The Use of OJIP Fluorescence Transients to Monitor the Effect of Elevated Ozone on Biomass of Canola Plants

Maliba, Bheki G.; Michael, Prabhu Inbaraj; Berner, J.M.

doi:10.1007/s11270-019-4124-y

Cited by 6 publications

(7 citation statements)

References 50 publications

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“…Marzuoli et al [83] reported that elevated O 3 levels significantly decreased PS II photochemical efficiency and electron flow in lettuce. O 3 induced ROS damage PS II RCs [84]. According to the OJIP transient curves in this study, elevated temperature did not negatively affect PS II RCs.…”

Section: Discussionsupporting

confidence: 50%

Ozone Response of Leaf Physiological and Stomatal Characteristics in Brassica juncea L. at Supraoptimal Temperatures

Lee

Kwak

Park

et al. 2021

Land

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Plants are affected by the features of their surrounding environment, such as climate change and air pollution caused by anthropogenic activities. In particular, agricultural production is highly sensitive to environmental characteristics. Since no environmental factor is independent, the interactive effects of these factors on plants are essential for agricultural production. In this context, the interactive effects of ozone (O3) and supraoptimal temperatures remain unclear. Here, we investigated the physiological and stomatal characteristics of leaf mustard (Brassica juncea L.) in the presence of charcoal-filtered (target concentration, 10 ppb) and elevated (target concentration, 120 ppb) O3 concentrations and/or optimal (22/20 °C day/night) and supraoptimal temperatures (27/25 °C). Regarding physiological characteristics, the maximum rate of electron transport and triose phosphate use significantly decreased in the presence of elevated O3 at a supraoptimal temperature (OT conditions) compared with those in the presence of elevated O3 at an optimal temperature (O conditions). Total chlorophyll content was also significantly affected by supraoptimal temperature and elevated O3. The chlorophyll a/b ratio significantly reduced under OT conditions compared to C condition at 7 days after the beginning of exposure (DAE). Regarding stomatal characteristics, there was no significant difference in stomatal pore area between O and OT conditions, but stomatal density under OT conditions was significantly increased compared with that under O conditions. At 14 DAE, the levels of superoxide (O2-), which is a reactive oxygen species, were significantly increased under OT conditions compared with those under O conditions. Furthermore, leaf weight was significantly reduced under OT conditions compared with that under O conditions. Collectively, these results indicate that temperature is a key driver of the O3 response of B. juncea via changes in leaf physiological and stomatal characteristics.

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Section: Discussionsupporting

confidence: 50%

Ozone Response of Leaf Physiological and Stomatal Characteristics in Brassica juncea L. at Supraoptimal Temperatures

Lee

Kwak

Park

et al. 2021

Land

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“…In contrast to φ Po , many papers have reported a rapid decrease of PI ABS in response to various types of stress, such as water deficit [ 18 , 20 , 21 , 59 ], salinity [ 25 , 48 ], and a decrease of PI ABS_Total as reported for moderate ozone stress [ 29 ]. Even during a daily cycle in a grass species, PI ABS significantly decreased before φ Po on a more than a less stressful day during summer [ 56 ].…”

Section: Resultsmentioning

confidence: 99%

“…Detailed definitions and equations of raw and derived JIP test fluorescence parameters are reported in Table 1 (see also [ 11 ]). Authors have used JIP test to study the effects of various types of stress [ 17 ] Faseela at al.2020 [ 18 ], such as heat [ 13 , 19 ] drought [ 20 , 21 , 22 , 23 ], salinity [ 24 , 25 ], combined drought and salt stress [ 26 , 27 ] ozone [ 28 , 29 ], nutrient deficiency [ 30 , 31 ], toxic metals [ 10 ], or climate change [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

Polyphasic OKJIP Chlorophyll a Fluorescence Transient in a Landrace and a Commercial Cultivar of Sweet Pepper (Capsicum annuum, L.) under Long-Term Salt Stress

Giorio

Sellami

2021

Plants

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In a soilless long-term salt-stress experiment, we tested the differences between the commercial sweet pepper cultivar “Quadrato d’Asti” and the landrace “Cazzone Giallo” in the structure and function of PSII through the JIP test analysis of the fast chlorophyll fluorescence transients (OKJIP). Salt stress inactivated the oxygen-evolving complex. Performance index detected the stress earlier than the maximum quantum yield of PSII, which remarkably decreased in the long term. The detrimental effects of salinity on the oxygen evolving-complex, the trapping of light energy in PSII, and delivering in the electron transport chain occurred earlier and more in the landrace than the cultivar. Performance indexes decreased earlier than the maximum quantum yield of PSII. Stress-induced inactivation of PSII reaction centers reached 22% in the cultivar and 45% in the landrace. The resulted heat dissipation had the trade-off of a correspondent reduced energy flow per sample leaf area, thus an impaired potential carbon fixation. These results corroborate the reported higher tolerance to salt stress of the commercial cultivar than the landrace in terms of yield. PSII was more affected than PSI, which functionality recovered in the late of trial, especially in the cultivar, possibly due to heat dissipation mechanisms. This study gives valuable information for breeding programs aiming to improve tolerance in salt stress sensitive sweet pepper genotypes.

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“…The analysis of the chlorophyll fluorescence and the analysis of the OJIP transients are key methodologies to assess the functionality of the photosynthetic machinery following exposure to O 3 [5,22]. The former was assessed through a number of the OJIP step fluorescence parameters, summarized in Table 1, which describes the ability of the photosynthetic system to absorb, trap, transmit, and convert the absorbed light into energy for CO 2 fixation [23], while the latter analyzed the ∆V OP profile, calculated by the difference between the V OP profile of treated (Ozone + WD) and control (Ozone) samples (∆V OP = V OP treated (ozone + WD) − V OP control(ozone); [24]).…”

Section: Chlorophyll Fluorescence Analysesmentioning

confidence: 99%

“…However, when ground-level exceeds the tolerance threshold generally estimated at ca. 40 ppb [4,5], O 3 becomes phytotoxic and capable of damaging agricultural plants and forest vegetation, and even the biodiversity of a whole ecosystem [2,6]. Following the global increase in O 3 background concentrations that occurred in the last 20-30 years, 2-15% reductions in the global crop yield were estimated, with a remarkable economic loss [7].…”

Section: Introductionmentioning

confidence: 99%

Foliar Application of Wood Distillate Alleviates Ozone-Induced Damage in Lettuce (Lactuca sativa L.)

Vannini

Fedeli

Guarnieri

2022

Toxics

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This study examined whether foliar applications of wood distillate (WD) have a protective effect on photosynthesis and the antioxidant power of lettuce when exposed to an ecologically relevant O3 concentration. Seedlings of lettuce (Lactuca sativa L.) were fumigated daily with 60 ppb of O3 for 30 days, five hours per day. Once per week, 50% of the fumigated plants were treated with foliar applications of 0.2% WD, while control plants were treated with water. The results clearly showed the ability of WD to protect lettuce plants from ozone-induced damage. Specifically, WD-treated plants exhibited lower damage to the photosynthetic machinery, assessed through a series of chlorophyll fluorescence parameters, a higher chlorophyll content, higher antioxidant power, as well as antioxidant molecules, i.e., caffeic acid and quercetin, and higher biomass. Counteracting the overproduction of ozone-generated reactive oxygen species (ROS) is speculated to be the main mechanism by which WD protects the plant from ozone-induced damage.

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The Use of OJIP Fluorescence Transients to Monitor the Effect of Elevated Ozone on Biomass of Canola Plants

Cited by 6 publications

References 50 publications

Ozone Response of Leaf Physiological and Stomatal Characteristics in Brassica juncea L. at Supraoptimal Temperatures

Ozone Response of Leaf Physiological and Stomatal Characteristics in Brassica juncea L. at Supraoptimal Temperatures

Polyphasic OKJIP Chlorophyll a Fluorescence Transient in a Landrace and a Commercial Cultivar of Sweet Pepper (Capsicum annuum, L.) under Long-Term Salt Stress

Foliar Application of Wood Distillate Alleviates Ozone-Induced Damage in Lettuce (Lactuca sativa L.)

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