Enhancing cytokinin synthesis by overexpressing<i>ipt</i>alleviated drought inhibition of root growth through activating ROS-scavenging systems in<i>Agrostis stolonifera</i>

Xu, Yi; Burgess, Patrick; Zhang, Xunzhong; Huang, Bingru

doi:10.1093/jxb/erw019

Cited by 137 publications

(86 citation statements)

References 75 publications

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“…Kentucky bluegrass, in contrast, showed no significant effect of drought stress on leaf superoxide dismutase activity (Zhang & Schmidt, ). Da Costa and Huang () reported a consistent decrease in both superoxide dismutase and catalase activities in the leaves of creeping bentgrass when exposed to prolonged water‐deficit, and similar decreases in superoxide dismutase expression were reported in the roots of drought‐stressed creeping bentgrass (Xu et al., ). Root catalase activity was substantially higher and peroxidase activity was decreased, while glutathione and total ascorbate content remained unaffected (Xu et al., ).…”

Section: Effects Of Drought On Metabolism Of Cool‐season Grassessupporting

confidence: 58%

“…Increases in membrane damage are often observed in drought‐stressed plants, and significant increases in electrolyte leakage have been reported in cool‐season grasses, including creeping bentgrass (Burgess & Huang, ,b; Merewitz, Gianfagna, & Huang, ; Xu, Burgess, Zhang, & Huang, ), tall fescue (Huang & Gao, ; Yu, Chen, et al., ), perennial ryegrass (AbdElgawad, Farfan‐Vignolo, et al., ; Farfan‐Vignolo & Asard, ), and Kentucky bluegrass (Abraham, Meyer, Bonos, & Huang, ; Jiang & Huang, 2001b; Yang, Xu, Yu, DaCosta, & Huang, ). However, Yu, Chen, et al.…”

Section: Effects Of Drought Stress On Cool‐season Grass Physiologymentioning

confidence: 99%

“…Oxidative damage, due to overproduction of reactive oxygen species such as superoxide anion (O 2− ) and hydrogen peroxide (H 2 O 2 ) and manifested through lipid peroxidation, protein degradation, and carbohydrate consumption, has been closely associated with drought stress (Halliwell, ; Smirnoff, ). Increased lipid and protein peroxidation under conditions of drought stress have been recorded in several grass species (Da Costa & Huang, ; Farfan‐Vignolo & Asard, ; Fu & Huang, ; Jiang & Huang, ,b; Merewitz et al., ; Xu et al., ). Nevertheless, the extent of damage is strongly dependent on plant species, duration, and timing of stress, as well as the type of tissue (Jiang & Huang, ,b; Xu et al., ), with substantial variation existing also within species (Kosmala et al., ).…”

Section: Effects Of Drought On Metabolism Of Cool‐season Grassesmentioning

confidence: 99%

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Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

Loka

Harper

Humphreys

et al. 2018

Food and Energy Security

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Grasslands cover more than 70% of the world's agricultural land playing a pivotal role in global food security, economy, and ecology due to their flexibility and functionality. Climate change, characterized by changes in temperature and precipitation patterns, and by increased levels of greenhouse gases in the atmosphere, is anticipated to increase both the frequency and severity of extreme weather events, such as drought, heat waves, and flooding. Potentially, climate change could severely compromise future forage crop production and should be considered a direct threat to food security. This review aimed to summarize our current understanding of the physiological and metabolic responses of temperate grasses to those abiotic stresses associated with climate change. Primarily, substantial decreases in photosynthetic rates of cool‐season grasses occur as a result of high temperatures, water‐deficit or water‐excess, and elevated ozone, but not CO2 concentrations. Those decreases are usually attributed to stomatal and non‐stomatal limitations. Additionally, while membrane instability and reactive oxygen species production was a common feature of the abiotic stress response, total antioxidant capacity showed a stress‐specific response. Furthermore, climate change‐related stresses altered carbohydrate partitioning, with implications for biomass production. While water‐deficit stress, increased CO2, and ozone concentrations resulted in higher carbohydrate content, the opposite occurred under conditions of heat stress and flooding. The extent of damage is greatly dependent on location, as well as the type and intensity of stress. Fortunately, temperate forage grass species are highly heterogeneous. Consequently, through intra‐ and in particular inter‐specific plant hybridization (e.g., Festuca x Lolium hybrids) new opportunities are available to harness, within single genotypes, gene combinations capable of combating climate change.

