Effects of penconazole and water deficit stress on physiological and antioxidative responses in pennyroyal (Mentha pulegium L.)

Hassanpour, Halimeh; Khavari-Nejad, Ramazan Ali; Niknam, Vahid; Najafi, Farzaneh; Razavi, Khadijeh

doi:10.1007/s11738-012-0952-8

Cited by 33 publications

(28 citation statements)

References 38 publications

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“…In drought-tolerant plant species, POD activity was found to be sufficiently high to enable the plants to protect themselves against oxidative stress (Fazeli et al 2007, Vaseva et al 2012). Activity of one or more antioxidant enzymes generally increases in plants exposed to drought conditions, and this elevated activity correlates with increased drought tolerance (Srivalli et al 2003, Hojati et al 2011, Hassanpour et al 2012. Findings from the present study showed that POD activity in the tolerant cultivar HST was higher than those in the sensitive one LC15 (Figure 2c).…”

Section: Resultssupporting

confidence: 50%

“…It was accepted that SODs are localized in chloroplasts, mitochondria, peroxisomes and the cytosol; POD activities are distributed in vacuoles, the cell walls and the cytosol, whereas CAT enzymes are presented only in peroxisomes (Vaseva et al 2012). The drought-induced changes in activities of SOD, POD and CAT were detected in a large number of plant species, such as Oryza sativa (Srivalli et al 2003), Sesamum indicum (Fazeli et al 2007), Carthamus tinctorius (Hojati et al 2011), Mentha pulegium (Hassanpour et al 2012), and Trifolium pratense (Vaseva et al 2012). These findings suggest that the induction of ROS-scavenging enzymes, such as SOD, POD and CAT, is the most common mechanism of drought tolerance for detoxifying ROS synthesized.…”

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confidence: 99%

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Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

Wu¹,

Zhang²,

Wang³

2012

Plant Soil Environ.

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To investigate the responses of growth and antioxidant enzymes to osmotic stress in two different wheat cultivars, one drought tolerant (Heshangtou, HST) and the other drought sensitive (Longchun 15, LC15), 15-day-old wheat seedlings were exposed to osmotic stress of -0.25, -0.50, and -0.75 MPa for 2 days. It is found that osmotic stress decreased shoot length in both wheat cultivars, whereas to a lesser degree in HST than in LC15. The contents of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) of shoot in both wheat cultivars were increased by osmotic stress. It is clear that MDA contents increased less in the more drought tolerant cultivar HST than in drought sensitive one LC15. On the contrary, POD and CAT activities increased more in HST than LC15 under osmotic stress. As the activity of SOD, however, no significant differences were found between HST and LC15. These results suggest that wheat cultivar HST has higher activities of antioxidant enzymes such as POD and CAT to cope with oxidative damage caused by osmotic stress compared to sensitive LC15.

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Section: Resultssupporting

confidence: 50%

mentioning

confidence: 99%

Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

Wu¹,

Zhang²,

Wang³

2012

Plant Soil Environ.

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“…It was reported that high salinity tolerance of wheat cultivars was associated with higher activities of antioxidant enzymes, increased accumulation of proline, and reduced levels of H 2 O 2 as compared to the sensitive cultivar (Hassanpour et al, 2012). Similar relationships were also reported under cold stress (Xuan et al, 2013) Yue et al (2010) and Liu et al (2007) reported that activities of antioxidant enzymes were different depending on plant cultivars.…”

Section: Discussionmentioning

confidence: 56%

Differential Frost Tolerance and Enzymatic Activities in the Leaves and Immature Fruits of Loquat (Eriobotrya japonica Lindl.)

Zheng¹,

Niu²,

Zhang³

et al. 2015

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In this experiment, five commercial cultivars and one wild species of loquat were used to investigate frost tolerance and enzymatic activities in leaves and young fruits under cold stress at -3°C. The frost injury, malondialdehyde (MDA) content, and oxygen-scavenging enzyme activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX) were studied. This results showed that the wild species 'Wild Oak-leaf' loquat was the most frost tolerant among accessions tested, followed by the cultivar 'Golden Block'. Other cultivars, 'Wu Gong Bai', 'Taicheng 4', 'Xiangzhong 11' and 'Zaozhong 6', were relatively weak in frost tolerance. The enzymatic activities of SOD, POD and CAT increased initially and then decreased as the exposure time increased. However, the enzymatic peak occurred later in the frost-tolerant accession than in the frost-sensitive accession. The correlation coefficients of MDA contents between leaves and immature fruits were from 0.93 to 0.99 in the five commercial loquat cultivars. For the 'Wild Oak-leaf' loquat, the correlation coefficients of MDA and POD were 0.98 and 0.95, respectively, but the coefficients for SOD, CAT and APX were relatively low. In general, there were good correlations between loquat leaves and immature fruits in MDA content and enzyme activities. These results indicate that analysis of these physiological and biochemical activities in loquat leaves could potentially be used to predict the cold tolerance in loquat at immature fruit stage and to accelerate breeding programs for cold tolerance in loquat.

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“…Al respecto, Trujillo et al (2006) y Hassanpour et al (2012), mencionan que esta enzima se encuentra localizada exclusivamente en plastidios y es liberada al citososol como consecuencia de un daño o senescencia.…”

Section: Polifenol Oxidasa (Pfo)unclassified

Actividad enzimática y capacidad antioxidante en menta (Mentha piperita L.) almacenada bajo refrigeración

et al. 2013

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Effects of penconazole and water deficit stress on physiological and antioxidative responses in pennyroyal (Mentha pulegium L.)

Cited by 33 publications

References 38 publications

Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

Differential Frost Tolerance and Enzymatic Activities in the Leaves and Immature Fruits of Loquat (Eriobotrya japonica Lindl.)

Actividad enzimática y capacidad antioxidante en menta (Mentha piperita L.) almacenada bajo refrigeración

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