Different susceptibility of runner bean plants to excess copper as a function of the growth stages of primary leaves

Maksymiec, Waldemar; Baszyński, Tadeusz

doi:10.1016/s0176-1617(96)80198-2

Cited by 53 publications

(37 citation statements)

References 21 publications

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“…Most R fd values were similar to the control, being insensitive to the MJ and metal doses, except for the highest metal content, which reassured us that the photosynthetic apparatus and Calvin cycle worked correctly, even where simultaneous reduction of fresh weight of shoots, leaf area, and water content was observed. Our results are in agreement with other findings (Maksymiec and Baszyński 1996b).…”

Section: Discussionsupporting

confidence: 94%

“…b)/car ratio could be explained by a greater inhibitory effect on Chl b than Chl a and induction of the senescence process after the longer MJ incubation, respectively. In general, photosynthetic pigments either decrease significantly after exposure to Cu (Maksymiec and Baszyński 1996b) or no effect is observed (Burzyński and _ Zurek 2007); however, we indicated that Cu increased Chl accumulation, which is in agreement with the results obtained at 80-lM Cu supplementation (Maksymiec and Baszyński 1996b) and 100-lM Cu treatment (Fatima et al 2011). In our research, MJ without metal supplementation did not alter the pigment content, although JA treatment can result not only in Chl reduction as a consequence of induction of the chlorophyllase gene (Tsuchiya et al 1999), but also in Rubisco subunit reduction (Rakwal and Komatsu 2000).…”

Section: Discussionsupporting

confidence: 91%

“…Moreover, the good condition of chloroplasts (membranes and granal structures) and the Cu supplementation-induced higher Chl content also detected by other scientists (Maksymiec and Baszyński 1996b;Fatima et al 2011) could be the explanation for the not severely affected chlorophyll fluorescence parameters.…”

Section: Discussionsupporting

confidence: 53%

“…Photosynthetic pigments can be used with success as dependable indicators to evaluate the level of metal stress due to inactivation of photosynthesis, which is combined with loss of chlorophyll contents (Maksymiec and Baszyński 1996b;Cambrollé et al 2013). Moreover, chlorophyll fluorescence has been employed in physiological and ecophysiological studies; since it is considered to be plant species-specific and is emitted only by fluorophores, such as chlorophyll a (Chl a), the fluorescence analysis is a useful tool for in vivo measurement of the stress level in plants (Maksymiec and Krupa 2002;Demmig-Adams et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…The effect of excess Cu on P. coccineus, a model dicotyledonous plant, has been thoroughly examined by Maksymiec and Baszyński (1996a, b). Moreover, the literature confirms that plant reaction to Cu is the growth stage-dependent, but limited amount of research was conducted in the early growth stage (Maksymiec and Baszyński 1996b). Additionally, the way of MJ action through the octadecenoic pathway in Cu stress still needs clarification (Maksymiec and Krupa 2002).…”

Section: Introductionmentioning

confidence: 99%

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The effect of methyl jasmonate on selected physiological parameters of copper-treated Phaseolus coccineus plants

2015

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Phaseolus coccineus plants in the early growth stage were preincubated with 10 -5 M methyl jasmonate (MJ) for 1 or 24 h and subsequently transferred to a Hoagland solution or treated with 50 or 100 lM copper (Cu). After 6-day exposure to the metal, plant growth, relative water content, electrolyte leakage, the content of Cu and photosynthetic pigments, and chlorophyll fluorescence parameters were assayed. Generally, under Cu excess, MJ did not modulate growth parameters such as leaf area, root growth, shoot and root fresh weight, and the shoot/root fresh weight ratio. The content of chlorophyll a, b, and carotenoids increased with the increasing Cu content in the leaves. However, a correlation between the reduction of the leaf area and the lower content of the three photosynthetic pigments for 24-h MJ ? 100-lM Cu treatment compared with metal alone was noted. The decrease in the Cu concentration was MJ-dependent only after 1-h MJ ? 50-lM Cu treatment in leaves and after 24-h MJ ? 100-lM Cu treatment in roots. Chlorophyll fluorescence was a weak indicator of the effect induced by MJ in Cu excess, and the most spectacular increase was observed for 1-h and 24-h MJ ? 50 lM Cu in the LNU and for 1-h MJ ? 50 lM Cu in the NPQ parameter. These results suggested a lack of a clear pattern for MJ altering the Cu stress in the runner bean plants. The most important finding was that photosynthesis seemed to be quite resistant to Cu stress and slight modifications in chlorophyll fluorescence were accompanied by significant changes in growth parameters, photosynthetic pigment content, and metal content in the plant. The results obtained may have been strongly related to the plant growth stage, as the measured parameters transform greatly during plant growth and development.

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Section: Discussionsupporting

confidence: 94%