Morphological and physiological responses of two contrasting Malus species to exogenous abscisic acid application

Ma, Xiaoling; Ma, Fengwang; Mi, Yinfa; Ma, Yuntong; Shu, Huairui

doi:10.1007/s10725-008-9287-2

Cited by 35 publications

(27 citation statements)

References 49 publications

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“…Increased concentrations of H 2 O 2 lead to lipid peroxidation, causing membrane damage and leakage of electrolytes (Sairam and Srivastava 2002;Ma et al 2008a). MDA is a product of lipid peroxidation in cell membranes (Bailly et al 1996;Shah et al 2001), and its content in vivo can indicate the extent of oxidative stress in plants and membrane homeostasis.…”

Section: Discussionmentioning

confidence: 99%

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Wang

et al. 2010

Plant Growth Regul

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We studied the physiological responses to abscisic acid (ABA) when 2-year-old potted plants of kiwifruit (Actinidia deliciosa) were grown under moisture stress. Leaves treated with 60 lM exogenous ABA through various means had less severe damage when water was limiting, and sprayed plants showed relatively greater drought resistance. This indicates that ABA improves tolerance in kiwifruit, reducing membrane permeability and enhancing the activities of antioxidant enzymes, e.g., peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR). Exposure to ABA led to higher levels of antioxidants, such as ABA and glutathione (GSH), while altering the amounts of endogenous hormones-ABA, indole-3-acetic acid (IAA), and Gibberellin (GA)-and organic oxalate, malate, and citrate in the leaves. Although daily applications of ABA were more effective than a single spray event, the effect of treatment, i.e., avoiding tissue damage and increasing plant resistance, was more apparent on Day 4 than on Day 6. No difference in response was apparent between control plants (regular irrigation) and those sprayed with ABA on Day 4 of the drought period.

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Section: Discussionmentioning

confidence: 99%

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Wang

et al. 2010

Plant Growth Regul

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“…Abscisic acid (ABA), as a stress signal, enhances the tolerance of plants to several environmental stresses, including low temperature (Verslues and Zhu, 2005), salt (Bellaire et al, 2000), and drought (Ma et al, 2008). The increased tolerance is partly due to an enhanced antioxidant defense system that includes SOD, CAT, APX, and GR (Bellaire et al, 2000), and the AsA and GSH, which prevent the accumulation of ROS (Jiang and Zhang, 2002).…”

Section: Introductionmentioning

confidence: 99%

Exogenous abscisic acid increases antioxidant enzymes and related gene expression in pepper (Capsicum annuum) leaves subjected to chilling stress

Guo¹,

Chen²,

Gong³

et al. 2012

Genet. Mol. Res.

114

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ABSTRACT. To elucidate how physiological and biochemical mechanisms of chilling stress are regulated by abscisic acid (ABA) pretreatment, pepper variety (cv. 'P70') seedlings were pretreated with 0.57 mM ABA for 72 h and then subjected to chilling stress at 10°/6°C (day/night). Chilling stress caused severe necrotic lesions on the leaves and increased malondialdehyde and H 2 O 2 levels. Activities of monodehydroascorbate reductase (DHAR), dehydroascorbate reductase, glutathione reductase, guaiacol peroxidase, ascorbate peroxidase, ascorbate, and glutathione increased due to chilling stress during the 72 h, while superoxide dismutase and catalase activities decreased during 24 h, suggesting that chilling stress activates the AsA-GSH cycle under catalase deactivation in pepper leaves. ABA pretreatment induced significant increases in the above-mentioned enzyme activities and progressive decreases in ascorbate and glutathione levels. On the other hand, ABA-pretreated seedlings under chilling stress increased superoxide dismutase and guaiacol peroxidase activities and lowered concentrations of other antioxidants compared with untreated chilling-stressed plants. These seedlings showed concomitant decreases in foliage damage symptoms, and levels of malondialdehyde and H 2 O 2 . Induction of Mn-SOD and POD was observed in chilling-stressed plants treated with ABA. The expression of DHAR1 and DHAR2 was altered by chilling stress, but it was higher in the presence than in the absence of ABA at 24 h. Overall, the results indicate that exogenous application of ABA increases tolerance of plants to chilling-induced oxidative damage, mainly by enhancing superoxide dismutase and guaiacol peroxidase activities and related gene expression.

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“…It is often cultivated in arid and semi-arid areas, e.g., China's Loess Plateau and Washington State in the United States. Much is known about responses of growth, physiological characteristics (Atkinson et al 2000;Cao et al 2004;Ma et al 2008) and WUE (Jie et al 2001;Glenn 2010) in apple trees to water deficits. Differences in water use and the relationships among WUE, growth, biomass allocation, and d 13 C have been researched in ten Malus rootstocks (Ma et al 2010) and 'Gale Gala' trees grafted onto nine genotypic rootstocks (unpublished), but have not been thoroughly studied among apple cultivars.…”

Section: Introductionmentioning

confidence: 99%

Growth, biomass allocation, and water use efficiency of 31 apple cultivars grown under two water regimes

Liu

Cheng

et al. 2011

Agroforest Syst

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Plant growth, biomass allocation, carbon isotope composition (d 13 C), and water use efficiency (WUE) of 31 cultivars of apple (Malus domestica Borkh.) grown under two water regimes were measured. Drought-stressed plants showed significant declines in tree height, trunk diameter, biomass production, and total leaf area, the extent to which depended upon cultivar. Also, gas exchange rates, instantaneous and long-term efficiencies (WUE I and WUE L , respectively), and values for d 13 C differed among cultivars and watering regimes. Variations in WUE I were mainly due to changes in stomatal conductance (g s ) under drought condition. 'Qinguan' and 'Golden Delicious' had greater trunk diameter, tree height, and had higher biomass production and WUE L under drought stress, implying that they are more suitable for arid and semi-arid regions. Moreover, WUE L was significantly and positively correlated with d 13 C under two watering regimes, which suggests a potential for evaluating water use efficiency of Malus by measuring carbon isotope composition.

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Morphological and physiological responses of two contrasting Malus species to exogenous abscisic acid application

Cited by 35 publications

References 49 publications

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Exogenous abscisic acid increases antioxidant enzymes and related gene expression in pepper (Capsicum annuum) leaves subjected to chilling stress

Growth, biomass allocation, and water use efficiency of 31 apple cultivars grown under two water regimes

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