Photosynthetic performance of two maize genotypes as affected by chilling stress

Kosová, Klára; Haisel, D.; Tichá, Ingrid

doi:10.17221/3575-pse

Cited by 7 publications

(8 citation statements)

References 26 publications

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“…Chilling had no effect on the content of chlorophylls analyzed in sweet cherry leaves. In accordance with our results, some other authors did not observe changes in chlorophyll content in basil plants 33 and maize 34 exposed at 6 °C for 8 and 10 days, respectively. In contrast, a reduction in leaf chlorophyll content was observed in Vitis vinifera exposed at 5 °C for 7 days 7 and coffee plants exposed at 4 °C for 3 days 23 .…”

Section: Discussionsupporting

confidence: 93%

Response of chloroplast pigments, sugars and phenolics of sweet cherry leaves to chilling

Vošnjak

Šircelj

Hudina

et al. 2021

Sci Rep

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The aim of the present study was to evaluate the effect of post-flowering chilling of sweet cherry (Prunus avium L.) on the content of biochemical parameters in the leaf (chloroplast pigments, sugars and phenolics). The effect of chilling was investigated in two experiments. Potted 2-year-old trees of cv. 'Grace Star' and 'Schneiders' were exposed to one, two or three consecutive overnight chillings at an average air temperature of 4.7 °C (Experiment I), but in the following year only trees of 'Grace Star' were chilled at 2.2 °C (Experiment II), 3 to 7 weeks after flowering. The analysis of the biochemical parameters was performed by high performance liquid chromatography combined with electrospray ionization mass spectrometry. Chilling at 4.7 °C caused little or no stress, while 2.2 °C induced more intense stress with increased zeaxanthin, sugar and phenolic content in leaves, while exposure of trees to higher temperatures and closer to flowering showed no changes. Two or three consecutive overnight chilling periods increased the phenolic content and enhanced the accumulation of zeaxanthin in the leaves. Sucrose, sorbitol, fructose, total sugar, and total flavonoid content in leaves increased within 48 h after chilling. Zeaxanthin epoxidized within 24 h after one and 48 h after one and two consecutive overnight chillings.

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Section: Discussionsupporting

confidence: 93%

Response of chloroplast pigments, sugars and phenolics of sweet cherry leaves to chilling

Vošnjak

Šircelj

Hudina

et al. 2021

Sci Rep

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“…In our study, the applied chilling stress (10°C, during 14 days) provoked visual chlorotic symptoms and growth retardation in young maize plants. The observed growth inhibition was accompanied by a lower content of photosynthetic pigments, reduced photosynthetic and transpiration rates, and suppression of photochemical processes, as was described in our previous studies [33] and by other authors as well [34][35][36].…”

Section: Discussionsupporting

confidence: 83%

Photosynthetic performance of young maize (Zea mays L.) plants exposed to chilling stress can be improved by the application of protein hydrolysates

2019

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Biostimulants offer a novel approach for the regulation of crucial physiological processes in plants. Recently, it has been observed that the application of biostimulants on both seeds and plants may ameliorate to some extent the negative effects of abiotic stresses such as drought, heat, salinity, and others. In the climate conditions of Bulgaria, the early developmental stages of warm climate crops, like maize, often occur under suboptimal temperatures. Although the mitigation of abiotic stress is perhaps the most frequently cited benefit of biostimulant formulations, little is known about their influence on chilling-stressed plants. The aim of our study was to evaluate the effects of a biostimulant from the group of protein hydrolysates on both the growth and the photosynthetic performance of chilling-exposed young maize plants grown in controlled environment. Here, we report that application of a protein hydrolysate increased the performance of chilled maize plants, as demonstrated by leaf gas exchange, photosynthetic pigment content, and chlorophyll fluorescence, but did not affect their growth. Nevertheless, based on the better preserved photosynthetic performance of the biostimulant-treated maize plants exposed to chilling, we assume that under subsequent favorable conditions their growth would recover more quickly as compared to the untreated ones.

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“…Quantum yield of PS 2 photochemistry serves as a good indicator how plants respond to environmental constraints under high irradiance (Kitao et al 2000, Einhorn et al 2004, Zhang et al 2009. Moreover, the response from ETR and others fluorescence parameters to photosynthetic photon flux density (PPFD) has been employed as a rapid and non-invasive probe for assessing photosynthetic capacity of leaves, its light acclimation state and its capacity to tolerate changes in irradiance (Kosová et al 2005, Osório et al 2006.…”

Section: Introductionmentioning

confidence: 99%

Chlorophyll fluorescence in micropropagated Rhododendron ponticum subsp. baeticum plants in response to different irradiances

Osório¹,

Osório²,

Romano³

2010

Biologia plant.

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The aim of this study was to investigate acclimation of micropropagated plants of Rhododendron ponticum subsp. baeticum to different irradiances and recovery after exposure to high irradiance. Plants grown under high (HL) or intermediate (IL) irradiances displayed higher values of maximum electron transport rate (ETR max ) and light saturation coefficient (E k ) than plants grown under low irradiance (LL). The capacity of tolerance to photoinhibition (as assessed by the response of photochemical quenching, q p ) varied as follows: HL > IL > LL. Thermal energy dissipation (q N ) was also affected by growth irradiance, with higher saturating values being observed in HL plants. Light-response curves suggested a gradual replacement of q p by q N with increasing irradiance. Following exposure to irradiance higher than 1500 μmol m -2 s -1 , a prolonged reduction of the maximal photochemical efficiency of PS 2 (F v /F m ) was observed in LL plants, indicating the occurrence of chronic photoinhibition. In contrary, the decrease in F v /F m was quickly reverted in HL plants, pointing to a reversible photoinhibition.

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Photosynthetic performance of two maize genotypes as affected by chilling stress

Cited by 7 publications

References 26 publications

Response of chloroplast pigments, sugars and phenolics of sweet cherry leaves to chilling

Response of chloroplast pigments, sugars and phenolics of sweet cherry leaves to chilling

Photosynthetic performance of young maize (Zea mays L.) plants exposed to chilling stress can be improved by the application of protein hydrolysates

Chlorophyll fluorescence in micropropagated Rhododendron ponticum subsp. baeticum plants in response to different irradiances

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