The xanthophyll cycle and antioxidative defense system are enhanced in the wheat hybrid subjected to high light stress

Chen, Xiaoying; Li, Wei; Lu, Qingtao; Wen, Xiaopeng; Li, Hongwei; Kuang, Tingyun; Li, Zhensheng; Lu, Congming

doi:10.1016/j.jplph.2011.05.019

Cited by 33 publications

(17 citation statements)

References 45 publications

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“…However, many crops have evolved various mechanisms to cope with the adverse environments. Many studies have also indicated that different plant species can alleviate the oxidative damage and thereby improve photosynthesis through redox regulations under environmental stresses (Rizhsky et al 2004, Chen et al 2011, 2017. In this study, we investigated the different oxidative stress and redox regulations in wheat under three environmental stresses.…”

Section: Discussionmentioning

confidence: 98%

Different responses of photosystem and antioxidant defense system to three environmental stresses in wheat seedlings

Wu¹,

Mao²,

Chen³

et al. 2020

Photosynt.

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To investigate the adaptive mechanism of wheat under high light, osmotic stress, and salt stress, redox regulation, and photosynthesis were compared. Under high light, the activities of antioxidant enzymes, except for catalase, significantly increased and then decreased after 1 and 3 h, respectively. Under osmotic stress, antioxidant enzyme activities significantly increased and subsequently declined. Except for superoxide dismutase, salt stress induced a significant increase in all the antioxidant enzyme activities. A significant decrease of D1 protein by high light and osmotic stress, strong photophosphorylation of D1 and D2 under high light and salt stress were observed, while all the stresses induced upregulation of PsbS protein. Eight stress-associated genes (TaMYB73,

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Section: Discussionmentioning

confidence: 98%

Different responses of photosystem and antioxidant defense system to three environmental stresses in wheat seedlings

Wu¹,

Mao²,

Chen³

et al. 2020

Photosynt.

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“…The photochemically active broken mesophyll chloroplasts were isolated from 1.5–2 g of leaf tissue using the procedure described by [36]. The resulting chloroplast suspensions were maintained at 0°C and in the dark until the measurements of Photosystem (PS) I and II activities.…”

Section: Methodsmentioning

confidence: 99%

“…g ., the increase in heterosis observed in plants subjected to sub-optimal or supraoptimal temperature or high irradiance conditions [24]. For these types of stressors, the hybrid superiority observed on a whole plant level is usually accompanied/caused by a similar hybrid superiority in efficiency of thylakoid photosynthetic complexes [29–32], the content of photosynthetic pigments [33] or soluble sugars [34–35], the protective capacity of antioxidative systems [31–32, 36], etc .…”

Section: Introductionmentioning

confidence: 99%

The disadvantages of being a hybrid during drought: A combined analysis of plant morphology, physiology and leaf proteome in maize

et al. 2017

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A comparative analysis of various parameters that characterize plant morphology, growth, water status, photosynthesis, cell damage, and antioxidative and osmoprotective systems together with an iTRAQ analysis of the leaf proteome was performed in two inbred lines of maize (Zea mays L.) differing in drought susceptibility and their reciprocal F1 hybrids. The aim of this study was to dissect the parent-hybrid relationships to better understand the mechanisms of the heterotic effect and its potential association with the stress response. The results clearly showed that the four examined genotypes have completely different strategies for coping with limited water availability and that the inherent properties of the F1 hybrids, i.e. positive heterosis in morphological parameters (or, more generally, a larger plant body) becomes a distinct disadvantage when the water supply is limited. However, although a greater loss of photosynthetic efficiency was an inherent disadvantage, the precise causes and consequences of the original predisposition towards faster growth and biomass accumulation differed even between reciprocal hybrids. Both maternal and paternal parents could be imitated by their progeny in some aspects of the drought response (e.g., the absence of general protein down-regulation, changes in the levels of some carbon fixation or other photosynthetic proteins). Nevertheless, other features (e.g., dehydrin or light-harvesting protein contents, reduced chloroplast proteosynthesis) were quite unique to a particular hybrid. Our study also confirmed that the strategy for leaving stomata open even when the water supply is limited (coupled to a smaller body size and some other physiological properties), observed in one of our inbred lines, is associated with drought-resistance not only during mild drought (as we showed previously) but also during more severe drought conditions.

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“…It has also been reported that exogenous application of EBR to plants decreases the pesticide residues (Xia et al, 2009; Zhou et al, 2015; Sharma et al, 2016c,d). Phenolic compounds and pigments which act as antioxidants including anthocyanins, carotenoids, and xanthophylls also got enhanced after the exogenous application of EBR in different plants (Chen et al, 2011; Nakabayashi et al, 2014; Sharma et al, 2016a,d). Moreover, EBR application may also modulates gene expression in plants to enhance their resistance against pesticide stress (Xia et al, 2009; Sharma et al, 2015; Zhou et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Pre-sowing Seed Treatment with 24-Epibrassinolide Ameliorates Pesticide Stress in Brassica juncea L. through the Modulation of Stress Markers

et al. 2016

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The present experiment was designed to assess the effects of seed soaking with 24-epibrassinolide (EBR) on the physiology of Brassica juncea L. seedlings grown under imidacloprid (IMI) toxicity. Application of EBR increased the length of seedlings, dry weight, and pigment contents, polyphenols, total phenols, and organic acids under IMI toxicity. The expression of genes coding key enzymes of pigment, phenols, polyphenols, and organic acid biosynthetic pathways was also studied including CHLASE (chlorophyllase), PSY (phytoene synthase), CHS (chalcone synthase) and PAL (phenylalanine ammonialyase), CS (citrate synthase), SUCLG1 (succinyl Co-A ligase,), SDH (succinate dehydrogenase), FH (fumarate hydratase), MS (malate synthase). Multiple linear regression (MLR) analysis revealed that IMI application regressed negatively on seedling length, dry weight and total chlorophyll content. However, EBR seed treatment regressed positively on all the parameters studied. Moreover, interaction between IMI and EBR showed positive regression for growth parameters, content of pigments, total polyphenol, total phenol and malate, and expression of PSY and PAL. Negative interactions were noticed for the contents of fumarate, succinate and citrate, and expression of CHS and all genes studied related to organic acid metabolism. In conclusion, EBR enhanced the growth and contents of all studied metabolites by regulating the gene expression of B. juncea seedlings under IMI stress.

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The xanthophyll cycle and antioxidative defense system are enhanced in the wheat hybrid subjected to high light stress

Cited by 33 publications

References 45 publications

Different responses of photosystem and antioxidant defense system to three environmental stresses in wheat seedlings

Different responses of photosystem and antioxidant defense system to three environmental stresses in wheat seedlings

The disadvantages of being a hybrid during drought: A combined analysis of plant morphology, physiology and leaf proteome in maize

Pre-sowing Seed Treatment with 24-Epibrassinolide Ameliorates Pesticide Stress in Brassica juncea L. through the Modulation of Stress Markers

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