Abscisic Acid is Involved in the Water Stress-Induced Betaine Accumulation in Pear Leaves

Gao, Xun; Pan, Qiu-Hong; Li, Meijun; Zhang, Lingyun; Wang, Xiaofang; Shen, Yuan‐Yue; Lu, Yanfen; Chen, Shangwu; Liang, Zheng; Zhang, Dapeng

doi:10.1093/pcp/pch089

Cited by 31 publications

(15 citation statements)

References 52 publications

(63 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many reports demonstrating positive effects of exogenous ABA and the ABA synthesis inhibitor Flu on water relations, plant growth and final crop yield under water deficit conditions [13,16,] (Table 1). The ABA treatments increased GB accumulation and the BADH amount, activity as well as its expression, e.g., in barley under osmotic stress [31], in pear ( Pyrus pyrifolia ) under drought stress [32] and sorghum ( Sorghum bicolor ) under salinity treatment [33]. However, some previous reports showed that ABA may not be associated with osmotic stress-induced betaine accumulation in oat ( Avena sterilis ) and periwinkle ( Vinca major ) [34,35].…”

Section: Resultsmentioning

confidence: 99%

Modulation Role of Abscisic Acid (ABA) on Growth, Water Relations and Glycinebetaine Metabolism in Two Maize (Zea mays L.) Cultivars under Drought Stress

Zhang

Gao

Jing-jiang

et al. 2012

IJMS

View full text Add to dashboard Cite

Abstract:The role of plant hormone abscisic acid (ABA) in plants under drought stress (DS) is crucial in modulating physiological responses that eventually lead to adaptation to an unfavorable environment; however, the role of this hormone in modulation of glycinebetaine (GB) metabolism in maize particularly at the seedling stage is still poorly understood. Some hydroponic experiments were conducted to investigate the modulation role of ABA on plant growth, water relations and GB metabolism in the leaves of two maize cultivars, Zhengdan 958 (ZD958; drought tolerant), and Jundan 20 (JD20; drought sensitive), subjected to integrated root-zone drought stress (IR-DS) simulated by the addition of polyethylene glycol (PEG, 12% w/v, MW 6000). The IR-DS substantially resulted in increased betaine aldehyde dehydrogenase (BADH) activity and choline content which act as the key enzyme and initial substrate, respectively, in GB biosynthesis. Drought stress also induced accumulation of GB, whereas it caused reduction in leaf relative water content (RWC) and dry matter (DM) in both cultivars. The contents of ABA and GB increased in drought-stressed maize seedlings, but ABA accumulated prior to GB accumulation under the drought treatment. These responses were more predominant in ZD958 than those in JD20. Addition of exogenous ABA and fluridone (Flu) (ABA OPEN ACCESSInt. J. Mol. Sci. 2012, 13 3190 synthesis inhibitor) applied separately increased and decreased BADH activity, respectively. Abscisic acid application enhanced GB accumulation, leaf RWC and shoot DM production in both cultivars. However, of both maize cultivars, the drought sensitive maize cultivar (JD20) performed relatively better than the other maize cultivar ZD958 under both ABA and Flu application in view of all parameters appraised. It is, therefore, concluded that increase in both BADH activity and choline content possibly resulted in enhancement of GB accumulation under DS. The endogenous ABA was probably involved in the regulation of GB metabolism by regulating BADH activity, and resulting in modulation of water relations and plant growth under drought, especially in the drought sensitive maize cultivar JD20.

show abstract

Section: Resultsmentioning

confidence: 99%

Modulation Role of Abscisic Acid (ABA) on Growth, Water Relations and Glycinebetaine Metabolism in Two Maize (Zea mays L.) Cultivars under Drought Stress

Zhang

Gao

Jing-jiang

et al. 2012

IJMS

View full text Add to dashboard Cite

show abstract

“…In this account, Larher et al (2009) indicated that pear trees could not be ranked among plant species that behave as GB accumulators. On the contrary, Gao et al (2004) referred to high GB levels in the leaves of non-stressed plants of Pyrus bretschneideri.…”

