Canonical Analysis Applied to Multivariate Analysis of Variance

Lejeune, Michel; Caliński, Tadeusz

doi:10.1006/jmva.1999.1852

Cited by 34 publications

(21 citation statements)

References 12 publications

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“…Statistical analysis were carried out using the statistical analysis software, Statistica (version 8.0, StatSoft Tulsa, USA). The data was also analysed using canonical variate analysis (CVA) (Lejeune and Caliński 2000;Kayzer et al 2009;Budka et al 2011), a form of multivariate analysis, to estimate the similarity between the nine studied isolates belonging to three different species using Bliss transformed data of the percentages of cells with O 2 − , iron ions and double reaction of H 2 O 2 with iron ions through all used inhibitors. The method of CVA, similar to principal component analysis, was chosen because considering data sets coming from the multidimensional experimental structure (besides replicates for isolates the other source of variation are taken into consideration, such as time after inoculation, inhibitors and interactions).…”

Section: Discussionmentioning

confidence: 99%

The origin of reactive oxygen during interaction of Pinus sylvestris root and Heterobasidion annosum s.l. – the linkage with the iron

et al. 2015

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Reactive oxygen species (ROS) can be promoted differently, although iron is regarded as a condicio sine qua of their generation. We assessed how enzymes involved in ROS production and iron accumulation impact the interactions between Pinus sylvestris root and p at ho g e ns w i t h di ff e r e n t ho s t pr ef e r e n ce s (Heterobasidion annosum sensu stricto, H. parviporum and H. abietinum). Studies with inhibitors of ROS generation showed that diphenylene iodonium (DPI) and potassium cyanide (KCN) decreased the mortality of P. sylvestris root cells when exposed to H. parviporum in the elongation zone. In the meristematic zone, inhibited production of NADPH oxidase and oxalic acid decreased mortality of host root cells challenged with H. parviporum or H. abietinum. In the meristematic zone, iron immobilization with desferoxamine (DFO), inhibited percentage of dead host cells exposed to H. annosum s.s. Scots pine inoculation with high compatible H. annosum s.s., irrespectively in the root zone, led to an accumulation of superoxides (O 2 − ) and a colocalisation of H 2 O 2 with ferric or ferrous ions involved in production of the most harmful ROS -hydroxyl radicals at 4 h. After 48 h of mutual interaction between P. sylvestris and H. annousum s.s, a similar pattern as at 4 h was found in the root meristematic zone. We also showed that O 2 − accumulation in the P. sylvestris -H. annosum s.s. pathosystem was not NADPH oxidase dependent. During the interaction of P. sylvestris and H. annosum s.s., colocalisation of H 2 O 2 with Fe 2+ and Fe 3+ decreased by disturbing ROS production; this pattern was less apparent when H. parviporum or H. abietinum were identified as the invader. Our work implies that different mechanisms related to plant cell death can operate in both the root elongation and meristematic zone of P. sylvestris colonized with H. annosum s.s. pathosystem.

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Section: Discussionmentioning

confidence: 99%

The origin of reactive oxygen during interaction of Pinus sylvestris root and Heterobasidion annosum s.l. – the linkage with the iron

et al. 2015

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“…The macro-and microelement content of tomato leaves was analyzed using canonical multivariate analysis (Lejeune and Caliński, 2000). As in principal component analysis, it entails transformation of the original set of variables into a set of new variables carrying similar information but distributed in a multivariate Euclidean space (Kayzer et al, 2009;Budka et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Relations Between Mn Concentration and Yield, Nutrient, Water Status, and Gas Exchange Parameters of Tomato

