Linking salinity stress tolerance with tissue-specific Na(+) sequestration in wheat roots

Frontiers in Plant Science
Honghong WuSergey Shabala

Abstract

Salinity stress tolerance is a physiologically complex trait that is conferred by the large array of interacting mechanisms. Among these, vacuolar Na(+) sequestration has always been considered as one of the key components differentiating between sensitive and tolerant species and genotypes. However, vacuolar Na(+) sequestration has been rarely considered in the context of the tissue-specific expression and regulation of appropriate transporters contributing to Na(+) removal from the cytosol. In this work, six bread wheat varieties contrasting in their salinity tolerance (three tolerant and three sensitive) were used to understand the essentiality of vacuolar Na(+) sequestration between functionally different root tissues, and link it with the overall salinity stress tolerance in this species. Roots of 4-day old wheat seedlings were treated with 100 mM NaCl for 3 days, and then Na(+) distribution between cytosol and vacuole was quantified by CoroNa Green fluorescent dye imaging. Our major observations were as follows: (1) salinity stress tolerance correlated positively with vacuolar Na(+) sequestration ability in the mature root zone but not in the root apex; (2) contrary to expectations, cytosolic Na(+) levels in root meristem...Continue Reading

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Citations

Nov 21, 2015·Journal of Experimental Botany·Min ZhuSergey Shabala
Feb 23, 2017·Annual Review of Plant Biology·Abdelbagi M Ismail, Tomoaki Horie
May 31, 2017·Plant, Cell & Environment·Ali Kiani-PouyaSergey Shabala
Mar 3, 2018·International Journal of Molecular Sciences·Monika KeishamSatish C Bhatla
May 31, 2019·The Plant Journal : for Cell and Molecular Biology·Honghong WuSergey Shabala
Apr 21, 2019·The New Phytologist·Rana MunnsStephen D Tyerman
Nov 7, 2019·The Plant Journal : for Cell and Molecular Biology·Megan C SheldenStephen D Tyerman
Mar 5, 2019·Frontiers in Plant Science·Stanislav V Isayenkov, Frans J M Maathuis
Jan 1, 2016·Journal of Experimental Botany·Feifei WangSergey Shabala
Oct 19, 2019·Journal of Experimental Botany·Rohit JoshiSneh Lata Singla-Pareek
Jan 26, 2017·Frontiers in Plant Science·Maria Grazia AnnunziataPetronia Carillo
Aug 21, 2020·Pest Management Science·Michelle MakRobert Spooner-Hart
Mar 8, 2021·Plant Physiology and Biochemistry : PPB·Wenqiang WangQunqun Hao

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Methods Mentioned

BETA
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light microscopy

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SPSS
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