Potassium transport and compartmentation in cereals: improving K+ nutrition and tolerance to abiotic stress

Lead Research Organisation: University of York
Department Name: Biology

Abstract

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Publications

10 25 50
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Isayenkov S (2011) Membrane localisation diversity of TPK channels and their physiological role. in Plant signaling & behavior

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Isayenkov S (2013) Arabidopsis thaliana vacuolar TPK channels form functional K? uptake pathways in Escherichia coli. in Plant signaling & behavior

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Isayenkov S (2010) Vacuolar ion channels: Roles in plant nutrition and signalling. in FEBS letters

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Isayenkov S (2011) Rice two-pore K+ channels are expressed in different types of vacuoles. in The Plant cell

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Kavitha PG (2012) Rice cultivars with differing salt tolerance contain similar cation channels in their root cells. in Journal of experimental botany

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Lewis AC (2016) Evaluating the performance of low cost chemical sensors for air pollution research. in Faraday discussions

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Maathuis FJ (2013) Roles and functions of plant mineral nutrients. in Methods in molecular biology (Clifton, N.J.)

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Maathuis FJ (2008) Conservation of protein phosphorylation sites within gene families and across species. in Plant signaling & behavior

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Maathuis FJ (2009) Physiological functions of mineral macronutrients. in Current opinion in plant biology

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Maathuis FJM (2011) Vacuolar two-pore K+ channels act as vacuolar osmosensors. in The New phytologist

 
Description 1: We found that two rice TPKs target to different types of vacuole in rice, in spite of very similar sequence and transport properties. We showed that the distinct expression patterns are due to specific residues in the C-termini.

2: Our study on HvHKT2;1 is the first to give a detailed report on the role of HKT transporters in a salt tolerant plant. HKT2;1 overexpression improved barley salt tolerance.

3: An in depth patch clamp study of plant TPKs showed that these vacuolar channels are mechanosensitive and that they may constitute hitherto unknown vacuolar osmosensors
Exploitation Route findings about salt stress responses and potassium nutrition may be used in efforts to breed/develop more resistant crops
Sectors Agriculture

Food and Drink
 
Description parnership exists between my group and that of Dr Dorina Podar (Babes-Bolyai University, Romania) 
Organisation Babes-Bolyai University
Country Romania 
Sector Academic/University 
PI Contribution An ongoing parnership exists between my group and the partners on the original project to study the role of HKT and TPK in barley This (non-funded) work mainly focusses on obtaining barley transgenics that overexpress both HKT2;3 and HvTPK1 In the context of the above, I also collaborate with Babes-Bolyai University, Romania who will carry out the barley crosses
Start Year 2006
 
Description partnership exists between my group and that of Dr Herve Sentenac (the partners on the original project) 
Organisation French National Institute of Agricultural Research
Country France 
Sector Academic/University 
PI Contribution An ongoing parnership exists between my group and the partners on the original project to study the role of HKT and TPK in barley This (non-funded) work mainly focusses on obtaining barley transgenics that overexpress both HKT2;3 and HvTPK1 In the context of the above, I also collaborate with Dr Dorina Podar (Babes-Bolyai University, Romania) who will carry out the barley crosses
Collaborator Contribution electrophysiological characterisation of HKT transporters
Impact many publications
Start Year 2006