Effects of salicylic acid on growth and accumulation of phenolics in Zea mays L. under drought stress

The accumulation of total soluble and cell wall-bound phenolics and total soluble proteins in Zea mays plants exposed to drought stress and foliar spray of salicylic acid (SA) at 10 ⁻⁴ mol/L and 10 ⁻⁵ mol/L was investigated. Drought stress was imposed at the four-leaf stage for 10 days (30–35% field...

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Vydáno v:Acta agriculturae Scandinavica. Section B, Soil and plant science Ročník 66; číslo 4; s. 325 - 332
Hlavní autoři: Latif, Farzana, Ullah, Faizan, Mehmood, Sultan, Khattak, Adnan, Khan, Asif Ullah, Khan, Safiullah, Husain, Ishtiaq
Médium: Journal Article
Jazyk:angličtina
Vydáno: Abingdon Taylor & Francis 18.05.2016
Taylor & Francis LLC
Témata:
Abiotic stress
Accumulation
adverse effects
cell wall-bound phenolics
Corn
Dehydration
Drought
drought tolerance
Field capacity
foliar spraying
growth regulator
Leaves
Phenols
Plant growth
protein content
proteins
root growth
roots
salicylic acid
shoots
Spraying
Water content
water stress
Zea mays
ISSN:1651-1913, 0906-4710, 1651-1913
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Shrnutí:The accumulation of total soluble and cell wall-bound phenolics and total soluble proteins in Zea mays plants exposed to drought stress and foliar spray of salicylic acid (SA) at 10 ⁻⁴ mol/L and 10 ⁻⁵ mol/L was investigated. Drought stress was imposed at the four-leaf stage for 10 days (30–35% field capacity). Dehydration of maize leaves was accompanied by the accumulation of both total soluble and cell wall-bound phenolics, reduction in leaf relative water content (LRWC), and shoot and root growth attributes. Foliar spraying of SA further augmented the content of total soluble and cell wall-bound phenolics and total soluble proteins content under drought stress. SA ameliorated the adverse effects of drought stress on LRWC, shoot fresh weight, shoot dry weight, root fresh weight, root dry weight, root length and root area. The accumulation of both soluble and cell wall-bound phenolics by foliar spray of SA may be a mechanism related to SA-induced drought stress tolerance in maize. It was concluded that foliar spraying of SA at 10 ⁻⁵ mol/L can be highly economical and effective for modifying the effects of drought stress on maize at the four-leaf stage.
Bibliografie:http://dx.doi.org/10.1080/09064710.2015.1117133
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ISSN:1651-1913
0906-4710
1651-1913
DOI:10.1080/09064710.2015.1117133