Effects of Cadmium and Gibberellin on Growth and Photosynthesis of Glycine Max

Ghorbanli, M; Kaveh, Sabokroo; Sepehr, Mozhgan Farzami

doi:10.1023/a:1007135928024

Cited by 59 publications

(20 citation statements)

References 24 publications

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“…Values are the mean of nine replicates; vertical lines ahove bars indicate SE. For a given node, asterisks indicate that there was a significant difference from controls: one asterisk, P < 0.05; two asterisks, P < 0.01; three asterisks, P < 0.001. data concerning Cd impact on gibberellins remain scarce (Ghorhanii et al 1999;At¡cÍ et al 2003). An alternative explanation for the lower impact of Cd on main-stem growth could hv related to differences in Cd detoxification in different plant pans; Tukendorf et al (1997) actually demonstrated that the accumulation of homophytochelatins involved in Cd sequestration in Phaseollis rulgaris depended on the growth stage and that the capacitj' of homophytochelatin synthesis was much smaller in leaves appearing at later stages.…”

Section: Day 14mentioning

confidence: 99%

Structural Development, Water Status, Pigment Concentrations, and Oxidative Stress of Zygophyllum fabago Seedlings in Relation to Cadmium Distribution in the Shoot Organs

Lefèvre

Corréal

Faz-Cano

et al. 2009

International Journal of Plant Sciences

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Cadtnium is s toxic pollutant, hur the relationships hetween morphological modifications and Cd accumulation in different organs, as well as the physiological impact of accumulated Cd in leaves of different ages, remain an open question. We compared Cd concentration in the primary branches and main stems of the perennial shrub Zygophyllum fabago L. Six weeks of treatment with 10 /xM Cd inhibited stem elongation and axillary bud development, and Cd accumulated to a higher level in the oldest leaves on the main stem than in ramification leaves. Although ramifications always contained lower amounts of Cd than main-stem leaves, ramification leaves were more sensitive to the pollutant. While Cd accumulation induced stomatal closure, a decrease in carbon isotope discrimination, and an increase in the water use efficiency of main-stem leaves, an inverse trend was recorded for primary-branch leaves. Cadmium induced an increa.se in chlorophyll concentration in the main stem but decreased it in latera! branches. Bypass flow, quantified by tbe 8-hydroxy-l,3,6-pyrenetrisulfonic acid trisodium salt fluorescent dye, correlated significantly witb Cd accumulation in leaves, suggesting tbat it contributes to Cd translocation tbrough the transpiration stream. Our study demonstrates tbat Cd absorbed by the roots Is unevenly distributed in tbe shoot leaves. Accumulated toxic ion, however, is not the only factor conditioning the organ response; for example, the physiological status of the tissues in relation to tbe leaf ontogeny may direaly influence tbe extent of metabolic disorders resulting from Cd accumulation.

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Section: Day 14mentioning

confidence: 99%

Structural Development, Water Status, Pigment Concentrations, and Oxidative Stress of Zygophyllum fabago Seedlings in Relation to Cadmium Distribution in the Shoot Organs

Lefèvre

Corréal

Faz-Cano

et al. 2009

International Journal of Plant Sciences

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“…Several reports have documented the improved stress tolerance in plants exposed to heavy metal toxicity through increased photosynthetic activity with the application of Gas [ 50 , 167 , 168 ]. A detailed analysis of major photosynthetic parameters in sunflower plants exposed to high-Cu stress revealed that GA treatment increased energy trapping by PSII reaction centers and also increased the stability of the LHCII complex as well as P N , and Fv / Fm were significantly higher, indicating the photoprotective role of Gas [ 50 ].…”

