8O' Neill M A, Ishii T, Albersheim P, et al. Rhamnogalacturonan II: structure and function of a borate cross-linked cell wall pectic polysaccharide[J]. Ann Rev Plant Bio,2004,55(1):109-139.
9Iwai H, Hokura A, Oishi M, et al. The gene responsible for borate cross-linking of peetion rhamnogalacturonan-II is required for plant reproductive tissue development and fertilization[J]. Proe Natl Acad Sci USA,2006,103(44): 16592-16597.
