Low temperature and hardening effects on photosynthetic apparatus efficiency and survival of forage grass varieties

Borawska-Jarmułowicz, B.; Mastalerczuk, G.; Pietkiewicz, S.; Kalaji, Mohamed H.

doi:10.17221/57/2014-pse

Cited by 30 publications

(17 citation statements)

References 8 publications

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“…Several other reports have also shown a clear reduction in photosynthetic activity of plants as a result of fungal infection (Bassanezi et al 2002;Zhori et al 2015) High time-resolution measurements of the chlorophyll a fluorescence (ChlF) transient represents a particularly quick method for gaining detailed information about PSII photochemical activity, electron transport events and the different regulatory processes (Schansker et al 2006). In recent times, ChlF measurements are gaining popularity as a technique to identify plant stress (Baker and Rosenqvist 2004;Baker 2008;Borawska-Jarmułowicz et al 2014;Bouthour et al 2015;Kalaji et al 2018). The time dependent increase in ChlF intensity with application of continuous bright light to a previously dark-adapted sample is used to calculate fast ChlF kinetics data.…”

Section: Introductionmentioning

confidence: 99%

Impact of Fusarium verticillioides on chlorophyll fluorescence parameters of two maize lines

et al. 2019

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Fusarium verticillioides is one of the most common phytopathogenic fungi affecting maize production, worldwide. The early identification of F. verticillioides infection in maize could be helpful to prevent the spreading of the fungus. Therefore, this study represents the use of chlorophyll fluorescence parameters to identify F. verticillioides infection in maize. Chlorophyll a fluorescence of control and F. verticillioides infected plants showed a typical polyphasic OJIP transient curve in both MO17 and B73 lines. Infected plants from both maize lines showed a different pattern of OJIP transient curve when compared to the control plants, respectively. This indicated that F. verticillioides had an effect on the photosynthesis of infected maize plants. This study demonstrated the importance of parameters such as: the activity of the watersplitting complex on the donor side of PSII (F v /F 0), minimum fluorescence (F 0), maximum fluorescence (F m), and absorption flux per one active reaction center (ABS/RC) to identify F. verticillioides infection in maize.

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Section: Introductionmentioning

confidence: 99%

Impact of Fusarium verticillioides on chlorophyll fluorescence parameters of two maize lines

et al. 2019

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“…Under a decreased rate of CO 2 assimilation induced by water stress, light energy absorbed by the leaf cannot be used to drive photosynthetic electron transport (photochemistry) and part of this energy is diverted to other processes to protect the photosynthetic system, increasing the non-photochemical fluorescence quenching [23]. For this reason the chlorophyll fluorescence technique has become a valuable and simple tool to measure the extent of plant tolerance to stress [24][25][26], providing useful information on energy absorption, utilization and dissipation, and electron transport in the photosystem II (PSII; [27]). …”

Section: Introductionmentioning

confidence: 99%

Estimation of Water Stress in Grapevines Using Proximal and Remote Sensing Methods

et al. 2018

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Abstract:In light of climate change and its impacts on plant physiology, optimizing water usage and improving irrigation practices play a crucial role in crop management. In recent years, new optical remote sensing techniques have become widespread since they allow a non-invasive evaluation of plant water stress dynamics in a timely manner. Unmanned aerial vehicles (UAV) currently represent one of the most advanced platforms for remote sensing applications. In this study, remote and proximal sensing measurements were compared with plant physiological variables, with the aim of testing innovative services and support systems to farmers for optimizing irrigation practices and scheduling. The experiment, conducted in two vineyards located in Sardinia, Italy, consisted of two regulated deficit irrigation (RDI) treatments and two reference treatments maintained under stress and well-watered conditions. Indicators of crop water status (Crop Water Stress Index-CWSI-and linear thermal index) were calculated from UAV images and ground infrared thermal images and then related to physiological measurements. The CWSI values for moderate water deficit (RDI-1) were 0.72, 0.28 and 0.43 for 'Vermentino', 'Cabernet' and 'Cagnulari' respectively, while for severe (RDI-2) water deficit the values were 0.90, 0.34 and 0.51. The highest differences for net photosynthetic rate (Pn) and stomatal conductance (Gs) between RDI-1 and RDI-2 were observed in 'Vermentino'. The highest significant correlations were found between CWSI with Pn (R = −0.80), with Φ PSII (R = −0.49) and with Fv'/Fm' (R = −0.48) on 'Cagnulari', while a unique significant correlation between CWSI and non-photochemical quenching (NPQ) (R = 0.47) was found on 'Vermentino'. Pn, as well as the efficiency of light use by the photosystem II (PSII), declined under stress conditions and when CWSI values increased. Under the experimental water stress conditions, grapevines were able to recover their efficiency during the night, activating a photosynthetic protection mechanism such as thermal energy dissipation (NPQ) to prevent irreversible damage to the photosystem. The results presented here demonstrate that CWSI values derived from remote and proximal sensors could be valuable indicators for the assessment of the spatial variability of crop water status in Mediterranean vineyards.

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“…Both traits are strongly influenced by environmental effects, which is apparently crucial for crop production when faced by climate change [ 1 ]. To monitor environmental effects on plant growth and development, chlorophyll fluorescence measurements have been used to study changes in photosynthetic activity triggered by environmental stresses such as nutrient deficiency [ 2 ], heavy metal soil contamination [ 3 ], salinity [ 4 , 5 ], drought [ 6 ], light stress [ 7 ] and high [ 8 – 10 ] and low [ 11 , 12 ] temperatures. The chlorophyll fluorescence measurement data can be analyzed by the so-called OJIP test, which is based on the theory of energy flow in thylakoid membranes, thereby facilitating a better understanding of the relationships between the biophysical side of photosynthesis and fluorescence signals [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Is the OJIP Test a Reliable Indicator of Winter Hardiness and Freezing Tolerance of Common Wheat and Triticale under Variable Winter Environments?

et al. 2015

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OJIP analysis, which explores changes in photosystem II (PSII) photochemical performance, has been used as a measure of plant susceptibility to stress. However, in the case of freezing tolerance and winter hardiness, which are highly environmentally variable, the use of this method can give ambiguous results depending on the species as well as the sampling year and time. To clarify this issue, we performed chlorophyll fluorescence measurements over three subsequent winters (2010/11, 2011/12 and 2012/13) on 220 accessions of common winter wheat and 139 accessions of winter triticale. After freezing, leaves were collected from cold-acclimated plants in the laboratory and field-grown plants. Observations of field survival in seven locations across Poland and measurements of freezing tolerance of the studied plants were also recorded. Our results confirm that the OJIP test is a reliable indicator of winter hardiness and freezing tolerance of common wheat and triticale under unstable winter environments. Regardless of species, the testing conditions giving the most reliable results were identical, and the reliability of the test could be easily checked by analysis of some relationships between OJIP-test parameters. We also found that triticale is more winter hardy and freezing tolerant than wheat. In addition, the two species were characterized by different patterns of photosynthetic apparatus acclimation to cold.

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Low temperature and hardening effects on photosynthetic apparatus efficiency and survival of forage grass varieties

Cited by 30 publications

References 8 publications

Impact of Fusarium verticillioides on chlorophyll fluorescence parameters of two maize lines

Impact of Fusarium verticillioides on chlorophyll fluorescence parameters of two maize lines

Estimation of Water Stress in Grapevines Using Proximal and Remote Sensing Methods

Is the OJIP Test a Reliable Indicator of Winter Hardiness and Freezing Tolerance of Common Wheat and Triticale under Variable Winter Environments?

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