scholarly journals Disruption of AtHAK / KT / KUP9 enhances plant cesium accumulation under low potassium supply

2021 ◽  
Author(s):  
Laure Genies ◽  
Ludovic Martin ◽  
Satomi Kanno ◽  
Serge Chiarenza ◽  
Loïc Carasco ◽  
...  
Keyword(s):  
Low Potassium ◽  
Potassium Supply

Rootstocks can enhance tomato growth and quality characteristics at low potassium supply

2013 ◽  
Vol 149 ◽  
pp. 70-79 ◽  
Author(s):  
Dietmar Schwarz ◽  
Gölgen Bahar Öztekin ◽  
Yüksel Tüzel ◽  
Bernhard Brückner ◽  
Angelika Krumbein
Keyword(s):  
Quality Characteristics ◽  
Low Potassium ◽  
Potassium Supply ◽  
Tomato Growth

Using rootstock to increase watermelon fruit yield and quality at low potassium supply: A comprehensive analysis from agronomic, physiological and transcriptional perspective

2018 ◽  
Vol 241 ◽  
pp. 144-151 ◽  
Author(s):  
Yaqin Zhong ◽  
Chen Chen ◽  
Muhammad Azher Nawaz ◽  
Yanyan Jiao ◽  
Zhuhua Zheng ◽  
...  
Keyword(s):  
Comprehensive Analysis ◽  
Fruit Yield ◽  
Yield And Quality ◽  
Low Potassium ◽  
Potassium Supply

scholarly journals Disruption of AtHAK/KT/KUP9 enhances plant cesium accumulation under low potassium supply

2020 ◽  
Author(s):  
Laure Genies ◽  
Ludovic Martin ◽  
Satomi Kanno ◽  
Serge Chiarenza ◽  
Loïc Carasco ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Primary Role ◽  
In Planta ◽  
Experimental Conditions ◽  
Low Potassium ◽  
Significant Impairment ◽  
Potassium Supply ◽  
Mutant Lines ◽  
Low K

ABSTRACTUnderstanding molecular mechanisms which underlie transport of cesium (Cs+) in plants is important to limit entry of its radioisotopes from contaminated area to the food chain. The potentially toxic element Cs+, which is not involved in any biological process, is chemically closed to the macronutrient potassium (K+). Among the multiple K+ carriers, the high-affinity K+ transporters family HAK/KT/KUP is thought to be relevant in mediating opportunistic Cs+ transport. On the 13 KUP identified in Arabidopsis thaliana, only HAK5, the major contributor to root K+ acquisition under low K+ supply, has been functionally demonstrated to be involved in Cs+ uptake in planta. In the present study, we showed that accumulation of Cs+ increased by up to 30% in two A. thaliana mutant lines lacking KUP9 and grown under low K+ supply. Since further experiments revealed that Cs+ release from contaminated plants to the external medium is proportionally lower in the two kup9 mutants, we proposed that KUP9 disruption could impair Cs+ efflux. By contrast, we did not measure significant impairment of K+ status in kup9 mutants suggesting that KUP9 disruption does not alter substantially K+ transport in experimental conditions used here. Putative primary role of KUP9 in plants is further discussed.

scholarly journals The Role of a Potassium Transporter OsHAK5 in Potassium Acquisition and Transport from Roots to Shoots in Rice at Low Potassium Supply Levels

2014 ◽  
Vol 166 (2) ◽  
pp. 945-959 ◽  
Author(s):  
T. Yang ◽  
S. Zhang ◽  
Y. Hu ◽  
F. Wu ◽  
Q. Hu ◽  
...  
Keyword(s):  
Potassium Transporter ◽  
Low Potassium ◽  
Potassium Supply

scholarly journals Grafting Tobacco onto Nutrient-efficient Rootstocks Improves Photosynthesis

2021 ◽  
pp. 1-8
Author(s):  
Wei Hu ◽  
Qing Di ◽  
Jingyi Wei ◽  
Jie Zhang ◽  
Jia Liu
Keyword(s):  
Electron Transfer ◽  
High Efficiency ◽  
Photosynthetic Performance ◽  
Potassium Deficiency ◽  
Transfer Efficiency ◽  
Gas Exchange Parameters ◽  
Bisphosphate Carboxylase ◽  
Tobacco Leaves ◽  
Low Potassium ◽  
Potassium Supply

Potassium deficiency is a major problem limiting tobacco (Nicotiana tabacum) growth, and grafting has the potential to alleviate it. To compare the photosynthetic performance of grafted tobacco under different potassium levels, tobacco Yunyan 87 (main cultivar) and Wufeng No. 2 (potassium high-efficiency cultivar) were selected to conduct mutual grafting trials in the form of hydroculture with two potassium supply levels (5 mmol·L−1 K and 0.5 mmol·L−1 K). The plant growth, gas exchange parameters, chlorophyll a fluorescence, and the initial ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO) activity were measured. The results showed that potassium deficiency could significantly decrease the net photosynthetic rate, stomatal conductance (gS), and transpiration rate in the tobacco leaves, resulting in nonstomatal restriction. Grafting could effectively alleviate this problem. The actual quantum yield of photosystem II (PSII) photochemicals in ‘Yunyan 87’ increased 29.4% and 20.3% by grafting, respectively, under normal and low potassium levels. Compared with nongrafted ‘Yunyan 87’, grafting also effectively improved the electron transfer efficiency of PSII in the tobacco leaves under low potassium stress by reducing nonradiation energy dissipation and enhancing the initial activity of RuBisCO. From this study, it can be known that grafted tobacco plants can improve their photosynthesis by alleviating the nonstomata restriction of leaves under potassium stress and improving the electron transfer efficiency of PSII.

Ultrastructural evaluation of preservation and reperfusion effects of low potassium dextran glucose solution in canine allograft lungs

2000 ◽  
Vol 32 (7) ◽  
pp. 2439-2441
Author(s):  
K.Y Kwon ◽  
C.K Park ◽  
C.H Cho ◽  
W.H Cho ◽  
E.S Chang
Keyword(s):  
Glucose Solution ◽  
Low Potassium
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