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J Chem Ecol

Title:		Survey of Sensitivity to Fatty Acid-Amino Acid Conjugates in the Solanaceae
Author(s):		Grissett L; Ali A; Coble AM; Logan K; Washington B; Mateson A; McGee K; Nkrumah Y; Jacobus L; Abraham E; Hann C; Bequette CJ; Hind SR; Schmelz EA; Stratmann JW;
Address:		"Department of Biological Sciences, University of South Carolina, Columbia, SC, USA. Fred Hutchinson Cancer Research Center, University of Washington School of Dentistry, Seattle, WA, USA. Department of Plant Biology, Pennsylvania State University, University Park, PA, USA. R.J. Reynolds Tobacco, Winston-Salem, NC, USA. Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA. Section of Cell and Developmental Biology, University of California at San Diego, La Jolla, CA, 92093, USA. Department of Biological Sciences, University of South Carolina, Columbia, SC, USA. johstrat@biol.sc.edu"
Journal Title:		J Chem Ecol
Year:		2020
Volume:		20200127
Issue:		3
Page Number:		330 - 343
DOI:		10.1007/s10886-020-01152-y
ISSN/ISBN:		1573-1561 (Electronic) 0098-0331 (Linking)
Abstract:		"Plants perceive insect herbivores via a sophisticated surveillance system that detects a range of alarm signals, including herbivore-associated molecular patterns (HAMPs). Fatty acid-amino acid conjugates (FACs) are HAMPs present in oral secretions (OS) of lepidopteran larvae that induce defense responses in many plant species. In contrast to eggplant (Solanum melongena), tomato (S. lycopersicum) does not respond to FACs present in OS from Manduca sexta (Lepidoptera). Since both plants are found in the same genus, we tested whether loss of sensitivity to FACs in tomato may be a domestication effect. Using highly sensitive MAP kinase (MAPK) phosphorylation assays, we demonstrate that four wild tomato species and the closely related potato (S. tuberosum) do not respond to the FACs N-linolenoyl-L-glutamine and N-linolenoyl-L-glutamic acid, excluding a domestication effect. Among other genera within the Solanaceae, we found that bell pepper (Capsicum annuum) is responsive to FACs, while there is a differential responsiveness to FACs among tobacco (Nicotiana) species, ranging from strong responsiveness in N. benthamiana to no responsiveness in N. knightiana. The Petunia lineage is one of the oldest lineages within the Solanaceae and P. hybrida was responsive to FACs. Collectively, we demonstrate that plant responsiveness to FACs does not follow simple phylogenetic relationships in the family Solanaceae. Instead, sensitivity to FACs is a dynamic ancestral trait present in monocots and eudicots that was repeatedly lost during the evolution of Solanaceae species. Although tomato is insensitive to FACs, we found that other unidentified factors in M. sexta OS induce defenses in tomato"
Keywords:		Amino Acids/*metabolism Animals *Antibiosis Fatty Acids/*metabolism *Herbivory Larva Manduca/*physiology Solanaceae/*physiology Species Specificity Fatty acid-amino acid conjugate Herbivore-associated molecular patterns (HAMPs) Lepidoptera Mapk Manduca se;
Notes:		"MedlineGrissett, Laquita Ali, Azka Coble, Anne-Marie Logan, Khalilah Washington, Brandon Mateson, Abigail McGee, Kelsey Nkrumah, Yaw Jacobus, Leighton Abraham, Evelyn Hann, Claire Bequette, Carlton J Hind, Sarah R Schmelz, Eric A Stratmann, Johannes W eng IOS-0745545/National Science Foundation/ 2018-67013-28125/USDA-NIFA-AFRI/ 2020/01/29 J Chem Ecol. 2020 Mar; 46(3):330-343. doi: 10.1007/s10886-020-01152-y. Epub 2020 Jan 27"