Title: Effect of pretreatment with methyl jasmonate on the response of Pisum sativum to salt stress
Abstract: 10-day-old pea seedlings (Pisum sativum L. cv. Ran 1) were supplied with 10−5M methyl jasmonate for 3 days before salinization with 30 mmol/L NaCl for 3 and 6 days. Salt stress resulted in an increase of free proline content, CO2 compensation concentration (Γ), photorespiration (RP), stomatal resistance (rS), and activity of glycolate oxidase (GO) and phosphoglycolate phosphatase (PGP). Net photosynthetic rate (PN), transpiration (E), protein content and relative water content (RWC) were decreased. Pretreatment with methyl jasmonate helps the plants to counteract the salt stress or for adaptation to it. PN, RWC and protein content of these seedlings were higher in comparison to NaCl-treated seedlings. Exogenously supplied jasmonate itself plays the role of a stressor that causes typical stress responses — accumulation of free proline, high RP and Γ. Pretreatment with methyl jasmonate leads to a decrease of Na+ and Cl− accumulation in the shoot. This protection is discussed with respect to involvement of methyl jasmonate in osmoregulation or osmoprotection based on increased proline accumulation and decreased ion accumulation.
Publication Year: 1997
Publication Date: 1997-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 43
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