Boron in plants is mainly present in cell walls and plays an important role in stabilizing the structure of cell wall and promoting the growth and development of plants.Eudicots require more boron and are sensitive to boron deficiency，but there are significant genotypic differences in the resistance of different species and varieties to boron deficiency.Professor Yunhua Wang from Huazhong Agricultural University led a team to screen boron efficient varieties of Brassica napus in the early 1990s，thus initiating studies on the genetic and molecular mechanisms of boron efficiency in plants in China.The results of studying over a decade showed that there were two different molecular regulatory pathways for plants to improve boron efficiency under boron deficiency.In the B transporter-dependent pathway，the expression of NIPs and BORs family genes is induced by boron deficiency，which enhances the absorption of B in root and the distribution of B in shoot，achieving efficient absorption and transport of boron，thereby improving the resistance and adaptability of plants under B deficiency.In the B transporter-independent pathway，plants improve the utilization efficiency of boron in their shoot by influencing hormone signals and the expression of genes related to cell wall synthesis and metabolism，regulating the growth and development of root，and the structure of cell wall component，thereby enhancing plant resistance to boron deficiency.On the 100th anniversary of boron being identified as an essential nutrient for plants，the author reviewed and summarized these researches to enrich readers.At the same time，on the first anniversary of Mr.Wang Yunhua’s pass away，it is to commemorate his groundbreaking contribution in initiating the field of genetic studies on crop boron nutrition at Huazhong Agricultural University.