Profiling of plant hormones by mass spectrometry.

Plant hormones regulate various aspects of plant growth and development, and different hormones may interact additively, synergistically, or antagonistically. Mass spectrometry has become a powerful tool for quantitative profiling of multiple classes of plant hormones because of its high sensitivity and selectivity. The capacity to simultaneously quantify multiple classes of phytohormones will facilitate the study of hormone function and cross-talk.