Jasmonic Acid Differentially Affects Growth, Ion Uptake and Abscisic Acid Concentration in Salt‐tolerant and Salt‐sensitive Rice Cultivars

Kang, Dong-Kyoon; Seo, Young-Jin; Lee, J.-D.; Ishii, Ryuichi; Kim, K. U.; Shin, Dong Hyun; Park, S. K.; Jang, Soo‐Won; Lee, I.-J.

doi:10.1111/j.1439-037x.2005.00153.x

Cited by 220 publications

(116 citation statements)

References 75 publications

(145 reference statements)

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“…The level of endogenous ABA was quantified by gas chromatography-mass spectrometry (GC-MS) as described previously [22][23][24][25][26]. Plants were immediately frozen in liquid nitrogen.…”

Section: Measurement Of Endogenous Aba By Gas Chromatography-mass Spementioning

confidence: 99%

A vacuole localized β-glucosidase contributes to drought tolerance in Arabidopsis

et al. 2011

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The phytohormone abscisic acid (ABA) plays a critical role in plant growth, development, and adaptation to various stress conditions. The cellular ABA level is constantly adjusted to respond to changing physiological and environmental conditions. To date, the mechanisms for fine-tuning ABA levels remain elusive. Here, we report that BGLU10, a member of a multigene family of β-glucosidases, contributes to drought tolerance in Arabidopsis. The T-DNA insertion mutant bglu10 exhibited a droughtsensitive phenotype, characterized by an increased rate of water loss, and lower leaf temperature, β-glucosidase activity, ABA content, and expressions of ABA-and drought-responsive genes under drought stress. In contrast, lines overexpressing BGLU10 showed greater drought resistance than that of the wild-type, as shown by decreased water loss via transpiration, higher β-glucosidase activity, ABA level, and expressions of ABA-and stress-responsive genes under drought stress. Transient expression of BGLU10::GFP and γ-TIP1::RFP in mesophyll cell protoplasts showed that the BGLU10 enzyme protein was localized to the vacuole. Meanwhile, BGLU10 was expressed in various organs, and was induced by several abiotic stresses, suggesting that BGLU10 may be involved in a variety of stress responses, and that hydrolysis of ABA-GE produces free ABA in the plant stress response.Arabidopsis, β-glucosidase, BGLU10, ABA, drought Citation: Wang P T, Liu H, Hua H J, et al. A vacuole localized β-glucosidase contributes to drought tolerance in Arabidopsis.

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“…The level of endogenous ABA was quantified by gas chromatography-mass spectrometry (GC-MS) as described previously [22][23][24][25][26]. Plants were immediately frozen in liquid nitrogen.…”

Section: Measurement Of Endogenous Aba By Gas Chromatography-mass Spementioning

confidence: 99%

A vacuole localized β-glucosidase contributes to drought tolerance in Arabidopsis

et al. 2011

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“…However, it is becoming increasingly evident that these compounds have direct and/or indirect roles in abiotic stresses. Thus, several researches showed that JAs levels were increased upon exposure to drought and salt stresses [30] [13]. Some studies demonstrated that JA accumulation during drought is not stable; for example, water-stressed soybean plants exhibited a transient increase in JA, followed by a decrease to below wild-type levels [31].…”

Section: Effect Of Ja On Plant Growth Responses Under Drought and Salmentioning

confidence: 99%

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Llanes¹,

Andrade²,

Alemano³

et al. 2016

AJPS

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The phytohormones are pivotal chemical messengers produced within the plant that regulate its growth and development, and responses to environmental stimuli. Drought and salinity are adverse environmental factors that disturb the plant hormonal balance. Accordingly, these hormonal fluctuations modify the cellular dynamic and hence they play a central role in regulating plant growth responses to abiotic stresses such as drought and salinity. The present review gives an update about the alterations of endogenous phytohormones such as abscisic acid (ABA), auxins (Aux), cytokinins (CKs), ethylene (ET), gibberellins (GAs), jasmonates (JAs), salicylic acid (SA), brassinosteroids (BRs), strigolactones (SLs) and nitric oxide (NO) that occur as part of the adaptative responses of plant against drought and salt stresses. Better understanding of the endogenous hormonal changes during the plant response to both abiotic stresses will contribute, in part, to the development of stress-tolerant plants.

