Abstract
Drought has emerged as the deadliest abiotic stress that interferes with the physio-biochemical pathways in germinating seeds and growing plants severely damaging their germination, growth and final yield. It has become a major challenge for sustainable productivity of economically important and highly-demanded crops posing serious economic and food security issues. Considering ecotoxicity issues and the high impact of nanotechnology in agriculture, it is highly desirable to develop nanotech products with growth-promoting agents and stress emulating potential from natural antioxidants. Curcumin (Cur), a known polyphenol from Curcuma longa has a wide range of activities including exceptional antioxidant potential. The zinc oxide nanoparticles (ZnO NPs) have high growth-stimulating and antioxidant properties. This study reports the preparation of Cur-coated ZnO NPs as an ecofriendly nanopriming agent for the induction of drought tolerance in wheat seedlings. The control, nanoprimed (5, 10 and 15 ppm) and hydroprimed wheat seeds were germinated under normal and drought (osmotic potential of 15 % of PEG (-0.3 MPa)). Subsequently, the biochemical analyses and germination studies were performed using the established seedlings. The nanopriming induced significant increase in proteins, photosynthetic pigments and antioxidants (CAT, POD, APX and SOD) in seedlings under stress and normal conditions. They regulated the production of oxidants, controlled the osmoregulation and reduced malondialdehyde (MDA) ensuring the integrity of membranes as countermeasures of drought. The priming treatments positively influenced the germination parameters including germination index, germination energy and final germination by readjusting the biochemical pathways for mitigation of hazards of stress. The growth stimulatory effect of the prepared nanosystem caused a significant reduction in mean germination time. Thus, the priming-mediated memory imprints elicited resistance against drought at the germination and seedling development stage guaranteeing sustainable growth. • Nanopriming agent prepared from sustainable sources. • Climate smart nanopriming. • Nanopriming mediated memory imprints confer drought tolerance at seedling development stage. • Nanopriming ensures sustainable growth.
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Claims 6
Claim · model-written summary
Nanopriming significantly increased seedling proteins and photosynthetic pigments under stress and normal conditions.
- Taxon
- wheat
Triticum aestivume1 - Organ / stage
- seedlingse0
- Treatment
- nanopriminge0
- Outcome
- proteins, photosynthetic pigmentse0
- Direction
- increasee0
- Qualifier
- under stress and normal conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nanopriming induced significant increase in proteins, photosynthetic pigments and antioxidants (CAT, POD, APX and SOD) in seedlings under stress and normal conditions”
e1“wheat seedlings”
Claim · model-written summary
Nanopriming significantly increased antioxidant enzymes in seedlings.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- seedlingse0
- Treatment
- nanopriminge0
- Outcome
- antioxidants (CAT, POD, APX and SOD)e0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nanopriming induced significant increase in proteins, photosynthetic pigments and antioxidants (CAT, POD, APX and SOD) in seedlings under stress and normal conditions”
e1“wheat seedlings”
Claim · model-written summary
Nanopriming regulated oxidant production and osmoregulation and reduced malondialdehyde.
- Taxon
- wheatTriticum aestivume2
- Treatment
- nanopriminge1
- Outcome
- malondialdehyde (MDA)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They regulated the production of oxidants, controlled the osmoregulation and reduced malondialdehyde (MDA)”
e1“The nanopriming induced significant increase”
e2“wheat seedlings”
Claim · model-written summary
Priming improved germination index, energy and final germination.
- Taxon
- wheatTriticum aestivume1
- Treatment
- priming treatmentse0
- Outcome
- germination index, germination energy and final germinatione0
- Direction
- positively influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The priming treatments positively influenced the germination parameters including germination index, germination energy and final germination”
e1“wheat seeds”
Claim · model-written summary
The nanosystem significantly reduced mean germination time.
- Taxon
- wheatTriticum aestivume1
- Treatment
- prepared nanosysteme0
- Outcome
- mean germination timee0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth stimulatory effect of the prepared nanosystem caused a significant reduction in mean germination time”
e1“wheat seeds”
Claim · model-written summary
Priming-mediated effects conferred drought resistance at germination and seedling stages.
- Taxon
- wheatTriticum aestivume1
- Organ / stage
- germination and seedling development stagee0
- Treatment
- priming-mediated memory imprintse0
- Outcome
- resistance against droughte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming-mediated memory imprints elicited resistance against drought at the germination and seedling development stage”
e1“wheat seedlings”
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