Dynamics in plant roots and shoots minimize stress, save energy and maintain water and nutrient uptake

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2020

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Arsova, B.
Foster, K.J.
Shelden, M.C.
Bramley, H.
Watt, M.

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New Phytologist, 2020; 225(3):1111-1119

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Borjana Arsova, Kylie J. Foster, Megan C. Shelden, Helen Bramley and Michelle Watt

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Abstract

Plants are inherently dynamic. Dynamics minimize stress while enabling plants to flexibly acquire resources. Three examples are presented for plants tolerating saline soil: transport of sodium chloride (NaCl), water and macronutrients is nonuniform along a branched root; water and NaCl redistribute between shoot and soil at night-time; and ATP for salt exclusion is much lower in thinner branch roots than main roots, quantified using a biophysical model and geometry from anatomy. Noninvasive phenotyping and precision agriculture technologies can be used together to harness plant dynamics, but analytical methods are needed. A plant advancing in time through a soil and atmosphere space is proposed as a framework for dynamic data and their relationship to crop improvement.

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© 2019 The Authors. New Phytologist © 2019 New Phytologist Trust

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