Kleiber¹,

Borowiak²,

Budka³

et al. 2015

Acta Biologica Cracoviensia S. Botanica

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Nutrition is one of the most important factors influencing quantitative and qualitative plant yield. This study examined the effect of manganese (Mn) in nutrient solution on photosynthetic activity parameters, and the relations between photosynthetic activity parameters, yield and plant nutrient status in tomato (Solanum lycopersicum L.). Mn supplementation significantly modified the nutrient content of leaves. Macronutrient content varied less than micronutrient content. The optimal Mn concentration differed between the studied cultivars. Both Mn deficit and Mn excess caused a decrease of tomato yield. Gas exchange parameters, relative water content (RWC) and specific leaf area (SLA) were measured in fully expanded tomato leaves. Certain levels of Mn were found to be needed for proper plant function and future yield, and toxic effects of excess Mn were noted. Changes in P N (net photosynthetic rate) were found to be the first signal of plant response to higher Mn supply, while yield was as for optimal Mn concentrations. Under Mn treatment, uptake of some nutrients increased. A higher level of absorbed Mg led to a higher photosynthesis rate and increased stomatal opening. P N and g s (stomatal conductance) also increased, while C i (intercellular CO 2 concentration) decreased, indicating proper CO 2 consumption during the assimilation process.K Ke ey y w wo or rd ds s: : Macroelement, microelement, Solanum lycopersicum L., photosynthetic activity, manganese stress.

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“…In this study, an improved spectral transformation procedure called canonical analysis [41] was used for the generation of transformed spectral features, in which the group separation is optimized. Using this procedure, a new axis can be constructed for which  is the standard deviations within the groups) is as large as possible, and thus the largest possibility will be generated to discriminate injured leaves from healthy ones.…”

Section: Feature Extraction Proceduresmentioning

confidence: 99%

Early Detection of Crop Injury from Glyphosate on Soybean and Cotton Using Plant Leaf Hyperspectral Data

et al. 2014

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Abstract:In this paper, we aim to detect crop injury from glyphosate, a herbicide, by both traditionally used spectral indices and newly extracted features with leaf hyperspectral reflectance data for non-Glyphosate-Resistant (non-GR) soybean and non-GR cotton. The new features were extracted by canonical analysis technique, which could provide the largest separability to distinguish the injured leaves from the healthy ones. Spectral bands used for constructing these new features were selected based on the sensitivity analysis results of a physically-based leaf radiation transfer model (leaf optical PROperty SPECTra model, PROSPECT), which could help extend the effectiveness of these features to a wide range of leaf structures and growing conditions. This approach has been validated with greenhouse measured data acquired in glyphosate treatment experiments. Results indicated that glyphosate injury could be detected by NDVI (Normalized Difference Vegetation Index), RVI (Ratio Vegetation Index), SAVI (Soil Adjusted Vegetation Index), and DVI (Difference Vegetation Index) in 48 h After the Treatment (HAT) for soybean and in 72 HAT for cotton, but the other spectral indices either showed little use for separation, or did not show consistent separation for healthy and injured soybean and cotton. Compared with the traditional spectral indices, the new features were more feasible for the early detection of glyphosate injury, with leaves sprayed with a higher rate of glyphosate OPEN ACCESSRemote Sens. 2014, 6 1539 solution having larger feature values. This trend became more and more pronounced with time. Leaves sprayed with different glyphosate rates showed some separability 24 HAT using the new features and could be totally distinguished at and beyond 48 HAT for both soybean and cotton. These findings demonstrated the feasibility of applying leaf hyperspectral reflectance measurements for the early detection of glyphosate injury using these newly proposed features.

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Canonical Analysis Applied to Multivariate Analysis of Variance

Cited by 34 publications

References 12 publications

The origin of reactive oxygen during interaction of Pinus sylvestris root and Heterobasidion annosum s.l. – the linkage with the iron

The origin of reactive oxygen during interaction of Pinus sylvestris root and Heterobasidion annosum s.l. – the linkage with the iron

Relations Between Mn Concentration and Yield, Nutrient, Water Status, and Gas Exchange Parameters of Tomato

Early Detection of Crop Injury from Glyphosate on Soybean and Cotton Using Plant Leaf Hyperspectral Data

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