Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous AbstractRice defense responses are induced upon leaf rolling by an insect herbivore    Next AbstractStructure of peptide sex pheromone receptor PrgX and PrgX/pheromone complexes and regulation of conjugation in Enterococcus faecalis »

Sci Total Environ


Title:Volatiles and hormones mediated root-knot nematode induced wheat defense response to foliar herbivore aphid
Author(s):Shi JH; Liu H; Pham TC; Hu XJ; Liu L; Wang C; Foba CN; Wang SB; Wang MQ;
Address:"College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China. Electronic address: mqwang@mail.hzau.edu.cn"
Journal Title:Sci Total Environ
Year:2022
Volume:20220105
Issue:
Page Number:152840 -
DOI: 10.1016/j.scitotenv.2021.152840
ISSN/ISBN:1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:"Plant root-leaf communication signals are critical for plant defense. Numerous studies show that belowground organisms can alter systemically resistance traits in aboveground parts against herbivores. However, there are limited studies on root-knot nematode-aphid interaction. Moreover, the impact of nematode's initial density and infection time on plant defense is poorly understood. Here we aim to examine the induced defense responses by root-knot nematode Meloidogyne incognita against aboveground feeding aphid Sitobion avenae in wheat. Further, we investigated the influence of the nematode infection density as well as the length of infection in these interactions. We tested the direct and indirect defense responses triggered by M. incognita against S. avenae as well as how the responses affect the preference of Harmonia axyridis. Plant volatiles and hormones were determined to explore plant defense mechanisms that mediate aboveground-belowground defense. The photosynthetic rate was tested to examine plant tolerance strategy. We found that, both low and high densities M. incognita root infection at 7 days post inoculation (dpi) reduced the feeding of the aphid S. avenae. Behavioral assay showed that H. axyridis preferred plants co-damaged by both M. incognita and S. avenae at 7 dpi. M. incognita infection induced the changes of jasmonic acid, salicylic acid and volatile content, which mediated plant response to S. avenae. Furthermore, photosynthetic rate in wheat increased at 5 dpi under 300 M. incognita or 1000 M. incognita infection. These results suggest that plant roots induced multiple defense strategies against foliar herbivores as damages increased. Our study provides evidence of a complex dynamic response of wheat aboveground defense against aphids in response to belowground nematode damage on a temporal scale"
Keywords:Animals *Aphids Herbivory Hormones Triticum *Tylenchoidea Aboveground-belowground interactions Induced systemic resistance Insect behavior Phytohormones Plant photosynthesis Volatiles;
Notes:"MedlineShi, Jin-Hua Liu, Hao Pham, The Cuong Hu, Xin-Jun Liu, Le Wang, Chao Foba, Caroline Ngichop Wang, Shu-Bo Wang, Man-Qun eng Netherlands 2022/01/08 Sci Total Environ. 2022 Apr 1; 815:152840. doi: 10.1016/j.scitotenv.2021.152840. Epub 2022 Jan 5"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 05-12-2024