Special issue in honour of Prof. Reto J. Strasser - JIP-test as a tool for early detection of the macronutrients deficiency in Miscanthus plants

Abstract

The optimization of cultivation process and improving the yield of perspective energy crops in Europe could be one of the ways to overcome the problem of limited amount of conventional fuel. The aim of this work was to check if the use of JIP-test, as a noninvasive method for early detection of the changes in photosynthetic apparatus, can be applied to detect nutrients deficiency in miscanthus (Miscanthus × gigantheus Anderss.) plants. The experiment was performed in fully randomized design with the following experimental variants: CaNPK (full fertilization, control), NPK (without calcium), CaKN (phosphorus poor), CaPK (nitrogen poor), CaPN (potassium poor), and Ca (without NPK). Our results revealed that the reaction of photosynthetic apparatus of miscanthus plants grown under certain macronutrient deficiency was associated with exclusive significant modifications in the measured chlorophyll fluorescence signals, analysed further by JIP-test. Analysis of chlorophyll fluorescence induction curves discovered substantial deficiency of phosphorus and potassium ahead of the standard chemical method.

Substrate-Dependent Effect of Vermicompost on Yield and Physiological Indices of Container-Grown Dracocephalum moldavica Plants

“…However, it can also be used to characterize changes in the general physiological status of plants, as related to their performance and environmental adaptation in the case of wild plants [28] or growth/yield relationships of crop species due to different agricultural practices [27]. In particular, several studies have shown a relationship between the photochemistry of photosynthesis and the status of plant mineral nutrition [31][32][33][34], indicating that chlorophyll a fluorescence analysis can be also used to predict the physiological status of crops in studies aiming to assess the effects of organic fertilizers.…”

Effect of Na, K and Ca Salts on Growth, Physiological Performance, Ion Accumulation and Mineral Nutrition of Mesembryanthemum crystallinum

“…Only Performance Index Total positively responded to nitrate salts ( Figure 1 D), showing that the particular parameter is less useful in directly evaluating salinity effects. As Performance Index Total is sensitive also to alterations in photochemical reactions at the donor side of photosystem II, such as the activity of a water-splitting complex [ 42 , 68 ], it reflects changes in physiological performance due to changes in mineral nutrient availability [ 69 , 70 ].…”

Recommended nitrogen rates and the verification of effects based on leaf SPAD readings of rice

“…Previous studies have shown that nutrient deficiencies influenced the photosynthetic yield of PSII (Redillas et al, 2011;Msilini et al, 2013;Kalaji et al, 2014). It was suggested that the chlorophyll fluorescence could be used as a noninvasive method to detect nutrient deficiency that is more precise and sensitive (Goltsev et al, 2016;Kalaji et al, 2018;Horaczek et al, 2020).…”