Phospholipase Dδ and H2S increase the production of NADPH oxidase-dependent H2O2 to respond to osmotic stress-induced stomatal closure in Arabidopsis thaliana

2022 ◽  
pp. 153617
Author(s):  
Qin Liu ◽  
Ruirui Liu ◽  
Yaping Zhou ◽  
Wei Wang ◽  
Guofan Wu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Osmotic Stress ◽  
Nadph Oxidase ◽  
Stomatal Closure

scholarly journals Single-stranded oligodeoxynucleotides induce plant defence in Arabidopsis thaliana

2020 ◽  
Vol 126 (3) ◽  
pp. 413-422
Author(s):  
Laila Toum ◽  
Gabriela Conti ◽  
Francesca Coppola Guerriero ◽  
Valeria P Conforte ◽  
Franco A Garolla ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Nadph Oxidase ◽  
Pseudomonas Syringae ◽  
Plant Immunity ◽  
Stomatal Closure ◽  
Plant Defence ◽  
Oxidase Inhibitor ◽  
Bacterial Toxin ◽  
Dependent Manner ◽  
Concentration Dependent Manner

Abstract Background and Aims Single-stranded DNA oligodeoxynucleotides (ssODNs) have been shown to elicit immune responses in mammals. In plants, RNA and genomic DNA can activate immunity, although the exact mechanism through which they are sensed is not clear. The aim of this work was to study the possible effect of ssODNs on plant immunity. Key Results The ssODNs IMT504 and 2006 increased protection against the pathogens Pseudomonas syringae pv. tomato DC3000 and Botrytis cinerea but not against tobacco mosaic virus-Cg when infiltrated in Arabidopsis thaliana. In addition, ssODNs inhibited root growth and promoted stomatal closure in a concentration-dependent manner, with half-maximal effective concentrations between 0.79 and 2.06 µm. Promotion of stomatal closure by ssODNs was reduced by DNase I treatment. It was also diminished by the NADPH oxidase inhibitor diphenyleneiodonium and by coronatine, a bacterial toxin that inhibits NADPH oxidase-dependent reactive oxygen species (ROS) synthesis in guard cells. In addition it was found that ssODN-mediated stomatal closure was impaired in bak1-5, bak1-5/bkk1, mpk3 and npr1-3 mutants. ssODNs also induced early expression of MPK3, WRKY33, PROPEP1 and FRK1 genes involved in plant defence, an effect that was reduced in bak1-5 and bak1-5/bkk1 mutants. Conclusions ssODNs are capable of inducing protection against pathogens through the activation of defence genes and promotion of stomatal closure through a mechanism similar to that of other elicitors of plant immunity, which involves the BAK1 co-receptor, and ROS synthesis.

Osmotic stress-triggered stomatal closure requires Phospholipase Dδ and hydrogen sulfide in Arabidopsis thaliana

2021 ◽  
Vol 534 ◽  
pp. 914-920
Author(s):  
Qin Liu ◽  
Yaping Zhou ◽  
Hui Li ◽  
Ruirui Liu ◽  
Wei Wang ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Hydrogen Sulfide ◽  
Osmotic Stress ◽  
Stomatal Closure

AtMYB109 negatively regulates stomatal closure under osmotic stress in Arabidopsis thaliana

2020 ◽  
Vol 255 ◽  
pp. 153292
Author(s):  
Won Mi So ◽  
A.K.M Mahmudul Huque ◽  
Hyun-young Shin ◽  
Soo Youn Kim ◽  
Jin Seok Shin ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Osmotic Stress ◽  
Stomatal Closure

NADPH oxidase in plasma membrane is involved in stomatal closure induced by dehydroascorbate

2012 ◽  
Vol 51 ◽  
pp. 26-30 ◽  
Author(s):  
Yong Chun Shi ◽  
Yun Peng Fu ◽  
Wei Qun Liu
Keyword(s):  
Plasma Membrane ◽  
Nadph Oxidase ◽  
Stomatal Closure

Physiological and morphological responses to water stress in Aegilops biuncialis and Triticum aestivum genotypes with differing tolerance to drought

2004 ◽  
Vol 31 (12) ◽  
pp. 1149 ◽  
Author(s):  
István Molnár ◽  
László Gáspár ◽  
Éva Sárvári ◽  
Sándor Dulai ◽  
Borbála Hoffmann ◽  
...  
Keyword(s):  
Growth Rate ◽  
Triticum Aestivum ◽  
Water Stress ◽  
Drought Tolerance ◽  
Osmotic Stress ◽  
Biomass Production ◽  
Water Loss ◽  
Stomatal Closure ◽  
Co2 Assimilation ◽  
Wheat Genotypes

The physiological and morphological responses to water stress induced by polyethylene glycol (PEG) or by withholding water were investigated in Aegilops biuncialis Vis. genotypes differing in the annual rainfall of their habitat (1050, 550 and 225 mm year–1) and in Triticum aestivum L. wheat genotypes differing in drought tolerance. A decrease in the osmotic pressure of the nutrient solution from –0.027 to –1.8 MPa resulted in significant water loss, a low degree of stomatal closure and a decrease in the intercellular CO2 concentration (Ci) in Aegilops genotypes originating from dry habitats, while in wheat genotypes high osmotic stress increased stomatal closure, resulting in a low level of water loss and high Ci. Nevertheless, under saturating light at normal atmospheric CO2 levels, the rate of CO2 assimilation was higher for the Aegilops accessions, under high osmotic stress, than for the wheat genotypes. Moreover, in the wheat genotypes CO2 assimilation exhibited less or no O2 sensitivity. These physiological responses were manifested in changes in the growth rate and biomass production, since Aegilops (Ae550, Ae225) genotypes retained a higher growth rate (especially in the roots), biomass production and yield formation after drought stress than wheat. These results indicate that Aegilops genotypes, originating from a dry habitat have better drought tolerance than wheat, making them good candidates for improving the drought tolerance of wheat through intergeneric crossing.

Alleviation of osmotic stress by H2S is related to regulated PLDα1 and suppressed ROS in Arabidopsis thaliana

2020 ◽  
Vol 133 (3) ◽  
pp. 393-407 ◽  
Author(s):  
Min Zhao ◽  
Qin Liu ◽  
Yue Zhang ◽  
Ning Yang ◽  
Guofan Wu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Osmotic Stress

Dehydrin ERD14 activates glutathione transferase Phi9 in Arabidopsis thaliana under osmotic stress

2020 ◽  
Vol 1864 (3) ◽  
pp. 129506 ◽  
Author(s):  
Phuong N. Nguyen ◽  
Maria-Armineh Tossounian ◽  
Denes S. Kovacs ◽  
Tran T. Thu ◽  
Benoit Stijlemans ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Osmotic Stress ◽  
Glutathione Transferase
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