Leaf Demography and Plant-Insect Interactions: Goldenrods and Phloem-Feeding Aphids

1984 ◽  
Vol 124 (1) ◽  
pp. 137-142 ◽  
Author(s):  
D. C. Hartnett ◽  
F. A. Bazzaz
Keyword(s):  
Leaf Demography ◽  
Plant Insect Interactions ◽  
Insect Interactions ◽  
Phloem Feeding

Leaf Demography and Plant-Insect Interactions: A Further Comment

1986 ◽  
Vol 127 (4) ◽  
pp. 561-564 ◽  
Author(s):  
David C. Hartnett ◽  
Fakhri A. Bazzaz
Keyword(s):  
Leaf Demography ◽  
Plant Insect Interactions ◽  
Insect Interactions

scholarly journals Focus on Molecular Plant-Nematode and Plant-Insect Interactions

2013 ◽  
Vol 26 (1) ◽  
pp. 8-8 ◽  
Author(s):  
Saskia Hogenhout ◽  
Melissa Mitchum ◽  
Geert Smant
Keyword(s):  
Host Plant ◽  
Plant Root ◽  
Parasitic Nematodes ◽  
Cellular Processes ◽  
Plant Insect Interactions ◽  
Recent Developments ◽  
Plant Nematode ◽  
Insect Interactions ◽  
Plant Root System ◽  
Phloem Feeding

Sedentary plant-parasitic nematodes engage in a long-lasting and intimate relationship with their host plant. This interaction starts in the soil when freshly hatched infective juveniles are attracted to specific parts of a host plant root system. Little is known of what determines the attractiveness of host plant roots, but a mix of biochemical and structural cues from specific host tissues in the roots likely triggers invasive behavior in nematodes. Similarly to nematodes, phloem-feeding aphids and other piercing-sucking (hemipteran) insects must establish close associations with their host plants in order to modulate plant cellular processes to promote feeding and reproduction. This focus issue on molecular interactions between plants and different representatives of the animal kingdom sheds light on recent developments and offers a platform for exciting new data in this field. We are grateful to all the authors for their diverse contributions and for making this focus issue possible. Click on Next Article or Table of Contents above to view the articles in this Focus Issue. (From the Mobile site, go to the MPMI January 2013 issue.)

scholarly journals Challenging battles of plants with phloem-feeding insects and prokaryotic pathogens

2019 ◽  
Vol 116 (47) ◽  
pp. 23390-23397 ◽  
Author(s):  
Yanjuan Jiang ◽  
Chuan-Xi Zhang ◽  
Rongzhi Chen ◽  
Sheng Yang He
Keyword(s):  
Vascular System ◽  
Insect Pests ◽  
Mesophyll Cell ◽  
Future Research ◽  
Insect Pathogen ◽  
Global Food Security ◽  
Plant Insect Interactions ◽  
Insect Interactions ◽  
Phloem Feeding ◽  
Global Food

For the past 4 decades, intensive molecular studies of mostly leaf mesophyll cell-infecting pathogens and chewing insects have led to compelling models of plant–pathogen and plant–insect interactions. Yet, some of the most devastating pathogens and insect pests live in or feed on the phloem, a systemic tissue belonging to the plant vascular system. Phloem tissues are difficult to study, and phloem-inhabiting pathogens are often impossible to culture, thus limiting our understanding of phloem–insect/pathogen interactions at a molecular level. In this Perspective, we highlight recent literature that reports significant advances in the understanding of phloem interactions with insects and prokaryotic pathogens and attempt to identify critical questions that need attention for future research. It is clear that study of phloem–insect/pathogen interactions represents an exciting frontier of plant science, and influx of new scientific expertise and funding is crucial to achieve faster progress in this important area of research that is integral to global food security.

Averting robo-bees: why free-flying robotic bees are a bad idea

2019 ◽  
Vol 3 (6) ◽  
pp. 723-729
Author(s):  
Roslyn Gleadow ◽  
Jim Hanan ◽  
Alan Dorin
Keyword(s):  
Climate Change ◽  
Computer Simulation ◽  
Food Security ◽  
European Countries ◽  
Plant Interactions ◽  
Plant Insect Interactions ◽  
Native Habitat ◽  
Insect Pollinators ◽  
Insect Interactions

Food security and the sustainability of native ecosystems depends on plant-insect interactions in countless ways. Recently reported rapid and immense declines in insect numbers due to climate change, the use of pesticides and herbicides, the introduction of agricultural monocultures, and the destruction of insect native habitat, are all potential contributors to this grave situation. Some researchers are working towards a future where natural insect pollinators might be replaced with free-flying robotic bees, an ecologically problematic proposal. We argue instead that creating environments that are friendly to bees and exploring the use of other species for pollination and bio-control, particularly in non-European countries, are more ecologically sound approaches. The computer simulation of insect-plant interactions is a far more measured application of technology that may assist in managing, or averting, ‘Insect Armageddon' from both practical and ethical viewpoints.

scholarly journals Plant Metabolites Involved in the Differential Development of a Heliantheae-Specialist Insect

Metabolites ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 134
Author(s):  
Marília Elias Gallon ◽  
Leonardo Gobbo-Neto
Keyword(s):  
Larval Development ◽  
Sesquiterpene Lactones ◽  
Nutritional Ecology ◽  
Plant Metabolites ◽  
Plant Insect Interactions ◽  
Tridax Procumbens ◽  
Integrative Studies ◽  
Specialist Insect ◽  
Insect Interactions ◽  
New Research

Balanced nutritional intake is essential to ensure that insects undergo adequate larval development and metamorphosis. Integrative multidisciplinary approaches have contributed valuable insights regarding the ecological and evolutionary outcomes of plant–insect interactions. To address the plant metabolites involved in the larval development of a specialist insect, we investigated the development of Chlosyne lacinia caterpillars fed on Heliantheae species (Tithonia diversifolia, Tridax procumbens and Aldama robusta) leaves and determined the chemical profile of plants and insects using a metabolomic approach. By means of LC-MS and GC-MS combined analyses, 51 metabolites were putatively identified in Heliantheae species and C. lacinia caterpillars and frass; these metabolites included flavonoids, sesquiterpene lactones, monoterpenoids, sesquiterpenoids, diterpenes, triterpenes, oxygenated terpene derivatives, steroids and lipid derivatives. The leading discriminant metabolites were diterpenes, which were detected only in A. robusta leaves and insects that were fed on this plant-based diet. Additionally, caterpillars fed on A. robusta leaves took longer to complete their development to the adult phase and exhibited a greater diapause rate. Hence, we hypothesized that diterpenes may be involved in the differential larval development. Our findings shed light on the plant metabolites that play roles in insect development and metabolism, opening new research avenues for integrative studies of insect nutritional ecology.

Livestock grazing disrupts plant-insect interactions on salt marshes

2017 ◽  
Vol 11 (2) ◽  
pp. 152-161 ◽  
Author(s):  
Corinna Rickert ◽  
Andreas Fichtner ◽  
Roel van Klink
Keyword(s):  
Salt Marshes ◽  
Livestock Grazing ◽  
Plant Insect Interactions ◽  
Insect Interactions
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