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“…Levels of ABA were measured following the method of Kang et al (2005). Approximately 0.1 g of S1 panicles was collected and extracted with an extraction solution containing 95% isopropanol, 5% glacial acetic acid, and an internal standard, [(6)-3,5,5,7,7,7-d 6 ]ABA.…”

Section: Measurements Of Meja and Abamentioning

confidence: 99%

Methyl Jasmonate Reduces Grain Yield by Mediating Stress Signals to Alter Spikelet Development in Rice

et al. 2009

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Jasmonic acid (JA) is involved in plant development and the defense response. Transgenic overexpression of the Arabidopsis (Arabidopsis thaliana) jasmonic acid carboxyl methyltransferase gene (AtJMT) linked to the Ubi1 promoter increased levels of methyl jasmonate (MeJA) by 6-fold in young panicles. Grain yield was greatly reduced in Ubi1:AtJMT plants due to a lower numbers of spikelets and lower filling rates than were observed for nontransgenic (NT) controls. Ubi1:AtJMT plants had altered numbers of spikelet organs, including the lemma/palea, lodicule, anther, and pistil. The loss of grain yield and alteration in spikelet organ numbers were reproduced by treating NT plants with exogenous MeJA, indicating that increased levels of MeJA in Ubi1:AtJMT panicles inhibited spikelet development. Interestingly, MeJA levels were increased by 19-fold in young NT panicles upon exposure to drought conditions, resulting in a loss of grain yield that was similar to that observed in Ubi1:AtJMT plants. Levels of abscisic acid (ABA) were increased by 1.9-and 1.4-fold in Ubi1:AtJMT and drought-treated NT panicles, respectively. The ABA increase in Ubi1:AtJMT panicles grown in nondrought conditions suggests that MeJA, rather than drought stress, induces ABA biosynthesis under drought conditions. Using microarray and quantitative polymerase chain reaction analyses, we identified seven genes that were regulated in both Ubi1:AtJMT and drought-treated NT panicles. Two genes, OsJMT1 and OsSDR (for short-chain alcohol dehydrogenase), are involved in MeJA and ABA biosynthesis, respectively, in rice (Oryza sativa). Overall, our results suggest that plants produce MeJA during drought stress, which in turn stimulates the production of ABA, together leading to a loss of grain yield.Rice (Oryza sativa), the model system for the study of monocotyledonous plants, is a cereal crop consumed by more than half of the world's population. As such, improvements in grain yield are an important focus of research. Since rice plants grow in a paddy field, they are susceptible to water stress and in particular to drought (Yang et al., 2004(Yang et al., , 2007. Approximately 20% of the total worldwide rice growing area is prone to drought (Pandey et al., 2007), and drought is one of the major constraints to rice production worldwide. Although drought conditions can alter the growth and development of rice at any time during its life cycle, drought stress during reproductive growth, but not during vegetative growth, results in a loss of grain yield.Immediately following the transition of rice plants to the reproductive phase, the vegetative meristem is converted into the panicle meristem. The panicle meristem subsequently differentiates in an orderly fashion into primary branches, secondary branches, and spikelet meristems (Ikeda et al., 2004). Rice grain yield is determined by four parameters: number of panicles per plant, number of spikelets per panicle, filling rate, and total seed weight. The number of panicles and spikelets is determined soon after for...

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Jasmonic Acid Differentially Affects Growth, Ion Uptake and Abscisic Acid Concentration in Salt‐tolerant and Salt‐sensitive Rice Cultivars

Cited by 220 publications

References 75 publications

A vacuole localized β-glucosidase contributes to drought tolerance in Arabidopsis

A vacuole localized β-glucosidase contributes to drought tolerance in Arabidopsis

Alterations of Endogenous Hormonal Levels in Plants under Drought and Salinity

Methyl Jasmonate Reduces Grain Yield by Mediating Stress Signals to Alter Spikelet Development in Rice

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