Plant defense against fall armyworm in micro-sympatric maize (Zea maysssp.mays) and Balsas teosinte (Zea maysssp.parviglumis)

2012 ◽  
Vol 145 (3) ◽  
pp. 191-200 ◽  
Author(s):  
Chelsea G. Takahashi ◽  
Lauren L. Kalns ◽  
Julio S. Bernal
Keyword(s):  
Plant Defense ◽  
Fall Armyworm

scholarly journals The race goes on: A fall armyworm-resistant maize inbred line influences insect oral secretion elicitation activity and nullifies herbivore suppression of plant defense

2021 ◽  
Author(s):  
Saif ul Malook ◽  
Xiao-Feng Liu ◽  
Wende Liu ◽  
Jinfeng Qi ◽  
Shaoqun Zhou
Keyword(s):  
Plant Defense ◽  
Host Plant ◽  
Inbred Line ◽  
Defense Mechanisms ◽  
Molecular Mechanisms ◽  
Fall Armyworm ◽  
Defense Responses ◽  
Feeding Preference ◽  
Maize Inbred Line ◽  
Oral Secretion

Fall armyworm (Spodoptera frugiperda) is an invasive lepidopteran pest with strong feeding preference towards maize (Zea mays). Its success on maize is facilitated by a suite of specialized detoxification and manipulation mechanisms that curtail host plant defense responses. In this study, we identified a Chinese maize inbred line Xi502 that was able to mount effective defense in response to fall armyworm attack. Comparative transcriptomics analyses, phytohormonal measurements, and targeted benzoxazinoid quantification consistently demonstrate significant inducible defense responses in Xi502, but not in the susceptible reference inbred line B73. In 24 hours, fall armyworm larvae feeding on B73 showed accelerated maturation-oriented transcriptomic responses and more changes in detoxification gene expression compared to their Xi502-fed sibling. Interestingly, oral secretions collected from larvae fed on B73 and Xi502 leaves demonstrated distinct elicitation activity when applied on either host genotypes, suggesting that variation in both insect oral secretion composition and host plant alleles could influence plant defense response. These results revealed host plant adaptation towards counter-defense mechanisms in a specialist insect herbivore, adding yet another layer to the evolutionary arms race between maize and fall armyworm. This could facilitate future investigation into the molecular mechanisms in this globally important crop-pest interaction system.

scholarly journals Intraspecific differences in plant defense induction by fall armyworm strains

2018 ◽  
Vol 218 (1) ◽  
pp. 310-321 ◽  
Author(s):  
Flor E. Acevedo ◽  
Michelle Peiffer ◽  
Swayamjit Ray ◽  
Robert Meagher ◽  
Dawn S. Luthe ◽  
...  
Keyword(s):  
Plant Defense ◽  
Fall Armyworm ◽  
Defense Induction

The Spread of Fall Armyworm (faw) Spodotera Frugiperda

2018 ◽  
Vol 29 (5) ◽  
pp. 213-214 ◽  
Author(s):  
Graham Matthews
Keyword(s):  
Fall Armyworm ◽  
Sub Saharan Africa ◽  
Sub Saharan ◽  
Army Worm

The author introduces the next three articles on the invasion of Fall Army Worm into Sub-Saharan Africa and Asia describing how the pest spreads, the damage it causes and approaches to its control.

Sign in / Sign up

Export Citation Format

Share Document