Transcriptomic characterization of gall tissue of Japanese elm tree (Ulmus davidiana var. japonica) induced by the aphid Tetraneura nigriabdominalis.
Insect galls are abnormal plant tissues induced by parasitic insect(s) for use as their habitat. In previous work, we suggested that gall tissues induced by the aphid Tetraneura nigriabdominalis on Japanese elm trees are less responsive than leaf tissues to jasmonic acid (JA), which is involved in the production of volatile organic compounds as a typical defensive reaction of plants against attack by insect pests. A comprehensive analysis of gene expression by RNA sequencing indicated that the number of JA responsive genes was markedly lower in gall tissues than in leaf tissues. This suggests that gall tissues are mostly defective in JA signaling, although JA signaling is not entirely compromised in gall tissue. Gene ontology analysis sheds light on some stress-related unigenes with higher expression levels in gall tissues, suggesting that host plants sense aphids as a biotic stress but are defective in the JA-mediated defense response in gall tissues.
a Department of Bioresource Science , Ibaraki University , Inashiki , Japan.
Mami
M
Takei
b Faculty of Applied Bioscience, Department of Bioscience , Tokyo University of Agriculture , Setagaya, Tokyo , Japan.
Shinsaku
S
Ito
c NODAI Genome Research Center, Tokyo University of Agriculture , Setagaya, Tokyo , Japan.
Keisuke
K
Tanaka
c NODAI Genome Research Center, Tokyo University of Agriculture , Setagaya, Tokyo , Japan.
Taichiro
T
Ishige
a Department of Bioresource Science , Ibaraki University , Inashiki , Japan.
Yoshihito
Y
Suzuki
D000818:Animals; D001042:Aphids / Q000472:pathogenicity* / Q000502:physiology; D003517:Cyclopentanes / Q000276:immunology / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D063990:Gene Ontology; D006790:Host-Parasite Interactions; D018836:Inflammation Mediators / Q000276:immunology / Q000378:metabolism; D058977:Molecular Sequence Annotation; D054883:Oxylipins / Q000276:immunology / Q000378:metabolism; D018515:Plant Leaves / Q000235:genetics / Q000276:immunology / Q000469:parasitology; D010940:Plant Proteins / Q000235:genetics* / Q000276:immunology; D010941:Plant Tumors / Q000235:genetics* / Q000469:parasitology; D015398:Signal Transduction; D059467:Transcriptome / Q000276:immunology*; D034403:Ulmus / Q000235:genetics* / Q000276:immunology / Q000469:parasitology
D003517:Cyclopentanes; D018836:Inflammation Mediators; D054883:Oxylipins; D010940:Plant Proteins; C011006:jasmonic acid
Gall; RNA sequencing; Tetraneura nigriabdominalis; Ulmus davidiana; jasmonates