Plant–insect–pathogen interactions: a naturally complex ménage à trois

Franco, Flávia P; Moura, Daniel S.; Vivanco, Jorge M.; Silva-Filho, Márcio C.

doi:10.1016/j.mib.2017.04.007

Cited by 53 publications

(54 citation statements)

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“…Interactions between plants and microbes are ubiquitous and can range from beneficial to parasitic or pathogenic. There is growing recognition that plant-associated microbes play important roles in modulating plant phenotypes and shaping interactions between plants and insects [21][22][23][24] For example, increasing evidence indicates that microbes alter plant-produced cues that subsequently influence the oviposition and foraging behavior of insect herbivores [25][26][27]. In this review, we discuss different ways that beneficial and pathogenic plant-associated microbes modify visual, olfactory, and gustatory cues in plants, focusing on microbes that spend at least a portion of their lifecycle on a plant.…”

Section: Introductionmentioning

confidence: 99%

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Grunseich

Thompson

Aguirre

et al. 2019

Plants

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There is increasing evidence that plant-associated microorganisms play important roles in shaping interactions between plants and insect herbivores. Studies of both pathogenic and beneficial plant microbes have documented wide-ranging effects on herbivore behavior and performance. Some studies, for example, have reported enhanced insect-repellent traits or reduced performance of herbivores on microbe-associated plants, while others have documented increased herbivore attraction or performance. Insect herbivores frequently rely on plant cues during foraging and oviposition, suggesting that plant-associated microbes affecting these cues can indirectly influence herbivore preference. We review and synthesize recent literature to provide new insights into the ways pathogenic and beneficial plant-associated microbes alter visual, olfactory, and gustatory cues of plants that affect host-plant selection by insect herbivores. We discuss the underlying mechanisms, ecological implications, and future directions for studies of plant-microbial symbionts that indirectly influence herbivore behavior by altering plant traits.

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Section: Introductionmentioning

confidence: 99%

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Grunseich

Thompson

Aguirre

et al. 2019

Plants

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“…Plant–herbivore–pathogen interactions affect the occurrence, spread and outbreak of pathogens and insect herbivores. When plants are attacked by herbivores or pathogens, their physiology may be altered in ways that affect subsequent attacks (Stout et al ., ; Franco et al ., ; Raman & Suryanarayanan, ). In the present research, we found that the resistance to M. oryzae , the causal agent of rice blast, was increased when rice plants were previously infested by the stem borer C. suppressalis or the planthopper N. lugens .…”

Section: Discussionmentioning

confidence: 99%

“…Plant-herbivore-pathogen interactions affect the occurrence, spread and outbreak of pathogens and insect herbivores. When plants are attacked by herbivores or pathogens, their physiology may be altered in ways that affect subsequent attacks (Stout et al, 2006;Franco et al, 2017;Raman & Suryanarayanan, 2017). In the present (A and B), Nilaparvata lugens (C and D), Cnaphalocrocis medinalis (E and F).…”

Section: Discussionmentioning

confidence: 99%

Herbivore‐induced rice resistance against rice blast mediated by salicylic acid

et al. 2018

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In agro-ecosystems, plants are important mediators of interactions between their associated herbivorous insects and microbes, and any change in plants induced by one species may lead to cascading effects on interactions with other species. Often, such effects are regulated by phytohormones such as jasmonic acid (JA) and salicylic acid (SA). Here, we investigated the tripartite interactions among rice plants, three insect herbivores (Chilo suppressalis, Cnaphalocrocis medinalis or Nilaparvata lugens), and the causal agent of rice blast disease, the fungus Magnaporthe oryzae. We found that pre-infestation of rice by C. suppressalis or N. lugens but not by C. medinalis conferred resistance to M. oryzae. For C. suppressalis and N. lugens, insect infestation without fungal inoculation induced the accumulation of both JA and SA in rice leaves. In contrast, infestation by C. medinalis increased JA levels but reduced SA levels. The exogenous application of SA but not of JA conferred resistance against M. oryzae. These results suggest that pre-infestation by C. suppressalis or N. lugens conferred resistance against M. oryzae by increasing SA accumulation. These findings enhance our understanding of the interactions among rice plant, insects and pathogens, and provide valuable information for developing an ecologically sound strategy for controlling rice blast.