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Section: Effects Of Drought On Metabolism Of Cool‐season Grassessupporting

confidence: 58%

Section: Effects Of Drought Stress On Cool‐season Grass Physiologymentioning

confidence: 99%

Section: Effects Of Drought On Metabolism Of Cool‐season Grassesmentioning

confidence: 99%

See 1 more Smart Citation

Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

Loka

Harper

Humphreys

et al. 2018

Food and Energy Security

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“…Under stressed conditions cytokinins progress cell division and elongation so that younger leaves could carry on as sink. Diminished cytokinins production by the roots is associated with drought stress, which can possibly hasten senescence in the older leaves by hindering its generation (Xu et al, 2016). Acid invertase is assumed to be an imperative part in the carbohydrate metabolism, which is definitely recognized with the remobilization of storage reserves from leaves or stems (Zinselmeier et al, 2000), its action is likewise impeded by drought stress (Zinselmeier et al, 1995).…”

Section: Effect Of Drought On Plant Developmental Processesmentioning

confidence: 99%

Growth and developmental responses of crop plants under drought stress: a review

Anjum¹,

Ashraf

Zohaib³

et al. 2017

Zemdirbyste-Agriculture

170

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Please use the following format when citing the article: Anjum S. A., Ashraf U., Zohaib A., Tanveer M., Naeem M., Ali I., Nazir U., Tabassum T. AbstractWater deficit conditions are a bearing on plant growth and development leading to diminished crop productivity. However, improving the crop productivity is need of the time to sustain the food security under ever increasing world population. Drought episodes are increasing with varying intensity and duration. Drought stress imposes alterations in crucial plant growth and developmental processes, including germination, plant height, stem diameter, number of leaves, leaf size and area, dry matter production and partitioning, flower and fruit production, and maturity. Nonetheless, plants show some morphological changes to cope with drought stress by lowering water loss, enhanced water uptake and maintenance of tissue water status. Some plants complete their life cycle early before the onset of drought to escape water deficit conditions. Identification of effects of drought stress on morphological attributes and morphological changes in response to drought can be promising for selection and breeding of drought resistant genotypes.

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“…ROS generation is considered to be closely related to lipid peroxidation under drought stress (Ryan et al., ; Uzilday et al., ). For example, lipid peroxidation analysis showed that transgenic Agrostis stolonifera L. root exhibited less cellular damage when compared with the wild type under drought stress conditions (Xu et al., ). The alleviation of adverse effects of drought stress is partially attributable to an increased antioxidant ability and decreased lipid peroxidation induced by early ROS accumulation (Xing et al., ).…”

Section: Discussionmentioning

confidence: 99%

Tolerance strategies revealed in tree peony (Paeonia suffruticosa; Paeoniaceae) ecotypes differentially adapted to desiccation

Guo

Yin

et al. 2018

Appl Plant Sci

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Premise of the StudyTree peony (Paeonia suffruticosa; Paeoniaceae) is well known for its ornamental value, edible oil, and medicinal properties. However, its growing area has been limited by drought that has been exacerbated by global climate change.MethodsGene expression profiles of a drought‐tolerant cultivar and a drought‐sensitive cultivar during dehydration and rehydration were investigated by transcriptome analysis. Expression patterns of unigenes related to drought and recovery response and unrelated to either cultivar were classified by hierarchical clustering and real‐time quantitative PCR (qPCR).ResultsA total of 81,725 unigenes with a mean length of 762 nucleotides that may play roles in drought response were identified. Unigenes were characterized as being involved in lipid transport metabolism, proline metabolism, and photosynthesis. In addition, plant hormone signaling pathway genes were also characterized as potentially being involved in drought response. Expression patterns of the 20 drought‐responsive unigenes verified by qPCR showed a differential expression pattern under either the drought or recovery treatment.DiscussionThis is the first report to identify and verify unigenes of tree peonies with differing water sensitivity during dehydration and rehydration. This study offers a valuable resource for candidate genes involved in drought and provides insight into the breeding of drought‐resistant tree peony cultivars.

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Enhancing cytokinin synthesis by overexpressingiptalleviated drought inhibition of root growth through activating ROS-scavenging systems inAgrostis stolonifera

Abstract: HighlightThe relationship between an adenine isopentenyltransferase transgene, reactive oxygen species (ROS) content and the ROS-scavenging system, mechanistically contributing to improved root growth under drought stress in creeping bentgrass, is discussed.

Cited by 137 publications

References 75 publications

Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

Impacts of abiotic stresses on the physiology and metabolism of cool‐season grasses: A review

Growth and developmental responses of crop plants under drought stress: a review

Tolerance strategies revealed in tree peony (Paeonia suffruticosa; Paeoniaceae) ecotypes differentially adapted to desiccation

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