Soil-Water Threshold Range of Chemical Signals and Drought Tolerance Was Mediated by ROS Homeostasis in Winter Wheat During Progressive Soil Drying

Wang, Zhenyu; Li, Fengmin; Xiong, You‐Cai; Xu, Bin

doi:10.1007/s00344-008-9057-4

Cited by 49 publications

(52 citation statements)

References 39 publications

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“…Lascano et al (2001) reported higher APX, GR and GST activity in wheat cultivars with broad abiotic stress tolerance. In another study, a modern cultivar with good drought tolerance was found to generate more ROS-scavenging enzymes than an old cultivar with a lower level of tolerance (Wang et al, 2008). In the present experiment enhanced GST and APX activity was observed for Mv Mambó, while the CAT activity of this variety was outstanding.…”

Section: Discussionsupporting

confidence: 48%

Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions

Varga

Bencze

Janda

et al. 2013

Acta Agronomica Hungarica

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The impacts of climate modification were examined in terms of changes in the stress tolerance of winter wheat varieties. The enzyme reactions of two winter wheat varieties to drought stress, simulated by water withholding in three different phenophases, were analysed in a phytotron experiment in the Centre for Agricultural Research, Hungarian Academy of Sciences. Plants were raised either at ambient CO 2 level or at twice this concentration. The quantities of glutathione reductase (GR), glutathione-S-transferase (GST), catalase (CAT), guaiacol peroxidase (POD) and ascorbate peroxidase (APX) were determined from leaf samples collected at the end of the drought treatment.The results showed that antioxidant enzymes may help to counterbalance the reactive oxygen species induced by stress during various stages of the vegetation period. Although there were substantial differences in the changes induced in the activity of individual enzymes by modifications in environmental factors, this activity and its response to stress depended not only on these factors, but also on the developmental stage of the plant. Modifications in enzyme activity could indicate that enhanced CO 2 concentration delayed the development of drought stress up to first node appearance, and stimulated antioxidant enzyme activity when drought occurred during ripening.

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Section: Discussionsupporting

confidence: 48%

Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions

Varga

Bencze

Janda

et al. 2013

Acta Agronomica Hungarica

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“…SOD, CAT and PODs are key antioxidants involved in detoxification of superoxide and hydrogen peroxide respectively [9]. ROS homeostasis has been proposed as a regulator in relationships between the soilewater threshold range of chemical signals and drought tolerance [24]. In present study, different antioxidant response of genotypes under different water stress levels was observed.…”

Section: Discussionmentioning

confidence: 93%

Differential changes in antioxidants, proteases, and lipid peroxidation in flag leaves of wheat genotypes under different levels of water deficit conditions

Hameed

Bibi

Akhter

et al. 2011

Plant Physiology and Biochemistry

120

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“…, Wang et al. ). However, the sensitivity of stomata to soil drying, the role of OA and the yield performance of landraces and new cultivars of soya bean under conditions of water scarcity were not clear.…”

Section: Introductionmentioning

confidence: 99%

“…During progressive soil drying, the roots have been shown to produce phytohormones such as abscisic acid (ABA; Gollan et al 1992, Turner andHartung 2012) that are transferred to the leaves to reduce stomatal conductance (g s ) before leaf hydration decreases (Zhang and Davies 1990, Gollan et al 1992, Liu et al 2003. The ability to regulate the stomatal closure under drought stress varied in different wheat genotypes (Xiong et al 2006, Wang et al 2008, Guan et al 2014. Fan et al (2009) found that the leaf ABA concentration significantly increased when the stomatal significantly decreased during the progressive soil drying.…”

Section: Introductionmentioning

confidence: 99%

Old and New Cultivars of Soya Bean (Glycine max L.) Subjected to Soil Drying Differ in Abscisic Acid Accumulation, Water Relations Characteristics and Yield

Wang

et al. 2015

J Agronomy Crop Science

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Two old (Huangsedadou and Longxixiaohuangpi (LX)) and two new (Jindou 19 (JD) and Zhonghuang 30 (ZH)) soya bean (Glycine max (L.) Merr.) cultivars were used to investigate the influence of soil drying on the abscisic acid (ABA) accumulation in leaves, stomatal conductance (g s ), leaf water relations, osmotic adjustment (OA), leaf desiccation tolerance, yield and yield components. The greater ABA accumulation was induced by soil drying, which also inducing g s decreased at higher soil water contents (SWC) and leaf relative water content (RWC) significantly decreased at lower SWC in the new soya bean cultivars than in the old soya bean cultivars. The soil water threshold between the value at which stomata began to close and the RWC began to decrease was significantly broader in the new cultivars than in the old cultivars. The new cultivars had significantly higher OA and lower lethal leaf water potential than old cultivars when the soil dried. The old cultivars had greater biomass, but lower grain yield than the new cultivars in well-watered, moderate stress and severe stress conditions. Thus with soil drying, the new soya bean cultivars demonstrated greater adaptation to drought by inducing greater ABA accumulation, stomatal closure at higher SWC, enhanced OA and better water relations, associated with increased leaf desiccation tolerance, greater water use efficiency and higher yield.

show abstract

Soil-Water Threshold Range of Chemical Signals and Drought Tolerance Was Mediated by ROS Homeostasis in Winter Wheat During Progressive Soil Drying

Cited by 49 publications

References 39 publications

Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions

Study of the effect of abiotic stress on the antioxidant enzyme activity of cereals under regulated environmental conditions

Differential changes in antioxidants, proteases, and lipid peroxidation in flag leaves of wheat genotypes under different levels of water deficit conditions

Old and New Cultivars of Soya Bean (Glycine max L.) Subjected to Soil Drying Differ in Abscisic Acid Accumulation, Water Relations Characteristics and Yield

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