Lipoxygenase-derived 9-hydro(pero)xides of linoleoylethanolamide interact with ABA signaling to arrest root development during Arabidopsis seedling establishment

2015 ◽  
Vol 82 (2) ◽  
pp. 315-327 ◽  
Author(s):  
Jantana Keereetaweep ◽  
Elison B. Blancaflor ◽  
Ellen Hornung ◽  
Ivo Feussner ◽  
Kent D. Chapman
Keyword(s):  
Root Development ◽  
Seedling Establishment ◽  
Aba Signaling ◽  
Arabidopsis Seedling

scholarly journals The fungal sesquiterpenoid pyrenophoric acid B uses the plant ABA biosynthetic pathway to inhibit seed germination

2019 ◽  
Vol 70 (19) ◽  
pp. 5487-5494 ◽  
Author(s):  
Jorge Lozano-Juste ◽  
Marco Masi ◽  
Alessio Cimmino ◽  
Suzette Clement ◽  
Maria A Fernández ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Establishment ◽  
Biosynthetic Pathway ◽  
Aba Signaling ◽  
Wild Type ◽  
Invasive Weed ◽  
Seed Mortality ◽  
Signaling Components ◽  
Aba Biosynthesis ◽  
Aba Receptors

Abstract Pyrenophoric acid (P-Acid), P-Acid B, and P-Acid C are three phytotoxic sesquiterpenoids produced by the ascomycete seed pathogen Pyrenophora semeniperda, a fungus proposed as a mycoherbicide for biocontrol of cheatgrass, an extremely invasive weed. When tested in cheatgrass bioassays, these metabolites were able to delay seed germination, with P-Acid B being the most active compound. Here, we have investigated the cross-kingdom activity of P-Acid B and its mode of action, and found that it activates the abscisic acid (ABA) signaling pathway in order to inhibit seedling establishment. P-Acid B inhibits seedling establishment in wild-type Arabidopsis thaliana, while several mutants affected in the early perception as well as in downstream ABA signaling components were insensitive to the fungal compound. However, in spite of structural similarities between ABA and P-Acid B, the latter is not able to activate the PYR/PYL family of ABA receptors. Instead, we have found that P-Acid B uses the ABA biosynthesis pathway at the level of alcohol dehydrogenase ABA2 to reduce seedling establishment. We propose that the fungus P. semeniperda manipulates plant ABA biosynthesis as a strategy to reduce seed germination, increasing its ability to cause seed mortality and thereby increase its fitness through higher reproductive success.

scholarly journals Biosynthesis of DHGA12 and its roles in Arabidopsis seedling establishment

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Hao Liu ◽  
Siyi Guo ◽  
Minghua Lu ◽  
Yu Zhang ◽  
Junhua Li ◽  
...  
Keyword(s):  
Seedling Establishment ◽  
Arabidopsis Seedling

Arabidopsis seedling establishment under waterlogging requires ABCG5‐mediated formation of a dense cuticle layer

2020 ◽  
Vol 229 (1) ◽  
pp. 156-172 ◽  
Author(s):  
Eun‐Jung Lee ◽  
Kyung Yoon Kim ◽  
Jie Zhang ◽  
Yasuyo Yamaoka ◽  
Peng Gao ◽  
...  
Keyword(s):  
Seedling Establishment ◽  
Arabidopsis Seedling

scholarly journals The fungal sesquiterpenoid pyrenophoric acid B uses the plant ABA biosynthetic pathway to inhibit seed germination

2019 ◽  
Author(s):  
Jorge Lozano-Juste ◽  
Marco Masi ◽  
Alessio Cimmino ◽  
Suzette Clement ◽  
Maria A. Fernández ◽  
...  
Keyword(s):  
Seed Germination ◽  
Reproductive Success ◽  
Seedling Establishment ◽  
Biosynthetic Pathway ◽  
Aba Signaling ◽  
Invasive Weed ◽  
Seed Mortality ◽  
Signaling Components ◽  
Aba Biosynthesis ◽  
Aba Receptors

HighlightThe fungus Pyrenophora semeniperda produces pyrenophoric acid B, a small molecule that exploits the plant ABA biosynthetic pathway to reduce seed germination, increasing its reproductive success.AbstractPyrenophoric acid (P-Acid), P-Acid B and P-Acid C are three phytotoxic sesquiterpenoids produced by the ascomycete seed pathogen Pyrenophora semeniperda, a fungus proposed as a mycoherbicide for biocontrol of cheatgrass, an extremely invasive weed. When tested in cheatgrass bioassays these metabolites were able to delay seed germination, with P-Acid B being the most active compound. Here, we have investigated the cross-kingdom activity of P-Acid B and its mode of action and found that it activates the ABA signaling pathway in order to inhibit seedling establishment. P-Acid B inhibits seedling establishment in wild-type Arabidopsis thaliana while several mutants affected in the early perception as well as in downstream ABA signaling components were insensitive to the fungal compound. However, in spite of structural similarities between ABA and P-Acid B, the latter is not able to activate the PYR/PYL family of ABA receptors. Instead, we have found that P-Acid B uses the ABA biosynthesis pathway at the level of alcohol dehydrogenase ABA2 to reduce seedling establishment. We propose that the fungus Pyrenophora semeniperda manipulates plant ABA biosynthesis as a strategy to reduce seed germination, increasing its ability to cause seed mortality and thereby increase its fitness through higher reproductive success.

scholarly journals Genetic interactions between ABA signalling and the Arg/N-end rule pathway during Arabidopsis seedling establishment

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Hongtao Zhang ◽  
Lucy Gannon ◽  
Peter D. Jones ◽  
Chelsea A. Rundle ◽  
Kirsty L. Hassall ◽  
...  
Keyword(s):  
Seedling Establishment ◽  
Genetic Interactions ◽  
Arabidopsis Seedling

Hydrogen peroxide facilitates Arabidopsis seedling establishment by interacting with light signalling pathway in the dark

2019 ◽  
Vol 42 (4) ◽  
pp. 1302-1317 ◽  
Author(s):  
Han Cheng ◽  
Qun Liang ◽  
Xiang Chen ◽  
Yuanyuan Zhang ◽  
Fei Qiao ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Seedling Establishment ◽  
Signalling Pathway ◽  
Arabidopsis Seedling ◽  
Light Signalling

scholarly journals Counteraction of ABA-Mediated Inhibition of Seed Germination and Seedling Establishment by ABA Signaling Terminator in Arabidopsis

2020 ◽  
Vol 13 (9) ◽  
pp. 1284-1297 ◽  
Author(s):  
Zhijuan Wang ◽  
Ziyin Ren ◽  
Chunhong Cheng ◽  
Tao Wang ◽  
Hongtao Ji ◽  
...  
Keyword(s):  
Seed Germination ◽  
Seedling Establishment ◽  
Aba Signaling

ROS and ABA Signaling Are Involved in the Growth Stimulation Induced by Low-Dose Gamma Irradiation in Arabidopsis Seedling

2014 ◽  
Vol 175 (3) ◽  
pp. 1490-1506 ◽  
Author(s):  
Wencai Qi ◽  
Liang Zhang ◽  
Weisen Feng ◽  
Hangbo Xu ◽  
Lin Wang ◽  
...  
Keyword(s):  
Gamma Irradiation ◽  
Low Dose ◽  
Growth Stimulation ◽  
Aba Signaling ◽  
Arabidopsis Seedling
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