Section: Psii Damage and Role Of Hormonesmentioning

confidence: 99%

“…A detailed analysis of major photosynthetic parameters in sunflower plants exposed to high-Cu stress revealed that GA treatment increased energy trapping by PSII reaction centers and also increased the stability of the LHCII complex as well as P N , and Fv / Fm were significantly higher, indicating the photoprotective role of Gas [ 50 ]. The addition of GA 3 to a nutrient solution containing Cd that was used for growing Glycine max plants alleviated the growth-inhibitory effects of Cd stress, which was evident with improved plant growth rate, net CO 2 assimilation rate, and increased chlorophyll content, indicating the role of GAs in improved photosynthesis [ 167 ]. It must be noted that Cd toxicity is believed to be associated with altered stomatal density, photosynthetic oxygen evolution, and ultrastructural changes in thylakoids [ 169 , 170 ].…”

Section: Psii Damage and Role Of Hormonesmentioning

confidence: 99%

Current Understanding of the Interplay between Phytohormones and Photosynthesis under Environmental Stress

Gururani

Mohanta

Bae

2015

IJMS

113

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Abiotic stress accounts for huge crop losses every year across the globe. In plants, the photosynthetic machinery gets severely damaged at various levels due to adverse environmental conditions. Moreover, the reactive oxygen species (ROS) generated as a result of stress further promote the photosynthetic damage by inhibiting the repair system of photosystem II. Earlier studies have suggested that phytohormones are not only required for plant growth and development, but they also play a pivotal role in regulating plants’ responses to different abiotic stress conditions. Although, phytohormones have been studied in great detail in the past, their influence on the photosynthetic machinery under abiotic stress has not been studied. One of the major factors that limits researchers fromelucidating the precise roles of phytohormones is the highly complex nature of hormonal crosstalk in plants. Another factor that needs to be elucidated is the method used for assessing photosynthetic damage in plants that are subjected to abiotic stress. Here, we review the current understanding on the role of phytohormones in the photosynthetic machinery under various abiotic stress conditions and discuss the potential areas for further research.

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“…[14] The accumulation of oxidized proteins and lipid peroxides, induced by Cd exposure, was observed in pea. [15] Toxic effects of Cd have been documented in many plants, such as Pisum sativum, [16] Allium cepa, [17] Hordeum vulgare, [18] Arabidopsis thaliana, [19] Glycine max, [20] Vicia faba, [21] Zea mays, [22] Nicotiana tabacum, [23] Allium sativum, [21] Thlaspi caerulescens, [24] Silene vulgaris, [25] Salix sp. [26] and Tradescantia sp.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Cd-induced genotoxic damage inUrtica piluliferaL. using RAPD-PCR analysis

Doğan

Özyiğit

Tombuloğlu

et al. 2015

Biotechnology & Biotechnological Equipment

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Plants can be used as biological indicators in assessing the damage done by bioaccumulation of heavy metals and their negative impact on the environment. In the present research, Roman nettle (Urtica pilulifera L.) was employed as a bioindicator for cadmium (Cd) pollution. The comparisons between unexposed and exposed plant samples revealed inhibition of the root growth (»25.96% and »45.92% after treatment with 100 and 200 mmol/L Cd concentrations, respectively), reduction in the total soluble protein quantities (»53.92% and »66.29% after treatment with 100 and 200 mmol/L Cd concentrations, respectively) and a gradual genomic instability when the Cd concentrations were increased. The results indicated that alterations in randomly amplified polymorphic DNA (RAPD) profiles, following the Cd treatments, included normal band losses and emergence of new bands, when compared to the controls. Also, the obtained data from F1 plants, utilized for analysis of genotoxicity, revealed that DNA alterations, occurring in parent plants due to Cd pollution, were transmitted to the next generation.

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Effects of Cadmium and Gibberellin on Growth and Photosynthesis of Glycine Max

Cited by 59 publications

References 24 publications

Structural Development, Water Status, Pigment Concentrations, and Oxidative Stress of Zygophyllum fabago Seedlings in Relation to Cadmium Distribution in the Shoot Organs

Structural Development, Water Status, Pigment Concentrations, and Oxidative Stress of Zygophyllum fabago Seedlings in Relation to Cadmium Distribution in the Shoot Organs

Current Understanding of the Interplay between Phytohormones and Photosynthesis under Environmental Stress

Assessment of Cd-induced genotoxic damage inUrtica piluliferaL. using RAPD-PCR analysis

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