Abstract
Salt stress adversely affects the growth and productivity of crops. However, reports suggest that the application of various micronutrients could help the plant to cope with this stress. Hence, the objective of the study was to examine the effect of exogenous application of Zinc (Zn) on salt tolerance in Vigna radiata (L.) Wilczek (mungbean). Mungbean is considered to be an economically important crop and possess a strategic position in Southeast Asian countries for sustainable crop production. It is rich in quality proteins, minerals and vitamins. Three weeks old grown seedlings were subjected to NaCl (150 mM and 200 mM) alone or with Zn (250 µM). After 21 days of treatment, plants were harvested for investigating morphological, physiological and biochemical changes. We found that the Zn application mitigates the negative effect upon plant growth to a variable extent. This may be attributed to the increased shoot and root length, improved chlorophyll and carotenoid contents, enhanced total soluble sugar (TSS), total soluble protein (TSP) and proline accumulation, decreased H2O2 content and increased enzymatic antioxidant activities. Zn’s application improved the performance of the enzymes such as phenylalanine ammonia-lyase (PAL) and tyrosine ammonia-lyase (TAL) of the secondary metabolism, which resulted in the improvement of total phenol and flavonoids. The antioxidant activities such as 1,1diphenyl 2-picryl hydrazine (DPPH) and ferrous reducing antioxidant power assay (FRAP) of the plants also showed improved results in their salt only treatments. Furthermore, hydrogen peroxide (H2O2) and superoxide radical (SOD) scavenging activity were also improved upon the application of 250 µM zinc. Thus, Zn application in low doses offers promising potential for recovering plants suffering from salinity stress. In conclusion, we assume that zinc application improved salt tolerance in mungbean through the improvement of various physiological and photochemical processes which could prove to be useful in nutrient mediated management for crop improvement.
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Claims 11
Claim · model-written summary
Zinc mitigated the negative effect of salt stress on plant growth to a variable extent.
- Taxon
- Vigna radiata (L.) Wilczek
.jpg?width=60)
Vigna radiatat0 - Treatment
- Zn applicatione0
- Outcome
- plant growthe0
- Direction
- mitigatese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the Zn application mitigates the negative effect upon plant growth to a variable extent”
t0“Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc increased shoot and root length under salt stress.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- shoot and root lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased shoot and root length”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc improved chlorophyll and carotenoid contents.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- chlorophyll and carotenoid contentse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved chlorophyll and carotenoid contents”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc enhanced total soluble sugar, protein and proline accumulation.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- total soluble sugar (TSS), total soluble protein (TSP) and proline accumulatione0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced total soluble sugar (TSS), total soluble protein (TSP) and proline accumulation”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc decreased hydrogen peroxide content.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- H2O2 contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased H2O2 content”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc increased enzymatic antioxidant activities.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- enzymatic antioxidant activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased enzymatic antioxidant activities”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc improved phenylalanine ammonia-lyase and tyrosine ammonia-lyase performance.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zn’s applicatione0
- Gene
- phenylalanine ammonia-lyase (PAL) and tyrosine ammonia-lyase (TAL)e0
- Outcome
- performance of the enzymese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn’s application improved the performance of the enzymes such as phenylalanine ammonia-lyase (PAL) and tyrosine ammonia-lyase (TAL)”
t0“Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc improved total phenol and flavonoids.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- total phenol and flavonoidse0
- Direction
- improvemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improvement of total phenol and flavonoids”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Plant DPPH and FRAP antioxidant activities improved relative to salt-only treatments.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- Zinct0
- Outcome
- antioxidant activitiese0
- Direction
- improvede0
- Comparator
- salt only treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The antioxidant activities such as 1,1diphenyl 2-picryl hydrazine (DPPH) and ferrous reducing antioxidant power assay (FRAP) of the plants also showed improved results in their salt only treatments”
t0“Zinc to Mitigate the Salt Stress in Vigna radiata (L.) Wilczek”
Claim · model-written summary
Zinc improved hydrogen peroxide and superoxide radical scavenging activity.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Treatment
- 250 µM zince0
- Outcome
- hydrogen peroxide (H2O2) and superoxide radical (SOD) scavenging activitye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hydrogen peroxide (H2O2) and superoxide radical (SOD) scavenging activity were also improved upon the application of 250 µM zinc”
t0“Vigna radiata (L.) Wilczek”
Claim · model-written summary
The authors propose low-dose zinc to recover plants under salinity stress.
- Taxon
- Vigna radiata (L.) WilczekVigna radiatat0
- Outcome
- Zn application in low dosese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zn application in low doses offers promising potential for recovering plants suffering from salinity stress”
t0“Vigna radiata (L.) Wilczek”
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