PT  - JOURNAL ARTICLE
AU  - Cheong, Yong Hwa
AU  - Chang, Hur-Song
AU  - Gupta, Rajeev
AU  - Wang, Xun
AU  - Zhu, Tong
AU  - Luan, Sheng
TI  - Transcriptional Profiling Reveals Novel Interactions between Wounding, Pathogen, Abiotic Stress, and Hormonal Responses in Arabidopsis
AID  - 10.1104/pp.002857
DP  - 2002 Jun 01
TA  - Plant Physiology
PG  - 661--677
VI  - 129
IP  - 2
4099  - http://www.plantphysiol.org/content/129/2/661.short
4100  - http://www.plantphysiol.org/content/129/2/661.full
SO  - Plant Physiol.2002 Jun 01; 129
AB  - Mechanical wounding not only damages plant tissues, but also provides pathways for pathogen invasion. To understand plant responses to wounding at a genomic level, we have surveyed the transcriptional response of 8,200 genes in Arabidopsis plants. Approximately 8% of these genes were altered by wounding at steady-state mRNA levels. Studies of expression patterns of these genes provide new information on the interactions between wounding and other signals, including pathogen attack, abiotic stress factors, and plant hormones. For example, a number of wound-responsive genes encode proteins involved in pathogen response. These include signaling molecules for the pathogen resistance pathway and enzymes required for cell wall modification and secondary metabolism. Many osmotic stress- and heat shock-regulated genes were highly responsive to wounding. Although a number of genes involved in ethylene, jasmonic acid, and abscisic acid pathways were activated, many in auxin responses were suppressed by wounding. These results further dissected the nature of mechanical wounding as a stress signal and identified new genes that may play a role in wounding and other signal transduction pathways.