scholarly journals Phaeophyceaean (Brown Algal) Extracts Activate Plant Defense Systems in Arabidopsis thaliana Challenged With Phytophthora cinnamomi

2020 ◽  
Vol 11 ◽  
Author(s):  
Md Tohidul Islam ◽  
Han Ming Gan ◽  
Mark Ziemann ◽  
Hashmath Inayath Hussain ◽  
Tony Arioli ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Defense ◽  
Phytophthora Cinnamomi ◽  
Defense Systems ◽  
Algal Extracts

scholarly journals Arabidopsis Transcriptome Analysis Reveals Key Roles of Melatonin in Plant Defense Systems

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e93462 ◽  
Author(s):  
Sarah Weeda ◽  
Na Zhang ◽  
Xiaolei Zhao ◽  
Grace Ndip ◽  
Yangdong Guo ◽  
...  
Keyword(s):  
Plant Defense ◽  
Transcriptome Analysis ◽  
Defense Systems

scholarly journals Plant Defense Stimulator Mediated Defense Activation Is Affected by Nitrate Fertilization and Developmental Stage in Arabidopsis thaliana

2020 ◽  
Vol 11 ◽  
Author(s):  
Camille Verly ◽  
Atsin Claude Roméo Djoman ◽  
Martine Rigault ◽  
Frédéric Giraud ◽  
Loïc Rajjou ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Defense ◽  
Developmental Stage ◽  
Nitrate Fertilization

scholarly journals ALLENE OXIDE SYNTHASE and HYDROPEROXIDE LYASE, Two Non-Canonical Cytochrome P450s in Arabidopsis thaliana and Their Different Roles in Plant Defense

2019 ◽  
Vol 20 (12) ◽  
pp. 3064 ◽  
Author(s):  
Sachin Rustgi ◽  
Armin Springer ◽  
ChulHee Kang ◽  
Diter von Wettstein ◽  
Christiane Reinbothe ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Defense ◽  
Metabolic Regulation ◽  
Insect Pests ◽  
Green Leaf Volatiles ◽  
Hydroperoxide Lyase ◽  
Allene Oxide ◽  
Allene Oxide Synthase ◽  
Cytochrome P450 Enzymes ◽  
Oxide Synthase

The channeling of metabolites is an essential step of metabolic regulation in all living organisms. Multifunctional enzymes with defined domains for metabolite compartmentalization are rare, but in many cases, larger assemblies forming multimeric protein complexes operate in defined metabolic shunts. In Arabidopsis thaliana, a multimeric complex was discovered that contains a 13-lipoxygenase and allene oxide synthase (AOS) as well as allene oxide cyclase. All three plant enzymes are localized in chloroplasts, contributing to the biosynthesis of jasmonic acid (JA). JA and its derivatives act as ubiquitous plant defense regulators in responses to both biotic and abiotic stresses. AOS belongs to the superfamily of cytochrome P450 enzymes and is named CYP74A. Another CYP450 in chloroplasts, hydroperoxide lyase (HPL, CYP74B), competes with AOS for the common substrate. The products of the HPL reaction are green leaf volatiles that are involved in the deterrence of insect pests. Both enzymes represent non-canonical CYP450 family members, as they do not depend on O2 and NADPH-dependent CYP450 reductase activities. AOS and HPL activities are crucial for plants to respond to different biotic foes. In this mini-review, we aim to summarize how plants make use of the LOX2–AOS–AOC2 complex in chloroplasts to boost JA biosynthesis over volatile production and how this situation may change in plant communities during mass ingestion by insect pests.

Microbial recognition and activation of plant defense systems

1993 ◽  
Vol 1 (5) ◽  
pp. 181-187 ◽  
Author(s):  
William P. Lindsay ◽  
Christopher J. Lamb ◽  
Richard A. Dixon
Keyword(s):  
Plant Defense ◽  
Defense Systems

scholarly journals Overexpression of DWARF AND LESION FORMATION 1 (DLE1) causes altered activation of plant defense system in Arabidopsis thaliana

2013 ◽  
Vol 30 (4) ◽  
pp. 385-392 ◽  
Author(s):  
Youichi Kondou ◽  
Kosuke Noguchi ◽  
Shinsuke Kutsuna ◽  
Mika Kawashima ◽  
Arata Yoneda ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Defense ◽  
Defense System ◽  
Lesion Formation

Jasmonate action in plant defense against insects

2019 ◽  
Vol 70 (13) ◽  
pp. 3391-3400 ◽  
Author(s):  
Jiaojiao Wang ◽  
Dewei Wu ◽  
Youping Wang ◽  
Daoxin Xie
Keyword(s):  
Transcription Factors ◽  
Plant Defense ◽  
Molecular Basis ◽  
Recent Progress ◽  
Herbivorous Insects ◽  
Role Perception ◽  
Rapid Synthesis ◽  
Defense Systems ◽  
F Box Protein ◽  
Insect Attack

Abstract Herbivorous insects represent one of the major threats to sessile plants. To cope with herbivore challenges, plants have evolved sophisticated defense systems, in which the lipid-derived phytohormone jasmonate plays a crucial role. Perception of insect attack locally and systemically elicits rapid synthesis of jasmonate, which is perceived by the F-box protein COI1 to further recruit JAZ repressors for ubiquitination and degradation, thereby releasing transcription factors that subsequently activate plant defense against insect attack. Here, we review recent progress in understanding the molecular basis of jasmonate action in plant defense against insects.

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