Effects of manganese on the viability of vegetative diaspores of the epiphytic lichen Hypogymnia physodes

Hauck, Markus; Alexander, Priscilla; Mulack, Cordula; Fritz, Eberhard; Runge, Michael C.

doi:10.1016/s0098-8472(01)00121-6

Cited by 45 publications

(41 citation statements)

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“…Hauck et al (2001Hauck et al ( , 2002a found negative correlations between the cover of lichen species and the Mn content of Picea abies bark and stemflow. In culture experiments with soredia of Hypogymnia physodes, ambient Mn concentrations reduced their ability to grow, decreased the chlorophyll content, and caused structural damage in algal and fungal cells (Hauck et al 2002b). Thus, it is conceivable that the correlations found with Mn concentration in stemflow on Whiteface Mountains are causal.…”

Section: Discussionmentioning

confidence: 99%

Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry

Schmull¹,

Hauck²,

Vann³

et al. 2002

Can. J. Bot.

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Runge, M. (2002). Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry. Retrieved from http://repository.upenn.edu/ees_papers/1Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry AbstractEpiphytic lichen diversity in a dieback-affected forest of red spruce (Picea rubens Sarg.) and balsam fir (Abies balsamea (L.) Mill.) on Whiteface Mountain, New York, U.S.A., was higher on dead compared with living trees and on fir compared with spruce. Diversity differed more between living and dead spruce than between living and dead fir. Cover of all lichen species that occurred on more than 50% of the sample trees, except for two species, decreased with increasing mean concentration of NO Cover of all lichen species that occurred on more than 50% of the sample trees, except for two species, decreased with increasing mean concentration of NO 3 -in stemflow. Concentrations of NO 3 -were higher on living spruce compared with dead spruce and with living and dead fir. The negative correlations between lichen cover and NO 3 -concentration may reflect either a decrease of lichen abundance caused by toxic effects of higher NO 3 -concentrations or a removal of NO 3 -from stemflow by epiphytic lichens. Experimental exposure of Hypogymnia physodes to NaNO 3 reduced chlorophyll concentrations. This result, together with estimations of lichen and needle biomass, indicates that a dependence of lichen cover on NO 3 -concentrations in stemflow may be the cause for the negative correlations. The sulphur concentration in stemflow did not affect lichen abundance on Whiteface Mountain. The manganese concentration in stemflow may have an effect on single species.Key words: forest dieback, manganese, nitrate assimilation, nitrate toxicity, precipitation chemistry, sulphur.Résumé : Dans une forêt d'épinette (Picea rubens Sarg.) et de sapin (Abies balsamea (L.) Mill.) de la Whiteface Mountain, New York, E.U., affectée par un dépérissement, la diversité des lichens épiphytes est plus importante sur les arbres morts que sur les arbres vivants, et sur le sapin que sur l'épinette. La diversité est plus marquée entre les épinet-tes vivantes et mortes qu'entre les sapins vivants et morts. La couverture par l'ensemble des espèces de lichen qui se retrouvent sur de 50 % des arbres échantillonnés, sauf pour deux espèces, diminue avec l'augmentation moyenne de la teneur en NO 3 -dans le lessivat de l'arbre. Les teneurs en NO 3 --sont plus élevées sur l'épinette vivante que sur l'épinette morte, et sur le sapin vivant que sur le sapin mort. Les corrélations négatives entre la couverture lichénique et la teneur en NO 3 -pourraient refléter soit une diminution de l'abondance des lichens causée par les effets toxiques des hautes teneurs en NO 3 -ou soit une élimination du NO 3 -du lessivat de l'arbre par les lichens épiphytes. Une exposition expérimentale de l'Hypogymnia phys...

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Section: Discussionmentioning

confidence: 99%

Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry

Schmull¹,

Hauck²,

Vann³

et al. 2002

Can. J. Bot.

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“…As Mn is essential micronutrients imported actively in the chloroplasts, participating in the structure of different photosynthetic proteins and enzymes, the excess of Mn seems to be particularly damaging to chloroplasts. Some studies have indicated that excess Mn causes deficiency of Fe, Mg and Ca [11,12] and induces inhibition of chlorophyll biosynthesis and a decline in the photosynthetic rate [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Hypoxia Stress and Different Level of Mn2+ on Antioxidant Enzyme of Tomato Seedlings

Liu¹,

Chen²,

Mi³

et al. 2010

AJPS

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“…The cellular concentration of Mn 2+ needs to be finely controlled. Any change away from the threshold level can lead to toxic or deficiency effects (Lidon and Teixeira, 2000, Henriques, 2003, Boojar and Goodarzi, 2008, Hauck et al, 2002, Hauck et al, 2003, Lei et al, 2007.…”

Section: Introductionmentioning

confidence: 99%

Influence of Manganese Deficiency on Metal Ion Uptake, Antioxidant Defense Mechanism and Lipid Peroxidation Levels in Mentha Piperita Leaves

Candan¹,

Tarhan²

2011

Acta Biologica Cracoviensia Series Botanica

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We investigated the antioxidant defense mechanism, metal uptake and lipid peroxidation (LPO) levels at different leaf positions in Mentha piperita L. grown in Mn 2+ -deficient and control conditions. Under manganese deficiency the activity of superoxide dismutase (SOD), catalase (CAT) and guaiacol peroxidase (GuaPOX) and the content of ascorbate, chlorophyll, and carotenoid under Mn 2+ deficiency were significantly lower than in the control for all leaf positions. SOD activity correlated positively with Mn 2+ uptake. Fe 2+ uptake was inhibited by Mn 2+ deficiency. During early stages of Mn 2+ deficiency, M. piperita leaves showed relatively more antioxidant activity and lower LPO. Towards the final stages of the treatment period, comparatively lower SOD, CAT and GuaPOX activity and higher LPO levels accelerated the senescence process.K Ke ey y w wo or rd ds s: : Antioxidant defense system, lipid peroxidation, Mentha piperita, Mn 2+ deficiency, metal uptake.

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Effects of manganese on the viability of vegetative diaspores of the epiphytic lichen Hypogymnia physodes

Cited by 45 publications

References 48 publications

Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry

Site factors determining epiphytic lichen distribution in a dieback-affected spruce-fir forest on Whiteface Mountain, New York: stemflow chemistry

Effects of Hypoxia Stress and Different Level of Mn2+ on Antioxidant Enzyme of Tomato Seedlings

Influence of Manganese Deficiency on Metal Ion Uptake, Antioxidant Defense Mechanism and Lipid Peroxidation Levels in Mentha Piperita Leaves

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