Differential accumulation of dehydrins in response to water stress for hybrid and common bermudagrass genotypes differing in drought tolerance

Hu, Longxing; Wang, Zhaolong; Du, Hongmei; Huang, Bingru

doi:10.1016/j.jplph.2009.07.008

Cited by 108 publications

(92 citation statements)

References 42 publications

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“…The vulnerability of living tissues to dehydration (Morin et al, 2007;Hu et al, 2010;Vilagrosa et al, 2010;Beikircher et al, 2013) was analyzed by benchtop dehydrating plants and comparing the leakage of electrolytes from 52 to 82 leaves per species at increasing levels of dehydration. After C determination, three to 10 circular discs (0.6 cm in diameter) were cut from each leaf by use of a cork borer while avoiding major leaf veins.…”

Section: Electrolyte Leakagementioning

confidence: 99%

Herb Hydraulics: Inter- and Intraspecific Variation in Three Ranunculus Species

et al. 2016

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(S.M.).The requirements of the water transport system of small herbaceous species differ considerably from those of woody species. Despite their ecological importance for many biomes, knowledge regarding herb hydraulics remains very limited. We compared key hydraulic features (vulnerability to drought-induced hydraulic decline, pressure-volume relations, onset of cellular damage, in situ variation of water potential, and stomatal conductance) of three Ranunculus species differing in their soil humidity preferences and ecological amplitude. All species were very vulnerable to water stress (50% reduction in whole-leaf hydraulic conductance [k leaf ] at 20.2 to 20.8 MPa). In species with narrow ecological amplitude, the drought-exposed Ranunculus bulbosus was less vulnerable to desiccation (analyzed via loss of k leaf and turgor loss point) than the humidhabitat Ranunculus lanuginosus. Accordingly, water stress-exposed plants from the broad-amplitude Ranunculus acris revealed tendencies toward lower vulnerability to water stress (e.g. osmotic potential at full turgor, cell damage, and stomatal closure) than conspecific plants from the humid site. We show that small herbs can adjust to their habitat conditions on interspecific and intraspecific levels in various hydraulic parameters. The coordination of hydraulic thresholds (50% and 88% loss of k leaf , turgor loss point, and minimum in situ water potential) enabled the study species to avoid hydraulic failure and damage to living cells. Reversible recovery of hydraulic conductance, desiccation-tolerant seeds, or rhizomes may allow them to prioritize toward a more efficient but vulnerable water transport system while avoiding the severe effects that water stress poses on woody species.

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Section: Electrolyte Leakagementioning

confidence: 99%

Herb Hydraulics: Inter- and Intraspecific Variation in Three Ranunculus Species

et al. 2016

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“…9 Further studies showed that abiotic stress treatments changed antioxidant enzyme activities, ROS contents, osmoprotectant contents (sugar, sucrose, dehydrin, proline), and photosynthesis. [1][2][5][6][10][11][12][13][14] Recently, proteomics and metabolomics approaches have been successfully used to detect omic level changes during bermudagrass stress responses. Under water-deficit condition, 32 proteins had increases in the abundance and 22 proteins exhibited decreases in the abundance, which were mainly involved in metabolism, energy, cell growth/division, protein synthesis and stress defense.…”

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confidence: 99%

Improved abiotic stress tolerance of bermudagrass by exogenous small molecules

Chan

Hong

2015

Plant Signaling & Behavior

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“…[36][37][38][39] More recently, study in tomato reported that overexpression of dehydrin tas14 gene helps in improving the drought stress tolerance. 40 The overexpression of OsDhn1 in transgenic rice plants enhanced drought stress tolerance as judged by chlorophyll fluorescence (Fv/Fm), fresh and dry weight, water and chlorophyll content, and suggested that OsDhn1 plays an important role in the stress tolerance via scavenging reactive oxygen species (ROS).…”

Section: Discussionmentioning

confidence: 99%

Ocimum sanctum leaf extract induces drought stress tolerance in rice

Pandey

Ansari²,

Tula

et al. 2016

Plant Signaling & Behavior

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Ocimum leaves are highly enriched in antioxidant components. Thus, its leaf extract, if applied in plants, is believed to efficiently scavenge ROS, thereby preventing oxidative damage under drought stress. Thus, the present study was performed in kharif 2013 and rabi 2014 season to evaluate the effect of aqueous leaf extract of Ocimum sanctum against drought stress in 2 rice genotype under glass house conditions. Here we show that various morpho-physiological (chlorophyll fluorescence, leaf rolling score, leaf tip burn, number of senesced leaves and total dry matter) and biochemical parameters (proline, malondialdehyde and superoxide dismutase content) were amended by Ocimum treatment in both the seasons. Application of Ocimum extract increased expression of dehydrin genes, while reducing expression of aquaporin genes in drought stressed rice plant. Thus, application of Ocimum leaf extract under drought stress can be suggested as a promising strategy to mitigate drought stress in economical, accessible and ecofriendly manner.

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Differential accumulation of dehydrins in response to water stress for hybrid and common bermudagrass genotypes differing in drought tolerance

Cited by 108 publications

References 42 publications

Herb Hydraulics: Inter- and Intraspecific Variation in Three Ranunculus Species

Herb Hydraulics: Inter- and Intraspecific Variation in Three Ranunculus Species

Improved abiotic stress tolerance of bermudagrass by exogenous small molecules

Ocimum sanctum leaf extract induces drought stress tolerance in rice

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