Responses in Plants under the Pest Infestation

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: closed (20 September 2023) | Viewed by 1904

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Guest Editor
Research Institute CIBIO (Centro Iberoamericano de la Biodiversidad), Scientific Park, University of Alicante, Ctra. San Vicente del Raspeig s/n, E-03690 San Vicente del Raspeig (Alicante), Spain
Interests: plant–insect interactions; plant defense; in vitro culture; polyamines; plant stress; cryopreservation; phytochemistry; fruit ripening; postharvest physiology
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Special Issue Information

Dear Colleagues,

The interplay between plants and insects is probably one of the most challenging and fascinating examples of co-evolution and mutual adaptation. In particular, the interaction between host plants and herbivore insects has been frequently visualized as an example of an arms race in which, after a defense system evolves in plants, an answer is generated in the insects in the form of a countermeasure. Plants display a wide array of defense strategies that may vary according to the type of interaction established with the herbivore. The aim of this Special Issue is thus to collect those results describing this diversity of responses (defense reactions, primary metabolism changes, altered production of volatile compounds, changes in growth rate, etc.), and to compare the type and magnitude of this response as a function of the kind of interaction established with the insect, i.e., mode of feeding (sucking, biting, etc.), oviposition, oral or body secretions, etc. Works applying the new -omics technologies, or any other methodological advance, to this topic are also welcome.

Dr. José Luis Casas
Guest Editor

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Keywords

  • plant defense
  • volatile compound
  • oral secretions
  • secondary metabolism
  • phytochemistry
  • herbivory
  • egg deposition
  • plant–insect

Published Papers (1 paper)

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Research

14 pages, 3647 KiB  
Article
Megalurothrips usitatus Directly Causes the Black-Heads and Black-Tail Symptoms of Cowpea along with the Production of Insect-Resistance Flavonoids
by Yunchuan He, Yang Gao, Hainuo Hong, Jiamei Geng, Qiulin Chen, Ying Zhou and Zengrong Zhu
Plants 2023, 12(22), 3865; https://doi.org/10.3390/plants12223865 - 15 Nov 2023
Viewed by 1695
Abstract
The thrip (Megalurothrips usitatus) damages the flowers and pods of the cowpea, causing “black-heads and black-tails” (BHBT) symptoms and negatively affecting its economic value. However, the mechanism by which BHBT symptoms develop is still unknown. Our results showed that the microstructure [...] Read more.
The thrip (Megalurothrips usitatus) damages the flowers and pods of the cowpea, causing “black-heads and black-tails” (BHBT) symptoms and negatively affecting its economic value. However, the mechanism by which BHBT symptoms develop is still unknown. Our results showed that the microstructure of the pod epidermis was altered and the content of the plant’s resistance-related compounds increased after a thrip infestation. However, the contents of protein and free amino acids did not change significantly, suggesting that the nutritional value was not altered. Pathogens were found not to be involved in the formation of BHBT symptoms, as fungi and pathogenic bacteria were not enriched in damaged pods. Two herbivory-induced flavonoids—7,4′-dihydroxyflavone and coumestrol—were found to exert insecticidal activity. Our study clarified that BHBT symptoms are directly caused by the thrip. Thresholds for pest control need to be reconsidered as thrip herbivory did not degrade cowpea nutrition. Full article
(This article belongs to the Special Issue Responses in Plants under the Pest Infestation)
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