NaCl and Na2SO4 Salinities Have Different Impact on Photosynthesis and Yield-Related Parameters in Rice (Oryza sativa L.)

Irakoze, Willy; Prodjinoto, Hermann; Nijimbere, Sevérin; Rufyikiri, Gervais; Lutts, Stanley

doi:10.3390/agronomy10060864

Cited by 29 publications

(15 citation statements)

References 42 publications

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“…In contrast, Ls was signi cantly higher than that of the control (Fig. 4-7), which is consistent with the results of previous studies [43][44][45] . The decrease of Ci and the increase of Li and the simultaneous decrease of Pn and Gs are thought to lead to the decrease of photosynthetic rate through stomatal limitation 46,47 , which because salt stress causes physiological drought in plants.…”

Section: Discussionsupporting

confidence: 92%

Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Zhang

Zheng

Feng

et al. 2022

Preprint

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Salt stress inhibits crop quality and yields, and growth regulators are used to enhance salt tolerance of crops. Here, we report the effect of prohexadione-calcium (Pro-Ca) on rice tillering under salt stress. The results showed the malondialdehyde (MDA) levels and electrolyte leakage in leaves were increased as well as the expression of the antioxidant enzymes was induced under salt stress. Foliar application of Pro-Ca reduced seedling height, increased the stem base width, improved the lodging resistance of rice, decreased MDA content and electrolyte leakage, and alleviated the membrane damage of rice under salt stress. Exogenous Pro-Ca also increased the net photosynthetic rate (Pn) and the stomatal conductance (Gs) of rice, decreased the intercellular CO2 concentration (Ci), and increased the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) of rice at the tillering stage under salt stress. In conclusion, Pro-Ca improved the salt tolerance of rice at the tillering stage by enhancing the lodging resistance of rice, alleviating cell membrane damage of leaves caused by NaCl stress, and enhancing photosynthesis and antioxidant capacity. Effect of Pro-Ca on rice at the tillering stage under 0.3% NaCl stress was discussed, which provided a theoretical basis for revealing physiological changes at the rice tillering stage.

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Section: Discussionsupporting

confidence: 92%

Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Zhang

Zheng

Feng

et al. 2022

Preprint

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“…Seeds of all 20 oat genotypes were germinated in hydroponics using Hoagland nutrient solution (Hoagland & Arnon, 1938) with seven different salinity levels. Since, actual field salinity is resultant of accumulation of various salt ions mixture (Bai et al, 2018;Irakoze et al 2020;Vargas et al 2018), therefore to mimic saline field condition in pots and hydroponic media, we used mixture of NaCl and Na 2 SO 4 in our study. Both NaCl and Na 2 SO 4 salts were mixed in equimolar ratio in such a way that the resultant solutions were of 0, 60, 80, 100, 120, 140 and 160 mM concentrations.…”

Section: Experiments 1: Seed Germination Studiesmentioning

confidence: 99%

Elucidating morpho‐anatomical, physio‐biochemical and molecular mechanism imparting salinity tolerance in oats (Avena sativa)

et al. 2021

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Oat is an important cereal crop commonly used for food, feed and forage due to its high nutritional quality and beneficial effects on human health and livestock productivity (Choubey et al., 2003).In the last few decades, salinity has emerged as a major threat to crop production, as it influences the plant growth at different developmental stages. Notably, almost 80 million ha of the world's arable land is prone to salinity stress with globally 20% (45 million ha) of irrigated and 2% (32 million ha) of dry lands constrained by salinity (Munns, 2005). Intensity of salt affected soils is expected to be aggravated in the coming years due to unsustainable irrigation, traces of toxic sodium containing salts in irrigation water and rising water tables (Deinlein et al., 2014). Global climate changes scenarios, such as drought and heat, result in excessive evaporation and salt accumulation in the soil, which also increases soil salinity at the rate of 10% annually (Shrivastava & Kumar, 2015;Tester, 2003;Zhu et al., 2015). Salinization under field conditions is a global problem and a crucial factor to limit oat production and productivity. Oat is reported to have moderate tolerance to salinity and it can be grown in soil having high salt concentrations and high pH (Bai et al., 2013).However, studies on evaluating the morpho-physiological and

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“…It is considered as the major abiotic factor that limits plant productivity and agricultural yield [1,2]. Several studies have reported that salts present in soil and in irrigation water reduce plant growth [3][4][5][6][7][8][9][10] and consequently reduce crop production. Soil salinity affects plant growth, either through osmotic effects or ionic toxicity effects.…”

Section: Introductionmentioning

confidence: 99%

Ions and Organic Solutes as Implicated in the Ameliorative Effect of Exogenous Application of Calcium on Salt Stressed Tomato (Lycopersicon esculentum Mill.) Plants

Henry

Sossa

Noumavo

et al. 2021

IJPSS

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Aims: This study evaluated the role of sodium, potassium, proline and soluble sugars accumulation in the ameliorative effect of an exogenous application of calcium on the detrimental effect of salinity on tomato plants. Study Design: The experiment was implemented as a Completely Randomized Design (RCD) with four treatments and three replications. Place and Duration of Study: The experiment was realized in a green house of the Faculty of Agronomical Sciences, University of Abomey-Calavi, Benin Republic from June to July 2020. Methodology: Three weeks old plants of the tomato cultivar “Padma” was submitted in pots to four treatments comprising the control (without NaCl); salt stress (120 mM NaCl) and a combination of 120 mM NaCl and exogenous application of 40 mM CaSO4 or Ca (NO3)2 by irrigation every two days. Plants growth, sodium (Na) and potassium (K) as well as proline and soluble sugars contents of leaves and roots were determined after two weeks. Results: Salt effect reduced significantly plant growth at P =.05, root K content at P =.05 and leaf K/Na ratio at P =.01 whereas it increased significantly leaf Na at P =.05 and root soluble sugars content at P =.05. The application of exogenous calcium (Ca) induced a significant amelioration of plant growth at P =.01 more marked with CaSO4 than with Ca (NO3)2. This treatment induced a significant decrease at P =.01 in leaf and root Na content and a significant increase at P =.05 in root K content only for CaSO4, a significant increase at P =.01 in leaf K/Na ratio and a significant increase at P =.01 in leaf and root proline content only for Ca(NO3)2. Conclusion: The ameliorative effect of both forms of calcium was due mainly to sodium (Na) exclusion from leaves and potassium (K) accumulation associated to a maintain of high K/Na ratio mainly in leaves. The importance of proline accumulation as an indicator of this ameliorative effect was associated only to Ca(NO3)2.

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NaCl and Na2SO4 Salinities Have Different Impact on Photosynthesis and Yield-Related Parameters in Rice (Oryza sativa L.)

Cited by 29 publications

References 42 publications

Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Effect of NaCl stress on tillering of rice (Oryza sativa L.) and mitigation regulation of prohexadione-calcium

Elucidating morpho‐anatomical, physio‐biochemical and molecular mechanism imparting salinity tolerance in oats (Avena sativa)

Ions and Organic Solutes as Implicated in the Ameliorative Effect of Exogenous Application of Calcium on Salt Stressed Tomato (Lycopersicon esculentum Mill.) Plants

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