New stilbenoids from peanut ( Arachis hypogaea ) seeds challenged by an Aspergillus caelatus strain.
Four new stilbene derivatives, termed arahypins, have been isolated from peanut seeds challenged by an Aspergillus caelatus strain, along with two known stilbenoids that have not been previously reported in peanuts. The structures of these new putative phytoalexins were determined by analysis of NMR, MS, and UV data. Together with other known peanut stilbenoids that were also produced in the challenged seeds, these new compounds may play a defensive role against invasive fungi.
Sobolev
Victor S
VS
US Department of Agriculture, National Peanut Research Laboratory, Agricultural Research Service, Dawson, Georgia 39842, USA. victor.sobolev@ars.usda.gov
Neff
Scott A
SA
Gloer
James B
JB
D010367:Arachis / Q000737:chemistry / Q000382:microbiology*; D001230:Aspergillus / Q000502:physiology*; D012639:Seeds / Q000737:chemistry / Q000378:metabolism / Q000382:microbiology*; D012717:Sesquiterpenes; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism*; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification / Q000378:metabolism; D000094162:Phytoalexins
D012717:Sesquiterpenes; D013267:Stilbenes; D013729:Terpenes; D000094162:Phytoalexins