Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress
The intolerable levels of arsenic (As) in groundwater and its application in rice cultivation are continuously affecting the rice production in Ganga-Meghna-Brahmaputra (GMB) plain. The reduced germination and plant growth rates under excessive As stress ultimately lead to lower yield. To mitigate t...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651321004243 |
| _version_ | 1818823459066609664 |
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| author | Deepanjan Mridha Ishita Paul Ayan De Iravati Ray Antara Das Madhurima Joardar Nilanjana Roy Chowdhury Pratap Bhanu Singh Bhadoria Tarit Roychowdhury |
| author_facet | Deepanjan Mridha Ishita Paul Ayan De Iravati Ray Antara Das Madhurima Joardar Nilanjana Roy Chowdhury Pratap Bhanu Singh Bhadoria Tarit Roychowdhury |
| author_sort | Deepanjan Mridha |
| collection | DOAJ |
| description | The intolerable levels of arsenic (As) in groundwater and its application in rice cultivation are continuously affecting the rice production in Ganga-Meghna-Brahmaputra (GMB) plain. The reduced germination and plant growth rates under excessive As stress ultimately lead to lower yield. To mitigate this concerning issue, the present study was carried out to evaluate the potential of K-humate priming on seed germination and plant growth under As stress. Seeds were primed with 100 mg/l K-humate for 12 h prior to germination. The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively. However, germination percentage in K-humate primed seeds were 75 ± 5.0% and 68.3 ± 2.9% under AsV and AsIII stress, respectively. The vigour index I (VG I) and vigour index II (VG II) recorded on 12 DAS (days after seeding) were also increased by 1.47 and 1.51 fold, respectively with K-humate supplementation under As stress. Detrimental effects of AsIII on seed germination, seedling growth and other physiological parameters were more suppressive than AsV. Application of K-humate not only improved seed germination, seedling growth and nutrient uptake but also decreased the oxidative stress markers and antioxidant activities by minimizing As uptake and translocation in the seedlings. |
| first_indexed | 2024-12-18T23:40:18Z |
| format | Article |
| id | doaj.art-224fbb536af64feb86024476a3c1a333 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-12-18T23:40:18Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-224fbb536af64feb86024476a3c1a3332022-12-21T20:47:23ZengElsevierEcotoxicology and Environmental Safety0147-65132021-08-01219112313Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stressDeepanjan Mridha0Ishita Paul1Ayan De2Iravati Ray3Antara Das4Madhurima Joardar5Nilanjana Roy Chowdhury6Pratap Bhanu Singh Bhadoria7Tarit Roychowdhury8School of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaAgricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur 721302, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, IndiaAgricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur 721302, IndiaSchool of Environmental Studies, Jadavpur University, Kolkata 700032, India; Corresponding author.The intolerable levels of arsenic (As) in groundwater and its application in rice cultivation are continuously affecting the rice production in Ganga-Meghna-Brahmaputra (GMB) plain. The reduced germination and plant growth rates under excessive As stress ultimately lead to lower yield. To mitigate this concerning issue, the present study was carried out to evaluate the potential of K-humate priming on seed germination and plant growth under As stress. Seeds were primed with 100 mg/l K-humate for 12 h prior to germination. The germination percentages in unprimed seeds were 65 ± 5.0% and 58.3 ± 7.6% under stress level of 50 μM AsV and 50 μM AsIII, respectively. However, germination percentage in K-humate primed seeds were 75 ± 5.0% and 68.3 ± 2.9% under AsV and AsIII stress, respectively. The vigour index I (VG I) and vigour index II (VG II) recorded on 12 DAS (days after seeding) were also increased by 1.47 and 1.51 fold, respectively with K-humate supplementation under As stress. Detrimental effects of AsIII on seed germination, seedling growth and other physiological parameters were more suppressive than AsV. Application of K-humate not only improved seed germination, seedling growth and nutrient uptake but also decreased the oxidative stress markers and antioxidant activities by minimizing As uptake and translocation in the seedlings.http://www.sciencedirect.com/science/article/pii/S0147651321004243RiceArsenic stressK-humatePrimingGerminationOxidative stress |
| spellingShingle | Deepanjan Mridha Ishita Paul Ayan De Iravati Ray Antara Das Madhurima Joardar Nilanjana Roy Chowdhury Pratap Bhanu Singh Bhadoria Tarit Roychowdhury Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress Ecotoxicology and Environmental Safety Rice Arsenic stress K-humate Priming Germination Oxidative stress |
| title | Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress |
| title_full | Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress |
| title_fullStr | Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress |
| title_full_unstemmed | Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress |
| title_short | Rice seed (IR64) priming with potassium humate for improvement of seed germination, seedling growth and antioxidant defense system under arsenic stress |
| title_sort | rice seed ir64 priming with potassium humate for improvement of seed germination seedling growth and antioxidant defense system under arsenic stress |
| topic | Rice Arsenic stress K-humate Priming Germination Oxidative stress |
| url | http://www.sciencedirect.com/science/article/pii/S0147651321004243 |
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