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Piriformospora indica improves salinity stress tolerance in Zea mays L. plants by regulating N+ and K+ loading in root and allocating K+ in shoot

Citation

Yun, P and Xu, L and Wang, S-S and Shabala, L and Shabala, S and Zhang, W-Y, Piriformospora indica improves salinity stress tolerance in Zea mays L. plants by regulating N+ and K+ loading in root and allocating K+ in shoot, Plant Growth Regulation, 86, (2) pp. 323-331. ISSN 0167-6903 (2018) [Refereed Article]


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DOI: doi:10.1007/s10725-018-0431-3

Abstract

Piriformospora indica is known as a fungus that can easily colonize a wide range of plants and enhance hostís growth and tolerance to abiotic stresses, including salinity. The mechanistic basis behind this phenomenon remains poorly understood. This work was aimed to fill in this gap and reveal mechanisms enhancing salinity tolerance in maize roots colonised by P. indica. A range of agronomic and physiological characteristics were compared between inoculated and non-inoculated maize plants under 0/100/200†mM NaCl conditions. The impact of P. indica inoculation or rootís cytosolic K+ retention ability were also assessed using micro-electrode ion flux estimation technique. The results showed that inoculated plants had higher biomass, higher stomatal conductance, lower K+ efflux from roots and higher potassium content in shoots than non-inoculated plants under salt stress. Collectively, the results indicated that the beneficial effects of inoculation on plant performance under saline conditions were mainly attributed to the improved stomata operation associated with higher rate of K delivery into the shoots.

Item Details

Item Type:Refereed Article
Keywords:Piriformospora indica, salinity stress, potassium loading, micro-electrode ion flux estimation, salinity, xylem loading, stomata
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Summer Grains and Oilseeds
Objective Field:Maize
UTAS Author:Shabala, L (Associate Professor Lana Shabala)
UTAS Author:Shabala, S (Professor Sergey Shabala)
ID Code:130056
Year Published:2018
Web of Science® Times Cited:1
Deposited By:Agriculture and Food Systems
Deposited On:2019-01-08
Last Modified:2019-01-15
Downloads:0

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