Dj. Perry et Gr. Furnier, PINUS-BANKSIANA HAS AT LEAST 7 EXPRESSED ALCOHOL-DEHYDROGENASE GENES IN 2 LINKED GROUPS, Proceedings of the National Academy of Sciences of the United Statesof America, 93(23), 1996, pp. 13020-13023
The alcohol dehydrogenase (Adh) gene family is much more complex in Pi
nus banksiana than in angiosperms, with at least seven expressed genes
organized as two tightly linked clusters. Intron number and position
are highly conserved between P. banksiana and angiosperms. Unlike angi
osperm Adh genes, numerous duplications, as large as 217 bp, were obse
rved within the noncoding regions of P. banksiana Adh genes and may be
a common feature of conifer genes. A high frequency of duplication ov
er a wide range of scales may contribute to the large genome size of c
onifers.