Differences in growth and physiological traits of Populus cathayana populations as affected by enhanced UV-B radiation and exogenous ABA

Lu, Yanwei; Duan, Baoli; Zhang, Xiaolu; Korpelainen, Helena; Li, Chunyang

doi:10.1016/j.envexpbot.2008.12.006

Cited by 21 publications

(11 citation statements)

References 66 publications

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“…Jansen et al, 2001 found that an increased peroxidase activity highly correlated with increased tolerance to UV radiation. Yannarelli, Gallego, and Tomaro (2006), Lu, Duan, Zhang, Korpelainen, andLi (2009), andRen, Duan, Zhang, Korpelainen, andLi (2010) supported this assumption and reported the ability of peroxidases to scavenge free radicals and, thus, alleviate UV stress.…”

Section: Introductionmentioning

confidence: 66%

UV-B-mediated flavonoid synthesis in white asparagus (Asparagus officinalis L.)

Eichholz

Rohn

Gamm

et al. 2012

Food Research International

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Section: Introductionmentioning

confidence: 66%

UV-B-mediated flavonoid synthesis in white asparagus (Asparagus officinalis L.)

Eichholz

Rohn

Gamm

et al. 2012

Food Research International

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“…The increase in the CAT, APX, and SOD activities are frequently observed under stressful conditions (Yazici et al 2007, Mishra et al 2009). Lu et al (2009) reported that UV-B and exogenous ABA stresses significantly increased the activities of CAT, SOD, and GPX. The present result suggests that antioxidative systems play an important role in protecting Korean pine against increased UV-B damage.…”

Section: Discussionmentioning

confidence: 99%

Responses in the physiology and biochemistry of Korean pine (Pinus koraiensis) under supplementary UV-B radiation

Zu¹,

Wei²,

Yu³

et al. 2011

Photosynt.

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The effect of supplementary UV-B radiation on Korean pine (Pinus koraiensis Sieb. et Zucc) was investigated. Compared with the control, the T1, T2, and T3 UV-B treatments increased by 1.40, 2.81, and 4.22 kJ m -2 d -1 , respectively. Gas-exchange parameters, photosynthetic pigment concentrations, contents of secondary metabolites, epicuticular wax, free radical, malondialdehyde (MDA), and the activities of antioxidant enzymes were determined after 40 d of exposure. The concentrations of chlorophyll (Chl) a, Chl b, total Chl, carotenoid (Car), and the ratio Chl a/b in the pine needles were in the following order: T1 > T2 > T3. Compared with the control, the contents of flavonoids and epicuticular wax significantly decreased in all levels of supplementary UV-B radiations (p<0.05). Moreover, the contents of hydrogen peroxide (H 2 O 2 ) and MDA significantly increased with the enhanced UV-B radiations (p<0.05). Korean pine can increase the catalase, ascorbate peroxidase, and superoxide dismutase activities to prevent oxidative stress by supplementary UV-B radiation. However, its defence mechanism is not efficient enough to prevent UV-Binduced damage.

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“…Abscisic acid (ABA) is an essential mediator in triggering the plant responses to many environmental stresses (Zhu, 2002;Lu et al, 2009). ABA can increase the activity of the reactive oxygen species (ROS) scavenging enzymes, superoxide dismutase (SOD) and catalase (CAT), and reduce malondialdehyde (MDA) formation (Lei et al, 2006;Duan et al, 2007).…”

Section: Introductionmentioning

confidence: 99%