Prompt chlorophyll fluorescence as a tool for crop phenotyping: an example of barley landraces exposed to various abiotic stress factors

Abstract

The study examined photosynthetic efficiency of two barley landraces (cvs. Arabi Abiad and Arabi Aswad) through a prompt fluorescence technique under influence of 14 different abiotic stress factors. The difference in the behavior of photosynthetic parameters under the same stress factor in-between cv. Arabi Abiad and cv. Arabi Aswad indicated different mechanisms of tolerance and strategies for the conversion of light energy into chemical energy for both the landraces. This study confirmed the suitability of some chlorophyll fluorescence parameters as reliable biomarkers for screening the plants at the level of photosynthetic apparatus.

Special issue in honour of Prof. Reto J. Strasser - The JIP-test as a tool for forestry in times of climate change

“…In previous studies, OJIP induction curves and the derived parameters have been suggested as potential selection indicators for stress resistance in crops and even weeds, with special emphasis on heat, salt and drought resistance (e.g., Oukarroum et al 2007Oukarroum et al , 2009Jedmowski et al 2014, Sharma et al 2014, Chen et al 2016, Kalaji et al 2018. For woody plants, less examples, mostly with an emphasis on cold and salt tolerance, have been published [e.g., Percival and Fraser (2001) on Crataegus spp., Percival (2005) on Quercus robur and Q. ilex, Percival et al (2003) on Acer genotypes, Percival et al (2006) on Fraxinus genotypes].…”

A Novel Approach to Assess Salt Stress Tolerance in Wheat Using Hyperspectral Imaging

“…Among the potential solutions, selecting plant varieties with high tolerance to salt stress appears to be one of the most promising approaches in utilizing salt-affected soil for crop production (Ondrasek et al, 2011; Sytar et al, 2017). Although some progress has been made using measurement of photosynthetic parameters as a more sensitive method to screen for salt tolerance (Sun et al, 2016; Kalaji et al, 2018), the standard process of selecting either conventionally–bred or transgenic salt-tolerant crop lines relies on laborious phenotyping to assess tolerance. Despite the emergence of innovative platforms, precise instrumentation, sophisticated sensors, and rapid development of advanced machine learning and deep learning algorithms, phenotyping is still a barrier to variety development.…”

Salt Priming Protects Photosynthetic Electron Transport against Low-Temperature-Induced Damage in Wheat

“…In addition, the low temperature-induced MDA accumulation and cell death were alleviated by salt priming in S30 plants. It was suggested that salt priming with an optimal concentration of NaCl solution (30 mM) during seed germination enhanced the photochemical efficiency of photosystems in wheat seedlings, which could be a potential approach to improve cold tolerance in wheat at an early stage.Sensors 2020, 20, 62 2 of 12 the dark-adapted photosynthetic process by saturating light, is called OJIP (rapid fluorescence transient) curve [4,5]. This curve shows a sequence of phases from the initial (F o ) to the maximal (F M ) fluorescence value, which is labeled step O (all reaction centers open), J (~2 ms), I (~30 ms), P (equal to F M when all reaction centers are closed) [3,4].…”

“…It was suggested that salt priming with an optimal concentration of NaCl solution (30 mM) during seed germination enhanced the photochemical efficiency of photosystems in wheat seedlings, which could be a potential approach to improve cold tolerance in wheat at an early stage.Sensors 2020, 20, 62 2 of 12 the dark-adapted photosynthetic process by saturating light, is called OJIP (rapid fluorescence transient) curve [4,5]. This curve shows a sequence of phases from the initial (F o ) to the maximal (F M ) fluorescence value, which is labeled step O (all reaction centers open), J (~2 ms), I (~30 ms), P (equal to F M when all reaction centers are closed) [3,4]. The shape of OJIP transient depends on the relative content of PS II, the redox state of the reaction centers and donors, cytochrome (Cybdf), PS I and the pool size of plastoquinone (PQ) and ferredoxin [3][4][5].…”

“…This curve shows a sequence of phases from the initial (F o ) to the maximal (F M ) fluorescence value, which is labeled step O (all reaction centers open), J (~2 ms), I (~30 ms), P (equal to F M when all reaction centers are closed) [3,4]. The shape of OJIP transient depends on the relative content of PS II, the redox state of the reaction centers and donors, cytochrome (Cybdf), PS I and the pool size of plastoquinone (PQ) and ferredoxin [3][4][5]. It has been well documented that low temperature causes an imbalance between the capacity for harvesting light energy and dissipating energy through metabolic activity, resulting in the damage of the thylakoid structure and distortion in the electron transport of photosynthetic reactions [6,7].…”