000K utf8 1100 2023$c2023-05-06 1500 eng 2050 urn:nbn:de:gbv:27-dbt-20230607-140211-006 2051 10.3390/plants12091888 3000 Paulmann, Maria K. 3010 Furch, Alexandra C. U. 3010 Gershenzon, Jonathan 3010 Kunert, Grit 3010 Wegner, Linus 4000 Pea Aphid ( Acyrthosiphon pisum ) Host Races Reduce Heat-Induced Forisome Dispersion in Vicia faba and Trifolium pratense [Paulmann, Maria K.] 4060 17 Seiten 4209 Although phloem-feeding insects such as aphids can cause significant damage to plants, relatively little is known about early plant defenses against these insects. As a first line of defense, legumes can stop the phloem mass flow through a conformational change in phloem proteins known as forisomes in response to Ca 2+ influx. However, specialized phloem-feeding insects might be able to suppress the conformational change of forisomes and thereby prevent sieve element occlusion. To investigate this possibility, we triggered forisome dispersion through application of a local heat stimulus to the leaf tips of pea ( Pisum sativum ), clover ( Trifolium pratense ) and broad bean ( Vicia faba ) plants infested with different pea aphid ( Acyrthosiphon pisum ) host races and monitored forisome responses. Pea aphids were able to suppress forisome dispersion, but this depended on the infesting aphid host race, the plant species, and the age of the plant. Differences in the ability of aphids to suppress forisome dispersion may be explained by differences in the composition and quantity of the aphid saliva injected into the plant. Various mechanisms of how pea aphids might suppress forisome dispersion are discussed. 4950 https://doi.org/10.3390/plants12091888$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:27-dbt-20230607-140211-006$xR$3Volltext$534 4961 https://www.db-thueringen.de/receive/dbt_mods_00057551 5051 570 5550 aphid saliva 5550 calcium 5550 legume 5550 pea aphid host race 5550 phloem located defense 5550 phloem protein 5550 Pisum sativum 5550 sieve element occlusion 5550 Trifolium pratense 5550 Vicia faba