Differential responses of antioxidative system to chilling and drought in four rice cultivars differing in sensitivity

Guo, Zhenfei; Ou, Wenyan; Lu, Shengyong; Zhong, Qiao

doi:10.1016/j.plaphy.2006.10.024

Cited by 309 publications

(206 citation statements)

References 35 publications

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“…Furthermore, under shade, the positive effects of ABA on the drought effect became more evident. On the other hand, glutathione reductase (GR) and GSH are involved in the regeneration of AsA, the substrate of APX (Guo et al, 2006). In our study, the GSH contents significantly increased under drought with LL, which may also be considered as a reflection of a higher sensitivity to rapidly decomposing H 2 O 2 under LL.…”

Section: Discussionmentioning

confidence: 50%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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Section: Discussionmentioning

confidence: 50%

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Zhao

Duan

et al. 2011

Environmental and Experimental Botany

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“…H 2 O 2 , which resulted from the action of SOD, is toxic to cells. Therefore, it is important that H 2 O 2 be scavenged rapidly by the antioxidative defence system to water and oxygen (Guo et al 2006). The overexpression of SOD, if accompanied by enhanced H 2 O 2 scavenging mechanisms like CAT and POD enzyme activities, has been considered as an important antidrought mechanism to cope with oxidative stress during water deficit conditions (McKersie et al 1999).…”

Section: Discussionmentioning

confidence: 99%

“…The decline in CAT activity is regarded as a general response to many stresses (Herbinger et al 2002;Bakalova et al 2004;Jung 2004;Guo et al 2006;Pan et al 2006;Gunes et al 2008;Liu et al 2008). The reduction of CAT activity is supposedly due to the inhibition of enzyme synthesis or change in the assembly of enzyme subunits under stress conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the reactions of the plants to water stress differ significantly at various organizational levels depending upon intensity and duration of stress as well as plant species and its stage of development (Chaves et al 2003;Jung 2004;Dacosta & Huang 2007). There are many reports in the literature that underline the intimate relationship between enhanced or constitutive antioxidant enzyme activities and increased resistance to environmental stresses in several plant species, such as rice (Guo et al 2006), foxtail millet (Sreenivasulu et al 2000), tomato (Mittova et al 2000), sugar beet (Bor et al 2003), wheat (Khanna-Chopra & Selote 2007) and barley (Acar et al 2001).…”

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confidence: 99%

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Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Abedi¹,

Pakniyat²

2010

Czech J. Genet. Plant Breed.

287

116

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Abstract:The study was undertaken to identify the responses of antioxidant enzyme activities and their isozyme patterns in seedlings of 10 oilseed rape (Brassica napus L.) cultivars under drought stress conditions. Plants were grown under three irrigation regimes (FC; field capacity, 60% FC and 30% FC) in a greenhouse. Drought stress preferentially enhanced the activities of superoxide dismutase (SOD) and guaiacol peroxidase (POD) whereas it decreased catalase (CAT) activity. Licord with the highest level of enzyme activity under both optimum and limited irrigation regimes is reported as the most tolerant cultivar. Whereas Hyola 308 and Okapy, having the lowest enzymes activities, are mentioned as cultivars sensitive to drought stress. The native polyacrylamide gel electrophoresis (PAGE) analysis detected eight SOD isozymes. Oilseed rape leaves contained three isoforms of Mn-SOD and five isoforms of Cu/Zn-SOD. The expression of Mn-SOD was preferentially enhanced by drought stress. Five POD isoforms were detected in oilseed rape leaves. The intensities of POD-4 and -5 were enhanced under drought stress. According to the results, the appearance of new isozyme bands under drought stress conditions may be used as a biochemical marker to differentiate drought tolerant cultivars under drought stress.

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“…• C for 2 h and recovery at 28 (Guo et al 2006); 150 mM NaCl for 12 h for hypersaline treatment (at 28…”

Section: Subcellular Localizationmentioning

confidence: 99%

Expression analysis of nuclear W2-containing homologs of eukaryotic initiation factors in rice

Nie

Liu

et al. 2011

Biologia

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The W2 domain is a conserved domain found firstly at the C-terminus of several translation initiation factors, but its roles are unknown. Here we identified three W2 genes in rice (Oryza sativa L.) which were located to the nucleus. The expression profiles of the three genes in response to phytohormones and abiotic stresses were also analyzed. OsW2-1 expression was mainly affected by two classes of phytohormones, including abscisic acid and cytokinin, and some abiotic stresses such as dark, drought and hypersaline, while both OsW2-2 and OsW2-3 expression levels were down-regulated by 2,4-dichloro-phenoxyacetic acid treatment. Besides, OsW2-2 under chilling stress, and OsW2-3 under 3-indolebutyric acid, kinetin and salt treatments, also showed slight transcription reduction. Our results first suggest that the three W2 genes function in phytohormone signaling pathways, and OsW2-1 also interrelated with the resistance to abiotic stresses in rice. It implies that the homologs of translation initiation factors in nuclei have different functions from those in the cytoplasm in eukaryotic cells.

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Differential responses of antioxidative system to chilling and drought in four rice cultivars differing in sensitivity

Cited by 309 publications

References 35 publications

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Effect of drought and ABA on growth, photosynthesis and antioxidant system of Cotinus coggygria seedlings under two different light conditions

Antioxidant enzymes changes in response to drought stress in ten cultivars of oilseed rape (Brassica napus L.)

Expression analysis of nuclear W2-containing homologs of eukaryotic initiation factors in rice

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