Proline and other physiological changes as an indicator of abiotic stress caused by heavy metal contamination

被引:7
作者
Reddy, Salla Hemadri [1 ]
Al-kalbani, Hajer [2 ]
Al-Qalhati, Shaikha [2 ]
Al-Kahtani, Abdullah A. [3 ]
Al Hoqani, Umaima [2 ]
Azmi, Syed Najmul Hejaz [2 ]
Kumar, Ashok [4 ]
Kumar, Sandeep [5 ]
Settaluri, Vijaya Saradhi [2 ]
机构
[1] Apollo Univ, Sch Hlth Sci, Dept Biomed Sci, Chittoor 517127, India
[2] Univ Technol & Appl Sci, Coll Appl Sci & Pharm, Appl Sci Dept, Muscat, Oman
[3] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia
[4] Chitkara Univ, Chitkara Ctr Res & Dev, Kalujhanda 174103, Himachal Prades, India
[5] Chitkara Univ, Chitkara Univ Inst Engn & Technol, Ctr Res Impact & Outcome, Rajpura 140401, Punjab, India
关键词
Phytoremediation; Proline content; Chlorophyll content; AAS; Heavy metals; Soil extraction; Seed germination; ANTIOXIDANT ENZYMES; SEEDLING GROWTH; CADMIUM; LEAD; RESPONSES; ACCUMULATION; GERMINATION; METABOLISM; TOLERANCE; TOXICITY;
D O I
10.1016/j.jksus.2024.103313
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Heavy metal pollution due to globalization becomes the incurable hazardous problem for the agriculture productivity is due to industrialization with increased population. In this article impact of stress caused by heavy metals on shoot and root development along with phytoaccumulation was studied. The heavy metals cadmium (Cd), copper (Cu), zinc (Zn), lead (Pb) and nickel (Ni) are taken at varying concentrations ranging from 0 to 250 ppm, while cadmium concentrations ranged from 0 to 50 ppm. The findings revealed that seed germination and plant growth were impacted due to higher percentages of these metals under study. Among them copper, nickel, lead and cadmium exhibited the most pronounced effects on chlorophyll content, root and shoot growth as well as on seed germination, moreover, the physiological analysis indicated that increasing heavy metal concentrations induced greater stress, resulting in decreased chlorophyll content and elevated proline levels, underscoring the significant impact of stress caused by heavy metals on the growth of plants. Delayed germination and growth were observed across all replicates with increased concentrations of all tested heavy metals. Despite zinc being an essential nutrient for plant growth, it was noted that it exhibited a positive effect on chlorophyll content and stimulated the production of fibrous roots, although growth was delayed at higher concentrations. The phytoaccumulation of heavy metals was analysed using atomic absorption spectroscopy (AAS) to quantify the absorption of heavy metals by seedlings, thereby assessing the accumulation or evaporation of heavy metals.
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页数:6
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