Next Article in Journal
Four Centuries of Medicinal Mosses and Liverworts in European Ethnopharmacy and Scientific Pharmacy: A Review
Next Article in Special Issue
Exogenous Putrescine Enhances Salt Tolerance and Ginsenosides Content in Korean Ginseng (Panax ginseng Meyer) Sprouts
Previous Article in Journal
Chemical Composition, Allelopathic, Antioxidant, and Anti-Inflammatory Activities of Sesquiterpenes Rich Essential Oil of Cleome amblyocarpa Barratte & Murb.
Previous Article in Special Issue
Root-System Architectures of Two Cuban Rice Cultivars with Salt Stress at Early Development Stages
Article

Different Rhizospheric pH Conditions Affect Nutrient Accumulations in Rice under Salinity Stress

1
Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan
2
Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8528, Japan
3
Faculty of Agricultural Technology, Valaya Alongkorn Rajabhat University under the Royal Patronage, 1 Moo 20, Phaholyothin Road, Klong Neung, Klong Luang, Pathum Thani 13180, Thailand
4
Department of Agronomy, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand
*
Author to whom correspondence should be addressed.
Academic Editors: Ewa Hanus-Fajerska and Iwona Kamińska
Plants 2021, 10(7), 1295; https://doi.org/10.3390/plants10071295
Received: 9 May 2021 / Revised: 17 June 2021 / Accepted: 22 June 2021 / Published: 25 June 2021
(This article belongs to the Special Issue Plants Subjected to Salinity Stress)
This study was conducted to determine the responses to saline-alkaline (SA) stress with regard to nutrient accumulation in two rice varieties having different tolerances to salt-stress. A salinity-tolerant landrace, Pokkali, and a salinity-sensitive variety, PTT1, were exposed to three levels of SA conditions, pH 7.0 (mild), pH 8.0 (moderate), and pH 9.0 (severe), under 50 mM Na stress. The results indicated that Pokkali had comparably greater SA tolerance than PTT1 owing to its higher biomass production. The maintenance of the lower Na/K ratio in Pokkali shoots was achieved by the higher expression of OsHKT1;5 encoding a Na+ transporter in the shoots, OsNHX1 encoding a tonoplast-localized Na+/H+ antiporter in the roots, and OsHAK16 encoding a K+ transporter in the roots under SA conditions. We propose that the high expression of Fe deficiency-responsive genes, OsIRT1, OsIRO2, OsYSL15, OsNAS1, and OsNAS2, in both rice varieties under all SA conditions should contribute to Fe homeostasis in the shoots. In addition, SA treatment increased the concentrations of Ca, Mn, Zn, and Cu in the roots but decreased their concentrations in the shoots of both varieties. Overall, the results indicated that high rhizospheric pH influenced nutrient uptake and translocation from the roots to the shoots in rice. View Full-Text
Keywords: Na exclusion; nutrients accumulation; rice saline-alkaline tolerance Na exclusion; nutrients accumulation; rice saline-alkaline tolerance
Show Figures

Figure 1

MDPI and ACS Style

Nampei, M.; Jiadkong, K.; Chuamnakthong, S.; Wangsawang, T.; Sreewongchai, T.; Ueda, A. Different Rhizospheric pH Conditions Affect Nutrient Accumulations in Rice under Salinity Stress. Plants 2021, 10, 1295. https://doi.org/10.3390/plants10071295

AMA Style

Nampei M, Jiadkong K, Chuamnakthong S, Wangsawang T, Sreewongchai T, Ueda A. Different Rhizospheric pH Conditions Affect Nutrient Accumulations in Rice under Salinity Stress. Plants. 2021; 10(7):1295. https://doi.org/10.3390/plants10071295

Chicago/Turabian Style

Nampei, Mami, Kamonthip Jiadkong, Sumana Chuamnakthong, Thanakorn Wangsawang, Tanee Sreewongchai, and Akihiro Ueda. 2021. "Different Rhizospheric pH Conditions Affect Nutrient Accumulations in Rice under Salinity Stress" Plants 10, no. 7: 1295. https://doi.org/10.3390/plants10071295

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop