Effect of ambient levels of ozone on photosynthetic components and radical scavenging system in leaves of African cowpea varieties

Tetteh, Rashied; Yamaguchi, Masahiro; Izuta, Takeshi

doi:10.4314/acsj.v24i2.2

Cited by 5 publications

(6 citation statements)

References 29 publications

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“…These results are consistent with references [34,35]), where these parameters were strongly reduced but only after 40–50 days of treatment. Umponstira et al [36] found strong ozone effects on cowpea biomass production after only 7 days of treatment, but subsequent results showed that cowpea plants at the vegetative growth stage, as in the present study, were less sensitive to ozone than plants at later growth stages [37].…”

Section: Discussionsupporting

confidence: 93%

“…Intervarietal differences in ozone sensitivty were found in African cowpea cultivars, but could not be explained by differential radical scavenging capacities [34,35]. Here, this discrepancy between the two cultivars could be explained by a higher oxidative load in leaf tissues of IT83-D than in those of EPACE-1 as indicated by a higher ozone uptake in IT83-D (+21% in POD 0 , Table 1), even though this difference was not significant.…”

Section: Discussionmentioning

confidence: 88%

“…While the impact of water stress on cowpea has been extensively studied [21,29,30,31], the response of this crop to ozone is less documented [32]. In recent studies, the responses of cowpea to ozone have been investigated in Asian and African cultivars with respect to biomass production, yield, photosynthesis, nitrogen fixation and ROS detoxification [33,34,35,36,37]. Here, we investigated the response of a Southamerican (EPACE-1) and an Asian cultivar (IT83-D) to the combination of ozone and drought stresses.…”

Section: Introductionmentioning

confidence: 99%

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Combined Effects of Ozone and Drought on the Physiology and Membrane Lipids of Two Cowpea (Vigna unguiculata (L.) Walp) Cultivars

Rebouças

Sousa

Bagard

et al. 2017

Plants

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The interactive effects of drought and ozone on the physiology and leaf membrane lipid content, composition and metabolism of cowpea (Vigna unguiculata (L.) Walp.) were investigated in two cultivars (EPACE-1 and IT83-D) grown under controlled conditions. The drought treatment (three-week water deprivation) did not cause leaf injury but restricted growth through stomatal closure. In contrast, the short-term ozone treatment (130 ppb 12 h daily during 14 day) had a limited impact at the whole-plant level but caused leaf injury, hydrogen peroxide accumulation and galactolipid degradation. These effects were stronger in the IT83-D cultivar, which also showed specific ozone responses such as a higher digalactosyl-diacylglycerol (DGDG):monogalactosyl-diacylglycerol (MGDG) ratio and the coordinated up-regulation of DGDG synthase (VuDGD2) and ω-3 fatty acid desaturase 8 (VuFAD8) genes, suggesting that membrane remodeling occurred under ozone stress in the sensitive cultivar. When stresses were combined, ozone did not modify the stomatal response to drought and the observed effects on whole-plant physiology were essentially the same as when drought was applied alone. Conversely, the drought-induced stomatal closure appeared to alleviate ozone effects through the reduction of ozone uptake.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Combined Effects of Ozone and Drought on the Physiology and Membrane Lipids of Two Cowpea (Vigna unguiculata (L.) Walp) Cultivars

Rebouças

Sousa

Bagard

et al. 2017

Plants

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“…Moreover, the decline in the carotenoid pigments might also reduce the chlorophyll content (Salvatori et al, 2013). The results corroborate with studies given by Tetteh et al (2016). The relative physiological characteristics of blackgram varieties varied among each other with a mean value of 70.80, 71.39, and 66.63% for stomatal conductance, photosynthetic rate, and chlorophyll content (Fig.…”

Section: Physiological Traitssupporting

confidence: 89%

“…This decline might be due to the non-enzymatic defense mechanism of blackgram varieties under ozone stress. Antioxidants are produced to nullify the ROS toxicity (Caregnato et al, 2013) and the redox condition of AsA becomes unstable, eventually resulting in insufficient detoxification by AsA (Tetteh et al, 2016). The proline content increased under ozone stress varying from 4.81 to 6.08 µmol g -1 F.W.…”

Section: Biochemical Traitsmentioning

confidence: 99%

Response of Blackgram Cultivars to Elevated Tropospheric Ozone

Dhevagi¹,

Ramya²,

Poornima³

et al. 2021

MAJ

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As a secondary pollutant, Tropospheric ozone is inadvertently increasing every year, thereby causing severe loss to agricultural crops. The present study aimed at evaluating the response of tropospheric ozone against blackgram varieties. Eight ruling blackgram varieties (V.B.N. 1, V.B.N. 2, V.B.N. 3, V.B.N. 5, V.B.N. 6, V.B.N. 7, V.B.N. 8 and CO 6) were exposed to elevated tropospheric ozone concentration (50 ppb) in an open-top chamber. The exposure was given during 31 days after sowing (D.A.S.) to 40 D.A.S. for seven hours (10.00 h-17.00 h). The changes in physiological, biochemical, growth, and yield traits were observed by comparing them with control (ambient condition). Results indicate that physiological, biochemical, growth, and yield traits significantly differed under ozone stress. Amongst all varieties, the reduction of all observed traits was higher in V.B.N. 3 and least in V.B.N. 8. The reduction of photosynthetic rate, stomatal conductance, and chlorophyll content was higher in V.B.N. 3 (33.57, 29.17 and 35.67 %) and least in V.B.N. 8 (26.23, 22.92 and 31.78 %). In the case of biochemical traits, in V.B.N. 3, the malondialdehyde and proline content increased twice and ascorbic acid declined by 39.85 %. However, in V.B.N. 8, malondialdehyde and proline content increased by 78.26 and 89.01 %; while ascorbic acid decreased by 36.31 % only. Similarly, 100-grain weight reduced in V.B.N. 3 by 8.69 % while it was only 5.37 % in V.B.N. 8. The current investigation revealed that V.B.N. 3 is highly sensitive, while V.B.N. 8 is tolerant to ozone stress.

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The efficacy of rhizobia inoculation under climate change

Tankari

Wang

2022

Sustainable Crop Productivity and Quality Under Climate Change

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Effect of ambient levels of ozone on photosynthetic components and radical scavenging system in leaves of African cowpea varieties

Cited by 5 publications

References 29 publications

Combined Effects of Ozone and Drought on the Physiology and Membrane Lipids of Two Cowpea (Vigna unguiculata (L.) Walp) Cultivars

Combined Effects of Ozone and Drought on the Physiology and Membrane Lipids of Two Cowpea (Vigna unguiculata (L.) Walp) Cultivars

Response of Blackgram Cultivars to Elevated Tropospheric Ozone

The efficacy of rhizobia inoculation under climate change

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