Canadian Forest Service Publications
Interactions of airborne methyl jasmonate with vegetative storage protein gene and protein accumulation and biomass partitioning in Populus plants. 2000. Beardmore, T.; Wetzel, S.; Kalous, M. Canadian Journal of Forest Research 30: 1106-1113.
Year: 2000
Issued by: Atlantic Forestry Centre
Catalog ID: 18123
Language: English
Availability: Order paper copy (free)
Abstract
In young poplar (Populus nigra Muench X Populus maximowiczii A. Henry) plants, vegetative storage proteins (VSPs), the bark storage protein (BSP), and (or) wound-inducible 4 protein (WIN4) mRNAs were present in the apical and basal leaves and in the basal leaves, respectively. VSPs accumulated in the apical leaves and to a lesser extent in the stem. The response of the plants to 20 µM airborne methyl jasmonate (MJ) was examined in four parts (apical and basal leaves, stem, and roots) in both short-term (within 72 h) and long-term (1, 2, 3, and 4 weeks) experiments. In the short term, MJ-treated plants either induced or increased the part-specific expression of win4 and bsp, and accumulation of BSP and (or) WIN4. In the long term, MJ treatment resulted in part-specific alterations in protein and nitrogen concentration and further altered BSP and WIN4 accumulation. The MJ-treated plants increased both the biomass allocation to the stem, without a change in relative growth rate, and the tolerance for low temperature (-2EC). Together, these results suggest the BSP and WIN4 are both involved in short-term N cycling and that exogenous MJ treatment promotes changes in nitrogen metabolism in poplar.