Nematode parasites achieve chronic infection by overcoming the innate immunity system of the hosts.In plants, the role of JA to innate immunity is well established in the leaves.The role of JA in defending against parasitic root knot nematode is largely unknown.Here, we showed the root knot nematode Meloidogyne incognita infection induced Allene Oxide Synthase1 (AOS1) and OPR3 (12- oxo-Phytodienoic Acid Reductase 3) dependent JA and Jasmonate Resistant1 (JAR1) dependent JA-Ile biosynthesis.The nematode reproduction ability was significantly lower on the JA-Ile deficient roots(aos1, opr3, jar1) than those of wild types.Two JA signal transduction mutants, the coronatine insensitive1 (coi1) and the JA insensitive1 (jin1), showed wile type susceptibility to the nematode infection.The decreasing nematode reproduction ability on the roots of jar1, specifically missing JA-Ile, could be rescued by exogenous application of JA-Ile.JA synthesis pathway is important in prouss of the nematode infect Arabidopsis root.
WANG Jing
,
WU Xiao-hong
,
Qilemuge
,
Terigele
,
QI Zhi
,
KANG Yan
. JA Mediated Signaling Pathway Regulate Plant Defense Responses of Root Knot Nematode[J]. Acta Agriculturae Boreali-Sinica, 2014
, 29(3)
: 234
-237
.
DOI: 10.7668/hbnxb.2014.03.042
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