Section: Effect Of Salt and Drought Stress On Metabolite Profiles Of mentioning

confidence: 99%

Regulation of metabolomics in Atriplex halimus growth under salt and drought stress

et al. 2012

View full text Add to dashboard Cite

Forty-day-old Atriplex halimus seedlings were treated with either NaCl (50, 300 and 550 mM) for the subsequent 30 days or PEG for the following 3, 6 and 10 days. Shoot fresh and dry weights were significantly increased by 50 mM NaCl; nevertheless, the other concentrations had no effect. However, the growth was reduced by drought only after 10 days. Meanwhile, Na ? was accumulated in treated plants; the magnitude of accumulation was highest with high NaCl concentration or PEG for 10 days. The metabolite profiles showed discrimination particularly up-regulation of the amino acids proline, valine, isoleucine, and methionine. Moreover, the macro analysis revealed that NaCl-and PEG-treated plants shared 10 % of the metabolites in the positive mode, however, 87 % were unique to NaCl and 46 % were unique to PEG whereas in the negative mode, 8 % were in share while 90 or 53 % were restricted to NaCl or PEG, respectively. Additionally, sucrose in particular was significantly increased up to threefold and fivefold by 300 and 550 mM NaCl, respectively and up to 2.5-fold by drought for 10 days, nevertheless, the other sugar fractions remained largely unchanged. Also, proline was significantly increased by only the high NaCl concentrations and the long-term drought, nonetheless, the other treatments led, if any, to decreases. These results conclude that NaCl affects the metabolite profiles more than PEG and these metabolites might contribute to osmotic adjustments to act as osmoprotectants rather than osmolytes. These changes of metabolomics might function in many resistance and stress responses.

show abstract

“…Additionally, drought stress lead to reduced indole-3-acetic acid (IAA, auxin) content 32 , however, increased auxin levels were noted upon pathogen infection 16 . Looking at other examples cited in Supplementary Table S1, it is possible that positive and negative crosstalk between different stress hormones regulates interaction between drought and pathogen stress signaling 18, 33–37 .…”

Section: Introductionmentioning

confidence: 99%

Global profiling of phytohormone dynamics during combined drought and pathogen stress in Arabidopsis thaliana reveals ABA and JA as major regulators

Gupta

Hisano

Hojo

et al. 2017

Sci Rep

106

View full text Add to dashboard Cite

Global transcriptome studies demonstrated the existence of unique plant responses under combined stress which are otherwise not seen during individual stresses. In order to combat combined stress plants use signaling pathways and ‘cross talk’ mediated by hormones involved in stress and growth related processes. However, interactions among hormones’ pathways in combined stressed plants are not yet known. Here we studied dynamics of different hormones under individual and combined drought and pathogen infection in Arabidopsis thaliana by liquid chromatography-mass spectrometry (LC-MS) based profiling. Our results revealed abscisic acid (ABA) and salicylic acid (SA) as key regulators under individual drought and pathogen stress respectively. Under combined drought and host pathogen stress (DH) we observed non-induced levels of ABA with an upsurge in SA and jasmonic acid (JA) concentrations, underscoring their role in basal tolerance against host pathogen. Under a non-host pathogen interaction with drought (DNH) stressed plants, ABA, SA and JA profiles were similar to those under DH or non-host pathogen alone. We propose that plants use SA/JA dependent signaling during DH stress which antagonize ABA biosynthesis and signaling pathways during early stage of stress. The study provides insights into hormone modulation at different time points during combined stress.

show abstract

Abscisic Acid is Involved in the Water Stress-Induced Betaine Accumulation in Pear Leaves

Cited by 31 publications

References 52 publications

Modulation Role of Abscisic Acid (ABA) on Growth, Water Relations and Glycinebetaine Metabolism in Two Maize (Zea mays L.) Cultivars under Drought Stress

Modulation Role of Abscisic Acid (ABA) on Growth, Water Relations and Glycinebetaine Metabolism in Two Maize (Zea mays L.) Cultivars under Drought Stress

Regulation of metabolomics in Atriplex halimus growth under salt and drought stress

Global profiling of phytohormone dynamics during combined drought and pathogen stress in Arabidopsis thaliana reveals ABA and JA as major regulators

Contact Info

Product

Resources

About