Leaf optical properties are affected by the location and type of deposited biominerals

Klančnik, Katja; Vogel‐Mikuš, Katarina; Kelemen, Mitja; Vavpetič, Primož; Pelicon, Primož; Kump, P.; Jezeršek, David; Gianoncelli, Alessandra; Gaberščik, Alenka

doi:10.1016/j.jphotobiol.2014.08.010

Cited by 32 publications

(22 citation statements)

References 62 publications

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“…and Carex elata All. (Klančnik et al ., ). Investigation of influences of leaf position on leaf anatomy and surface characteristics (e.g.…”

Section: Discussionmentioning

confidence: 97%

“…() reported the influence of lamina thickness and water content on leaf optical properties in five woody species. Leaf optical properties could also be affected by the concentration, location and type of biominerals (Klančnik et al ., ,b). Calcium concentration has been reported to affect the reflectance, and Si, Mg and Ca transmittance in leaves of Phragmites australis (Cav.)…”

Section: Discussionmentioning

confidence: 99%

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Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Upadhyaya

2017

Weed Research

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SummaryLeaf optical properties can play an important role in determining the red/far-red light ratio, a signal of impending competition, in plant canopies. Knowledge of leaf optical properties and factors affecting them is important in understanding of the impacts of red/farred ratio in agroecosystems. Effects of leaf position on the plant stem on their optical properties at 660 and 730 nm were studied in tomato and two weeds Chenopodium album and Amaranthus retroflexus. Leaf position on stem strongly influenced leaf optical properties. Reflectance and transmittance were generally lower for the C. album and A. retroflexus leaves at higher positions on the stem, except for reflectance at 730 nm in C. album, which did not change. Reflectance was not affected in tomato. Transmittance generally decreased for leaves at higher positions. Red/far-red ratios of reflected (R ratio ) and transmitted (T ratio ) light generally decreased in all species, except R ratio in tomato, where it increased slightly at higher positions. These effects were greater in A. retroflexus compared with C. album and tomato. Changes in these ratios were partly explained by chlorophyll content and leaf mass per area. The results show that leaf position on plant stem influences leaf optical properties in tomato and two weeds and this effect differed between species. These influences and the differences among species could modify red/far-red ratios in canopies comprising these species, which could influence their growth and inter-plant interactions.

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“…and Carex elata All. (Klančnik et al ., ). Investigation of influences of leaf position on leaf anatomy and surface characteristics (e.g.…”

Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Upadhyaya

2017

Weed Research

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“…Accordingly, strong positive correlation between plant-available Si in the soil and leaf Ca content was obtained in the present study, while no direct correlation was found between leaf Si and Ca content. Some other studies showeda negative correlation between these two elements (Klančnik et al 2014b, Golob et al 2017. Brackhage et al (2013) reported about a decrease in Ca content at high Si availability by replacing Ca as a structural element with the more energyefficient Si in order to avoid Ca stress.…”

Section: Discussionmentioning

confidence: 99%

Do soil and leaf silicon content affect leaf functional traits in Deschampsia caespitosa from different habitats?

Grašič¹,

Sakovič²,

Abram³

et al. 2020

Biologia plant.

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The purpose of this study was to show the extent of phenotypic plasticity of the grass Deschampsia caespitosa from four habitats with different soil properties by comparing selected leaf traits and content of silicon and other elements. Morphological, biochemical, and optical properties were examined in leaves, but content of silicon and other elements also in soil samples. Plant-available silicon in the soil was determined following extraction in CaCl2. Bulk element analysis was conducted using X-ray fluorescence spectrometry. The habitats of D. caespitosa differed significantly according to soil structure, which resulted in significantly different leaf traits, including leaf optical properties and content of minerals. There was no correlation between leaf silicon and plant-available or total soil silicon, while positive correlation was seen between leaf calcium and total soil calcium. In addition, plant-available silicon showed strong positive correlation with leaf calcium and phosphorus. The majority of D. caespitosa leaf and soil properties differed significantly among habitats.

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“…The validation set presents significant bias whereas calibration ones equals zero. Variables selected in our study are very small for calcium model (6 variables Klančnik et al [61] has shown that reflectance spectra were significantly affected by the Ca concentrations which were mostly accumulated in the mesophyll, and particularly in the areas of the vascular bundles. In this case, our study confirms but much better precises the relations between Ca content and most sensitive reflectance bands located in 649 -654 nm range.…”

Section: Okra Best Phenologic Stage For Fruits Yield Predictionmentioning

confidence: 99%

Use of Fluorescence and Reflectance Spectra for Predicting Okra (<i>Abelmoschus esculentus</i>) Yield and Macronutrient Contents of Leaves

Dibi¹,

Bosson²,

Zobi³

et al. 2017

OJAppS

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In-field proximal sensing of most major crops nutrients still remains an economical and technical challenge. For this purpose, the use of effective multi-excitation fluorescence and reflectance wavelengths is explored in this work on Okra plant. Visible-near infrared (400 -1000 nm) reflectance and multi-fluorescence data were collected at leaf scale in a chemically fertilized field by using an USB spectrometer mounted with an Arduino-based LED driver clip. N, P, K and Ca content of samples leaves were measured using reference methods. Average pods yield and leaves macronutrients content were calibrated using IRIV-PLS regression after spectra pretreatments. Single informative wavelengths bands in reflectance, red and far-red fluorescences were selected for building yield and macronutrient content models. We showed that flowering stage was more suitable for yield prediction. Moderately useful macronutrient models were found in Ca content (RPD val = 1.93, r P = 0.818) and potassium content with RPD val = 1.8, r P = 0.88. P and N yielding prediction performance of RPD val = 1.61 (r P = 0.718 ) and RPD val = 1.46 (r P = 0.56) respectively were less accurate. This study demonstrates potentiality of fluorescence and reflectance spectroscopy for accurate estimation of leaf macronutrient content and crop yield. High selectivity obtained from resulted spectral bands could lead to the development of reliable, rapid and cost-effective devices for nutrient diagnosis.

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Leaf optical properties are affected by the location and type of deposited biominerals

Cited by 32 publications

References 62 publications

Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Do soil and leaf silicon content affect leaf functional traits in Deschampsia caespitosa from different habitats?

Use of Fluorescence and Reflectance Spectra for Predicting Okra (<i>Abelmoschus esculentus</i>) Yield and Macronutrient Contents of Leaves

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Leaf optical properties are affected by the location and type of deposited biominerals

Cited by 32 publications

References 62 publications

Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Effects of leaf position on reflectance, transmittance and absorption of red and far‐red light in tomato, Chenopodium album and Amaranthus retroflexus leaves

Do soil and leaf silicon content affect leaf functional traits in Deschampsia caespitosa from different habitats?

Use of Fluorescence and Reflectance Spectra for Predicting Okra (&lt;i&gt;Abelmoschus esculentus&lt;/i&gt;) Yield and Macronutrient Contents of Leaves

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Product

Resources

About

Use of Fluorescence and Reflectance Spectra for Predicting Okra (<i>Abelmoschus esculentus</i>) Yield and Macronutrient Contents of Leaves