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“…Plant growth regulators already present within the plants that provide suitable signals against the harassment of the pathogen resulted to provide aid to the consequent comeback against herbivores [38]. Hence the defensive system activated resulted molecular physiology, biochemistry, volatile and non volatile (VOC’s) compounds [35,39-42] of the weed plant changed [39,43].…”

Section: Introductionmentioning

confidence: 99%

Phytochemical screening, GC-MS profiling of invasive cocklebur (Xanthium strumarium)-insect-pathogen interaction and simulated volatile chemical signaling at Northeast China

Iqbal

Feng

2020

Preprint

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Invasive cocklebur (Xanthium strumarium) is characterized by its excellent genetic 10 and ecological plasticity, ability to spread in agriculture crops. There is a dire need to locate 11 useful management strategies to control this invasive weed at diversified latitudinal gradients. In 12 ecology, there is weak evidence that the damage caused by the natural enemy varies with 13 latitudes. Therefore, we investigated this evidence with the help of transect quadratic ecological 14 sampling method which was conducted randomly at ten different sites of Northeast China. 15Overall, significantly high infestation of gall-forming insect (Epiblema strenuana) was observed 16 on Xanthium leaves (21.16%) at 41.51279°N, followed by 40.2241°N latitude. Similarly, there 17 was a significantly high abundance of Epiblema infestation (7.3) with high damage (3.88%) at 18 41.51279°N and 40.12749°N latitude. Likewise, the fungal abundance (5.6) of rust i.e. Puccinia 19 xanthii (presenting 16.23% attack) was dominated significantly at 41.51279°N. Hence, high 20 pathogen infection rate (8.97%) was detected at 40.2241 o N. On the other hand growth 21 parameters, i.e. plant height (cm), stem diameter (mm) vary with latitude and longitudinal trends. 22 In our experiment, of plant natural enemy interaction provides the evidence-based indication the 23 Epiblema abundance, was diversified at 41.51279 o N, and P. xanthii infection was most frequent 24 at 40.22411°N latitudes. This study provides an evidence-based indication that natural enemy 25 pressure varies with latitude, however this investigations gave valuable information that insect 26 and phytopathological fungus having biological control potential against Xanthium strumarium 27 invasive weed. Secondly, phytochemical qualitative and chemical signaling through Gas 28 Chromatography-mass spectrometry (GC-MS) executed the presence of flavonoids, phenols, 29 saponins, alkaloids, terpenoids, nitrogen (N), sulpher (S), silicon (Si) containing compounds in 30 both treated and controlled leaves that defend against Puccinia xanthii. Fascinatingly, all X. 31 strumarium populations collected from different latitudes possess similar compositions. In 32 interaction mechanism, plant known to omit volatile organic compounds in response to attack of 33 natural herbivores. The leave chemical profiling suggested that the influence of fungus attack on 34 invasive weed brought different changes in chemical infrastructure of leave and these chemicals 35 also play a vital role in the food web. After attack of these biological control agents, plants 36 exhibits passionate compound reprogramming within the leaf naturally that act upon in defense 37 systems. 38 Author summary 39 • The study was conducted to observe the environmental impact on the trend of insect, 40 invasive weed and pathogens. 41 • There was a significant dominance of gall-forming insect on invasive Xanthium weed at 42 all locations. 43 • Puccinia xanthii infected more than 16% plantation 44 • Plant growth had significant variation at variou...

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Plant–insect–pathogen interactions: a naturally complex ménage à trois

Cited by 53 publications

References 53 publications

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

The Role of Plant-Associated Microbes in Mediating Host-Plant Selection by Insect Herbivores

Herbivore‐induced rice resistance against rice blast mediated by salicylic acid

Phytochemical screening, GC-MS profiling of invasive cocklebur (Xanthium strumarium)-insect-pathogen interaction and simulated volatile chemical signaling at Northeast China

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