Guo, Qianqian published the artcileInsights into the functional relationship between cytokinin-induced root system phenotypes and nitrate uptake in Brassica napus, Category: alcohols-buliding-blocks, the publication is Functional Plant Biology (2017), 44(8), 832-844, database is CAplus and MEDLINE.
Root system architecture is the spatial arrangement of roots that impacts the capacity of plants to access nutrients and water. We employed pharmacol. generated morphol. and mol. phenotypes and used in situ 15N isotope labeling, to investigate whether contrasting root traits are of functional interest in relation to nitrate acquisition. Brassica napus L. were grown in solidified phytogel culture media containing 1mM KNO3 and treated with the cytokinin, 6-benzylaminopurine, the cytokinin antagonist, PI-55, or both in combination. The pharmacol. treatments inhibited root elongation relative to the control. The contrasting root traits induced by PI-55 and 6-benzylaminopurine were strongly related to 15N uptake rate. Large root proliferation led to greater 15N cumulative uptake rather than greater 15N uptake efficiency per unit root length, due to a systemic response in the plant. This relationship was associated with changes in C and N resource distribution between the shoot and root, and in expression of BnNRT2.1, a nitrate transporter. The root:shoot biomass ratio was pos. correlated with 15N cumulative uptake, suggesting the functional utility of root investment for nutrient acquisition. These results demonstrate that root proliferation in response to external nitrate is a behavior which integrates local N availability and the systemic N status of the plant.
Functional Plant Biology published new progress about 1122579-42-3. 1122579-42-3 belongs to alcohols-buliding-blocks, auxiliary class 5.6_Aromatics,Purines, name is 2-(((9H-Purin-6-yl)amino)methyl)-6-methylphenol, and the molecular formula is C13H13N5O, Category: alcohols-buliding-blocks.
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