{"id":18812,"date":"2020-07-01T16:50:00","date_gmt":"2020-07-01T13:50:00","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/scientists-identify-specific-molecular-elements-that-regulate-root-development\/"},"modified":"2020-07-01T16:50:00","modified_gmt":"2020-07-01T13:50:00","slug":"scientists-identify-specific-molecular-elements-that-regulate-root-development","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/scientists-identify-specific-molecular-elements-that-regulate-root-development\/","title":{"rendered":"#Scientists identify specific molecular elements that regulate root development"},"content":{"rendered":"

“#Scientists identify specific molecular elements that regulate root development<\/strong>”<\/p>\n

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\n Brachypodium plants grown at EMSL phytotron. Plant roots were harvested at different developmental stages for phenotyping and molecular analysis. A) Leaf development; B\/C) Early- and late-tillering is when new shoots emerge after the initial parent shoot grows from a seed; D) Booting\/heading: as the head moves up the stem, the top leaf begins to swell, indicating the plant is almost ready to bloom. Credit: Pacific Northwest National Laboratory
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Plant scientists at Pacific Northwest National Laboratory have garnered the most comprehensive\u2014and first ever\u2014genetic level dataset of the rooting process in a flowering model grass, Brachypodium. It’s a feat that gets scientists closer to increasing crop productivity to feed the growing global population and yield crops specifically for bioenergy.<\/p>\n

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The relationships of root genotype (genetic characteristics) to root phenotype (shape, morphology, or physical characteristics) during plant development are not well understood. Environmental factors modify root size and shape, but at the cellular and molecular levels plants still control their growth in response to internal factors.<\/p>\n

Using the plant laboratory, or phytotron, at the Environmental Molecular Science<\/a>s Laboratory (EMSL), researchers analyzed four stages of root development in Brachypodium distachyon, a short lifecycle, simple grass. Their findings were recently published in Scientific Reports<\/i>.
\n“We let the plants grow naturally and then studied them at specific time intervals,” said corresponding author Amir H. Ahkami. “This helps us pin-point when to expect a growth change rather than just knowing that one is going to happ<\/a>en.”
\nThe team harvested roots at leaf development, early-tillering, late-tillering, and booting\/heading stages. For each, they monitored root shape and quantified expressions of genes in the cells within the roots. They learned that multiple biological processes, including various families of transcription factors (TF)\u2014described by primary author Aaron Ogden as master regulators of gene expression\u2014were expressed differently in the root system during plant development. Specifically, five TF family members were upregulated\u2014meaning there were more receptors within the cell\u2014as the plant entered the booting\/heading stage, while two other TFs were downregulated (fewer receptors on the cell). This suggests that TF families are involved in specific phases of rooting, and it could include regulation of a plant’s reproductive stages.<\/p>\n

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