For many years, auxin, cytokinin and strigolactone were thought to be the main phytohormones controlling shoot branching, while
the potential role of gibberellin had been overlooked. Ni et al. (on pp. 1655–1666) report that gibberellin acts as a positive regulator
of shoot branching in the perennial biofuel plant Jatropha curcas. This work indicates that unlike in annual herbaceous plants, such
as Arabidopsis thaliana and pea, regulation of shoot branching in perennial trees is more complex and involves the interaction of
gibberellin with other phytohormones.
Cover image shows an axillary bud in Jatropha curcas stimulated by co-application of gibberellin and cytokinin. Image supplied
by J. Ni and Z.-F. Xu (University of Science and Technology of China, and Xishuangbanna Tropical Botanical Garden, Chinese
Academy of Sciences).
Cover story: Gibberellin promotes shoot branching in the perennial woody plant Jatropha curcas
创建: Sep 21, 2018 | 10:27