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Evaluation of Proline-Ascorbate Mixture (PAM) in Alleviation of NaCl Induced Stress in Vigna radiata (L.) Wilczek
Russian Agricultural Sciences Pub Date : 2021-04-12 , DOI: 10.3103/s1068367421010110
Mahima Misti Sarkar , Swarnendu Roy

Abstract—Excess amount of salt causes problem in physiological and biochemical processes of plants. In the present study, the effect of different concentrations of NaCl on physiological and biochemical changes of Vigna radiata (L.) Wilczek seedlings compared to the control plants were evaluated. Also the effect of proline-ascorbate mixture (PAM) on the alleviation of NaCl stress in the plants was assessed. In this study some physiological parameters like relative water content, shoot length, diameter of leaves; biochemical parameters like proline, protein, sugars, phenols, chlorophyll and carotenoid content along with H2O2 and superoxide anion content, catalase, peroxidase and amylase activity, ascorbate content; and sodium, potassium and calcium ion content was examined. All the physiological parameters decreased with increasing salt concentration but with PAM treatment the extent of decrease was lower. Proline content was highest in 0.2 M NaCl concentration in case of both the treatments but with PAM treatment the accumulation was much lower. Phenols, chlorophylls and protein content decreased with increasing NaCl concentration but with PAM treatment the decrease was less. Catalase and peroxidase enzyme activity increased with increasing NaCl stress but with PAM treatment their activities declined at higher concentration. Sodium, potassium and calcium ion content also increased with PAM treatment in comparison to that of the NaCl only stress. Therefore, from the present study, we could conclude that the external application of proline and ascorbate mixture overall could relieve the extent of NaCl stress as evident from the physiological and biochemical parameters studied.



中文翻译:

脯氨酸-抗坏血酸混合物(PAM)减轻Vigna radiata(L.)Wilczek NaCl诱导的胁迫的评估

摘要—过量的盐会导致植物的生理和生化过程出现问题。在本研究中,评估了与对照植物相比,不同浓度的NaCl对Vi豆Vigna radiata(L.)Wilczek)幼苗的生理和生化变化的影响。还评估了脯氨酸-抗坏血酸混合物(PAM)对减轻植物体内NaCl胁迫的作用。在这项研究中,一些生理参数,如相对含水量,枝条长度,叶片直径;诸如脯氨酸,蛋白质,糖,酚,叶绿素和类胡萝卜素含量以及H 2 O 2的生化参数超氧阴离子含量,过氧化氢酶,过氧化物酶和淀粉酶活性,抗坏血酸盐含量;并检查钠,钾和钙离子含量。所有生理参数均随盐浓度的增加而降低,但采用PAM处理后,降低的幅度较小。在两种处理中,脯氨酸含量均以0.2 M NaCl浓度最高,但采用PAM处理时,其积累量要低得多。苯酚,叶绿素和蛋白质含量随NaCl浓度的增加而降低,但PAM处理的降低幅度较小。随着NaCl胁迫的增加,过氧化氢酶和过氧化物酶的活性增加,但是在PAM处理下,它们的活性在较高的浓度下下降。与仅NaCl胁迫相比,PAM处理的钠,钾和钙离子含量也增加。所以,

更新日期:2021-04-13
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