Effects of endogenous ascorbic acid on resistance to high-temperature stress in excised rice leaves

Zhang, Q.L.; Wei, Yijun; Peng, Chang-Lian

doi:10.1007/s11099-018-0836-2

Cited by 20 publications

(10 citation statements)

References 38 publications

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“…Moreover, reduced AC accumulation had a positive correlation with the soil temperatures (r = 0.63, p < 0.05). There is data to suggest that high temperatures induce the synthesis of ascorbate [10,22,23]. Probably, an increase in the AC content in the leaves is a response of the plants to high temperatures.…”

Section: Discussionmentioning

confidence: 99%

Ecological and Geochemical Conditions for the Accumulation of Antioxidants in the Leaves of Lathyrus maritimus (L.) Bigel

Maslennikov

Головина

Artemenko

2020

Plants

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The article explores how location affected the dynamics of accumulation of ascorbic acid (AC) and oxidized forms of AC—dehydroascorbic acid (DAA) and diketogulonic acid (DKGA) in beach pea during ontogenetic development. Our analysis focuses on research of the ecological and geochemical conditions growing of the plant on the Curonian Spit. The level of hydrogen peroxide and the activity of enzymes that break it down were analyzed. Antioxidant activity and the total concentration of phenolics were evaluated in the leaves of beach pea on the leeward and windward sides of the foredune. It was established that the level of AC, DAA, and DKGA was higher in the plants growing on the windward side of the foredune. A higher concentration of peroxy compounds, which stimulate the biosynthesis of antioxidant enzymes (catalase, ascorbate peroxidase), polyphenols, and other low molecular antioxidants (AOA) was observed in the leaves of these plants. The plants on the windward side enter phenological stages one or two weeks later than their counterparts on the leeward side of the foredune do. There was a generally negative correlation between the temperature of the soil and the accumulation of ascorbate system acids in the leaves of the studied plants (r = −0.46/(−0.68), p < 0.05). The accumulation of low molecular antioxidants and enzymes in beach pea suggests their adaptation to the adverse conditions of the windward side of the foredune.

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Section: Discussionmentioning

confidence: 99%

Ecological and Geochemical Conditions for the Accumulation of Antioxidants in the Leaves of Lathyrus maritimus (L.) Bigel

Maslennikov

Головина

Artemenko

2020

Plants

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“…Endogenous ascorbic acid protects plants from oxidative stress and maintains the stability of photosynthetic function. Zhang et al [51] studied the effect of endogenous ascorbic acid content by using transgenic rice with overexpressed and suppressed GLDH (L-galactono-1,4,-lactone dehydrogenase) enzyme activity under high temperature. Higher ROS were found in transgenic rice with suppressed GLDH.…”

Section: Induction Of Acclimation By Using Growth Regulators/protementioning

confidence: 99%

“…Under high temperature the level of auxin reduced and reduction of IAA and GAs was more in heat susceptible cultivar than tolerant genotype [56]. Zhang et al [51] studied the effect of spraying auxin on the elongation of pollen tubes of heat-tolerant and susceptible genotypes. They reported that spraying naphthaleneacetic acid reduced and reversed the spikelet sterility of both the heat susceptible and tolerant genotypes of rice by inhibiting the reduction of pollen tube growth.…”

Section: Induction Of Acclimation By Using Growth Regulators/protementioning

confidence: 99%

Mechanisms and Adaptation Strategies to Improve Heat Tolerance in Rice. A Review

Khan

Anwar

Ashraf

et al. 2019

Plants

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The incidence of short episodes of high temperature in the most productive rice growing region is a severe threat for sustainable rice production. Screening for heat tolerance and breeding to increase the heat tolerance of rice is major objective in the situation of recent climate change. Replacing sensitive genotypes with heat tolerant cultivars, modification in sowing time, and use of growth regulators are some of the adaptive strategies for the mitigation of yield reduction by climate change. Different strategies could be adopted to enhance the thermos-tolerance of rice by (1) the modification of agronomic practices i.e., adjusting sowing time or selecting early morning flowering cultivars; (2) induction of acclimation by using growth regulators and fertilizers; (3) selecting the genetically heat resistant cultivars by breeding; and, (4) developing genetic modification. Understanding the differences among the genotypes could be exploited for the identification of traits that are responsible for thermo-tolerance for breeding purpose. The selection of cultivars that flowers in early morning before the increase of temperature, and having larger anthers with long basal pore, higher basal dehiscence, and pollen viability could induce higher thermo-tolerance. Furthermore, the high expression of heat shock proteins could impart thermo-tolerance by protecting structural proteins and enzymes. Thus, these traits could be considered for breeding programs to develop resistant cultivars under a changing climate.

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“…Chl and carotenoids (Car) are two major pigments involved in photosynthesis in the leaves of higher plants (Rodríguez et al 2016, Zhang et al 2018. A decline of the pigment contents is usually regarded as a reliable index of leaf senescence (Zhang et al 2019, Zheng et al 2019.…”

Section: Introductionmentioning

confidence: 99%

Changes in photosynthetic pigments and chlorophyll fluorescence parameters in the super-high-yielding rice hybrid Peiai64S/E32 during senescence

Zeng¹,

Zhang²,

Cai³

et al. 2020

Photosynt.

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The hybrid rice (Oryza sativa L.) cultivar Peiai64S/E32, which is a hybrid of E32 and Peiai64S, has a super high yield compared with that of its parents. Changes in photosynthetic pigments and chlorophyll (Chl) fluorescence parameters were investigated in the flag leaves during senescence. The content of Chl and carotenoids in the flag leaves of Peiai64S/E32 was more stable than those of their parents during senescence. Furthermore, Peiai64S/E32 had a more stable PSII activity and a lower nonphotochemical quenching and deepoxidation state than that of its parents in the later stage of senescence. These results demonstrated that Peiai64S/E32 functioned longer than its parents did during the leaf senescence and grain-filling period. This occurred because there was more excitation energy to drive photosynthetic CO2 fixation in Peiai64S/E32, as the pigments supplying the energy survived longer in the high-yielding rice compared to the parents.

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Effects of endogenous ascorbic acid on resistance to high-temperature stress in excised rice leaves

Cited by 20 publications

References 38 publications

Ecological and Geochemical Conditions for the Accumulation of Antioxidants in the Leaves of Lathyrus maritimus (L.) Bigel

Ecological and Geochemical Conditions for the Accumulation of Antioxidants in the Leaves of Lathyrus maritimus (L.) Bigel

Mechanisms and Adaptation Strategies to Improve Heat Tolerance in Rice. A Review

Changes in photosynthetic pigments and chlorophyll fluorescence parameters in the super-high-yielding rice hybrid Peiai64S/E32 during senescence

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