Preliminary studies on differential defense responses induced during plant communication.
We compared the expression patterns of three representative genes in undamaged tomato and tobacco plants in response to exposure to either tomato or tobacco fed on by Helicoverpa armigera (cotton bollworm). When tomato and tobacco, two species of one family, were incubated in the chambers with the tomato plants damaged by the cotton bollworm, the expression of the PR1, BGL2, and PAL genes was up-regulated in leaves of both plants. However, the levels of gene expression were significantly higher in the tomato than that in the tobacco. In addition, the activities of enzymes, peroxidase, polyphenol oxidase, and lipoxygenase were found to be higher in the tomato than those in the tobacco. Similar results were obtained when the damaged plants were replaced by the tobacco.
Peng
Jin Ying
JY
Institute of Plant Physiology and Ecology, Shanghai Institute for Biological Sciences, Graduate School of the Chinese Academy of Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China.
Li
Zhong Hai
ZH
Xiang
Hui
H
Huang
Jian Hua
JH
Jia
Shi Hai
SH
Miao
Xue Xia
XX
Huang
Yong Ping
YP
D000818:Animals; D004156:Catechol Oxidase / Q000096:biosynthesis / Q000235:genetics; D004790:Enzyme Induction; D018506:Gene Expression Regulation, Plant; D007915:Lepidoptera; D008084:Lipoxygenase / Q000096:biosynthesis / Q000235:genetics; D018551:Solanum lycopersicum / Q000201:enzymology*; D009195:Peroxidase / Q000096:biosynthesis / Q000235:genetics; D018515:Plant Leaves / Q000201:enzymology; D010940:Plant Proteins / Q000378:metabolism*; D014026:Nicotiana / Q000201:enzymology*; D015854:Up-Regulation
D010940:Plant Proteins; D004156:Catechol Oxidase; D009195:Peroxidase; D008084:Lipoxygenase