12/1/2023 0 Comments Sugar maple leaf imagesData can also be accessed via the following links. ![]() This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.ĭata Availability: Data have been deposited to the La Trobe institutional repository. Received: MaAccepted: Published: July 8, 2016Ĭopyright: © 2016 Fernando et al. PLoS ONE 11(7):Įditor: Fanis Missirlis, CINVESTAV-IPN, MEXICO This study concluded that foliar nutrient distribution in symplastic compartments is a determinant of Mn sensitivity, and that Mn stress hinders plant resistance to biotic stress.Ĭitation: Fernando DR, Marshall AT, Lynch JP (2016) Foliar Nutrient Distribution Patterns in Sympatric Maple Species Reflect Contrasting Sensitivity to Excess Manganese. Sugar maple trees on buffered non-acidified soil were less damaged by biotic stress compared to those on unbuffered acidified soil, where they are also affected by Mn toxicity abiotic stress. Although it was greatest overall in red maple, there was no difference in biotic stress damage to red maple leaves between acidified and non-acidified soils. For each species, leaf-surface damage due to biotic stress including insect herbivory was compared between sites with acidified and non-acidified soils. There was strong evidence that Mn toxicity in sugar maple is primarily a symplastic process. The known sensitivity of sugar maple to excess Mn is likely linked to Mg deficiency in the leaf mesophyll. Unusually, Mn was highly co-localised with Mg in mesophyll cells of red maple only. There were striking between-species differences in Mn, magnesium (Mg), sulphur (S) and calcium (Ca) distribution patterns. For both species, excess foliar Mn was deposited in symplastic cellular compartments. ![]() Here, electron-probe x-ray microanalysis was employed to examine cellular and sub-cellular deposition of excessively accumulated foliar Mn and other mineral nutrients in vivo. Currently there is no knowledge about the cellular sequestration of Mn and other nutrients in these two species. Both tree species are known to overaccumulate foliar manganese (Mn) when growing on unbuffered acidified soils, however, sugar maple is Mn-sensitive, while red maple is not. Plant abiotic stress effects including nutritional imbalance and manganese (Mn) toxicity are well documented within this system, and are implicated in enhanced susceptibility to biotic stresses such as insect attack. Sugar maple and red maple are closely-related co-occurring tree species significant to the North American forest biome.
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