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Salinity tolerance of lentil is achieved by enhanced proline accumulation, lower level of sodium uptake and modulation of photosynthetic traits
Journal of Agronomy and Crop Science ( IF 3.7 ) Pub Date : 2021-10-20 , DOI: 10.1111/jac.12560
Maria R. Panuccio 1 , Federico Romeo 1 , Federica Marra 1 , Carmelo Mallamaci 1 , Muhammad Iftikhar Hussain 2 , Adele Muscolo 1
Affiliation  

Lentil (Lens culinaris, Medik.), an accessible low-cost high-quality protein form for many people, is a salt-sensitive legume, which already at an electrical conductivity (EC) of 3 dS/m (~30 mM NaCl) has a yield loss of about 90% compared to other crops. Identifying salinity-tolerant lentil germplasm is nowadays of primary importance for ensuring the production of superfood and the sustainability of the lentil industry. In this study, four cultivars Castelluccio di Norcia, Eston, Ustica and Pantelleria were grown up to a complete life cycle, in an open field, in soils conditioned with 100 mM NaCl and were compared with the same cultivars grown in unsalinized soils. Growth parameters, osmolytes and phenotypic characteristics of lentils were assessed. Our results evidenced different mechanisms specific for each tolerant cultivar. Pantelleria was the cultivar that mostly accumulated sodium in shoot and root and used it in addition to proline as osmoregulatory. Ustica accumulated less sodium and calcium than Pantelleria but more chlorine in root and enhanced also the production of the osmoregulatory. Castelluccio accumulated less sodium but more calcium and sulphates than the other two resistant cultivars, producing at the same time also osmolytes. The preference of ion uptake and compartmentalization can depend on the growth environment. PANT and UST are islander, therefore, prevalently in contact with sodium and chlorine, while CAST originated from central Italy is cultivated in soil where calcium and sulphate are the most abundant element.

中文翻译:

小扁豆的耐盐性是通过增强脯氨酸积累、降低钠吸收水平和调节光合特性来实现的

扁豆 ( Lens culinaris, Medik.) 是一种可供许多人使用的低成本高品质蛋白质形式,是一种对盐敏感的豆科植物,其电导率 (EC) 已达到 3 dS/m (~30 mM NaCl) 时会出现产量损失与其他作物相比约为 90%。如今,识别耐盐小扁豆种质对于确保超级食品的生产和小扁豆产业的可持续性至关重要。在这项研究中,四种栽培品种 Castelluccio di Norcia、Eston、Ustica 和 Pantelleria 在开阔的田地中,在 100 mM NaCl 条件下的土壤中生长到完整的生命周期,并与在未盐化土壤中生长的相同栽培品种进行了比较。评估了小扁豆的生长参数、渗透物和表型特征。我们的结果证明了每种耐受品种特有的不同机制。Pantelleria 是主要在茎和根中积累钠的品种,除脯氨酸外,还使用钠作为渗透压调节剂。Ustica 比 Pantelleria 积累更少的钠和钙,但在根中积累更多的氯,并且还增强了渗透压调节剂的产生。与其他两个抗性品种相比,Castelluccio 积累的钠较少,但钙和硫酸盐较多,同时也产生渗透物。离子吸收和分隔的偏好可能取决于生长环境。PANT 和 UST 是岛民,因此普遍与钠和氯接触,而源自意大利中部的 CAST 则种植在钙和硫酸盐含量最高的土壤中。Ustica 比 Pantelleria 积累更少的钠和钙,但在根中积累更多的氯,并且还增强了渗透压调节剂的产生。与其他两个抗性品种相比,Castelluccio 积累的钠较少,但钙和硫酸盐较多,同时也产生渗透物。离子吸收和分隔的偏好可能取决于生长环境。PANT 和 UST 是岛民,因此普遍与钠和氯接触,而源自意大利中部的 CAST 则种植在钙和硫酸盐含量最高的土壤中。Ustica 比 Pantelleria 积累更少的钠和钙,但在根中积累更多的氯,并且还增强了渗透压调节剂的产生。与其他两个抗性品种相比,Castelluccio 积累的钠较少,但钙和硫酸盐较多,同时也产生渗透物。离子吸收和分隔的偏好可能取决于生长环境。PANT 和 UST 是岛民,因此普遍与钠和氯接触,而源自意大利中部的 CAST 则种植在钙和硫酸盐含量最高的土壤中。离子吸收和分隔的偏好可能取决于生长环境。PANT 和 UST 是岛民,因此普遍与钠和氯接触,而源自意大利中部的 CAST 则种植在钙和硫酸盐含量最高的土壤中。离子吸收和分隔的偏好可能取决于生长环境。PANT 和 UST 是岛民,因此普遍与钠和氯接触,而源自意大利中部的 CAST 则在钙和硫酸盐含量最高的土壤中种植。
更新日期:2021-10-20
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