Effects of Dendrolimus punctatus feeding and methyl jasmonate (MeJA) --or terpenes fumigation on abscisic acid and jasmonic acid contents in Pinus massoniana seedling needles
Deng, W.-H.; Shen, Y.-B.; Chen, H.-J.; Li, Z.-Y.; Jiang, X.-N.
Ying Yong Sheng Tai Xue Bao 20(5): 1166-1170
2009
ISSN/ISBN: 1001-9332 PMID: 19803176 Document Number: 637875
Abscisic acid (ABA) and Jasmonic acid (JA) play an important role in inducing the stress-resistance of plants. In this study, parts of the needles on a ring of Pinus massoniana seedling shoots were subjected to 4 hours Dendrolimus punctatus feeding or 4 hours fumigation with 10 micromol x L(-1) of methyl jasmonate (MeJA) or terpenes, and the ABA and JA contents in treated needles, untreated neighboring sister needles, and untreated needles above and below the ring were determined by GC/MS. An obvious increase of ABA and JA contents was observed in all of the needles, whether they were treated or not, illustrating that ABA and JA were the vital signaling molecules in the wound signal transduction pathway, and participated in the formation of systematic resistance of P. massoniana seedlings.