Pectin methylesterase-generated methanol may be involved in tobacco leaf growthстатья
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Дата последнего поиска статьи во внешних источниках: 16 апреля 2014 г.
Аннотация:Plant leaves undergo a sink-source modification of intercellular macromolecular transport during the transition from carbon import to export. After assessing the role of metabolite signalling in gene regulation in Nicotiana tabacum sink and source leaves, we observed increased pectin methylesterase (PME)-mediated methanol generation in immature leaves. Using suppression subtractive hybridisation (SSH), we identified a number of genes whose activity changes from sink- to source leaves. The most abundant SSH-identified genes appeared to be sensitive to methanol. We hypothesise that tobacco leaf maturation and the sink-source transition are accompanied by a change in mRNA levels of genes that function in methanol-dependent cell signalling.