Methyl Jasmonate and Transpiration in Barley

Horton, Roger F.

doi:10.1104/pp.96.4.1376

Cited by 36 publications

(20 citation statements)

References 8 publications

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“…Similar results were obtained in other monocot and dicot species by Ueda et al (1981), Popova et al (1988), Herrmann et al (1989), Maslenkova et al (1990), Parthier (1990), and Koda (1992). Some authors pointed out that the concentrations of JAs used (in the range of 10 −5 to 10 −3 M) might act as a toxic factor (Horton 1991, Tizio 1996.…”

Section: Resultssupporting

confidence: 59%

Senescence of Flag Leaves and Ears of Wheat Hastened by Methyl Jasmonate

Beltrano

Ronco

Montaldi

et al. 1998

J Plant Growth Regul

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Treatment of flag leaves and ears of wheat plants with MJ (jasmonic acid methylester) (10 −5 and 10 −4 M) did not increase ethylene production, but it did accelerate senescence as indicated by the loss of chlorophyll. MJ also caused the closure of stomata, and consequently the rates of transpiration and photosynthesis decreased. Early maturity shortened the grain filling period, so the thousand grain weight was lower. Although ethylene elicited the same physiologic effects, the syndrome of senescence by MJ is independent of the former. We conclude that senescence and death in wheat are far from being elucidated; however, MJ and ethylene seem to participate in the phenomenon.

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Section: Resultssupporting

confidence: 59%

Senescence of Flag Leaves and Ears of Wheat Hastened by Methyl Jasmonate

Beltrano

Ronco

Montaldi

et al. 1998

J Plant Growth Regul

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“…This also agrees with the studies of Hristova and Popova (2002), who observed a decline in the photosynthesis of barley leaves, but it is in contrast to the findings of Suhita et al (2003). The transpiration rate of soybean plants submitted to MJ treatment exhibited slight reduction as reported previously in barley (Horton, 1991). These results suggested that, MJ is the key component for the observed inhibition in drought-stressed soybean plants.…”

Section: Discussionsupporting

confidence: 92%

Effect of exogenous methyl jasmonate on growth, gas exchange and chlorophyll contents of soybean subjected to drought

Anjum¹,

Xie²,

Farooq³

et al. 2011

Afr. J. Biotechnol.

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Drought is considered as one of the major constraints to crop production worldwide. Methyl jasmonate (MJ) is a plant-signaling molecule that elicits a wide variety of plant responses ranging from morphological to molecular level. A pot-culture study was undertaken to investigate the possible role of MJ-treatment on growth, gas exchange and chlorophyll contents in soybean (Glycine max L. Merrill.) plants subjected to water stress. The soybean plants were grown under normal water supply conditions till blooming and were then subjected to moisture stress by withholding water followed by foliar application of MJ at the rate of 50 µM. Drought stress severely hampered the growth, leaf gas-exchange attributes as well as the photosynthetic pigment contents. It was evident from the experimental results that, MJ-treatment led to further impairment in growth by inhibiting the leaf gas exchange attributes and chlorophyll contents. It is worth noted that, MJ-treatment also hampered the performance of soybean crop under well-watered conditions. In all, MJ-treatment appeared to arrest the growth, impaired leaf gas-exchange attributes and caused the loss of chlorophyll contents of soybean plants under water deficit conditions.

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“…Jasmonate-induced stimulation of stomatal closure has been suggested as an important factor in the senescenceaccelerating activity of these compounds (Satler andThimann 1981, Raghavendra andReddy 1987). However, according to Horton (1991), JA-ME has been effective in stomatal closure only at high concentrations, when a closure could be ascribed to an irreversible toxic effect of the JA-related compounds.…”

Section: 5-biphosphate Carboxylasementioning

confidence: 99%

Effect of jasmonic acid on the stomatal and nonstomatal limitation of leaf photosynthesis in barley leaves

Metodiev

Tsonev

Попова

1996

J Plant Growth Regul

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The effect of long-term (7 days) and shortterm (up to 2 h) treatment of barley plants with jasmonic acid (JA) on the components contributing to stomatal and nonstomatal limitation of photosynthesis was studied. Net CO 2 assimilation rate (A) responses to intercellular CO2 concentration (Ci), i.e., A/C,. curves, were used to assess the photosynthetic ability. Long-term treatment of barley plants with JA led to a noticeable decrease in both the initial slope of the A/C i curves and the maximum A at saturating Ci. The proportion of stomatal and nonstomatal factors in limitation of photosynthesis depended on the applied JA concentration. Short-term treatment with JA affected neither the stomatal conductivity for CO2 nor the rate of photosynthetic CO 2 assimilation. We suggest that JA may affect photosynthesis indirectly, either as a stress-modulating substance, or through the alterations in gene expression.

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Methyl Jasmonate and Transpiration in Barley

Abstract: Transpirational water loss from barley (Hordeum vulgare L. var

Cited by 36 publications

References 8 publications

Senescence of Flag Leaves and Ears of Wheat Hastened by Methyl Jasmonate

Senescence of Flag Leaves and Ears of Wheat Hastened by Methyl Jasmonate

Effect of exogenous methyl jasmonate on growth, gas exchange and chlorophyll contents of soybean subjected to drought

Effect of jasmonic acid on the stomatal and nonstomatal limitation of leaf photosynthesis in barley leaves

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