Abstract
Exogenous application of potential osmoprotectants such as proline is an important shotgun approach to alleviate adverse effects of abiotic stresses on plants. However, information about the effects of exogenously applied proline in counteracting the adverse effects of water stress on crops is scanty. An experiment was therefore conducted to assess the ameliorative effect of exogenously applied proline on growth and photosynthetic capacity of two maize cultivars grown under water deficit conditions. Four-week old plants of 2 maize cultivars, viz., EV-1098 and AGAITI 2002 were subjected to water stress by maintaining moisture content equivalent to 60% field capacity. Different concentrations of proline applied as a foliar spray at the seedling, vegetative and seedling+vegetative stages were: no spray, 0.1% Tween-20 solution, 30 and 60 mM proline in 0.1% Tween 20 solution. Water stress reduced growth and photosynthetic capacity of both maize cultivars. However, exogenous application of proline counteracted the adverse effects of water stress on growth of both maize cultivars. Although proline induced improvement in growth of water stressed maize plants was almost similar at all growth stages, application of 30 mM proline proved to be more effective in inducing water stress tolerance as compared to the other level. Photosynthetic rate of water stressed plants of both maize cultivars was also enhanced due to foliar applied proline which was positively associated with sub-stomatal CO2 (Cv) and stomatal conductance (gs) as well as photosynthetic pigments. Overall, foliar applied proline ameliorated the adverse effects of water stress on growth and photosynthetic capacity of two maize cultivars.
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Claims 7
Claim · model-written summary
Water stress reduced growth in both maize cultivars.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress reduced growth and photosynthetic capacity of both maize cultivars.”
Claim · model-written summary
Water stress reduced photosynthetic capacity in both maize cultivars.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water stress reduced growth and photosynthetic capacity of both maize cultivars.”
Claim · model-written summary
Proline application counteracted adverse water stress effects on maize growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous application of proline counteracted the adverse effects of water stress on growth of both maize cultivars.”
Claim · model-written summary
Growth improvement from proline was nearly similar at all growth stages.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“proline induced improvement in growth of water stressed maize plants was almost similar at all growth stages”
Claim · model-written summary
The 30 mM proline treatment was more effective at inducing water stress tolerance than the other level.
- Treatment
- 30 mM prolinee0
- Outcome
- water stress tolerancee0
- Direction
- more effectivee0
- Comparator
- the other levele0
Not reportedTaxon
Verbatim
e0“application of 30 mM proline proved to be more effective in inducing water stress tolerance as compared to the other level.”
Claim · model-written summary
Foliar proline enhanced photosynthetic rate in both water-stressed maize cultivars.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate of water stressed plants of both maize cultivars was also enhanced due to foliar applied proline”
Claim · model-written summary
Photosynthetic rate was positively associated with sub-stomatal CO2, stomatal conductance, and pigments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthetic rate of water stressed plants of both maize cultivars was also enhanced due to foliar applied proline which was positively associated with sub-stomatal CO2 (Cv) and stomatal conductance (gs) as well as photosynthetic pigments.”
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