass range, were the most abundant venom components. Thus, in addition to putative neurotoxins, assassin bug venom includes a high proportion of enzymatic and cytolytic venom components likely to be well suited to tissue liquefaction. Our results also provide insight into the trophic switch to blood-feeding by the kissing bugs (Reduviidae: Triatominae). Although some protein families such as triabins occur in the venoms of both predaceous and blood-feeding reduviids, the composition of venoms produced by these two groups is revealed to differ markedly. These results provide insights into the venom evolution in the insect suborder Heteroptera. Venoms are chemical arsenals injected by one animal into another to disrupt the homeostasis of the injected animal in ways that assist predation, defense, or feeding by the injecting animal (1). Typically, venoms are composed of multiple toxins, including peptides, enzymes, and small molecules, such as polyamines, that bind to and affect the function of multiple molecular targets in the injected animal. Because of their key role governing life-or-death interactions between animals, venom toxins are subject to selection pressures that have resulted in unique evolutionary patterns such as massive duplication and accelerated evolution of toxin-encoding genes (2-5). In addition, the properties that ensure that toxins confer a fitness advantage to the animals that produce them, including high stability and potency, make them well suited for use as insecticides, therapeutics, and pharmacological tools (6 -11). However, our understanding of the factors shaping venom evolution, and our ability to repurpose venom toxins for biotechnological use, is limited ...

show abstract

“…In other similar studies, field releases of P. plagipennis and R. marginatus were successful in reducing S . litura, H. armigera and A. craccivora populations in cotton and groundnut fields . However, there are no reports available concerning the utilization of an augmentative release of R. fuscipes for cotton pest management.…”

Section: Discussionmentioning

confidence: 99%